參數(shù)資料
型號: 16F872
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE GREEN 10 FT
中文描述: 28引腳,8位閃存微控制器的CMOS
文件頁數(shù): 134/160頁
文件大小: 2600K
代理商: 16F872
PIC16F872
DS30221A-page 134
Preliminary
1999 Microchip Technology Inc.
FIGURE 14-6: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
FIGURE 14-7: BROWN-OUT RESET TIMING
TABLE 14-3:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,
AND BROWN-OUT RESET REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
30
31*
TmcL
Twdt
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(No Prescaler)
Oscillation Start-up Timer Period
Power up Timer Period
2
7
18
33
μ
s
ms
V
DD
= 5V, -40°C to +85°C
V
DD
= 5V, -40°C to +85°C
32
33*
Tost
Tpwrt
28
1024 T
OSC
72
132
ms
T
OSC
= OSC1 period
V
DD
= 5V, -40°C to +85°C
34
T
IOZ
I/O Hi-impedance from MCLR Low
or Watchdog Timer Reset
Brown-out Reset pulse width
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
2.1
μ
s
35
Legend:
T
BOR
100
μ
s
V
DD
V
BOR
(D005)
*
V
DD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
Reset
Watchdog
Timer
Reset
33
32
30
31
34
I/O Pins
34
Note:
Refer to Figure 14-3 for load conditions.
V
DD
V
BOR
35
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