Datasheet

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04
DS70292G-page 354 © 2007-2012 Microchip Technology Inc.
TABLE 30-21: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤T
A ≤+125°C for Extended
Param
No.
Symbol Characteristic
(1)
Min Typ
(2)
Max Units Conditions
SY10 T
MCLMCLR Pulse Width (low) 2 — — μs -40°C to +85°C
SY11 T
PWRT Power-up Timer Period — 2
4
8
16
32
64
128
— ms -40°C to +85°C
User programmable
SY12 T
POR Power-on Reset Delay 3 10 30 μs -40°C to +85°C
SY13 T
IOZ I/O High-Impedance
from MCLR Low or
Watchdog Timer Reset
0.68 0.72 1.2 μs—
SY20 TWDT1 Watchdog Timer
Time-out Period
————See Section 27.4 “Watchdog
Timer (WDT)” and LPRC
specification F21 (Table 30-19)
SY30 TOST Oscillator Start-up
Timer Period
—1024TOSC ——TOSC = OSC1 period
SY35 T
FSCM Fail-Safe Clock
Monitor Delay
— 500 900 μs -40°C to +85°C
Note 1: These parameters are characterized but not tested in manufacturing.
2: Data in “Typ” column is at 3.3V, 25°C unless otherwise stated.