Purdy AND671GST - Manual (Page 3)

Intelligent Character Display
AND671GST/GST-LED
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
3 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 5/26/08
Absolute Maximum Ratings
Item Symbol Condition
Standard Value
Unit Applicable Terminal
Min. Typ. Max.
Power Supply Voltage V
DD
4.5 5 5.5 V V
DD
Input “H” Level Voltage V
IH1
2.2 – V
DD
V
RS, R/W, E, DB
0
~ DB
7
Input “L” Level Voltage V
IL1
-0.3 – 0.6 V
Output “H” Level Voltage V
OH
I
OH
= 0.2.05 mA 2.4 – – V
DB
0
~ DB
Output “L” Level Voltage V
OL
I
OL
= 1.2 mA – – 0.4 V
Input Leekage Current V
LI
V
IN
= 0-V
DD
-1 – 1 µ A RS, R/W, E, DB
0
~ DB
7
Power Supply Current I
DD
V
DD
= 5V – – 3 mA V
DD
LCD Power Supply Voltage V
LCD
V
DD
- V
0
3 – – V V
0
AC Characteristics
Item Symbol Min. Max. Unit
Enable Cycle Time t
CVCE
500 – ns
Enable Pulse Width “High Level” p
WEH
230 – ns
Enable Rise/Fall Time t
ER
, t
Ef
– 20 ns
Address Set-up Time RS, R/W to E t
AS
40 – ns
Address Hold Time t
AH
10 – ns
Data Set-up Time t
DSW
80 – ns
Data Delay Time t
DDR
– 160 ns
Data Hold Time (Writing) t
H
10 – ns
Data Hold Time (Reading) t
DHR
5 – ns
Clock Oscillation Frequency f
OSC
270 (Typ.) KHz
Timing Characteristics