PIC16F84AT-20SLASHSSROM datasheet(83/88 Pages) MICROCHIP

83 / 88 page

DS35007B-page 81

PIC16F84A

Power-on Reset (POR) ..........................................21

, 24, 26

Oscillator Start-up Timer (OST) ........................... 21

, 26

PD Bit................................................. 8

, 24, 28, 32, 33

Power-up Timer (PWRT) ..................................... 21

, 26

Time-out Sequence..................................................... 28

Time-out Sequence on Power-up ........................ 27

, 28

TO Bit...........................................8

, 24, 28, 30, 32, 33

Prescaler ............................................................................. 19

Assignment (PSA Bit) ................................................. 19

Block Diagram............................................................. 20

Rate Select (PS2:PS0 Bits) ........................................ 19

Switching Prescaler Assignment................................. 20

Prescaler, Timer0

Assignment (PSA Bit) ................................................... 9

Rate Select (PS2:PS0 Bits) .......................................... 9

PRO MATE II Universal Device Programmer ..................... 45

Program Counter ................................................................ 11

PCL Register....................................................7

, 11, 25

PCLATH Register ............................................7

, 11, 25

Reset Conditions......................................................... 24

Program Memory .................................................................. 5

General Purpose Registers........................................... 6

Interrupt Vector ...................................................... 5

, 29

RESET Vector............................................................... 5

Special Function Registers ...................................... 6

, 7

Programming, Device Instructions ...................................... 35

RAM.

See Data Memory

Registers

Configuration Word ..................................................... 21

EECON1 (EEPROM Control)...................................... 13

INTCON ...................................................................... 10

OPTION ........................................................................ 9

STATUS........................................................................ 8

Reset............................................................................ 21

, 24

Block Diagram...................................................... 24

, 26

MCLR Reset.

See MCLR

Power-on Reset (POR).

See Power-on Reset (POR)

Reset Conditions for All Registers .............................. 25

Reset Conditions for Program Counter....................... 24

Reset Conditions for STATUS Register...................... 24

WDT Reset.

See Watchdog Timer (WDT)

Revision History .................................................................. 75

RP1:RP0 (Bank Select) bits .................................................. 8

Saving W Register and STATUS in RAM ........................... 30

SLEEP ............................................................ 21

, 24, 29, 32

Software Simulator (MPLAB SIM)....................................... 44

Special Features of the CPU .............................................. 21

Special Function Registers .............................................. 6

, 7

Speed, Operating .............................................. 1

, 22, 23, 57

Stack ................................................................................... 11

STATUS Register ............................................... 7

, 8, 25, 30

C Bit .............................................................................. 8

DC Bit............................................................................ 8

PD Bit................................................. 8

, 24, 28, 32, 33

RESET Conditions ...................................................... 24

RP0 Bit.......................................................................... 6

TO Bit...........................................8

, 24, 28, 30, 32, 33

Z Bit............................................................................... 8

Time-out (TO) Bit.

See Power-on Reset (POR)

Timer0 ................................................................................ 19

Associated Registers.................................................. 20

Block Diagram ............................................................ 19

Clock Source Edge Select (T0SE Bit) .......................... 9

Clock Source Select (T0CS Bit) ................................... 9

Overflow Enable (T0IE Bit) ...................................10

, 29

Overflow Flag (T0IF Bit) ................................ 10

, 20, 29

Overflow Interrupt .................................................20

, 29

Prescaler.

See Prescaler

RA4/T0CKI Pin, External Clock .................................. 19

TMR0 Register ................................................ 7

, 20, 25

Timing Conditions ............................................................... 56

Timing Diagrams

CLKOUT and I/O ........................................................ 58

Diagrams and Specifications ...................................... 57

CLKOUT and I/O Requirements......................... 58

External Clock Requirements ............................. 57

RESET, Watchdog Timer, Oscillator Start-up

Timer and Power-up

Timer Requirements................................... 59

Timer0 Clock Requirements ............................... 60

External Clock ............................................................ 57

RESET, Watchdog Timer, Oscillator Start-up

Timer and Power-up Timer................................. 59

Time-out Sequence on Power-up.........................27

, 28

Timer0 Clock .............................................................. 60

Wake-up From SLEEP Through Interrupt .................. 32

Timing Parameter Symbology ............................................ 55

TO bit .................................................................................... 8

W Register ....................................................................25

, 30

Wake-up from SLEEP...............................21

, 26, 28, 29, 32

Interrupts ..............................................................32

, 33

MCLR Reset ............................................................... 32

WDT Reset ................................................................. 32

Watchdog Timer (WDT)................................................21

, 30

Block Diagram ............................................................ 31

Postscaler.

See Prescaler

Programming Considerations ..................................... 31

RC Oscillator .............................................................. 30

Time-out Period .......................................................... 30

WDT Reset, Normal Operation................................... 24

WDT Reset, SLEEP .............................................24

, 32

WWW, On-Line Support ....................................................... 2

Z (Zero) bit ............................................................................ 8

PIC16F84AT-20/SSROM Datasheet(PDF) 83 Page - Microchip Technology

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