PS045 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – 35-BIT LED DISPLAY DRIVER

35-BIT LED DISPLAY DRIVER
■ FEATURES
— 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
■ APPLICATIONS
— Products with alphanumeric LED displays such as digital clock, counter,
radio, multimeter, etc.
— Industrial control indicator or instrumentation readout
— Relay driver
■ 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.
■ DIE SIZE AND PAD ASSIGNMENT
44 43 42 41 40 39 38 37 36 35
1
2
3
4
5
6
2610um ₇
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22
2770um
1 :OUT3 10:OUT35 19:OUT27 28:OUT18 37:OUT10
2 :OUT2 11:OUT34 20:OUT26 29:VSS
38:OUT9
34
3 :OUT1 12:OUT33 21:OUT25 30:OUT17 39:OUT8
33
4 :RESET 13:OUT32 22:OUT24 31:OUT16 40:OUT7
32
5 :B.C. 14:OUT31 23:OUT23 32:OUT15 41:VSS
31
6 :VDD
15:OUT30 24:OUT22 33:OUT14 42:OUT6
30
7 :CLK
16:VSS
25:OUT21 34:OUT13 43:OUT5
8 :DATA IN 17:OUT29 26:OUT20 35:OUT12 44:OUT4
29
9 :ENB
18:OUT28 27:OUT19 36:OUT11
28
PAD NAME
DESCRIPTION
27
VDD
Supply voltage
26
VSS
System ground
25
RESET To reset all the internal registers
B.C.
Brightness-control current input
24
CLK
Clock input to transfer serial data
23
DATA IN Serial data input
ENB
To enable or disable serial data input
OUTn
Constant sinking current output
OPTO TECH
Since 1983
Microelectronics Business Division 2003.03
1/1
OPTO TECH CORPORATION
Tel: [phone]
Fax: [phone]
http://www.opto.com.tw