PIC16F84A集成電路（IC）的微控制器規(guī)格書(shū)PDF中文資料

High Performance RISC CPU Features:

? Only 35 single word instructions to learn

? All instructions single-cycle except for program

branches which are two-cycle

? Operating speed: DC - 20 MHz clock input

DC - 200 ns instruction cycle

? 1024 words of program memory

? 68 bytes of Data RAM

? 64 bytes of Data EEPROM

? 14-bit wide instruction words

? 8-bit wide data bytes

? 15 Special Function Hardware registers

? Eight-level deep hardware stack

? Direct, indirect and relative addressing modes

? Four interrupt sources:

- External RB0/INT pin

- TMR0 timer overflow

- PORTB interrupt-on-change

- Data EEPROM write complete

Peripheral Features:

? 13 I/O pins with individual direction control

? High current sink/source for direct LED drive

- 25 mA sink max. per pin

- 25 mA source max. per pin

? TMR0: 8-bit timer/counter with 8-bit

programmable prescaler

Special Microcontroller Features:

? 10,000 erase/write cycles Enhanced FLASH

Program memory typical

? 10,000,000 typical erase/write cycles EEPROM

Data memory typical

? EEPROM Data Retention > 40 years

? In-Circuit Serial Programming? (ICSP?) - via

two pins

? Power-on Reset (POR), Power-up Timer (PWRT),

Oscillator Start-up Timer (OST)

? Watchdog Timer (WDT) with its own On-Chip RC

Oscillator for reliable operation

? Code protection

? Power saving SLEEP mode

? Selectable oscillator options