PIC18F2331_10 Datasheet, PDF (350/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 26-8: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET REQUIREMENTS
Param.
No.
Symbol
Characteristic
Min Typ Max Units
Conditions
30
TMCL MCLR Pulse Width (low)
2
—
—
s
31
TWDT Watchdog Timer Time-out Period
—
4.00
—
ms
(no postscaler)
32
TOST Oscillation Start-up Timer Period 1024 TOSC — 1024 TOSC — TOSC = OSC1 period
33
TPWRT Power-up Timer Period
—
65.5
—
ms
34
TIOZ I/O High-impedance from MCLR
Low or Watchdog Timer Reset
—
2
—
s
35
TBOR Brown-out Reset Pulse Width
200
—
—
s VDD  BVDD (see D005)
36
TIRVST Time for Internal Reference
Voltage to become Stable
—
20
50
s
37
TLVD Low-Voltage Detect Pulse Width
200
—
—
s VDD  VLVD
38
TCSD CPU Start-up Time
—
10
—
s
39
TIOBST Time for INTOSC to Stabilize
—
1
—
ms
DS39616D-page 350
 2010 Microchip Technology Inc.