1 Features
1• 1536 Bits of One-Time Programmable (OTP)
EPROM For Storage Of User-Programmable
Configuration Data
• Factory-Programmed Unique 64-Bit Identification
Number
• Single-Wire Interface to Reduce Circuit Board
Routing
• Synchronous Communication Reduces Host
Interrupt Overhead
• 6KV IEC 61000-4-2 ESD Compliance on Data Pin
• No Standby Power Required
• Available in a 3-Pin SOT-23 and TO-92 Packages

2 Applications
• Security Encoding
• Inventory Tracking
• Product-Revision Maintenance
• Battery-Pack Identification

3 Description
The bq2026 is a 1.5K-bit serial EPROM containing a
factory-programmed, unique 48-bit identification
number, 8-bit family code, and a 64-bit status register.
The bq2026 SDQ™ interface requires only a single
connection and a ground return. The SDQ pin is also the sole power source for the bq2026.
The small surface-mount package options saves
printed-circuit-board space, while the low cost makes it ideal for applications such as battery-pack
configuration parameters, record maintenance, asset
tracking, product-revision status, and access-code
security.