PIC18F2480 MICROCHIP [Microchip Technology], PIC18F2480 Datasheet - Page 439

• Manufacturer Part Number: PIC18F2480
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 27-7:
FIGURE 27-8:
TABLE 27-10: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
 2004 Microchip Technology Inc.
30
31
32
33
34
35
36
37
38
39
Legend: TBD = To Be Determined
Param.
No.
Reference Voltage
Internal Reference
Watchdog
Note:
Time-out
Time-out
Enable Internal
I/O pins
Internal
Internal
Voltage Stable
PWRT
MCLR
Reset
Reset
Timer
T
T
T
T
T
T
T
T
T
T
POR
OSC
V
OST
CSD
WDT
IVRST
IOBST
Sym
MC
PWRT
IOZ
BOR
LVD
DD
L
V
Refer to Figure 27-4 for load conditions.
IRVST
V
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
High/Low-Voltage Detect Pulse
Width
CPU Start-up Time
Time for INTOSC to stabilize
DD
AND BROWN-OUT RESET REQUIREMENTS
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
BROWN-OUT RESET TIMING
33
Characteristic
32
PIC18F2480/2580/4480/4580
36
Preliminary
BV
DD
1024 T
Min
200
200
—
—
—
—
—
2
5
OSC
34
4.00
65.5
Typ
20
30
—
—
—
—
—
2
1
35
1024 T
Max
TBD
TBD
50
10
—
—
—
—
—
OSC
31
Units
ms
ms
ms
—
s
s
s
s
s
s
T
V
V
OSC
DD
DD
DS39637A-page 437
34
= OSC1 period
Conditions
B
V
VDD
LVD
V
BGAP
(see D005)
= 1.2V