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參數(shù)資料
| 型號： | LC573202A |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 4-Bit Microcontroller with 2K-Byte ROM, 64 】 4Bits RAM and LCD Driver |
| 中文描述： | 4位微控制器與2K字節(jié)的光盤，64】4Bits RAM和LCD驅(qū)動器 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大?。?/td> | 622K |
| 代理商： | LC573202A |
LC573202A
No.6726-8/18
Pin Name
Pad No.
Pin No.
33
I/O
Function description
Option
OSCIN
I
Input for 32.768kHz crystal oscillation
Input for RC oscillation
R is connected between OSCIN and OSCOUT and C is
connected between OSCIN and VSS.
Output for 32.768kHz crystal oscillation
Output for RC oscillation
R is connected between OSCIN and OSCOUT.
Reset
Test terminal
This terminal should be left unconnected.
Test terminal
This terminal should be left unconnected.
Test terminal
This terminal should be left unconnected.
Oscillation circuit
X’tal oscillation
/external RC oscillation
OSCOUT
34
O
Oscillation circuit
X’tal oscillation
/external RC oscillation
RES
TEST
32
35
I
-
T3
28
-
32Hz
29
-
* 9 kinds of modulated output : For 32.768kHz crystal oscillation, proportional to oscillation frequency.
Please refer to User’s manual for more detail.
(Note)
There are two operation modes, back-up mode (back up flag on) and normal mode (back up flag off), in Li battery
specification. In normal operation mode, the internal circuit of CPU is operated on 1/2 of Li battery voltage (it can
be monitored as external capacitor voltage of voltage step down circuit).
The power consumption can be saved in normal mode operation. However, the large current flown into/from the
buzzer output or output port will generate a voltage drop-down and it might be a cause of abnormal CPU operation.
If the microcontroller has to drive a large current, switch the CPU into the back up mode before driving the current.
CPU consumes the relatively large current in back up mode. When the Li battery voltage has recovered, you should
change the CPU into the normal mode.
CPU is in the back up mode at reset.
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