PIC18F242 MICROCHIP [Microchip Technology], PIC18F242 Datasheet - Page 276

• Manufacturer Part Number: PIC18F242
• Description: 28/40-pin High Performance, Enhanced FLASH Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX2
FIGURE 22-8:
TABLE 22-7:
DS39564C-page 274
30
31
32
33
34
35
36
37
Param.
Internal Reference Voltage stable
Enable Internal Reference Voltage
No.
V
V
TmcL
T
T
T
T
T
T
T
Symbol
IRVST
OST
DD
WDT
PWRT
IOZ
BOR
IVRST
LVD
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
BROWN-OUT RESET TIMING
Characteristic
36
BV
DD
1024 T
Min
200
200
28
—
—
2
7
OSC
Typ
—
18
—
72
—
20
—
2
35
1024 T
Max
132
500
33
—
—
—
—
OSC
© 2006 Microchip Technology Inc.
Units
ms
ms
—
s
s
s
s
s
T
V
D005)
V
D420)
OSC
DD
DD
Conditions
= OSC1 period
B
V
V
Typical
VDD
LVD
BGAP
(see
(see
= 1.2V