PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 360

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2331/2431/4331/4431
FIGURE 25-7:
FIGURE 25-8:
TABLE 25-8:
DS39616B-page 358
30
31
32
33
34
35
36
37
Param.
Internal Reference Voltage Stable
Enable Internal Reference Voltage
No.
Watchdog
Time-out
Time-out
Note:
I/O Pins
Internal
Internal
PWRT
MCLR
Reset
Reset
Timer
POR
OSC
V
V
Symbol
TmcL
T
T
T
T
T
T
T
V
DD
OST
WDT
IVRST
IRVST
PWRT
IOZ
BOR
LVD
DD
Refer to Figure 25-4 for load conditions.
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET REQUIREMENTS
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(No Postscaler)
Oscillation Start-up Timer Period
Power-up Timer Period
I/O Hi-impedance from MCLR Low
or Watchdog Timer Reset
Brown-out Reset Pulse Width
Time for Internal Reference
Voltage to become stable
Low-Voltage Detect Pulse Width
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
BROWN-OUT RESET TIMING
33
Characteristic
32
36
BV
Preliminary
DD
1024 T
Min
200
200
—
—
—
—
2
OSC
34
30
4.00
65.5
Typ
20
—
—
—
—
2
35
1024 T
Max
TBD
TBD
50
—
—
—
—
OSC
31
Units
 2003 Microchip Technology Inc.
ms
ms
—
s
s
s
s
s
T
V
V
OSC
DD
DD
34
= OSC1 period
Conditions
B
V
VDD
LVD
V
BGAP
(see D005)
= 1.2V