The PIC16F684 has a 13-bit program counter capable of addressing an 8k x 14 program memory space. Only the first 2k x 14 (0000h-07FFh) for the PIC16F684 is physically implemented. Accessing a location above these boundaries will cause a wrap around within the first 2k x 14 space. The Reset vector is at 0000h and the interrupt vector is at 0004h

The PIC16F688 has a 13-bit program counter capable of addressing a 4K x 14 program memory space. Only the first 4K x 14 (0000h-01FFF) for the PIC16F688 is physically implemented. Accessing a location above these boundaries will cause a wrap-around within the first 4K x 14 space. The Reset vector is at 0000h and the interrupt vector is at 0004h

2.0 MEMORY ORGANIZATION There are two memory blocks in the PIC16F716 device. Each block (program memory and data memory) has its own bus so that concurrent access can occur.The PIC16F716 has a 13-bit program counter capable of addressing an 8K x 14 program memory space. The PIC16F716 has 2K x 14 words of program memory. Accessing a location above the physically implemented address will cause a wrap-around. The Reset vector is at 0000h and the interrupt vector is at 0004h

The PIC16F690 is a 8-bit Flash-based Microcontroller with A/D Controller and Enhanced Capture/Compare PWM . The following are the features:- ? Timer0: 8-bit timer/counter with 8-bit prescaler ? Timer1: 16-bit timer/counter with prescaler can be incremented during Sleep via external crystal/clock ? Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler ? Enhanced Capture, Compare, PWM module: - Capture is 16-bit, max. resolution is 12.5 ns - Compare is 16-bit, max. resolution is 200 ns - PWM maximum resolution is 10-bit - Enhanced PWM: - Single, Half-Bridge and Full-Bridge modes - Digitally programmable dead-band delay - Auto-shutdown/restart ? 8-bit multi-channel Analog-to-Digital Converter ? 13 I/O pins with individual direction control ? Programmable weak pull-ups on PORTB