PIC18F45K80-I Datasheet, PDF (566/622 Pages) Microchip Technology – 28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN and nanoWatt XLP Technology

PIC18F66K80 FAMILY
FIGURE 31-7:
BROWN-OUT RESET TIMING
VDD
BVDD
35
VIRVST
Enable Internal
Reference Voltage
Internal Reference
Voltage Stable
36
VBGAP = 1.2V
TABLE 31-11: 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
(no postscaler)
—
4
—
ms
32
TOST Oscillation Start-up Timer Period 1024 TOSC — 1024 TOSC — TOSC = OSC1 period
33
TPWRT Power-up Timer Period
—
1
—
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
TIVRST Time for Internal Reference
Voltage to become Stable
—
25
—
s
37
THLVD High/Low-Voltage Detect Pulse Width 200
—
—
s VDD  VHLVD
38
TCSD CPU Start-up Time
5
—
10
s
39
TIOBST Time for INTOSC to Stabilize
—
1
—
s
DS39977F-page 566
 2010-2012 Microchip Technology Inc.