35-BIT LED DISPLAY DRIVER
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FEATURES
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CMOS technology
Continuous brightness control
Serial data input
No LOAD signal required
Optional external data enable and reset
Wide power supply operation (3.5V to 12V)
34 or 35 outputs, 20mA sink capability
Alphanumeric capability
Part No: 80-08-00003
Type: PS045M
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APPLICATIONS
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Products with alphanumeric LED displays such as digital clock, counter,
radio, multimeter, etc.
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Industrial control indicator or instrumentation readout
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Relay driver
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GENERAL DESCRIPTIONS
The PS045M is designed to drive either 4 or 5-digit, common anode alphanumeric
LED displays with the added benefit of requiring minimal interface with the
display or data source. Data is transferred serially via 2 signals: clock and
serial data. Data transfer without the added inconvenience of external LOAD
and RESET signal is accomplished by using a format of a leading "1" followed
by the allowed 35 data bits. Display brightness is determined by control of
the output current for LED displays. Typically, the output current is 36 times
greater that current flowing into the B.C. terminal.
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DIE SIZE AND PAD ASSIGNMENT
4 4
1
2
3
4
5
6
2 9
4 3
4 2
4 1
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
1 : O U T 3
2 : O U T 2
3 : O U T 1
4 : R E S E T
5 : B . C .
6 : V D D
1 0 : O U T 3 5
1 1
1 2
1 3
1 4
: O U
: O U
: O U
: O U
T 3 4
T 3 3
T 3 2
T 3 1
1 9 : O U T 2 7
2 0 : O U T 2 6
2 1 : O U T 2 5
2 2 : O U T 2 4
2 3 : O U T 2 3
2 4 : O U T 2 2
2 5 : O U T 2 1
2 6 : O U T 2 0
2 7 : O U T 1 9
2 8 : O U T 1 8
2 9 : V S S
3 0 : O U T 1 7
3 1 : O U T 1 6
3 2 : O U T 1 5
3 3 : O U T 1 4
3 4 : O U T 1 3
3 5 : O U T 1 2
3 6 : O U T 1 1
3 7 : O U T 1 0
3 8 : O U T 9
3 9 : O U T 8
4 0 : O U T 7
4 1 : V S S
4 2 : O U T 6
4 3 : O U T 5
4 4 : O U T 4
1 5 : O U T 3 0
2610um
7
7 : C L K
1 6 : V S S
8 : D A T A I N 1 7 : O U T 2 9
9 : E N B
1 8 : O U T 2 8
P A D N A M E
V D D
V S S
R E S E T
B . C .
C L K
D A T A I N
E N B
O U T n
2 8
8
2 7
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 6
2 5
2 4
2 3
D E S C R I P T I O N
S u p p l y v o l t a g e
S y s t e m g r o u n d
T o r e s e t a l l t h e
i n t e r n a l
r e g i s t e r s
B r i g h t n e s s - c o n t r o l c u r r e n t i n p u t
C l o c k i n p u t t o t r a n s f e r s e r i a l d a t a
S e r i a l d a t a i n p u t
T o e n a b l e o r d i s a b l e s e r i a l d a t a i n p u t
C o n s t a n t s i n k i n g c u r r e n t o u t p u t
2770um
OPTO TECH
Since 1983
Microelectronics Business Division
2003.03
1/1
OPTO TECH CORPORATION
Tel: 886-3-5638951
Fax: 886-3-5783696
http://www.opto.com.tw
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