參數(shù)資料
型號(hào): PIC16LC74B-16
廠商: Microchip Technology Inc.
英文描述: 8-Bit CMOS Microcontrollers with A/D Converter
中文描述: 8位CMOS微控制器與A / D轉(zhuǎn)換器
文件頁數(shù): 15/41頁
文件大?。?/td> 322K
代理商: PIC16LC74B-16
PIC16LC74B-16/PTL16
1999 Microchip Technology Inc.
Preliminary
DS30026A-page 15
FIGURE 2-7:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
TABLE 2-5:
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ Max Units
Conditions
40*
Tt0H
T0CKI High Pulse Width
No Prescaler
0.5T
CY
+ 20
ns
Must also meet
parameter 42
With Prescaler
No Prescaler
With Prescaler
No Prescaler
With Prescaler
10
ns
ns
ns
ns
ns
41*
Tt0L
T0CKI Low Pulse Width
0.5T
CY
+ 20
10
T
CY
+ 40
Greater of:
20 or T
CY
+ 40
N
0.5T
CY
+ 20
25
50
0.5T
CY
+ 20
25
50
Must also meet
parameter 42
42*
Tt0P
T0CKI Period
N = prescale value
(2, 4,..., 256)
45*
Tt1H
T1CKI High Time
Synchronous, Prescaler = 1
Synchronous, Prescaler = 2,4,8
Asynchronous
Synchronous, Prescaler = 1
Synchronous, Prescaler = 2,4,8
ns
ns
ns
ns
ns
ns
Must also meet
parameter 47
46*
Tt1L
T1CKI Low Time
Must also meet
parameter 47
Asynchronous
47*
Tt1P
T1CKI input period Synchronous
Greater of:
50
OR
T
CY
+ 40
N
100
N = prescale value
(1, 2, 4, 8)
Asynchronous
ns
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 3V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
DC
200
kHz
48
2Tosc
7Tosc
*
Note:
Refer to Figure 2-2 for load conditions.
46
47
45
48
41
42
40
T0CKI
T1OSO/T1CKI
TMR0 or
TMR1
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