PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 330

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2220/2320/4220/4320
FIGURE 26-8:
FIGURE 26-9:
TABLE 26-10: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
DS39599C-page 328
Param.
30
31
32
33
34
35
36
37
No.
Reference Voltage
Internal Reference
Watchdog
Time-out
Time-out
Note:
I/O pins
Internal
Internal
Enable Internal
PWRT
Voltage Stable
MCLR
Reset
Reset
Timer
POR
OSC
T
T
T
T
TIOZ
T
T
T
V
Symbol
OST
WDT
IVRST
MC
PWRT
BOR
LVD
DD
L
V
Refer to Figure 26-5 for load conditions.
IRVST
V
DD
MCLR Pulse Width (low)
Watchdog Timer Time-out Period (no postscaler)
Oscillation Start-up Timer Period
Power-up Timer Period
I/O High-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
AND BROWN-OUT RESET REQUIREMENTS
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
BROWN-OUT RESET TIMING
33
Characteristic
32
36
BV
DD
1024 T
3.48
57.0
Min
200
200
34
—
—
2
OSC
30
4.00
65.5
Typ
20
35
—
—
—
—
2
1024 T
Max
4.71
77.2
50
—
—
—
—
OSC
31
 2003 Microchip Technology Inc.
Units
ms
ms
—
s
s
s
s
s
T
V
V
OSC
DD
DD
34
= OSC1 period
Conditions
B
V
V
VDD
LVD
BGAP
(see D005)
= 1.2V