Datasheet

© 2007-2012 Microchip Technology Inc. DS70283K-page 249
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
TABLE 24-21: 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 Min Typ
(2)
Max Units Conditions
SY10 T
MCLMCLR Pulse Width (low)
(1)
2 — — μs -40°C to +85°C
SY11 T
PWRT Power-up Timer Period
(1)
—2
4
8
16
32
64
128
— ms -40°C to +85°C
User programmable
SY12 T
POR Power-on Reset Delay
(3)
31030μs -40°C to +85°C
SY13 T
IOZ I/O High-Impedance from
MCLR Low or Watchdog
Timer Reset
(1)
0.68 0.72 1.2 μs—
SY20 TWDT1 Watchdog Timer Time-out
Period
(1)
— — — ms See Section 21.4 “Watchdog
Timer (WDT)” and LPRC
parameter F21a (Table 24-21).
SY30 TOST Oscillator Start-up Time — 1024
TOSC
——TOSC = OSC1 period
SY35 T
FSCM Fail-Safe Clock Monitor
Delay
(1)
— 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.
3: These parameters are characterized by similarity, but are not tested in manufacturing.