ML9209 データシートの表示（PDF） - LAPIS Semiconductor Co., Ltd.
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ML9209 Datasheet PDF : 29 Pages
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LAPIS Semiconductor
FEDL9209-01
ML9209-xx
PIN DESCRIPTION
Pin
Symbol
28–38,
SEG1–16
40–44
1–16 COM1–16
26, 27 AD1–2
18, 25
20
17,39
VDD
GND
VFL
24
DA
23
CP
22
CS
21
RESET
19
OSC0
Type
O
O
O
—
I
I
I
l
I/O
Connects to
Description
VFD tube
anode
electrode
VFD tube
grid
electrode
VFD tube
anode
electrode
Power supply
Microcontroller
Microcontroller
Microcontroller
Microcontroller
C1, R1
VFD tube anode electrode drive output.
Directly connected to the VFD tube and no pull-down resistor
is required. IOH > –6 mA
VFD tube grid electrode drive output.
Directly connected to the VFD tube and no pull-down resistor
is required. IOH > –30 mA
VFD tube anode electrode drive output.
Directly connected to the VFD tube and no pull-down resistor
is required. IOH > –15 mA
The voltage supply between VDD and GND is for the power
supply for the internal logic.
The voltage supply between VDD and VFL is for the power
supply for driving the VFD tube.
Apply power to VDD first, then to VFL.
Serial data input pin (positive logic).
Data is input from the LSB.
Shift clock input pin.
Serial data is shifted in on a rising edge of CP.
Chip select input pin.
Serial data transfer is disabled when CS pin is “H” level.
Reset input.
Setting this pin to “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...............................16 digits
• Brightness adjustment...............0/16
• All display lights ON or OFF......OFF mode
• All outputs .................................Low level
Pin for RC oscillation.
Resistors and capacitors are connected externally and
constants vary depending on the VDD voltage used.
The target oscillation frequency is 2MHz.
OSC0
C1
R1
(RC oscillator circuit)
*Refer to the Application
Circuit.
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