EDE300 Datasheet, PDF (1/9 Pages) List of Unclassifed Manufacturers – EDE300 Parallel/ Serial Transceiver IC

EDE300 Parallel/ Serial Transceiver IC
Data Direction, Output Latch 1
0=2400,1=9600 2
0=Local, 1=Host 3
Connect to +5V DC 4
Digital Ground 5
Data I/O Pin 0 6
Data I/O Pin 1 7
Data I/O Pin 2 8
Data I/O Pin 3 9
EDE300
Dir/Latch XMIT
BAUD
RCV
Mode
OSC1
+5V
OSC2
GND
+5V
D0
D7
D1
D6
D2
D5
D3
D4
18 Serial Transmit
17 Serial Receive
16 Oscillator Connection
15 Oscillator Connection
14 Connect to +5V DC
13 Data I/O Pin 7
12 Data I/O Pin 6
11 Data I/O Pin 5
10 Data I/O Pin 4
The EDE300 Parallel/ Serial Transceiver IC is a 5 volt, 18 pin package designed to
conveniently convert 8-bit parallel data into serial format and vice-versa. The EDE300 is ideal for
logging data to a PC, controlling hardware via the PC serial port, communicating 8-bit data via a
serial connection, and expanding I/O capabilities on microcontrollers and Stamps. The EDE300 is
BAUD-selectable, offering both 2400 and 9600 BAUD communication. PC connection requires the
use of a voltage level shifter such as the MAX233. The EDE300 can be configured as either a half-
duplex transmitter, a half-duplex receiver, or a half-duplex bi-directional transceiver.
PIN DEFINITIONS
Flow Control Pins:
Data Direction, /Latch (PIN 1):
Baud Rate (PIN 2):
Mode (PIN 3):
In Local Control Mode pin is an INPUT:
Input of 0 = Parallel to Serial, 1 = Serial to Parallel.
In Host Control Mode, pin is an OUTPUT:
EDE300 drives this pin low on receive, high on transmit
0 = 2400 BAUD, (N 8 1); 1 = 9600 BAUD, (N 8 1)
0 = Local Control Mode, 1 = Host Control Mode
Data Pins:
Serial Transmit (PIN 18) :
Serial Receive (PIN 17):
D0..D7 (PIN 6..PIN 13):
Serial data is output from the EDE300 via this pin
Serial data is input to the EDE300 via this pin
Data I/O Pins (DO is least significant bit)
COPYRIGHT © 1996 E-Lab Digital Engineering, Inc. All Rights Reserved. Page # 1