參數(shù)資料
型號(hào)： HT48R10A-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(gè)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(yè)數(shù)： 19/45頁(yè)
文件大?。?/td> 321K
代理商： HT48R10A-1
HT48R10A-1
19
November 29, 2000
The PC0 and PC1 are pin-shared with INT,
TMR and pins respectively.
In case of Internal RC+I/O system oscillator,
the PC3 and PC4 are pin-shared with OSC1
and OSC2 pins. Once the Internal RC+I/O
mode is selected, the PC3 and PC4 can be used
as general purpose I/O lines. Otherwise, the
pull-highresistorsandI/OfunctionsofPC3and
PC4 will be disabled.
It is recommended that unused or not bonded
out I/O lines should be set as output pins by
software instruction to avoid consuming power
under input floating state.
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
, such as changing
a battery, the LVR will automatically 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.
G
G
G
G
G
G
G
$ % $ /1 + . ' (
$ % $ /
H
H
* # , ' ( 0 $ # ' / 1 * .
$ % $ /
$ / $ & /* ( / ' + $
Low voltage reset
Note: *1:Tomakesurethatthesystemoscillatorhasstabilized,theSSTprovidesanextradelayof
1024 system clock pulses before entering the normal operation.
*2:Sincethelowvoltagehastomaintaininitsoriginalstateandexceed1ms,therefore1ms
delay enter the reset mode.
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PDF描述
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