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TDA4VM21 Datasheet(PDF) 169 Page - Texas Instruments |
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TDA4VM21 Datasheet(HTML) 169 Page - Texas Instruments |
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169 / 331 page  6.7.1 Recommended Operating Conditions for OTP eFuse Programming over operating free-air temperature range (unless otherwise noted) PARAMETER DESCRIPTION MIN NOM MAX UNIT VDD_CORE Supply voltage range for the core domain during OTP operation; OPP NOM (BOOT) See Section 6.4 V VDD_MCU Supply voltage range for the core domain during OTP operation; OPP NOM (BOOT) See Section 6.4 V VPP_CORE Supply voltage range for the eFuse ROM domain during normal operation N/A(2) Supply voltage range for the eFuse ROM domain during OTP programming (1) 1.71 1.8 1.89 V VPP_MCU Supply voltage range for the eFuse ROM domain during normal operation N/A(2) Supply voltage range for the eFuse ROM domain during OTP programming (1) 1.71 1.8 1.89 V (1) Supply voltage range includes DC errors and peak-to-peak noise. TI power management solutions TLV70718 from the TLV707x family meet the supply voltage range needed for VPP_CORE and VPP_MCU. (2) N/A stands for Not Applicable. 6.7.2 Hardware Requirements The following hardware requirements must be met when programming keys in the OTP eFuses: • The VPP_CORE and VPP_MCU power supplies must be disabled when not programming OTP registers. • The VPP_CORE and VPP_MCU power supplies must be ramped up after the proper device power-up sequence (for more details, see Section 6.9.2). 6.7.3 Programming Sequence Programming sequence for OTP eFuses: • Power on the board per the power-up sequencing. No voltage should be applied on the VPP_CORE and VPP_MCU terminals during power up and normal operation. • Load the OTP write software required to program the eFuse (contact your local TI representative for the OTP software package). • Apply the voltage on the VPP_CORE and VPP_MCU terminals according to the specification in Section 6.7.1. • Run the software that programs the OTP registers. • After validating the content of the OTP registers, remove the voltage from the VPP_CORE and VPP_MCU terminals. 6.7.4 Impact to Your Hardware Warranty You recognize and accept at your own risk that your use of eFuse permanently alters the TI device. You acknowledge that eFuse can fail due to incorrect operating conditions or programming sequence. Such a failure may render the TI device inoperable and TI will be unable to confirm the TI device conformed to TI device specifications prior to the attempted eFuse. CONSEQUENTLY, TI WILL HAVE NO LIABILITY FOR ANY TI DEVICES THAT HAVE BEEN eFUSED. www.ti.com TDA4VM-Q1, TDA4VM SPRSP36K – SEPTEMBER 2021 – REVISED APRIL 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 169 Product Folder Links: TDA4VM-Q1 TDA4VM |
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