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PIC16F570 Datasheet(PDF) 39 Page - Microchip Technology

Part # PIC16F570
Description  28-Pin, 8-Bit Flash Microcontroller
PDF  134 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F570 Datasheet(HTML) 39 Page - Microchip Technology

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 2013 Microchip Technology Inc.
Preliminary
DS40001684B-page 39
PIC16F570
FIGURE 7-2:
TIMER0 TIMING: INTERNAL CLOCK/NO PRESCALE
FIGURE 7-3:
TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2
TABLE 7-1:
REGISTERS ASSOCIATED WITH TIMER0
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on page
TMR0
Timer0 module Register
—
CM1CON0
C1OUT
C1OUTEN C1POL
C1T0CS
C1ON
C1NREF
C1PREF
C1WU
71
CM2CON0
C2OUT
C2OUTEN C2POL
C2PREF2
C2ON
C2NREF C2PREF1 C2WU
72
OPTION
RBWU
RBPU
T0CS
T0SE
PSA
PS2
PS1
PS0
22
TRIS(1)
I/O Control Registers (TRISA, TRISB, TRISC)
—
Legend: Shaded cells are not used by Timer0. – = unimplemented, x = unknown, u = unchanged.
Note 1:
The TRIS of the T0CKI pin is overridden when T0CS = 1.
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
Instruction
Fetch
Timer0
PC
PC + 1
PC + 2
PC + 3
PC + 4
PC + 6
T0
T0 + 1
T0 + 2
NT0
NT0 + 1
NT0 + 2
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 + 1
Read TMR0
reads NT0 + 2
Instruction
Executed
PC + 5
PC
(Program
Counter)
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
Instruction
Fetch
Timer0
PC
PC + 1
PC + 2
PC + 3
PC + 4
PC + 6
T0
T0 + 1
NT0
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 + 1
Read TMR0
reads NT0 + 2
Instruction
Executed
PC + 5
PC
(Program
Counter)



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