Datasheet

PIC24FJ16MC101/102 AND PIC24FJ32MC101/102/104
DS39997C-page 272 Preliminary © 2011-2012 Microchip Technology Inc.
FIGURE 26-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING CHARACTERISTICS
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
Reset
Watchdog
Timer
Reset
SY11
SY10
SY20
SY13
I/O Pins
SY13
Note: Refer to Figure 26-1 for load conditions.
FSCM
Delay
SY35
SY30
SY12
TABLE 26-21: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND 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
(1)
— 64 — ms -40°C to +85°C
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)
——1.2μs—
SY20 TWDT1 Watchdog Timer Time-out
Period
(1)
— — — ms See Section 23.4 “Watch-
dog Timer (WDT)” and
LPRC parameter F21a
(Table 26-19).
SY30 TOST Oscillator Start-up Time — 1024 *
T
OSC
——TOSC = OSC1 period
SY35 TFSCM 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, but are not tested in manufacturing.