R8C R5F21276KFP Microcontroller Reverse Engineering will reverse mcu programming sequence and extract protected mcu r5f21276kfp source code from its memory, and then clone firmware to new microcontroller R5F21276JFP;
4 circuits: XIN clock oscillation circuit,
XCIN clock oscillation circuit (32 kHz),
High-speed on-chip oscillator (with frequency adjustment function), Low-speed on-chip oscillator
- Oscillation stop detection: XIN clock oscillation stop detection function
- Frequency divider circuit: Dividing selectable 1, 2, 4, 8, and 16
- Low power consumption modes:
Standard operating mode (high-speed clock, low-speed clock, high-speed on-chip oscillator to break R5F21292SD locked mcu flash memory, low-speed on-chip oscillator), wait mode, stop mode.
8 bits × 1 (with 8-bit prescaler)
Timer mode (period timer), pulse output mode (output level inverted every period), event counter mode, pulse width measurement mode, pulse period measurement mode.
R0 is a 16-bit register for transfer, arithmetic, and logic operations. The same applies to R1 to R3. R0 can be split into high-order bits (R0H) and low-order bits (R0L) to be used separately as 8-bit data registers to attack renesas r5f21244sd microcontroller protection. R1H and R1L are analogous to R0H and R0L. R2 can be combined with R0 and used as a 32-bit data register (R2R0). R3R1 is analogous to R2R0.