Microchip Technology PIC16F716, Техническое описание

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PIC16F716
DS41206A-page 102
Preliminary

2003 Microchip Technology Inc.
FIGURE 12-8: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
(1)
TABLE 12-5: 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 10 — — ns
41* Tt0L T0CKI Low Pulse Width No Prescaler 0.5T
CY
+ 20 — — ns Must also meet
parameter 42
With Prescaler 10 — — ns
42* Tt0P T0CKI Period No Prescaler T
CY
+ 40 — — ns
With Prescaler Greater of:
20 or T
CY
+ 40
N
— — ns N = prescale
value
(2, 4,..., 256)
45* Tt1H T1CKI High Time Synchronous, Prescaler = 1 0.5T
CY
+ 20 — — ns Must also meet
parameter 47
Synchronous,
Prescaler =
2,4,8 Standard 15 — — ns
Asynchronous Standard 30 — — ns
46* Tt1L T1CKI Low Time Synchronous, Prescaler = 1 0.5T
CY
+ 20 — — ns Must also meet
parameter 47
Synchronous,
Prescaler =
2,4,8 Standard 15 — — ns
Asynchronous Standard 30 — — ns
47* Tt1P T1CKI input
period Synchronous Standard Greater of:
30
OR
T
CY
+ 40
N
— — ns N = prescale
value (1, 2, 4, 8)
Asynchronous Standard 60 — — ns
Ft1 Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN) 32.768 — 32.768 kHz
48* TCKEZtmr1 Delay from external clock edge to timer increment 2Tosc — 7Tosc —
* 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.
Note 1: Refer to Figure 12-3 for load conditions.
46
47
45
48
41
42
40
T0CKI
T1OSO/T1CKI
TMR0 or
TMR1