Special Microcontroller Features of PIC16F721-I/P – PIC Microcontroller:

• Precision Internal Oscillator:
- 16 MHz or 500 kHz operation
- Factory calibrated to ±1%, typical
- Software tunable
- Software selectable ÷1, ÷2, ÷4 or ÷8 divider
• Power-Saving Sleep mode
• Industrial and Extended Temperature Range
• Power-on Reset (POR)
• Power-up Timer (PWRT)
• Brown-out Reset (BOR)
• Multiplexed Master Clear with Pull-up/Input Pin
• Programmable Code Protection
• In-Circuit Serial ProgrammingTM (ICSPTM) via Two
Pins
• High-Endurance Flash Cell:
- 10,000 write Flash endurance (typical)
- Flash retention: > 40 years
• Wide Operating Voltage Range:
- 1.8V to 5.5V (PIC16F720/721)
- 1.8V to 3.6V (PIC16LF720/721)

High-Performance RISC CPU of PIC16F721-I/P – PIC Microcontroller:

• Only 35 Instructions to Learn:
- All single-cycle instructions except branches
• Operating Speed:
- DC – 16 MHz oscillator/clock input
- DC – 250 ns instruction cycle
• Up to 4K x 14 Words of Flash Program Memory
• Up to 256 bytes of Data Memory (RAM)
• Interrupt Capability
• 8-Level Deep Hardware Stack
• Direct, Indirect and Relative Addressing modes
• Processor Self-Write/Read access to Program Memory

Low-Power Features of PIC16F721-I/P – PIC Microcontroller:

• Standby Current:
- 50 nA @ 1.8V, typical
• Operating Current:
- 100 μA @ 1 MHz, 1.8V, typical
• Low-Power Watchdog Timer Current:
- 500nA @ 1.8V, typical