參數(shù)資料
型號： PIC16CR7X
廠商： Microchip Technology Inc.
英文描述： 28/40-Pin, 8-Bit CMOS ROM Microcontrollers
中文描述： 28/40-Pin，8位微控制器的CMOS光盤
文件頁數(shù)： 129/172頁
文件大?。?/td> 1506K
代理商： PIC16CR7X
2007 Microchip Technology Inc.
DS21993C-page 127
PIC16CR7X
FIGURE 15-7:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
TABLE 15-4:
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
40*
Tt0H
T0CKI High Pulse Width
No Prescaler
With Prescaler
No Prescaler
With Prescaler
No Prescaler
With Prescaler
0.5T
CY
+ 20
10
0.5T
CY
+ 20
10
T
CY
+ 40
Greater of:
20 or T
CY
+ 40
N
0.5T
CY
+ 20
15
25
30
50
0.5T
CY
+ 20
15
25
30
50
Greater of:
30 or T
CY
+ 40
N
Greater of:
50 or T
CY
+ 40
N
60
100
DC
—
—
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
Must also meet
parameter 42
41*
Tt0L
T0CKI Low Pulse Width
Must also meet
parameter 42
42*
Tt0P
T0CKI Period
N = prescale
value (2, 4, ...,
256)
Must also meet
parameter 47
45*
Tt1H
T1CKI High Time Synchronous, Prescaler = 1
Synchronous,
Prescaler = 2,4,8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Standard(
5V
)
Extended(
3V
)
Standard(
5V
)
Extended(
3V
)
Asynchronous
46*
Tt1L
T1CKI Low Time
Synchronous, Prescaler = 1
Synchronous,
Prescaler = 2,4,8
Must also meet
parameter 47
Standard(
5V
)
Extended(
3V
)
Standard(
5V
)
Extended(
3V
)
Standard(
5V
)
Asynchronous
47*
Tt1P
T1CKI Input
Period
Synchronous
N = prescale
value (1, 2, 4, 8)
Extended(
3V
)
N = prescale
value (1, 2, 4, 8)
Asynchronous
Standard(
5V
)
Extended(
3V
)
—
—
—
—
—
200
ns
ns
kHz
Ft1
Timer1 Oscillator Input Frequency Range
(oscillator enabled by setting bit T1OSCEN)
TCKEZtmr1 Delay from External Clock Edge to Timer Increment
*
These parameters are characterized but not tested.
Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
48
2 T
OSC
—
7 T
OSC
—
Note:
Refer to Figure 15-2 for load conditions.
46
47
45
48
41
42
40
RA4/T0CKI
RC0/T1OSO/T1CKI
TMR0 or TMR1
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