ml9289 Oki Semiconductor, ml9289 Datasheet - Page 6

• Manufacturer Part Number: ml9289
• Description: Vacuum Fluorescent Display Tube Controller Driver
• Manufacturer: Oki Semiconductor

PIN DESCRIPTION
28–38,
40–44
26, 27
18, 25
17,39
1–16
QFP
20
24
23
22
21
19
-
Pin
12,13,
31-41,
TQFP
24,48
43-47
29,30
20,28
19,42
14-18
1-11,
22
27
26
25
23
21
COM1–16
SEG1–16
Symbol
AD1–2
RESET
OSC0
V
GND
N.C
V
DA
CP
CS
DISP
DD
Type
I/O
—
O
O
O
I
I
I
-
l
Open
VFD tube anode
VFD tube anode
Microcontroller
Microcontroller
Microcontroller
Microcontroller
VFD tube grid
Power supply
Connects to
electrode
electrode
electrode
C
1
, R
1
VFD tube anode electrode drive output.
Directly connected to the VFD tube and no pull-down
resistor is required. I
VFD tube grid electrode drive output.
Directly connected to the VFD tube and no pull-down
resistor is required. I
VFD tube anode electrode drive output.
Directly connected to the VFD tube and no pull-down
resistor is required. I
The voltage supply between V
power supply for the internal logic.
The voltage supply between V
power supply for driving the VFD tube.
Apply power to V
Serial data input pin.
Data is input from the LSB.
Shift clock input pin.
Serial data is shifted in on a rising edge of CP when CS
pin is “L” level.
Chip select input pin.
Serial data transfer is enabled when CS pin is “L” 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 V
The target oscillation frequency is 2MHz.
No-Connection pin.
OSC0
C
1
DD
R
first, then to V
1
OH
OH
OH
Description
> –6 mA
> –30 mA
> –15 mA
(RC oscillator circuit)
*Refer
Circuit.
DD
DISP
and GND is for the
DISP
and GND is for the
DD
to
.
voltage used.
FEDL9289-01
ML9289-xx
the
Application
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