7 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

7.1 Application Information

A typical application consists of a microcontroller configured as the SDQ communication host device and the

TMF0008 being the SDQ responder device. The host and responder have open drain functionality for which an

external pull-up resistor (typically 500Ω) is required and connected to a pullup voltage in the range of 3.13V to

5.25V.

7.2 Typical Application

Avoid additional capacitances on the SDQ bus. Any capacitance greater than CCABLE can result in

communication failure. Do not add decoupling or bypass capacitors to the SDQ line.

BQF0008

RPUP = 500Ω

µC

VPUP

GND

ESD

Internal

Charge

Storage

SDQ

Power

Conditioning

MCLK

DIGITAL

FRAM

8kb

OTP

64-bit unique ID

Figure 7-1. Typical Application Circuit

7.2.1 Design Requirements

DESIGN PARAMETER

EXAMPLE VALUE

Pullup voltage

3.13V to 5.25V

Operating free-air temperature

–10

℃ to 85℃

Pullup resistor

500Ω

TMF0008

SLVSIV3 – JULY 2025

www.ti.com

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