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参数资料
| 型号： | ML9204-XXGA |
| 厂商： | LAPIS SEMICONDUCTOR CO LTD |
| 元件分类： | 显示控制器 |
| 英文描述： | 24 X 35 DOTS FLUORESCENT DSPL CTRL, PQFP128 |
| 封装： | 14 X 20 MM, 0.50 MM PITCH, PLASTIC, QFP-128 |
| 文件页数： | 39/42页 |
| 文件大小： | 317K |
| 代理商： | ML9204-XXGA |
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PEDL9204-02
OKI Semiconductor
ML9204-xx
5/41
74 to 78
ROW1 to 5
O
Key matrix
Key matrix scan signal output pins.
Normally low level is output.
Key scanning starts by detecting depression or release
of key matrix switch and continues until selection of key
scan stop mode.
When key scan stop mode is selected, all outputs of
ROW1 to 5 return to low level.
91
RESET
l
Micro controller
Reset input.
“Low” initializes all the functions.
Initial status is as follows.
Address of each RAM .............. address “00”H
Data of each RAM ................... Content is undefined
Display digit............................. 24 digits
Brightness adjustment ............. 0/1024
All lights ON or OFF ................ OFF mode
ROW1 to 5 .............................. becomes low level
INT.......................................... becomes low level
72
OSC0
l
73
OSC1
O
Crystal or
ceramic
resonator
Pins for self-oscillation.
(Do not apply external clocks to these pins.)
Connect these pins to the crystal and capacitors or to
the ceramic resonator and capacitors.
The target oscillation frequency is 4.0MHz.
(The device has an internal feedback resister.)
VDD
Typical
3.3V
1Mohm
5.0V
0.4Mohm
* For information regarding the oscillator contact the
manufacturer of the oscillator.
* As regards the circuit, refer to the Application Circuit.
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