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PIC16C505T-20I/SL データシートの表示(PDF) - Microchip Technology

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PIC16C505T-20I/SL
Microchip
Microchip Technology Microchip
PIC16C505T-20I/SL Datasheet PDF : 85 Pages
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PIC16C505
FIGURE 6-2: TIMER0 TIMING: INTERNAL CLOCK/NO PRESCALE
PC
(Program
Counter)
Instruction
Fetch
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-1
PC
PC+1
PC+2
PC+3
PC+4
PC+5
PC+6
MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W
Timer0
T0
Instruction
Executed
T0+1
T0+2
NT0
NT0+1
NT0+2
Write TMR0 Read TMR0 Read TMR0 Read TMR0 Read TMR0 Read TMR0
executed
reads NT0 reads NT0
reads NT0 reads NT0 + 1 reads NT0 + 2
FIGURE 6-3: TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2
PC
(Program
Counter)
Instruction
Fetch
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-1
PC
PC+1
PC+2
PC+3
PC+4
PC+5
MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W
PC+6
Timer0
T0
T0+1
NT0
NT0+1
T0
Instruction
Execute
Write TMR0 Read TMR0 Read TMR0 Read TMR0 Read TMR0 Read TMR0
executed
reads NT0 reads NT0 reads NT0 reads NT0 reads NT0 + 1
TABLE 6-1: 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
All Other
Resets
01h
TMR0 Timer0 - 8-bit real-time clock/counter
xxxx xxxx uuuu uuuu
N/A
OPTION RBWU RBPU T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111
N/A
TRISC
— RC5 RC4 RC3 RC2 RC1 RC0 --11 1111 --11 1111
Legend: Shaded cells not used by Timer0, - = unimplemented, x = unknown, u = unchanged.
DS40192C-page 24
© 1999 Microchip Technology Inc.

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