EDE700 Datasheet, PDF (1/10 Pages) List of Unclassifed Manufacturers – LCD Interface IC

EDE700 Serial LCD Interface IC
0=2400,1=9600 1
0=Inverted,1=Standard 2
0=Diagnostic Mode 3
Connect to +5V DC 4
Digital Ground 5
LCD Enable Line 6
LCD RS Line 7
LCD RW Line 8
No Connection 9
EDE700
BAUD
XMIT
POLARITY
RCV
TEST
OSC1
+5V
OSC2
GND
+5V
Enable
D7
RS
D6
RW
D5
N/C
D4
18 Serial Transmit
17 Serial Receive
16 Oscillator Connection
15 Oscillator Connection
14 Connect to +5V DC
13 LCD Data Pin 7
12 LCD Data Pin 6
11 LCD Data Pin 5
10 LCD Data Pin 4
The EDE700 Serial LCD Interface IC is designed to conveniently control text-based LCD modules via
a simple two or three wire link. This IC allows both engineer and hobbyist alike to easily
incorporate a LCD module into their design using a minimal amount of I/O lines. The EDE700
allows full LCD control, including the creation of custom characters. Also, in addition to the usual
sideways-scrolling feature standard on most LCD modules, the EDE700 is also capable of shifting text
from the bottom row of a 2-row LCD to the top row using only one command. 2400 or 9600 Baud
rates and selectable serial data polarity allow the EDE700 to communicate easily with most serial
devices. Connection to most microcontrollers, stamps, or microprocessors can be made using a
single data wire, without any type of voltage level conversion. Connection to a PC can be made
using only a 33KΩ resistor.
Some of the special features of the EDE700 are as follows:
• RS232 and TTL-level compatible
• Single-chip design allows for easy system integration
• Compatible with most 1x8 to 2x40 character HD44780 controlled LCDs
• Useable with LCDs having either 1x14 or 2x7 connector configuration
• Allows direct control of all LCD functions
• Adds new "Row Shift-up" capability
• Selectable data polarity eliminates necessity of RS-232 voltage converter
• Data Read Mode allows screen data to be read back to host system
• 2400/9600 Baud data rates
• Special Diagnostic Mode tests screen hookup and data transmission
• Available in 18 pin DIP or SOIC packages
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