Archive for the ‘Recover Chip’ Category
Restore Microchip PIC18F2550 Memory Data
The OSTS, IOFS and T1RUN bits indicate which clock source is currently providing the device clock. The OSTS bit indicates that the Oscillator Start-up Timer by Restore Microchip PIC18F2550 Memory Data has timed out and the primary clock is providing the device clock in Primary Clock modes.
The IOFS bit indicates when the internal oscillator block has stabi- lized and is providing the device clock in RC Clock modes by Reverse Engineering Encrypted AVR Chip ATtiny261 Software. The T1RUN bit (T1CON<6>) indicates when the Timer1 oscillator is providing the device clock in Secondary Clock modes. In power-managed modes, only one of these three bits will be set at any time. If none of these bits are set, the INTRC is providing the clock or INTOSC has just started and is not yet stable.
The IDLEN bit determines if the device goes into Sleep mode or one of the Idle modes when the SLEEP instruction is executed through Decode Atmel Chip ATtiny461 Encrypted Firmware. The use of the flag and control bits in the OSCCON register is discussed in more detail in Section 3.0 “Power-Managed Modes”.
Note 1: The Timer1 oscillator must be enabled to select the secondary clock source. The Timer1 oscillator is enabled by setting the T1OSCEN bit in the Timer1 Control register (T1CON<3>) in order to Break Encrypted Microprocessor ATtiny861 Embedded Heximal. If the Timer1 oscillator is not enabled, then any attempt to select a secondary clock source will be ignored.
2: It is recommended that the Timer1 oscillator be operating and stable before selecting the secondary clock source or a very long delay may occur while the Timer1 oscillator starts from Restore Microchip PIC18F2550 Memory Data.
PIC18LF2525 devices contain circuitry to prevent clock “glitches” when switching between clock sources. A short pause in the device clock occurs during the clock switch to Crack MCU Program. The length of this pause is the sum of two cycles of the old clock source and three to four cycles of the new clock source for the purpose of Break Atmel MCU ATmega1281 Locked Heximal. This formula assumes that the new clock source is stable. Clock transitions are discussed in greater detail in Section 3.1.2 “Entering Power-Managed Modes”.
Microprocessor PIC18F2515 Heximal File Recovery
Microprocessor PIC18F2515 heximal file recovery is a process starts from unlock protective PIC18F2515 microchip MCU fuse bit and read embedded firmware out in the format of binary code and heximal data from secured microcontroller PIC18F2515;
Using the internal oscillator as the clock source when Crack MCU Flash eliminates the need for up to two external oscillator pins which will provide great benefit for Microprocessor PIC18F2515 Heximal File Recovery and can then be used for digital I/O. Two distinct configurations are available:
- In INTIO1 mode, the OSC2 pin outputs FOSC/4, while OSC1 functions as RA7 for digital input and output.
- In INTIO2 mode, OSC1 functions as RA7 and OSC2 functions as RA6, both for digital input and output.
The internal oscillator block is calibrated at the factory to produce an INTOSC output frequency of 8.0 MHz through the process of Restore Microprocessor Program Most Important Two Steps. The INTRC oscillator operates independently of the INTOSC source. Any changes in INTOSC across voltage and temperature are not necessarily reflected by changes in INTRC and vice versa.
The internal oscillator’s output has been calibrated at the factory but can be adjusted in the user’s application. This is done by writing to the OSCTUNE register (Register 2-1).
When the OSCTUNE register is modified, the INTOSC frequency will begin shifting to the new frequency. The INTOSC clock will stabilize within 1 ms by Break Atmel AVR MCU ATmega8535L Heximal. Code execution continues during this shift. There is no indication that the shift has occurred.
The OSCTUNE register also implements the INTSRC and PLLEN bits, which control certain features of the internal oscillator block. The INTSRC bit allows users to select which internal oscillator provides the clock source when the 31 kHz frequency option is selected for the purpose of Microprocessor PIC18F2515 Heximal File Recovery. This is covered in greater detail in Section 2.7.1 “Oscillator Control Register”.
The PLLEN bit controls the operation of the frequency multiplier, PLL, in Internal Oscillator modes after Recover Atmel AVR Controller ATmega48V Firmware.
