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©2017 Integrated Device Technology, Inc.
June 5, 2017
Introduction
This document provides information on various methods for programming an EEPROM so that the desired settings will be loaded into the
8T49N24x (8T49N240i, 8T49N241i, or 8T49N242i) device registers at boot-up.
Overview
The 8T49N24x devices have an option to load their settings from OTP, EEPROM, or both (with EEPROM overriding OTP). The EEPROM
can easily make changes to the settings that will persist between device power-ups. This guide shows how to program the EEPROM
using the 8T49N240i, 8T49N241i, or 8T49N242i Evaluation Board; however, the principles apply to designs in general.
Items needed:
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IDT8T49N240i, IDT8T49N241i, or IDT8T49N242i Evaluation Board with AT24C04 EEPROM installed
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1 regular USB cable
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Timing Commander™ v1.5.3.1 or later installed on a PC
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8T49N24x Timing Commander™ Personality v0.8 or later
If using a Dash-Code or existing configuration file:
1. Copy the configuration file to the Desktop.
Do not load the original directly from Timing Commander
.
2. Open the file through the initial pop-up window, or by clicking on the part number in the top-left corner of the screen if a previous settings
file was being used (see the following figures).
If writing a new configuration:
1. Create a new settings file through the initial pop-up window, or by clicking on the part number in the top-left corner of the screen if a
previous settings file was being used (see the following figures).
2. Provide all necessary input/output settings that are required.
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Application Note
8T49N24x EEPROM Programming Guide
