What is the minimum voltage for writing FRAM on MSP430FR6989?

Kellylee1980

Other Parts Discussed in Thread: MSP430FR6989

Is it possible to write the variables into FRAM correctly, when the MSP430FR6989 supply drop to 1.9V. I can't find out this voltage lowest limit in the datasheet.

Many thanks.

over 9 years ago

0 James Evans over 9 years ago

TI__Mastermind 49692 points

According to Footnote 4 below Section 5.3 Recommended Operation Conditions in the datasheet, the "minimum supply voltage is defined by the supervisor SVS levels". Table 5-2 (below) shows the exact values.

Depending on the Vsvsh- power-down level configuration, this defines the minimum supply voltage that causes the board to reset, as illustrated in Figure 2-2 in the User's Guide.

As you can see, the maximum value is 1.85V, so if your power supply is stable at 1.9V, then it should be possible to write to FRAM correctly.

Regards,

James

MSP Customer Applications

0 Kellylee1980 over 9 years ago in reply to James Evans

Intellectual 320 points

Hi James,

That is good news.

Thanks very much.

Kelly

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What is the minimum voltage for writing FRAM on MSP430FR6989?