The 4x frequency multiplier can be used with the internal oscillator block to produce faster device clock speeds than are normally possible with an internal oscillator. When enabled, the PLL produces a clock speed of up to 32 MHz. Unlike HSPLL mode, the PLL is controlled through software. The control bit, PLLEN (OSCTUNE<6>), is used to enable or disable its operation by Break IC ATmega88V Internal Flash.
The PLL is available for use with the INTOSC when:
- The primary clock is the INTOSC clock source (selected in CONFIG1H<3:0>), and
- The 4 or 8 MHz INTOSC output is selected.
Writes to the PLLEN bit will be ignored until both these conditions are met.
Losted PIC18F2458 Microcontroller Embedded Code Restoration
Losted PIC18F2458 microcontroller embedded code restoration is a process to recover binary file or heximal data from PIC18F2458 protective MICROCHIP MCU flash memory and eeprom memory, through PIC18F2458 microprocessor fuse bit unlocking technique;
Without the back-up embedded firmware from microcontrollers sometimes could become the disaster for a company which try to rescue the obselete or not-produce-anymore devices, through our techniques, Losted PIC18F2458 Microcontroller Embedded Code Restoration process will help you get the firmware back from original PIC18F2458:
The HSPLL mode makes use of the HS mode oscillator for frequencies up to 10 MHz. A PLL then multiplies the oscillator output frequency by 4 to produce an internal clock frequency up to 40 MHz. The PLLEN bit is not available in this oscillator mode before Microchip PIC18F2520 Embedded Firmware Extraction.
The PLL is only available to the crystal oscillator when the FOSC3:FOSC0 Configuration bits are programmed for HSPLL mode (= 0110).
The PLL is also available to the internal oscillator block when the INTOSC is configured as the primary clock source from Microchip MCU PIC16F870 Heximal Code Restoration. In this configuration, the PLL is enabled in soft- ware and generates a clock output of up to 32 MHz.
The PIC18LF2458 devices include an internal oscillator block which generates two different clock signals; either can be used as the micro- controller’s clock source. This may eliminate the need for external oscillator circuits on the OSC1 and/or OSC2 pins in order to Recover Freescale MCU MC9S12XDG128 Memory Program.
The main output (INTOSC) is an 8 MHz clock source, which can be used to directly drive the device clock. It also drives a postscaler, which can provide a range of clock frequencies from 31 kHz to 4 MHz. The INTOSC output is enabled when a clock frequency from 125 kHz to 8 MHz is selected, and can provide 31 kHz if required.
The other clock source is the internal RC oscillator (INTRC) which provides a nominal 31 kHz output after Reverse Engineering Microchip PIC16F1913 Memory. INTRC is enabled if it is selected as the device clock source; it is also enabled automatically when any of the following are enabled:
• Power-up Timer
• Fail-Safe Clock Monitor
• Watchdog Timer
These features are discussed in greater detail in Section 23.0 “Special Features of the CPU”.
The clock source frequency (INTOSC direct, INTRC direct or INTOSC postscaler) is selected by configuring the IRCF bits of the OSCCON register before Unlock Microcontroller Flash. Additionally, the 31 kHz clock can be provided by either the INTOSC, or INTRC clock sources, depending on the INTSRC bit (OSCTUNE<7>).
Recover Microchip PIC18F2455 Memory Program
Recover Microchip MCU PIC18F2455 memory program starts from crack encrypted microcontroller PIC18F2455 tamper resistance and then readout embedded firmware from locked microprocessor PIC18F2455 in the format of binary data or heximal file;
As one of the most important components to Recover Microchip PIC18F2455 Memory Program, for timing insensitive applications, the “RC” and “RCIO” device options offer additional cost savings. The actual oscillator frequency is a function of several factors:
• supply voltage
• values of the external resistor (REXT) and capacitor (CEXT)
• operating temperature
Given the same device, operating voltage and temperature and component values, there will also be unit-to-unit frequency variations before Recover PIC MCU Microchip PIC16LF506 Firmware. These are due to factors such as:
• normal manufacturing variation
• difference in lead frame capacitance between package types (especially for low CEXT values)
• variations within the tolerance of limits of REXT and CEXT
In the RC Oscillator mode, the oscillator frequency divided by 4 is available on the OSC2 pin when Decrypt Microchip PIC18F2321 MCU Heximal File. This signal may be used for test purposes or to synchronize other logic after Recover PIC MCU Microchip 12F510 Firmware. Below Figure shows how the R/C combination is connected.
