PIC17C42 Microchip Technology, PIC17C42 Datasheet - Page 186

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

PIC17C4X
FIGURE 19-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, AND POWER-UP
TABLE 19-4:
DS30412C-page 186
Applicable Devices 42 R42 42A 43 R43 44
Parameter
*
†
‡
§
Watchdog
Address /
No.
Timeout
Timeout
30
31
32
33
35
Internal
Internal
RESET
RESET
MCLR
PWRT
Data
Timer
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 Inter-
TmcL
Tpwrt
Sym
Twdt
Tost
32
TIMER TIMING
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER REQUIREMENTS
Characteristic
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(Prescale = 1)
Oscillation Start-up Timer Period
Power-up Timer Period
face bus (AD15:AD0>)
invalid
33
PIC17CR42/42A/
43/R43/44
PIC17LCR42/
42A/43/R43/44
100 *
35
Min
40 *
5 *
—
—
—
30
1024T
Typ†
12
96
—
—
—
OSC
§
200 *
100 *
120 *
Max
25 *
—
—
31
1996 Microchip Technology Inc.
Units
ms
ms
ms
ns
ns
ns
V
V
T
V
OSC
DD
DD
DD
= 5V
= 5V
= 5V
Conditions
= OSC1 period