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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： | 38/42页 |
| 文件大小： | 317K |
| 代理商： | ML9204-XXGA |
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PEDL9204-02
OKI Semiconductor
ML9204-xx
4/41
PIN DESCRIPTION
Pin
Symbol
Type
Connects to
Description
33 to 67
SEGA1 to A35
1 to 6
100 to
128
SEGB1 to B35
O
VFD tube anode
electrode
VFD tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH < –5 mA
8 to 31
COM1 to 24
O
VFD tube grid
electrode
VFD tube grid electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH < –25 mA
68
ADA
99
ADB
O
VFD tube anode
electrode
VFD tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH < –15 mA
96
VDD
71
L-GND
7,32
VCOM
69,98
VSEG
70,97
D-GND
—
Power supply
VDD-L-GND are power supplies for internal logic.
VCOM-D-GND are power supplies for driving VFD tube
grid.
VCOM-D-GND are power supplies for driving VFD tube
anode.
Use the same power supply for L-GND and D-GND.
94
DI/O
I/O
Micro controller
Serial data input-output (positive logic).
Data is input and output to sift register synchronized
with the rise of shift clock.
When Inputting data input from the LSB.
93
CP
l
Micro controller
Shift clock input.
Serial data is shifted on the rising edge of
CP.
92
CS
l
Micro controller
Chip select input.
Serial data transfer is disabled when
CS pin is “H” level.
95
INT
O
Micro controller
Output pin for interrupt signal to micro controller.
When depression or release of key matrix switch is
detected, key scanning starts and when 1 cycle is
completed, this pin becomes high level. Upon receiving
encoder type rotary switch input, this pin becomes high
level. The INT pin remains at high level until the key
scan stop mode is selected..
85,86
87,88
89,90
A1,B1
A2,B2
A3,B3
l
Rotary switch
Encoder type rotary switch input pins.
All inputs possess chattering absorption function of
256us period.
Those inputs must be tied to ground when they are
not used.
79 to 84
COL1 to 6
I
Key matrix
Input pins for return signal from key matrix with built-in
pull-up resister.
When input is low level, the key matrix switch is
regarded as being pressed.
Dose not have chattering absorption function.
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