EEPROM

-ChargePump

DTOP

-SHA-1/HMAC

-SDQ

-CtrlandStatusRegisters

Power

Retification

ATOP

-Oscillator

-LDO

-POR

-OTP PowerComparator

VSS

OTP

PWR

SDQ

bq26100

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SLUS696B – JUNE 2006 – REVISED AUGUST 2015

7 Detailed Description

7.1 Overview

The bq26100 device is a small memory device for battery packs or accessories. The device contains a mix of

One Time Programmable (OTP) and multi-write EEPROM non-volatile memory with authentication functions that

can be used to validate the battery/accessory for usage in the host system. The memory consists of five 32-byte

pages of general use OTP non-volatile memory and a 16-byte page of EEPROM to be used at the host system

designer’s discretion. An external high voltage is required for programming the OTP, but is not necessary for

programming the EEPROM.

7.2 Functional Block Diagram

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Product Folder Links: bq26100