參數(shù)資料
型號: HT48C10-1
廠商: Holtek Semiconductor Inc.
英文描述: 8-Bit High Performance RISC-like Microcontroller Suitable for Multiple I/O Application(高性能、指令類似RISC的8位微控制器,用于多I/O接口設(shè)備)
中文描述: 8位高性能RISC架構(gòu)微控制器等的多個I / O應(yīng)用(高性能,指令類似的RISC的8位微控制器,用于多予適用/輸出接口設(shè)備)
文件頁數(shù): 20/43頁
文件大?。?/td> 274K
代理商: HT48C10-1
HT48C10-1
20
January 4, 2001
Low voltage reset
LVR
The microcontroller provides low voltage reset
circuit in order to monitor the supply voltage of
the device. If the supply voltage of the device is
within the range 0.9V~V
LVR
(2.2V or 3.3V),
such as changing a battery, the LVR will auto-
matically reset the device internally.
The LVR includes the following specifications:
The low voltage (0.9V~V
LVR
) has to remain in
their original state to exceed 1ms. If the low
voltage state does not exceed 1ms, the LVR
will ignore it and do not perform a reset func-
tion.
The LVR uses the OR function with the ex-
ternal RES signal to perform chip reset.
The relationship between V
DD
and V
LVR
is
shown below.
Note: V
OPR
is the voltage range for proper chip
operation at 4MHz system clock.
E
E* #E
E* #E
E
E
E
E
$ % $ /1 + . ' (
$ % $ /
F
F
* # , ' ( 0 $ # ' / 1 * .
$ % $ /
$ / $ & /* ( / ' + $
Low voltage reset
Note: *1:Tomakesurethatthesystemoscillatorhasstabilized,theSSTprovidesanextradelayof
1024 system clock pulses before entering the normal operation.
*2: Since the low voltage has to maintain in its original state and exceed 1ms, therefore 1ms
delay enter the reset mode.
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