PD2437 datasheet(2/11 Pages) OSRAM

2 / 11 page

 2001 OSRAM Opto Semiconductors Inc.• San Jose, CA

PD2535/6/7, PD3535/6/7, PD4435/6/7

www.inﬁneon.com/opto • 408-456-4000

OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany

www.osram-os.com • +49-941-202-7178

July 5, 2001-14

DESCRIPTION

These Programmable Displays are four digit display sys-

tem modules. The characters are 0.20" by 0.14"

(PD243X), 0.27" by 0.20" (PD353X), and 0.45" by 0.27"

(PD443X) 5 x 7 dot matrix arrays constructed with the

latest solid state technology in light emitting diodes.

Driving and controlling the LED arrays is a silicon gate

CMOS integrated circuit. This integrated circuit provides

all necessary LED drivers and complete multiplexing

control logic.

Additionally, the IC has the necessary ROM to decode

128 ASCII alphanumeric characters and enough RAM to

store the display’s complete four digit ASCII message

with special attributes. These attributes, all software

programmable at the user’s discretion, include a lamp

test, brightness control, displaying cursors, alternating

cursors and characters, and ﬂashing cursors or charac-

ters.

The CMOS IC also incorporates special interface control

circuitry to allow the user to control the module as a fully

supported microprocessor peripheral. The module,

under internal or external clock control, has asynchro-

nous read, write, and memory clear over an eight bit par-

allel, TTL compatible, bi-directional data bus. Each

module is fully encapsulated within a package 1.0" x 0.7"

x 0.2" (PD253X), 1.4" x 0.72" x 0.285" (PD353X), and 1.5"

x 0.82" x 0.285" (PD443X). The standard 20 pin DIP con-

struction with two rows spaced at 0.6" on 0.1" centers is

wave solderable.

See the end of this data sheet or refer to Appnotes 18,

19, 22, and 23 for further details on handling and assem-

bling OSRAM Programmable Displays.

.700

(17.78)

Pin 1

location

.125

(3.18)

.200

(5.08)

PD243X

OSRAM

YYWW

Luminous

Intensity Code

EIA date code

.160

±.020

(4.06

±.51)

.600

(15.24)

.200

(5.08)

Pin 1

Indicator

.050

(1.27)

.100 typ. (2.54)

.018 x .012 typ.

(.46 x .31)

1.000 max.

(25.40)

.140

(3.56)

.070

±.004 typ.

(1.78

±.10)

.250

(6.35)

at seating plane

and centered

on package

Tolerance: .XXX=0.02 (.51)

at seating plane

and centered

on package

PD3537

OSRAM

YYWW

Luminous

Intensity

Code

.160

±.020

(4.06

±.51)

.600 typ.

(15.24)

.285

(7.24)

EIA date code

Pin 1 Identifier and ESD warning

.250

(6.35)

.100 (2.54) typ.

.018 x .012 typ.

(.46 x .31)

.720 max.

(18.29)

.175

(4.45)

1.400 max.

(35.56)

.350

(8.89)

typ.

.270 typ.

(6.86)

.200

(5.08)

typ.

.450

(11.43)

Part No.

Tolerance: .XXX=0.010 (.25)

unless max.

at seating plane

and centered

on package

PD4437

OSRAM

YYWW

Luminous

Intensity Code

.160

±.020

(4.06

±.51)

.600 typ.

(15.24)

.285

(7.24)

EIA date code

Pin 1 Indicator

.300

(7.62)

.100 (2.54) typ.

.018 x .012

±.002 typ.

(.46 x .31

±.05)

.820 max.

(20.83)

.050

(1.27)

1.500 max.

(38.1)

.375

(9.53)

typ.

.45

±.010

(11.43)

.270

(6.86)

typ.

.600

(15.24)

Part No.

Tolerance: .XXX=0.020 (.51)

Dimensions in Inches (mm)

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