PIC17C42 Microchip Technology, PIC17C42 Datasheet - Page 158

• Manufacturer Part Number: PIC17C42
• Description: High-Performance 8-Bit CMOS EPROM/ROM Microcontroller
• Manufacturer: Microchip Technology

PIC17C4X
FIGURE 17-5: TIMER0 CLOCK TIMINGS
TABLE 17-5:
FIGURE 17-6: TIMER1, TIMER2, AND TIMER3 CLOCK TIMINGS
TABLE 17-6:
DS30412C-page 158
Applicable Devices 42 R42 42A 43 R43 44
Parameter
Parameter
*
†
§
*
†
§
No.
45
46
47
48
No.
TCLK12
or
TCLK3
TMRx
RA1/T0CKI
40
41
42
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.
This specification ensured by design.
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.
This specification ensured by design.
TckE2tmrI Delay from selected External Clock Edge to
Tt123H TCLK12 and TCLK3 high time
Tt123P
Tt123L
Tt0H T0CKI High Pulse Width
Sym Characteristic
Tt0P T0CKI Period
Sym
Tt0L T0CKI Low Pulse Width
TIMER0 CLOCK REQUIREMENTS
TIMER1, TIMER2, AND TIMER3 CLOCK REQUIREMENTS
Characteristic
TCLK12 and TCLK3 low time
TCLK12 and TCLK3 input period
Timer increment
45
40
No Prescaler
With Prescaler
No Prescaler
With Prescaler
42
47
0.5 T
0.5 T
41
46
T
0.5T
0.5T
2T
CY
T
CY
CY
CY
Min
OSC
CY
CY
+ 40 §
N
Min
10*
10*
+ 40 §
N
+ 20 §
+ 20 §
+ 20 §
+ 20 §
§
48
Typ
—
—
—
—
Typ† Max Units Conditions
†
—
—
—
—
—
6 Tosc §
Max
—
—
—
—
—
—
—
—
1996 Microchip Technology Inc.
48
Units Conditions
ns
ns
ns
ns
ns
ns
ns
ns
—
N = prescale value
(1, 2, 4, ..., 256)
N = prescale value
(1, 2, 4, 8)