The PIC16F/LF720 and PIC16F/LF721 devices are programmed using In-Circuit Serial Programming™ (ICSP™). This programming specification applies to the PIC16F/LF720 and PIC16F/LF721 devices in all packages which is important in the process of Extract PIC MCU PIC16F720. With the exception of memory size and the voltage regulator, all other aspects of the PIC16F/LF720 and PIC16F/LF721 devices are identical.
Configuration Words
The PIC16F/LF720 and PIC16F/LF721 have two Configuration Words, Configuration Word 1 (2007h) and Configuration Word 2 (2008h). The individual bits within these Configuration Words are used to enable or disable device functions such as the Brown-out Reset, code protection and Power-up Timer.
Calibration Words
For the PIC16F/LF720 and PIC16F/LF721 devices, the 16 MHz internal oscillator (INTOSC) and the Brown-out Reset (BOR) are factory calibrated and stored in Calibration Words 1 and 2 (2009h and 200Ah). The Calibration Words do not participate in erase operations. The device can be erased without affecting the Calibration Words.