70291E Datasheet, PDF (359/436 Pages) Microchip Technology – High-Performance, 16-bit Digital Signal Controllers

dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
TABLE 31-21: 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 ≤ TA ≤ +125°C for Extended
Param
No.
Symbol
Characteristic⁽¹⁾
Min Typ⁽²⁾ Max Units
Conditions
SY10 TMCL MCLR Pulse Width (low)
2
SY11 TPWRT Power-up Timer Period
—
SY12 TPOR Power-on Reset Delay
3
SY13 TIOZ
I/O High-Impedance from 0.68
MCLR Low or Watchdog
Timer Reset
SY20 TWDT1 Watchdog Timer Time-out —
Period
—
2
4
8
16
32
64
128
10
0.72
—
— μs
— ms
30 μs
1.2 μs
——
SY30 TOST Oscillator Start-up Time
— 1024 TOSC —
—
SY35 TFSCM Fail-Safe Clock Monitor
—
Delay
500
900 μs
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.
-40°C to +85°C
-40°C to +85°C
User programmable
-40°C to +85°C
—
See Section 28.4 “Watchdog
Timer (WDT)” and LPRC
specification F21 (Table 31-19)
TOSC = OSC1 period
-40°C to +85°C
© 2011 Microchip Technology Inc.
DS70291E-page 359