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

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PIC16F8X RETLW Return with Literal in W Syntax: [ label ] RETLW k Operands: 0 ≤ k ≤ 255 Operation: k → (W); TOS → PC Status Affected: None Encoding: 11 01xx kkkk kkkk Description: The W register is loaded with the eight bit literal ’k’. The program counter is loaded from the top of the stack (the return address). This is a two cycle instruction. Words: 1 Cycles: 2 Q Cycle Activity: Q1 Q2 Q3 Q4 1st Cycle Decode Read No-Opera literal ’k’ tion Example 2nd Cycle TABLE No-Operat ion No-Opera tion No-Opera tion Write to W, Pop from the Stack No-Operat ion CALL TABLE ;W contains table ;offset value • ;W now has table value • • ADDWF PC ;W = offset RETLW k1 ;Begin table RETLW k2 ; • • • RETLW kn ; End of table Before Instruction W = 0x07 After Instruction W = value of k8 RETURN Return from Subroutine Syntax: [ label ] RETURN Operands: None Operation: TOS → PC Status Affected: None Encoding: 00 0000 0000 1000 Description: Return from subroutine. The stack is POPed and the top of the stack (TOS) is loaded into the program counter. This is a two cycle instruction. Words: 1 Cycles: 2 Q Cycle Activity: Q1 Q2 Q3 Q4 1st Cycle Decode No-Opera No-Opera Pop from 2nd Cycle tion tion the Stack No-Operat ion Example RETURN No-Opera tion After Interrupt PC = TOS No-Opera tion No-Opera tion DS30430C-page 66 © 1998 Microchip Technology Inc.
RLF Rotate Left f through Carry Syntax: [ label ] RLF f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: See description below Status Affected: C Encoding: 00 1101 dfff ffff Description: The contents of register ’f’ are rotated one bit to the left through the Carry Flag. If ’d’ is 0 the result is placed in the W register. If ’d’ is 1 the result is stored back in register ’f’. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register ’f’ Register f Example RLF REG1,0 C Process data Write to destination Before Instruction REG1 = 1110 0110 C = 0 After Instruction REG1 = 1110 0110 W = 1100 1100 C = 1 PIC16F8X RRF Rotate Right f through Carry Syntax: [ label ] RRF f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: See description below Status Affected: C Encoding: 00 1100 dfff ffff Description: The contents of register ’f’ are rotated one bit to the right through the Carry Flag. If ’d’ is 0 the result is placed in the W register. If ’d’ is 1 the result is placed back in register ’f’. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register ’f’ Register f Process data Write to destination Example RRF REG1,0 Before Instruction REG1 = 1110 0110 C After Instruction = 0 REG1 = 1110 0110 W = 0111 0011 C = 0 © 1998 Microchip Technology Inc. DS30430C-page 67 C
Page 1 and 2:
Devices Included in this Data Sheet
Page 3 and 4:
1.0 GENERAL DESCRIPTION The PIC16F8
Page 5 and 6:
2.0 PIC16F8X DEVICE VARIETIES A var
Page 7 and 8:
3.0 ARCHITECTURAL OVERVIEW The high
Page 9 and 10:
TABLE 3-1 PIC16F8X PINOUT DESCRIPTI
Page 11 and 12:
4.0 MEMORY ORGANIZATION There are t
Page 13 and 14:
FIGURE 4-1: REGISTER FILE MAP - PIC
Page 15 and 16: 4.2.2.1 STATUS REGISTER The STATUS
Page 17 and 18: 4.2.2.3 INTCON REGISTER The INTCON
Page 19 and 20: 4.5 Indirect Addressing; INDF and F
Page 21 and 22: 5.0 I/O PORTS The PIC16F8X has two
Page 23 and 24: 5.2 PORTB and TRISB Registers PORTB
Page 25 and 26: 5.3 I/O Programming Considerations
Page 27 and 28: 6.0 TIMER0 MODULE AND TMR0 REGISTER
Page 29 and 30: 6.2 Using TMR0 with External Clock
Page 31 and 32: 6.3.1 SWITCHING PRESCALER ASSIGNMEN
Page 33 and 34: 7.0 DATA EEPROM MEMORY The EEPROM d
Page 35 and 36: 7.5 Write Verify Depending on the a
Page 37 and 38: 8.0 SPECIAL FEATURES OF THE CPU Wha
Page 39 and 40: FIGURE 8-2: CONFIGURATION WORD - PI
Page 41 and 42: FIGURE 8-6: EXTERNAL SERIES RESONAN
Page 43 and 44: PIC16F8X TABLE 8-3 RESET CONDITION
Page 45 and 46: PIC16F8X FIGURE 8-10: TIME-OUT SEQU
Page 47 and 48: 8.7 Time-out Sequence and Power-dow
Page 49 and 50: FIGURE 8-17: INT PIN INTERRUPT TIMI
Page 51 and 52: 8.11 Watchdog Timer (WDT) The Watch
Page 53 and 54: 8.12.3 WAKE-UP USING INTERRUPTS Whe
Page 55 and 56: 9.0 INSTRUCTION SET SUMMARY Each PI
Page 57 and 58: 9.1 Instruction Descriptions ADDLW
Page 59 and 60: BTFSS Bit Test f, Skip if Set Synta
Page 61 and 62: COMF Complement f Syntax: [ label ]
Page 63 and 64: INCFSZ Increment f, Skip if 0 Synta
Page 65: NOP No Operation Syntax: [ label ]
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 and 116: APPENDIX A: FEATURE IMPROVEMENTS -
Page 117 and 118:
PIC16F8X APPENDIX E: CONVERSION CON
Page 119 and 120:
INDEX Numerics 8.1 Configuration Bi
Page 121 and 122:
ON-LINE SUPPORT Microchip provides
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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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