RFPIC12F675K Datasheet, PDF (106/136 Pages) Microchip Technology – 20-Pin FLASH-Based 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter

rfPIC12F675
FIGURE 13-9:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
T0CKI
40
41
42
T1CKI
TMR0 or
TMR1
45
46
47
48
TABLE 13-5: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ† Max Units Conditions
40* Tt0H
T0CKI High Pulse Width
No Prescaler
0.5 TCY + 20
——
ns
With Prescaler
10
— — ns
41* Tt0L
T0CKI Low Pulse Width
No Prescaler
0.5 TCY + 20
——
ns
With Prescaler
10
— — ns
42* Tt0P
T0CKI Period
Greater of:
— — ns N = prescale value
20 or TCY + 40
(2, 4, ..., 256)
N
45* Tt1H
T1CKI High Time Synchronous, No Prescaler
0.5 TCY + 20
——
ns
Synchronous,
with Prescaler
15
— — ns
Asynchronous
30
— — ns
46* Tt1L
T1CKI Low Time Synchronous, No Prescaler
0.5 TCY + 20
——
ns
Synchronous,
with Prescaler
15
— — ns
Asynchronous
30
— — ns
47* Tt1P
T1CKI Input
Period
Synchronous
Greater of:
— — ns N = prescale value
30 or TCY + 40
(1, 2, 4, 8)
N
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 TOSC*
—
7
—
TOSC*
* 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.
DS70091A-page 104
Preliminary
 2003 Microchip Technology Inc.