The RCIO Oscillator mode (below Figure) functions like the RC mode, except that the OSC2 pin becomes an additional general purpose I/O pin. The I/O pin becomes bit 6 of PORTA (RA6).
A Phase Locked Loop (PLL) circuit is provided as an option for users who wish to use a lower frequency oscillator circuit, or to clock the device up to its highest rated frequency from a crystal oscillator after Copy Encrypted Microchip PIC18F2330 Heximal. This may be useful for customers who are concerned with EMI due to high-frequency crystals, or users who require higher clock speeds from an internal oscillator if the Microcontroller unlocking is completed.
Recover PIC18F2431 MCU Locked Program
Recover PIC18F2431 MCU locked program needs to unlock encrypted microcontroller PIC18F2431 tamper resistance system, and extract embedded firmware also known as source code from secured microprocessor PIC18F2431 flash binary file memory or eeprom heximal data memory;
Besides its availability as a clock source when Microchip PIC18F2520 Embedded Firmware Extraction, the internal oscillator block provides a stable reference source that gives the family additional features for robust operation and hacker can technically Recover PIC18F2431 MCU Locked Program through power glitch on it:
- Fail-Safe Clock Monitor: This option constantly monitors the main clock source against a reference signal provided by the internal oscillator. If a clock failure occurs, the controller is switched to the internal oscillator block after Microchip MCU PIC16F870 Heximal Code Restoration, allowing for continued operation or a safe application shutdown.
Two-Speed Start-up: This option allows the internal oscillator to serve as the clock source from Power-on Reset, or wake-up from Sleep mode, until the primary clock source is available.
- 12-Bit A/D Converter: This module incorporates programmable acquisition time, allowing for a channel to be selected and a conversion to be initiated without waiting for a sampling period and thus, reducing code overhead.
- Memory Endurance: The Enhanced Flash cells for both program memory and data EEPROM are rated to last for many thousands of erase/write cycles – up to 100,000 for program memory and 1,000,000 for EEPROM by Recover Freescale MCU MC9S12XDG128 Memory Program. Data retention without refresh is conservatively estimated to be greater than 40 years.
- Self-Programmability: These devices can write to their own program memory spaces under inter- nal software control. By using a bootloader routine located in the protected Boot Block at the top of program memory, it becomes possible to create an application that can update itself in the field.
- Extended Instruction Set: Recover PIC18F2431 MCU Locked Program introduces an optional extension to the PIC18 instruction set, which adds eight new instructions and an Indexed Addressing mode. This extension, enabled as a device con- figuration option, has been specifically designed to optimize re-entrant application code originally developed in high-level languages, such as C.
- Enhanced CCP module: In PWM mode, this module provides 1, 2 or 4 modulated outputs for controlling half-bridge and full-bridge drivers. Other features include auto-shutdown, for disabling PWM outputs on interrupt or other select conditions and auto-restart after Reverse Engineering Microchip PIC16F1913 Memory, to reactivate outputs once the condition has cleared.
- Enhanced Addressable USART: This serial communication module is capable of standard.
RS-232 operation and provides support for the LIN bus protocol. Other enhancements include automatic baud rate detection and a 16-bit Baud Rate Generator for improved resolution. When the microcontroller is using the internal oscillator block to Clone IC Code, the EUSART provides stable operation for applications that talk to the outside world without using an external crystal (or its accompanying power requirement).
- Extended Watchdog Timer (WDT): This enhanced version incorporates a 16-bit prescaler, allowing an extended time-out range that is stable across operating voltage and temperature.
