Datasheet

PIC16F526
DS41326E-page 94  2010 Microchip Technology Inc.
FIGURE 14-6: RESET, WATCHDOG TIMER AND DEVICE RESET TIMER TIMING
TABLE 14-9: RESET, WATCHDOG TIMER AND DEVICE RESET TIMER
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 14.1 “DC Characteristics: PIC16F526 (Industrial)”
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
Standard 9*
9*
18*
18*
30*
40*
ms
ms
V
DD = 5.0V (Industrial)
V
DD = 5.0V (Extended)
Short 0.5*
0.5*
1.125*
1.125*
2*
2.5*
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.
VDD
MCLR
Internal
POR
DRT
Time-out
(2)
Internal
Reset
Watchdog
Timer
Reset
32
31
34
I/O pin
(1)
32
32
34
30
Note 1: I/O pins must be taken out of High-Impedance mode by enabling the output drivers in software.
2: Runs in MCLR
or WDT Reset only in XT, LP and HS modes.