AM652X datasheet(130/299 Pages) TI1

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130

AM6548, AM6528, AM6546

AM6526, AM6527

SPRSP08E – NOVEMBER 2017 – REVISED OCTOBER 2018

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Product Folder Links: AM6548 AM6528 AM6546 AM6526 AM6527

Specifications

Recommended Operating Conditions for OTP eFuse Programming (continued)

over operating free-air temperature range (unless otherwise noted)

PARAMETER

DESCRIPTION

MIN

NOM

MAX

UNIT

VPP_MCU

Supply voltage range for the eFuse ROM

domain during normal operation

N/A

Supply voltage range for the eFuse ROM

domain during OTP programming (1)

1.71

1.8

1.89

I(VPP_CORE)

TBD

I(VPP_MCU)

TBD

Temperature (ambient)

ºC

(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 in this table stands for Not Applicable.

5.8.1

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 5.11.2).

5.8.2

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

Table 5-11.

•

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.

5.8.3

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.

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