We can Extract MCU PIC16C712 Firmware, please view the MCU PIC16C712 features for your reference:
The LCD module can operate during Sleep. The selection is controlled by bit SLPEN (LCDCON<6>). Setting the SLPEN bit allows the LCD module to go to Sleep. Clearing the SLPEN bit allows the module to continue to operate during Sleep when extract firmware from MCU.
If a SLEEP instruction is executed and SLPEN = 1, the LCD module will cease all functions and go into a very low-current Consumption mode. The module will stop operation immediately and drive the minimum LCD voltage on both segment and common lines if mcu firmware being extracted.
Figure 9-17 shows this operation. To ensure that no DC component is introduced on the panel, theSLEEP instruction should be executed immediately after a LCD frame boundary. The LCD interrupt can be used to determine the frame boundary. See Section 9.8 “LCD Interrupts” for the formulas to calculate the delay before mcu firmware extraction.
If a SLEEP instruction is executed and SLPEN = 0, the module will continue to display the current contents of the LCDDATA registers. To allow the module to continue operation while in Sleep, the clock source must be either the LFINTOSC or T1OSC external oscillator. While in Sleep, the LCD data cannot be changed. The LCD module current consumption will not decrease in this mode; however, the overall consumption of the device will be lower due to shut down of the core and other peripheral functions from IC extraction.
Table 9-4 shows the status of the LCD module during a Sleep while using each of the three available clock sources: The following is the sequence of steps to configure the LCD module. The Programmable Low-Voltage Detect module is an interrupt driven supply level detection.
The voltage detection monitors the internal power supply. The PIC16F917/916/914/913 device supports eight internal PLVD trip points. See Register 10-1 for available PLVD trip point voltages. The PIC16F91X stores the PLVD calibration values in fuses located in the Calibration Word 2 (2009h) in the process of MCU Cracking.
The Calibration Word 2 is not erased when using the specified bulk erase sequence in the “PIC16F91X Memory Programming Specification” (DS41244) and thus, does not require reprogramming. The Universal Synchronous Asynchronous Receiver Transmitter (USART) module is one of the two serial I/O modules.
(USART is also known as a Serial Communications Interface or SCI.) The USART can be configured as a full-duplex asynchronous system that can communicate with peripheral devices, such as CRT terminals and personal computers, or it can be configured as a half-duplex synchronous system that can communicate with peripheral devices, such as A/D or D/A integrated circuits, serial EEPROMs, etc.
