PIC12C5XX
TABLE 11-5: RESET, WATCHDOG TIMER, AND DEVICE RESET TIMER - PIC12C508/C509
AC Characteristics Standard Operating Conditions (unless otherwise specified)
Operating Temperature
0°C ≤ TA ≤ +70°C (commercial)
–40°C ≤ TA ≤ +85°C (industrial)
–40°C ≤ TA ≤ +125°C (extended)
Operating Voltage VDD range is described in Section 11.1
Parameter
No.
(1)
Sym Characteristic
Min Typ
Max Units
Conditions
30
31
TmcL MCLR Pulse Width (low)
2000*
9*
—
—
ns VDD = 5 V
Twdt Watchdog Timer Time-out Period
(No Prescaler)
18*
30*
ms VDD = 5 V (Commercial)
(2)
32
34
TDRT Device Reset Timer Period
9*
—
18*
—
30*
ms VDD = 5 V (Commercial)
TioZ I/O Hi-impedance from MCLR Low
2000*
ns
*
These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design
guidance only and are not tested.
Note 2: See Table 11-6.
TABLE 11-6: DRT (DEVICE RESET TIMER PERIOD - PIC12C508/C509)
Oscillator Configuration
POR Reset
Subsequent Resets
IntRC & ExtRC
XT & LP
18 ms (typical)
18 ms (typical)
300 µs (typical)
18 ms (typical)
1999 Microchip Technology Inc.
DS40139E-page 73
MICROCHIP [ MICROCHIP ]
