UCD3138128APFCR datasheet(21/83 Pages) TI1

21 / 83 page

UCD3138128A

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SLUSC99 – JULY 2016

Product Folder Links: UCD3138128A

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Overview (continued)

For run time data storage and scratchpad memory, a 8 kB RAM is available. The RAM is organized as a 2 k x 32

bit array.

The availability of 128 kB of program Flash memory in 4-32 kB banks, respectively enables the designers to

implement multiple images of firmware (e.g. one main image + one back-up image) in the device and the

flexibility to execute from either of the banks using appropriate algorithms. It also creates the unique opportunity

for the processor to load a new program and subsequently execute that program without interrupting power

delivery. This feature allows the end user to add new features to the power supply while eliminating any down-

time required to load the new program.

On the UCD3138128A, the boot ROM supports a dual image configuration where each image contains 64 kB. If

the first 64kB has an invalid program, the boot ROM will check for a valid program in the second 64kB and jump

there. The boot ROM also supports a configuration with a single program occupying the entire 128 kB.

For the UCD3138128A, on the fly updates are supported through boot ROM. Detailed procedures can be found

in SLUUB54

UCD3138128APFCR Folha de dados(PDF) 21 Page - Texas Instruments