參數(shù)資料
型號: 16F84A
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE BLUE 20 FT
中文描述: 18引腳閃存/ EEPROM的8位微控制器
文件頁數(shù): 28/124頁
文件大小: 1322K
代理商: 16F84A
PIC16F8X
DS30430C-page 28
1998 Microchip Technology Inc.
FIGURE 6-3:
TMR0 TIMING: INTERNAL CLOCK/PRESCALE 1:2
FIGURE 6-4:
TMR0 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
PC
Instruction
TMR0
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
Read TMR0
reads NT0
Read TMR0
reads NT0
Read TMR0
reads NT0
Read TMR0
Read TMR0
reads NT0 + 1
T0+1
NT0
Instruction
Execute
Q2
Q1
Q3
Q4
Q2
Q1
Q3
Q4
Q2
Q1
Q3
Q4
Q2
Q1
Q3
Q4
Q2
Q1
Q3
Q4
1
1
OSC1
CLKOUT
(3)
TMR0 timer
T0IF bit
(INTCON<2>)
FEh
GIE bit
(INTCON<7>)
INSTRUCTION FLOW
PC
Instruction
PC
PC +1
PC +1
0004h
0005h
Instruction
executed
Inst (PC)
Inst (PC-1)
Inst (PC+1)
Inst (PC)
Inst (0004h)
Inst (0005h)
Inst (0004h)
Dummy cycle
Dummy cycle
FFh
00h
01h
02h
Note 2: Interrupt latency = 3.25Tcy, where Tcy = instruction cycle time.
3: CLKOUT is available only in RC oscillator mode.
The TMR0 register will roll over 3 Tosc cycles later.
4
Interrupt Latency
(2)
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