Recover Microprocessor ATMEGA640V Firmware
Recovering Microprocessor ATMEGA640V firmware is a highly technical process that often involves reverse engineering techniques to crack and decrypt the protected code stored within the microcontroller. The firmware, which operates at the core of the microprocessor’s functionality, is typically encoded in binary or hexadecimal (hex) format. To recover the ATMEGA640V firmware, engineers may need to decode this complex data and understand its structure, enabling them to copy and restore the original functions of the device.
In many cases, firmware recovery requires cracking the security features of the microcontroller (MCU), which are designed to prevent unauthorized access. This can involve analyzing the microprocessor’s internal architecture, exploiting vulnerabilities, or using specialized equipment to bypass encryption. Once decrypted, the binary or hex representation of the firmware can be decoded and reassembled for restoration or analysis.
We can recover microprocessor ATMEGA640V firmware, please view the microprocessor ATMEGA640V features for your reference:
XTAL1 and XTAL2 are the input and output, respectively, of an inverting amplifier that can be configured for use as an on-chip oscillator by Copy Microcontroller PIC12F675 Firmware. Either a quartz crystal or ceramic resonator may be used.
To drive the device from an external clock source, XTAL2 should be left unconnected while XTAL1 is driven, as shown in Figure 12.
There are no requirements on the duty cycle of the external clock signal, since the input to the internal clocking circuitry is through a divide-by-two flip-flop, but minimum and maximum voltage high and low time specifications must be observed if Recover Microprocessor ATmega640V Firmware.
In idle mode, the CPU puts itself to sleep while all the on-chip peripherals remain active in the process of Copy MCU PIC18F4685 Software. The mode is invoked by software. The content of the on-chip RAM and all the special functions registers remain unchanged during this mode. The idle mode can be terminated by any enabled interrupt or by a hardware reset.
Note that when idle mode is terminated by a hardware reset, the device normally resumes firmware execution from where it left off, up to two machine cycles before the internal reset algorithm takes control. On-chip hardware inhibits access to internal RAM in this event by Unlock Microcontroller Firmware, but access to the port pins is not inhibited.
To eliminate the possibility of an unexpected write to a port pin when idle mode is terminated by a reset for support the progress of Copy IC PIC18F458 Binary, the instruction following the one that invokes idle mode should not write to a port pin or to external memory.
In the power down mode, the oscillator is stopped and the instruction that invokes power down is the last instruction executed. The on-chip RAM and Special Function Registers retain their values until the power down mode is terminated.
Exit from power down can be initiated either by a hardware reset or by an enabled external interrupt. Reset redefines the SFRs but does not change the on-chip RAM. The reset should not be activated before VCC is restored to its normal operating level and must be held active long enough to allow the oscillator to restart and stabilize before Recover Chip MC9S08DZ32ACLC Firmware.
To exit power down via an interrupt, the external interrupt must be enabled as level sensitive before entering power down. The interrupt service routine starts at 16 ms (nominal) after the enabled interrupt pin is activated.
Recover MCU ATMEGA162A Heximal
Recovering MCU ATMEGA162A heximal data is a meticulous process involving advanced techniques to decode and restore the embedded firmware stored within this microcontroller’s flash memory program. This task may arise when source code or program data becomes corrupted, lost, or requires duplication for compatible systems. The ATMEGA162A MCU, known for its reliability in embedded applications, stores critical information in binary format within its EEPROM and flash memory.
To recover the heximal file, reverse engineering tools are often used to break the security layers protecting the firmware. This process involves decoding the binary data and converting it into a heximal file that represents the original source code. By reconstructing the code, engineers can clone or duplicate the program for testing, troubleshooting, or system recovery purposes. However, any attempt to access EEPROM memory data must be done cautiously to avoid corrupting the firmware, as the ATMEGA162A’s security features are designed to prevent unauthorized access.
Successfully recovering MCU ATMEGA162A heximal data allows for precise replication of the original firmware, enabling continued use or adaptation of the program across various hardware setups. This approach is essential for maintaining system reliability and ensuring compatibility in embedded applications.
When the SM2..0 bits are 111 and an external crystal/resonator clock option is selected, the SLEEP instruction makes the MCU Cracking enter Extended Standby mode. This mode is identical to Power-save mode with the exception that the Oscillator is kept running.
