GENERAL DESCRIPTION

The PIC16F8X is a group in the PIC16CXX family of low-cost, high-performance, CMOS, fully-static, 8-bit microcontrollers. This group contains the following devices:

• PIC16F83

• PIC16F84

• PIC16CR83

• PIC16CR84

All PICmicro™ microcontrollers employ an advanced RISC architecture. PIC16F8X devices have enhanced core features, eight-level deep stack, and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with a separate 8-bit wide data bus. The two stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available. Additionally, a large register set is used to achieve a very high performance level.

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 - 10 MHz clock input

DC - 400 ns instruction cycle

• 14-bit wide instructions

• 8-bit wide data path

• 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

• 1000 erase/write cycles Flash program memory

• 10,000,000 erase/write cycles EEPROM data memory

• EEPROM Data Retention > 40 years

Peripheral Features:

• 13 I/O pins with individual direction control

• High current sink/source for direct LED drive

- 25 mA sink max. per pin

- 20 mA source max. per pin

• TMR0: 8-bit timer/counter with 8-bit programmable prescaler

Special Microcontroller Features:

• In-Circuit Serial Programming (ICSP™) - via two pins (ROM devices support only Data EEPROM programming)

• 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

CMOS Flash/EEPROM Technology:

• Low-power, high-speed technology

• Fully static design

• Wide operating voltage range:

- Commercial: 2.0V to 6.0V

- Industrial: 2.0V to 6.0V

• Low power consumption:

- < 2 mA typical @ 5V, 4 MHz

- 15 µA typical @ 2V, 32 kHz

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PIC16F84AT-20I/SO属于集成电路（IC） > 微控制器。微芯科技股份有限公司制造生产的PIC16F84AT-20I/SO微控制器微控制器产品是相对复杂的用户可编程数字逻辑器件。这些产品与视为微控制器的器件密切相关，两者之间的区别主要体现在制造商选择的用词。不过按照传统，微控制器集成了工作存储器，也更可能包含混合信号外设，并且往往与更简单的软件范例结合使用，旨在重复执行一系列预定义的任务。