PIC17C42 Microchip Technology, PIC17C42 Datasheet - Page 157

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

FIGURE 17-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TABLE 17-4:
Parameter
1996 Microchip Technology Inc.
*
†
‡
§
Watchdog
Address /
Time-out
Time-out
No.
Internal
Internal
RESET
30
31
32
33
35
RESET
MCLR
PWRT
Timer
Data
POR
OSC
V
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.
These parameters are for design guidance only and are not tested, nor characterized.
This specification ensured by design.
DD
TmcL2adI MCLR to System Interface bus
TmcL
Tpwrt
Sym
Twdt
Tost
TIMER TIMING
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER REQUIREMENTS
32
Characteristic
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(Prescale = 1)
Oscillation Start-up Timer Period
Power-up Timer Period
(AD15:AD0) invalid
33
100 *
Min
40 *
5 *
—
35
Applicable Devices 42 R42 42A 43 R43 44
1024 T
30
Typ†
12
96
—
—
OSC
§
200 *
100 *
Max
25 *
—
31
Units
ms
ms
ms
ns
ns
PIC17C4X
T
OSC
= OSC1 period
DS30412C-page 157
Conditions