PIC16F8X, 18-Pin FLASH/EEPROM 8-Bit MCU Data Sheet - Microchip

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PIC16F8X APPENDIX C: WHAT’S NEW IN THIS DATA SHEET Here’s what’s new in this data sheet: 1. DC & AC Characteristics Graphs/Tables section for PIC16F8X devices has been added. 2. An appendix on conversion considerations has been added. This explains differences for customers wanting to go from PIC16C84 to PIC16F84 or similar device. APPENDIX D: WHAT’S CHANGED IN THIS DATA SHEET Here’s what’s changed in this data sheet: 1. Errata information has been included. 2. Option register name has been changed from OPTION to OPTION_REG. This is consistant with other data sheets and header files, and resolves the conflict between the OPTION command and OPTION register. 3. Errors have been fixed. 4. The appendix containing PIC16/17 microcontrollers has been removed. DS30430C-page 116 © 1998 Microchip Technology Inc.
PIC16F8X APPENDIX E: CONVERSION CONSIDERATIONS - PIC16C84 TO PIC16F83/F84 AND PIC16CR83/CR84 Considerations for converting from the PIC16C84 to the PIC16F84 are listed in the table below. These considerations apply to converting from the PIC16C84 to the PIC16F83 (same as PIC16F84 except for program and data RAM memory sizes) and the PIC16CR84 and PIC16CR83 (ROM versions of Flash devices). Development Systems support is available for all of the PIC16X8X devices. Difference PIC16C84 PIC16F84 The polarity of the PWRTE bit has been reversed. Ensure that the programmer has this bit correctly set before programming. The PIC16F84 (and PIC16CR84) have larger RAM sizes. Ensure that this does not cause an issue with your program. The MCLR pin now has an on-chip filter. The input signal on the MCLR pin will require a longer low pulse to generate an interrupt. Some electrical specifications have been improved (see IPD example). Compare the electrical specifications of the two devices to ensure that this will not cause a compatibility issue. PORTA and crystal oscillator values less than 500kHz PWRTE PWRTE RAM = 36 bytes RAM = 68 bytes MCLR pulse width (low) = 350ns; 2.0V ≤ VDD ≤ 3.0V = 150ns; 3.0V ≤ VDD ≤ 6.0V IPD (typ @ 2V) = 26μA IPD (max @ 4V, WDT disabled) =100μA (PIC16C84) =100μA (PIC16LC84) For crystal oscillator configurations operating below 500kHz, the device may generate a spurious internal Q-clock when PORTA switches state. MCLR pulse width (low) = 1000ns; 2.0V ≤ VDD ≤ 6.0V IPD (typ @ 2V) < 1μA IPD (max @ 4V, WDT disabled) =14μA (PIC16F84) =7μA (PIC16LF84) RB0/INT pin TTL TTL/ST* (* This buffer is a Schmitt Trigger input when configured as the external interrupt.) EEADR and IDD It is recommended that the EEADR bits be cleared. When either of these bits is set, the maximum IDD for the device is higher than when both are cleared. Code Protect 1 CP bit 9 CP bits Recommended value of REXT for RC oscillator circuits © 1998 Microchip Technology Inc. DS30430C-page 117 N/A N/A REXT = 3kΩ - 100kΩ REXT = 5kΩ - 100kΩ GIE bit unintentional enable If an interrupt occurs while the Global Interrupt Enable (GIE) bit is being cleared, the GIE bit may unintentionally be re-enabled by the user’s Interrupt Service Routine (the RETFIE instruction). N/A
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Devices Included in this Data Sheet
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1.0 GENERAL DESCRIPTION The PIC16F8
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2.0 PIC16F8X DEVICE VARIETIES A var
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3.0 ARCHITECTURAL OVERVIEW The high
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TABLE 3-1 PIC16F8X PINOUT DESCRIPTI
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4.0 MEMORY ORGANIZATION There are t
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FIGURE 4-1: REGISTER FILE MAP - PIC
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4.2.2.1 STATUS REGISTER The STATUS
