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參數(shù)資料
| 型號： | HT48R50A |
| 廠商： | Holtek Semiconductor Inc. |
| 元件分類： | 數(shù)學(xué)處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 23/46頁 |
| 文件大小： | 1037K |
| 代理商： | HT48R50A |
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HT48R50A-1
Rev. 1.10
23
July 2, 2001
The PG0 is pin-shared with INT.
In case of Internal RC+I/O system oscillator,
the and PG2 are pin-shared with OSC1 and
OSC2 pins. Once the Internal RC+I/O mode is
selected, the PG1 and PG2 can be used as gen-
eral purpose I/O lines. Otherwise, the pull-high
resistors and I/O functions of PG1 and PG2 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.
3 D 3
4 D 4
4 D
D 5
(
3 D 3
$ - $ .
/ - / .
- .
- .
-
7 / E * / * & 8
- .
* *
* &
& ! * ,
< : "
7 $ * & 8
' * ! * #!
/
7 / E * / * & 8
F
%
F /
F
%
F /
! * / # !
!* /
, # ! * ! #!
) # " * !
' * ! #!
, # ! * ! * #!
!* / # !
G / 0 * / * & E * * G / 0 * / * & E * * ! / * ' ! *#!
* ' * &
Input/output ports
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| HT48RA0A | 8-Bit Remote Type MCU |
| HT48RA3 | 8-Bit Remote Type OTP MCU |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT48R50A-1 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O Type 8-Bit MCU |
| HT48R50A-1_09 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O Type 8-Bit MCU |
| HT48R51 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Microcontroller Series |
| HT48R51-1(28SKDIP-H0) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| HT48R51-1(40DIP-A0) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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