PIC12C67X datasheet(40/129 Pages) MICROCHIP

Part #	PIC12C67X

Description	8-Pin, 8-Bit CMOS Microcontroller with A/D Converter and EEPROM Data Memory

PDF	129 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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40 / 129 page

PIC12C67X

DS30561B-page 40

FIGURE 7-3:

TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2

FIGURE 7-4:

TIMER0 INTERRUPT TIMING

PC-1

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

(Program

Counter)

Instruction

Fetch

TMR0

PC+1

PC+2

PC+3

PC+4

PC+5

PC+6

NT0+1

MOVWF TMR0 MOVF TMR0,WMOVF TMR0,WMOVF TMR0,WMOVF TMR0,WMOVF TMR0,W

Write TMR0

executed

Read TMR0

reads NT0

Read TMR0

reads NT0

Read TMR0

reads NT0

Read TMR0

reads NT0

Read TMR0

reads NT0 + 1

T0+1

NT0

Instruction

Execute

OSC1

CLKOUT(3)

Timer0

T0IF bit

(INTCON<2>)

FEh

GIE bit

(INTCON<7>)

INSTRUCTION

Instruction

fetched

PC +1

0004h

0005h

Instruction

executed

Inst (PC)

Inst (PC-1)

Inst (PC+1)

Inst (PC)

Inst (0004h)

Inst (0005h)

Inst (0004h)

Dummy cycle

FFh

00h

01h

02h

FLOW

Interrupt Latency(2)

Note 1:

Interrupt flag bit T0IF is sampled here (every Q1).

Interrupt latency = 3TCY where TCY = instruction cycle time.

CLKOUT is available only in the INTRC and EXTRC oscillator modes.

PIC12C67X Datasheet(PDF) 40 Page - Microchip Technology

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