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4.2.2.3 INTCON REGISTER The INTCON
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4.5 Indirect Addressing; INDF and F
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5.0 I/O PORTS The PIC16F8X has two
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5.2 PORTB and TRISB Registers PORTB
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5.3 I/O Programming Considerations
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6.0 TIMER0 MODULE AND TMR0 REGISTER
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6.2 Using TMR0 with External Clock
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6.3.1 SWITCHING PRESCALER ASSIGNMEN
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7.0 DATA EEPROM MEMORY The EEPROM d
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7.5 Write Verify Depending on the a
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8.0 SPECIAL FEATURES OF THE CPU Wha
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FIGURE 8-2: CONFIGURATION WORD - PI
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FIGURE 8-6: EXTERNAL SERIES RESONAN
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PIC16F8X TABLE 8-3 RESET CONDITION
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PIC16F8X FIGURE 8-10: TIME-OUT SEQU
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8.7 Time-out Sequence and Power-dow
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FIGURE 8-17: INT PIN INTERRUPT TIMI
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8.11 Watchdog Timer (WDT) The Watch
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8.12.3 WAKE-UP USING INTERRUPTS Whe
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9.0 INSTRUCTION SET SUMMARY Each PI
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9.1 Instruction Descriptions ADDLW
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BTFSS Bit Test f, Skip if Set Synta
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COMF Complement f Syntax: [ label ]
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INCFSZ Increment f, Skip if 0 Synta
Page 65 and 66: NOP No Operation Syntax: [ label ]
Page 67 and 68: RLF Rotate Left f through Carry Syn
Page 69 and 70: SUBWF Subtract W from f Syntax: [ l
Page 71 and 72: 10.0 DEVELOPMENT SUPPORT 10.1 Devel
Page 73 and 74: MPASM has the following features to
Page 75 and 76: PIC16F83/84 PIC16F8X 11.0 ELECTRICA
Page 77 and 78: PIC16F83/84 PIC16F8X 11.1 DC CHARAC
Page 79 and 80: PIC16F83/84 PIC16F8X 11.3 DC CHARAC
Page 81 and 82: TABLE 11-2 TIMING PARAMETER SYMBOLO
Page 83 and 84: FIGURE 11-4: CLKOUT AND I/O TIMING
Page 85 and 86: FIGURE 11-6: TIMER0 CLOCK TIMINGS T
Page 87 and 88: PIC16CR83/84 PIC16F8X 12.0 ELECTRIC
Page 89 and 90: PIC16CR83/84 PIC16F8X 12.1 DC CHARA
Page 91 and 92: PIC16CR83/84 PIC16F8X 12.3 DC CHARA
Page 93 and 94: TABLE 12-2 TIMING PARAMETER SYMBOLO
Page 95 and 96: FIGURE 12-4: CLKOUT AND I/O TIMING
Page 97 and 98: FIGURE 12-6: TIMER0 CLOCK TIMINGS T
Page 99 and 100: 13.0 DC & AC CHARACTERISTICS GRAPHS
Page 101 and 102: FIGURE 13-3: TYPICAL RC OSCILLATOR
Page 103 and 104: FIGURE 13-8: VTH (INPUT THRESHOLD V
Page 105 and 106: FIGURE 13-11: TYPICAL IDD vs. FREQU
Page 107 and 108: FIGURE 13-13: WDT TIMER TIME-OUT PE
Page 109 and 110: FIGURE 13-17: IOH vs. VOH, VDD = 3
Page 111 and 112: 14.0 PACKAGING INFORMATION 14.1 Pac
Page 113 and 114: Package Type: K04-051 18-Lead Plast
Page 115: APPENDIX A: FEATURE IMPROVEMENTS -
Page 119 and 120: INDEX Numerics 8.1 Configuration Bi
Page 121 and 122: ON-LINE SUPPORT Microchip provides
Page 123 and 124: PIC16F8X PRODUCT IDENTIFICATION SYS
Page 125: M AMERICAS Corporate Office 2355 We
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PIC16F8X, 18-Pin FLASH/EEPROM 8-Bit MCU Data Sheet - Microchip

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