FEDL9298-01
OKI Semiconductor
ML9298
PIN DESCRIPTION
Pin
DIM1
DIM2
A/C
ZA
HS
MS
BLANK
COLSEL
XT
XT
TEST
F64Hz
GR1
GR2
1a, 3a to 2b, 4b, 4c
V
CC
GND
VDDOUT
VDDIN
NC
I/O
I
I
I
I
I
I
I
I
I
O
I
O
O
O
O
I
Pull-up/
Pull-down
Pull-down
Pull-down
Pull-up
Pull-up
Pull-up
Pull-up
Pull-down
Pull-up
Description
Brightness switching pin.
Input pin with a pull-up resistor to reset the circuits inside this LSI
at a “L” level.
Set the reset pulse width to 2 ms or more.
Zero adjust pin.
Hour digit adjustment pin.
Minute digit adjustment pin.
Blank input pin. Display disappears at a “L” level.
This is the input pin for selecting flashing or lighting of the colon
output.
"L" level : Flashing, "H" level : Lighting
Crystal oscillation pin to connect a crystal and capacitors Cx and
Cy externally.
IC testing pin. Leave this pin open or fix it to a “H” level.
64Hz signal output pin for oscillation frequency adjustment.
Output pins for the 1/2 duty fluorescent display tube grids.
Output pins for the 1/2 duty fluorescent display tube anodes.
Power supply pin for high voltage.
Ground pin.
built-in regulator output pin for logic circuits. Connect the pin to
the VDDIN pin.
Power supply pin for logic circuits. Connect the pin to the
VDDOUT pin.
NC pin. Leave the pin open.
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OKI [ OKI ELECTRONIC COMPONETS ]
