Datasheet

© 2005 Microchip Technology Inc. Preliminary DS41236B-page 77
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 ≤ T
A ≤ +85°C (industrial)
-40°C ≤ T
A ≤ +125°C (extended)
Operating Voltage V
DD range is described in
Section 10.1 "DC Characteristics"
Param
No.
Sym Characteristic Min Typ
(1)
Max Units Conditions
30 T
MCLMCLR Pulse Width (low) 2000* — — ns VDD = 5.0V
31 T
WDT 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 TDRT 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.