Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

5/1/08

Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com

3

www.purdyelectronics.com

Displays

Environmental Absolute Maximum Ratings

Item

Normal Temperature

Wide Temperature

Operating

Storage

Operating

Storage

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Ambient Temperature

0 ºC

+50 ºC

-20 ºC

+70 ºC

-20 ºC

+70 ºC

-30 ºC

+80 ºC

Humidity (without

condensation)

See Note 2, 4

See note 3, 5

See Note 4, 5

See Note 4.6

Note 2: Ta ≤ 50ºC: 80% RH max; Ta > 50ºC: Absolute humidity must be lower than the humidity of 85% RH at 50ºC

Note 3: Ta at -20ºC will be < 48 hrs at 70ºC will be <120 hrs when humidity is higher than 75%.

Note 4: Background color changes slightly depending on ambient temperature. This phenomenon is reversible.

Note 5: Ta ≤ 70ºC: 75% RH max; Ta > 70ºC: absolutely humidity must be lower than the humidity of 75% RH at 70ºC.

Note 6: Ta at -30ºC will be < 48 hrs, at 80ºC will be < 120 hrs when humidity is higher than 75%.

Optical Characteristics

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Viewing angle range

φ f (12 o’clock)

When Cr

≥ 1.4

–20

–

degree

φ b (6 o’clock)

–40

–

φ l (9 o’clock)

–30

–

φ r (3 o’clock)

–30

–

Rise time

Tr

Ta=25ºC

175

ms

Fall time

Tf

170

ms

Frame frequency

Frm

–

64

–

Hz

Contrast

Cr

–

4.5

–

Brightness of Backlight

L

IF = 180 mA

10

20

–

Peak Emission

Wavelength

λ P

567

570

576

nm

Interface Pin Assignment

Pin No.

Pin Out

Level

Description

Pin No.

Pin Out

Level

Description

1

VSS

0V

Power Supply Ground

11

DB4

H/L

Data Bus Line

2

VDD

5V

Logic Supply Voltage

12

DB5

H/L

Data Bus Line

3

VO

–

Contrast Adjustment Voltage

13

DB6

H/L

Data Bus Line

4

/RD

L

Read Signal

14

DB7

H/L

Data Bus Line

5

/WR

L

Write Signal

15

/CS

L

Chip Signal

6

AO

H/L

Data Type Select

16

/RST

L

Reset Signal

7

DB0

H/L

Data Bus Line

17

–

Power Supply Voltage for LCD

8

DB1

H/L

Data Bus Line

18

FG

–

For GND

9

DB2

H/L

Data Bus Line

19

A

4.2V

LED Power External (Red)

10

DB3

H/L

Data Bus Line

20

K

GND

LED Ground External (White)

AND3222MST-LEDW