Patent Number: 6,298,006

Title: Method and apparatus to automatically determine the size of an external EEPROM

Abstract: The present invention automatically determines the size of an EEPROM in a circuit. A controller is connected to the EEPROM with both a "data to" the EEPROM connection and a "data from" the EEPROM connection. The controller begins to send logical low address bits over the "data to" the EEPROM connection. After each address bit is transmitted, the controller increments the value of a counter. The controller continually monitors the data from the EEPROM connection to determine when the EEPROM has been successfully addressed. Once the EEPROM receives the appropriate number of address bits to fully address the first address location, the EEPROM drives the "data from" connection low. The controller then uses the value of the counter to determine the size of the EEPROM. The controller may either calculate the size of the EEPROM or use the value of the counter in a look-up table.

Inventors: Reohr, Jr.; Richard D. (Hillsboro, OR), Collins; Brian M. (Aloha, OR)

Assignee: Intel Corporation

International Classification: G11C 16/20 (20060101); G11C 16/06 (20060101); G11C 008/00 ()

Expiration Date: 10/02/2018