Datasheet

© 2009 Microchip Technology Inc. DS41236E-page 79
PIC12F508/509/16F505
TABLE 10-6: RESET, WATCHDOG TIMER AND DEVICE RESET TIMER – PIC12F508/509/16F505
AC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Operating Temperature -40°C ≤ TA ≤ +85°C (industrial)
-40°C ≤ T
A ≤ +125°C (extended)
Param
No.
Sym. Characteristic Min. Typ
(1)
Max. Units Conditions
30 T
MCLMCLR Pulse Width (low) 2000* — — ns VDD = 5.0V
31 TWDT Watchdog Timer Time-out Period
(no prescaler)
9*
9*
18*
18*
30*
40*
ms
ms
VDD = 5.0V (Industrial)
V
DD = 5.0V (Extended)
32 T
DRT Device Reset Timer Period
(2)
9*
9*
18*
18*
30*
40*
ms
ms
VDD = 5.0V (Industrial)
V
DD = 5.0V (Extended)
34 T
IOZ I/O High-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.