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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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PIC16F84A 数据表(PDF) 64 Page - Microchip Technology |
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PIC16F84A 数据表(HTML) 64 Page - Microchip Technology |
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64 / 68 page  PIC16F84A DS35007A-page 64 Preliminary © 1998 Microchip Technology Inc. P Packaging .......................................................................... 55 PICDEM-1 Low-Cost PICmicro Demo Board ..................... 36 PICDEM-2 Low-Cost PIC16CXX Demo Board .................. 36 PICDEM-3 Low-Cost PIC16CXXX Demo Board ................ 36 PICSTART ® Plus Entry Level Development System ........ 35 Pinout Descriptions .............................................................. 4 Pointer, FSR ....................................................................... 11 PORTA ........................................................................... 4, 13 Initializing ................................................................... 13 PORTA Register ........................................ 7, 13, 14, 24 RA3:RA0 Block Diagram ............................................ 13 RA4 Block Diagram .................................................... 14 RA4/T0CKI Pin ................................................. 4, 13, 17 TRISA Register .................................... 7, 13, 14, 18, 24 PORTB ........................................................................... 4, 15 Initializing ................................................................... 15 PORTB Register ........................................ 7, 15, 16, 24 Pull-up Enable (RBPU Bit) ........................................... 9 RB0/INT Edge Select (INTEDG Bit) ............................. 9 RB0/INT Pin, External ...................................... 4, 16, 29 RB3:RB0 Block Diagram ............................................ 15 RB7:RB4 Block Diagram ............................................ 15 RB7:RB4 Interrupt on Change ......................... 4, 15, 29 RB7:RB4 Interrupt on Change Enable (RBIE Bit) ...... 10 RB7:RB4 Interrupt on Change Flag (RBIF Bit) .... 10, 15 TRISB Register .......................................... 7, 15, 16, 24 Power-on Reset (POR) .......................................... 21, 23, 25 Oscillator Start-up Timer (OST) ........................... 21, 25 PD Bit ............................................. 8, 23, 28, 31, 32, 34 Power-up Timer (PWRT) ..................................... 21, 25 PWRT Enable (PWRTE Bit) ....................................... 21 Time-out Sequence .................................................... 28 Time-out Sequence on Power-up ........................ 26, 27 TO Bit ....................................... 8, 23, 28, 30, 31, 32, 34 Prescaler ............................................................................ 17 Assignment (PSA Bit) ............................................ 9, 17 Block Diagram ............................................................ 18 Rate Select (PS2:PS0 Bits) ................................... 9, 17 Switching Prescaler Assignment ................................ 18 PRO MATE ® II Universal Programmer .............................. 35 Product Identification System ............................................. 67 Program Counter ................................................................ 11 PCL Register .................................................... 7, 11, 24 PCLATH Register ............................................ 7, 11, 24 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 ..................................... 33 R RAM. See Data Memory Reader Response .............................................................. 66 Register File ......................................................................... 6 Reset ............................................................................ 21, 23 Block Diagram ............................................................ 23 Reset Conditions for All Registers ............................. 24 Reset Conditions for Program Counter ...................... 24 Reset Conditions for STATUS Register ..................... 24 WDT Reset. See Watchdog Timer (WDT) Revision History ................................................................. 59 S Saving W Register and STATUS in RAM .......................... 29 SEEVAL ® Evaluation and Programming System .............. 37 SLEEP ............................................................. 21, 23, 29, 31 Software Simulator (MPLAB-SIM) ..................................... 37 Special Features of the CPU ............................................. 21 Special Function Registers .............................................. 6, 7 Speed, Operating ..................................................... 1, 22, 49 Stack .................................................................................. 11 STATUS Register ................................................ 7, 8, 24, 29 C Bit ....................................................................... 8, 34 DC Bit .................................................................... 8, 34 PD Bit ............................................ 8, 23, 28, 31, 32, 34 Reset Conditions ....................................................... 24 RP0 Bit .................................................................... 6, 8 TO Bit ...................................... 8, 23, 28, 30, 31, 32, 34 Z Bit ....................................................................... 8, 34 T Time-out (TO) Bit. See Power-on Reset (POR) Timer0 ................................................................................ 17 Block Diagram ........................................................... 17 Clock Source Edge Select (T0SE Bit) ......................... 9 Clock Source Select (T0CS Bit) .................................. 9 Overflow Enable (T0IE Bit) .................................. 10, 29 Overflow Flag (T0IF Bit) ................................ 10, 18, 29 Overflow Interrupt ................................................ 18, 29 RA4/T0CKI Pin, External Clock ................................. 17 TMR0 Register ................................................ 7, 18, 24 Timing Diagrams Diagrams and Specifications ..................................... 49 Time-out Sequence on Power-up ........................ 26, 27 W W Register ................................................................... 24, 29 Wake-up from SLEEP ................................ 21, 25, 28, 29, 31 Interrupts ............................................................. 31, 32 MCLR Reset .............................................................. 31 WDT Reset ................................................................ 31 Watchdog Timer (WDT) ............................................... 21, 30 Block Diagram ........................................................... 30 Enable (WDTE Bit) .................................................... 21 Programming Considerations .................................... 30 RC Oscillator ............................................................. 30 Time-out Period ......................................................... 30 WDT Reset, Normal Operation .................................. 23 WDT Reset, SLEEP ............................................ 23, 31 WWW, On-Line Support ................................................ 2, 65 |
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