SER7 Datasheet, PDF (1/11 Pages) ABCircuits – Serial to Seven Segment Controller Expandable to 32 digits

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SER7 IC
Serial to Seven Segment Controller
Expandable to 32 digits
General Description
The SER7 IC is a bridge between serial interfaces and one or two non multiplexed seven
segment displays. Data is received in a 32 byte buffer, and translated from ASCII to seven
segment codes when a carriage return (Hex 0D) is received. More than one SER7 chip may be
connected together to achieve up to 32 digits of display. The SER7 has internal pull resistors on
most inputs to minimize additional parts.
The SER7 may connect to RS-232, USB, RS-485, Ethernet or directly to your UART. The serial
format to the SER7 is standard ASCII asynchronous format, using 8 bits, 1 stop and no parity at
9600 BPS. Other formats and encoding are available, contact the factory. A .1 uF bypass
capacitor is suggested across the VDD and VSS pins. The part uses the standard 28 pin .3 inch
width SOIC and DIP package.
Features
• Drives one or two seven segment
displays from serial data.
• Converts from ASCII to seven
segment codes.
• Few external parts required.
• Low power consumption 3 mA
typical.
• Supply voltage 2.4 to 5.25 volts.
• All timing internally generated.
• On chip input resistors.
• Output polarity select.
• Right or left hand decimal point
displays.
• Right or left display justification.
• TTL and CMOS compatible.
• Part is in full production.
• SOIC and DIP 28 Pin Package.
• ROHS Compliant.
• Low EMI.
Applications
• Data Displays
• Vending Machines
• Large display control
• Numeric Displays
• Controls
• Ethernet displays
• Price signs
Part Number SER7
Copyright © 2014 ABCircuits. Revised September 2014 Page 1 of 11