Read MCU PIC16C56 Program from flash memory and data from eeprom memory, disable the security fuse bit through MCU cracking will help to reset the status of Microcontroller PIC16C56 from locked to unlocked one;

The PIC12C5XX device contains an 8-bit ALU and working register. The ALU is a general purpose arithmetic unit. It performs arithmetic and Boolean functions between data in the working register and any register file.

The ALU is 8-bits wide and capable of addition, subtraction, shift and logical operations. Unless otherwise mentioned, arithmetic operations are two’s complement in nature if extract MCU pic16c54 code.

In two-operand instructions, typically one operand is the W (working) register. The other operand is either a file register or an immediate constant.

In single operand instructions, the operand is either the W register or a file register. The W register is an 8-bit working register used for ALU operations after extract ic pic12lc509 code.

It is not an addressable register. Depending on the instruction executed, the ALU may affect the values of the Carry (C), Digit Carry (DC), and Zero (Z) bits in the STATUS register.

The C and DC bits operate as a borrow and digit borrow out bit, respectively, in subtraction. See theSUBWF andADDWF instructions for examples if extract ic pic12lc508a code.

A simplified block diagram is shown in Figure 3-1, with the corresponding device pins described in Table 3-1. The PIC12C5XX can directly or indirectly address its register files and data memory.

All special function registers including the program counter are mapped in the data memory. The PIC12C5XX has a highly orthogonal (symmetrical) instruction set that makes it possible to carry out any operation on any register using any addressing mode.

This symmetrical nature and lack of ‘special optimal situations’ make programming with the PIC12C5XX simple yet efficient. In addition, the learning curve is reduced significantly.