Datasheet

PIC16F5X
DS41213D-page 34 © 2007 Microchip Technology Inc.
FIGURE 7-3: TIMER0 TIMING: INTERNAL CLOCK/PRESCALER 1:2
TABLE 7-1: REGISTERS ASSOCIATED WITH TIMER0
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
Power-on
Reset
Value on
MCLR and
WDT Reset
01h TMR0 Timer0 - 8-bit real-time clock/counter xxxx xxxx uuuu uuuu
N/A OPTION — — T0CS T0SE PSA PS2 PS1 PS0 --11 1111 --11 1111
Legend: Shaded cells not used by Timer0, - = unimplemented, x = unknown, u = unchanged.
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
PC
(Program
Counter)
Instruction
Fetch
Timer0
PC PC + 1 PC + 2 PC + 3 PC + 4 PC + 5 PC + 6
T0 NT0 + 1
MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF 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