参数资料
型号: RFPIC12F675K-E/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件页数: 9/123页
文件大小: 5438K
代理商: RFPIC12F675K-E/SS
rfPIC12F675
DS70091A-page 104
Preliminary
2003 Microchip Technology Inc.
FIGURE 13-9:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
TABLE 13-5:
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
T0CKI
T1CKI
40
41
42
45
46
47
48
TMR0 or
TMR1
Param
No.
Sym
Characteristic
Min
Typ Max Units
Conditions
40*
Tt0H
T0CKI High Pulse Width
No Prescaler
0.5 T
CY + 20
ns
With Prescaler
10
ns
41*
Tt0L
T0CKI Low Pulse Width
No Prescaler
0.5 T
CY + 20
ns
With Prescaler
10
ns
42*
Tt0P
T0CKI Period
Greater of:
20 or T
CY + 40
N
ns
N = prescale value
(2, 4, ..., 256)
45*
Tt1H
T1CKI High Time Synchronous, No Prescaler
0.5 T
CY + 20
ns
Synchronous,
with Prescaler
15
ns
Asynchronous
30
ns
46*
Tt1L
T1CKI Low Time
Synchronous, No Prescaler
0.5 T
CY + 20
ns
Synchronous,
with Prescaler
15
ns
Asynchronous
30
ns
47*
Tt1P
T1CKI Input
Period
Synchronous
Greater of:
30 or T
CY + 40
N
ns
N = prescale value
(1, 2, 4, 8)
Asynchronous
60
ns
Ft1
Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN)
DC
200*
kHz
48
TCKEZtmr1 Delay from external clock edge to timer increment
2 T
OSC*
7
T
OSC*
*
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.
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