PIC16F1938 Datasheet, PDF (400/452 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

PIC16(L)F1938/9
TABLE 30-6: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C TA +125°C
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 Synchronous, No Prescaler
0.5 TCY + 20 —
—
ns
Time
Synchronous,
15
—
—
ns
with Prescaler
Asynchronous
30
—
—
ns
46* TT1L
T1CKI Low Synchronous, No Prescaler
0.5 TCY + 20 —
—
ns
Time
Synchronous, with Prescaler
15
—
—
ns
Asynchronous
30
—
—
ns
47* TT1P
T1CKI Input Synchronous
Period
Greater of:
—
—
ns N = prescale value
30 or TCY + 40
(1, 2, 4, 8)
N
Asynchronous
60
—
—
ns
48
FT1
Timer1 Oscillator Input Frequency Range
(oscillator enabled by setting bit T1OSCEN)
32.4
32.768 33.1 kHz
49* TCKEZTMR1 Delay from External Clock Edge to Timer
Increment
2 TOSC
— 7 TOSC — Timers in Sync
mode
* These parameters are characterized but not tested.
† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
FIGURE 30-11: CAPTURE/COMPARE/PWM TIMINGS (CCP)
CCPx
(Capture mode)
Note: Refer to Figure 30-5 for load conditions.
CC01
CC03
CC02
TABLE 30-7: CAPTURE/COMPARE/PWM REQUIREMENTS (CCP)
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C  TA  +125°C
Param
No.
Sym.
Characteristic
Min.
Typ† Max. Units
Conditions
CC01* TccL CCPx Input Low Time
No Prescaler 0.5TCY + 20 —
—
ns
With Prescaler
20
—
—
ns
CC02* TccH CCPx Input High Time
No Prescaler 0.5TCY + 20 —
—
ns
With Prescaler
20
—
—
ns
CC03* TccP CCPx Input Period
3TCY + 40 —
—
ns N = prescale value (1, 4 or 16)
N
* These parameters are characterized but not tested.
† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
DS41574A-page 400
Preliminary
 2011 Microchip Technology Inc.