From Extended Standby mode, the device wakes up in six clock cycles. The Power Reduction Register, PRR, provides a method to stop the clock to individual peripherals to reduce power consumption. The current state of the peripheral is frozen and the I/O registers can not be read or written in the process of Recover MCU heximal.
Resources used by the peripheral when stopping the clock will remain occupied, hence the peripheral should in most cases be disabled before stopping the clock. Waking up a module, which is done by clearing the bit in PRR, puts the module in the same state as before shutdown.
Module shutdown can be used in Idle mode and Active mode to significantly reduce the overall power consumption. See “Supply Current of IO modules” on page 381 for examples. In all other sleep modes, the clock is already stopped.
Bit 7 – PRTWI: Power Reduction TWI
Writing a logic one to this bit shuts down the TWI by stopping the clock to the module. When waking up the TWI again, the TWI should be re initialized to ensure proper operation when recover MCU heximal.
Bit 6 – PRTIM2: Power Reduction Timer/Counter2
Writing a logic one to this bit shuts down the Timer/Counter2 module in synchronous mode (AS2 is 0). When the Timer/Counter2 is enabled, operation will continue like before the shutdown.
Bit 5 – PRTIM0: Power Reduction Timer/Counter0
Writing a logic one to this bit shuts down the Timer/Counter0 module. When the Timer/Counter0 is enabled, operation will continue like before the shutdown.
Bit 4 – Res: Reserved bit
This bit is reserved bit and will always read as zero.
Bit 3 – PRTIM1: Power Reduction Timer/Counter1
Writing a logic one to this bit shuts down the Timer/Counter1 module. When the Timer/Counter1 is enabled, operation will continue like before the shutdown.
Bit 2 – PRSPI: Power Reduction Serial Peripheral Interface
Writing a logic one to this bit shuts down the Serial Peripheral Interface by stopping the clock to the module. When waking up the SPI again, the SPI should be re initialized to ensure proper operation after Break Chip Atmel Atmega48PV Heximal.
Bit 1 – PRUSART0: Power Reduction USART0
Writing a logic one to this bit shuts down the USART0 by stopping the clock to the module. When waking up the USART0 again, the USART0 should be re initialized to ensure proper operation.
Recover MCU ATTINY25 Flash
The ATtiny25 is a low-power CMOS 8-bit mcu based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny25 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed when Recover MCU ATTINY25 Flash.
The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU) for the purpose of Copy Microcontroller PIC16F737 Flash, allowing two independent registers to be accessed in one single instruction executed in one clock cycle.
The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC mcus.
The ATtiny25 provides the following features: 2/4/8K byte of In-System Programmable Flash, 128/256/512 bytes EEPROM, 128/256/256 bytes SRAM, 6 general purpose I/O lines, 32 general purpose working registers, one 8-bit Timer/Counter with compare modes, one 8-bit high speed Timer/Counter, Universal Serial Interface, Internal and External Interrupts, a 4-channel, 10-bit ADC, a programmable Watchdog Timer with internal Oscillator, and three software selectable power saving modes which will facilitate the process of Break Chip PIC16F785 Heximal.
The Idle mode stops the CPU while allowing the SRAM, Timer/Counter, ADC, Analog Comparator, and Interrupt system to continue functioning. The Power-down mode saves the register contents, disabling all chip functions until the next Interrupt or Hardware Reset.
The ADC Noise Reduction mode stops the CPU and all I/O modules except ADC, to minimize switching noise during ADC conversions. The device is manufactured using Atmel’s high density non-volatile memory MCU Crack technology. The On-chip ISP Flash allows the Program memory to be re-programmed In-System through an SPI serial interface after Attack MCU PIC16F636 Binary, by a conventional non-volatile memory programmer or by an On-chip boot code running on the AVR core.
The ATtiny25 AVR is supported with a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators, and Evaluation kits.
