Reverse Engineering IC PIC18F248 and locate the fuse bit position, crack mcu pic18f248 flash memory by focus ion beam and copy the embedded firmware from microcontroller pic18f248;
High-Performance RISC CPU:
· Linear program memory addressing up to 2 Mbytes
· Linear data memory addressing to 4 Kbytes
· Up to 10 MIPS operation
· DC – 40 MHz clock input
· 4 MHz-10 MHz oscillator/clock input with PLL active when copy microcontroller pic16f737 flash memory
· 16-bit wide instructions, 8-bit wide data path
· Priority levels for interrupts
· 8 x 8 Single-Cycle Hardware Multiplier
Peripheral Features:
· High current sink/source 25 mA/25 mA
· Three external interrupt pins
· Timer0 module: 8-bit/16-bit timer/counter with 8-bit programmable prescaler
· Timer1 module: 16-bit timer/counter
· Timer2 module: 8-bit timer/counter with 8-bit period register (time base for PWM)
· Timer3 module: 16-bit timer/counter
· Secondary oscillator clock option – Timer1/Timer3
· Capture/Compare/PWM (CCP) modules; CCP pins can be configured as:
– Capture input: 16-bit, max resolution 6.25 ns
– Compare: 16-bit, max resolution 100 ns (TCY) before break mcu pic18f442 software
– PWM output: PWM resolution is 1 to 10-bit Max. PWM freq. @:8-bit resolution = 156 kHz 10-bit resolution = 39 kHz
· Enhanced CCP module which has all the features of the standard CCP module, but also has the following features for advanced motor control:
– 1, 2 or 4 PWM outputs
– Selectable PWM polarity
– Programmable PWM dead time
· Master Synchronous Serial Port (MSSP) with two modes of operation:
– 3-wire SPI™ (Supports all 4 SPI modes) after Reverse engineering IC
– I2C™ Master and Slave mode
· Addressable USART module:
– Supports interrupt-on-address bit
Advanced Analog Features:
· 10-bit, up to 8-channel Analog-to-Digital Converter module (A/D) with:
– Conversion available during Sleep
– Up to 8 channels available
· Analog Comparator module:
– Programmable input and output multiplexing
· Comparator Voltage Reference module
· Programmable Low-Voltage Detection (LVD) module:
– Supports interrupt-on-Low-Voltage Detection
· Programmable Brown-out Reset (BOR)
CAN bus Module Features:
· Complies with ISO CAN Conformance Test
· Message bit rates up to 1 Mbps
· Conforms to CAN 2.0B Active Spec with:
– 29-bit Identifier Fields
– 8-byte message length
– 3 Transmit Message Buffers with prioritization
– 2 Receive Message Buffers
– 6 full, 29-bit Acceptance Filters
– Prioritization of Acceptance Filters
– Multiple Receive Buffers for High Priority Messages to prevent loss due to overflow
– Advanced Error Management Features
Special Microcontroller Features:
· Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
· Watchdog Timer (WDT) with its own on-chip RC oscillator
· Programmable code protection
· Power-saving Sleep mode
· Selectable oscillator options, including:
– 4x Phase Lock Loop (PLL) of primary oscillator
– Secondary Oscillator (32 kHz) clock input
· In-Circuit Serial ProgrammingTM (ICSPTM) via two pins IC Flash Technology:
· Low-power, high-speed Enhanced Flash technology
· Fully static design Wide operating voltage range (2.0V to 5.5V) Industrial and Extended temperature ranges