MSM9004-01 查看數據表（PDF） - Oki Electric Industry
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MSM9004-01
Oki Electric Industry
MSM9004-01 Datasheet PDF : 15 Pages
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¡ Semiconductor
MSM9004-01/02
PIN DESCRIPTIONS
Pin Symbol Type Connected to
Description
56 CLOCK1 *1 I
Micro-
controller
System clock input pin.
For details, see "MSM9004-02 Oscillation Circuit Characteristics".
56 OSC *2 I External
Pin for oscillation.
VDD
resistor
Connecting the external resistor and capacitor to
Capacitor
configure the oscillation circuit.
Connect the resistor and capacitor as shown in the OSC
right figure.
Make the length of wiring between this pin and the
VSS
external resistor and capacitor as short as passible.
52 DATA
I Micro-
Serial data input.
controller For details on the configuration of input data, see "Data Configuration".
51 CLOCK2
I Micro-
Shift clock input (Schmitt circuit included).
controller Input data is read synchronizing with the rising edge of this clock.
53 LOAD
I Micro-
Load signal input (Schmitt circuit included).
controller Serial input data is transferred to the display latch when this LOAD
50 BLANK
I
signal is at a "H" level.
Input pin for turning off all segments.
—
All segments turn off, regardless of the display data, when this pin is
at a "L" level, and all segments return to the status before turning off.
54 3/4SEL
I
Input pin for selecting 1/3 or 1/4 duty.
—
1/3 duty drive is selected when this pin is at a "H" level, and 1/4 duty
drive is selected when this pin is at a "L" level.
61 to 64 COM1-4
O LCD
LCD common outputs.
Leave COM4 open for 1/3 duty drive.
1 to 49 SEG1-49 O LCD
LCD segment outputs.
60 VLC1
59 VLC2
58 VLC3
Power
supply
Bias power supply pins for driving the LCD.
Conditions for bias voltage are as follows :
—
3.7V £ VDD – VLC3 £ 5.5V
1
VLC1 = VDD – 3 (VDD – VLC3)
2
VLC2 = VDD – 3 (VDD – VLC3)
VLC3 ≥ VSS
55 VDD
57 VSS
Power
Power supply pins.
supply
—
Normally used as VDD = 4.5 to 5.5 V and Vss = 0 V.
*1: Applied to MSM9004-01.
*2: Applied to MSM9004-02.
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