參數(shù)資料
型號(hào)： MCV18ET-I/SO
元件分類： 微控制器/微處理器
英文描述： FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO18
封裝： 7.50 MM, LEAD FREE, SOIC-18
文件頁(yè)數(shù)： 97/108頁(yè)
文件大?。?/td> 1509K
代理商： MCV18ET-I/SO
2009 Microchip Technology Inc.
DS41399A-page 89
MCV18E
FIGURE 10-5:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING(1)
FIGURE 10-6:
BROWN-OUT RESET TIMING
TABLE 10-4:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,
AND BROWN-OUT RESET REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
30
TMCL
MCLR Pulse Width (low)
2
—
μsVDD = 5V, -40°C to +85°C
31*
TWDT
Watchdog Timer Time-out Period
(No Prescaler)
718
33
ms
VDD = 5V, -40°C to +85°C
32
TOST
Oscillation Start-up Timer Period
—
1024 TOSC
——
TOSC = OSC1 period
33*
TPWRT
Power-up Timer Period
28
72
132
ms
VDD = 5V, -40°C to +85°C
34
TIOZ
I/O high-impedance from MCLR
Low or WDT Reset
——
2.1
μs
35
TBOR
Brown-out Reset Pulse Width
100
—
μsVDD ≤ BVDD (D005)
*
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.
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
Reset
Watchdog
Timer
Reset
33
32
30
31
34
I/O Pins
34
Note 1:
Refer to Figure 10-2 for load conditions.
VDD
BVDD
35
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