Browse Prior Art Database

PLUG-IN, SELF-FIXTURING MINIATURE IC CARRIER

IP.com Disclosure Number: IPCOM000005474D
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2001-Oct-08
Document File: 3 page(s) / 87K

Publishing Venue

Motorola

Related People

Thaddeus J. Zakrzewski: AUTHOR

Abstract

This carrier addresses a requirement for a simple means of changing IC's. One particularly suited application is in a synthesized radio which the transmit and receive frequencies are programmed via a PROM integrated circuit. To change the operating frequencies, it is necessary to only change the PROM. This carrier provides a protective PROM housing which can be easily removed and replaced from the outside of the radio and thereby, solves the user problem of needing a simple means to change the operating frequencies without having to replace the entire radio.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 3

@; MOTOROLA Technical Developments Volume 3 March 1983

PLUG-IN, SELF-FIXTURING MINIATURE IC CARRIER

By Thaddeus J. Zakrzewski

   This carrier addresses a requirement for a simple means of changing IC's. One particularly suited application is in a synthesized radio which the transmit and receive frequencies are programmed via a PROM integrated circuit. To change the operating frequencies, it is necessary to only change the PROM. This carrier provides a protective PROM housing which can be easily removed and replaced from the outside of the radio and thereby, solves the user problem of needing a simple means to change the operating frequencies without having to replace the entire radio.


a

   Figure 1 shows an exploded view of a miniature PROM carrier used to define transmit and receive frequencies for a synthesized FM two-way radio. This assembly successfully addresses the issues of security and resistance to physical damage of the electronic circuitry and interconnect system. The self-fixturing and snap-fit features allow for ease of assembly and inexpensive manufacturing without the use of additional hardware.

   The carrier includes a printed circuit (PC) board 10 with a PROM 12 and gold-plated contacts 14 for engaging a mating connector on the radio. A plastic front cover 16 securely holds the PC board. A pro- tective housing 18 is free to slide along the PC board and is urged away therefrom by springs 20. Hous- ing 18 covers and protects contacts 14 when the carrier is...