Recover Microcontroller Attiny44 Code
We can Recover MCU ATTINY44 Code, please view the MICROCONTROLLER ATTINY44 features for your reference:
EEPROM read from application code does not work in Lock Bit Mode 3
Reading EEPROM when system clock frequency is below 900 kHz may not work, EEPROM read from application code does not work in Lock Bit Mode 3 When the Memory Lock Bits LB2 and LB1 are programmed to mode 3 in order to Attack IC PIC16C74B Binary, EEPROM read does not work from the application code from MCU Cracking. Problem Fix/Work around Do not set Lock Bit Protection Mode 3 when the application code needs to read from EEPROM.
Reading EEPROM when system clock frequency is below 900 kHz may not work Reading data from the EEPROM at system clock frequency below 900 kHz may result in wrong data read. Problem Fix/Work around Avoid using the EEPROM at clock frequency below 900 kHz before Recover Microcontroller Attiny44 Code. Reading EEPROM when system clock frequency is below 900 kHz may not work
Reading EEPROM when system clock frequency is below 900 kHz may not work Reading data from the EEPROM at system clock frequency below 900 kHz may result in wrong data read.
Problem Fix/Work around Avoid using the EEPROM at clock frequency below 900 kHz.
Port A is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated for the purpose of Copy IC PIC12C671 Eeprom. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Port A has an alternate functions as analog inputs for the ADC, analog comparator, timer/counter, SPI and pin change interrupt as described in ”Alternate Port Functions”. Port B is a 4-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability except PB3 which has the RESET capability to support the process of Copy IC PIC16F884 Code.
To use pin PB3 as an I/O pin, instead of RESET pin, program (‘0’) RSTDISBL fuse. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port B also serves the functions of various special features of the ATtiny24/44/84 as listed on Section 12.3 ”Alternate Port Functions” on page 61.
Recover IC ATMEGA168PA Program
The lowest addresses in the program memory space are by default defined as the Reset and Interrupt Vectors. The complete list of vectors is shown in ”Interrupts” on page 56. The list also determines the priority levels of the different interrupts. The lower the address the higher is the priority level.
RESET has the highest priority, and next is INT0 – the External Interrupt Request; The Interrupt Vectors can be moved to the start of the Boot Flash section by setting the IVSEL bit in the MCU Control Register (MCUCR). Refer to ”Interrupts” on page 56 for more information.
The Reset Vector can also be moved to the start of the Boot Flash section by programming the BOOTRST Fuse, see ”Boot Loader Support – Read-While-Write Self-Programming, ATmega168PA
When an interrupt occurs, the Global Interrupt Enable I-bit is cleared and all interrupts are disabled. The user software can write logic one to the I-bit to enable nested interrupts after breaking off atmega168a secured microcontroller fuse bit. All enabled interrupts can then interrupt the current interrupt routine.
The I-bit is automatically set when a Return from Interrupt instruction – RETI – is executed. There are basically two types of interrupts. The first type is triggered by an event that sets the Interrupt Flag. For these interrupts, the Program Counter is vectored to the actual Interrupt Vector in order to execute the interrupt handling routine, and hardware clears the corresponding Interrupt Flag by Crack MCU Flash.
Interrupt Flags can also be cleared by writing a logic one to the flag bit position(s) to be cleared. If an interrupt condition occurs while the corresponding interrupt enable bit is cleared, the Interrupt Flag will be set and remembered until the interrupt is enabled, or the flag is cleared by software.
Similarly, if one or more interrupt conditions occur while the Global Interrupt Enable bit is cleared, the corresponding Interrupt Flag(s) will be set and remembered until the Global Interrupt Enable bit is set, and will then be executed by order of priority.
The second type of interrupts will trigger as long as the interrupt condition is present. These interrupts do not necessarily have Interrupt Flags. If the interrupt condition disappears before the interrupt is enabled, the interrupt will not be triggered.
When the AVR exits from an interrupt, it will always return to the main program and execute one more instruction before any pending interrupt is served. Note that the Status Register is not automatically stored when entering an interrupt routine, nor restored when returning from an interrupt routine to replicate atmega168p avr mcu flash memory content file. This must be handled by software. When using the CLI instruction to disable interrupts, the interrupts will be immediately disabled. No interrupt will be executed after the CLI instruction, even if it occurs simultaneously with the CLI instruction. The following example shows how this can be used to avoid interrupts during the timed EEPROM write sequence.