MSP432P411VIPZ datasheet(124/212 Pages) TI1

124 / 212 page

SRAM Region

0x2000_0000

0x2004_0000

Reserved

0x2280_0000

SRAM

Bit-Band Alias

Region

Reserved

0x3FFF_FFFF

0x2200_0000

SRAM Region

0x0100_0000

0x0104_0000

Reserved

0x010F_FFFF

CODE Zone

SRAM Zone

124

MSP432P4111, MSP432P4011, MSP432P411Y

MSP432P401Y, MSP432P411V, MSP432P401V

SLASEA0A – DECEMBER 2017 – REVISED FEBRUARY 2018

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Product Folder Links: MSP432P4111 MSP432P4011 MSP432P411Y MSP432P401Y MSP432P411V MSP432P401V

Detailed Description

Figure 6-6. SRAM Map

6.4.2.1

SRAM Bank Enable Configuration

The application can optimize the power consumption of the SRAM. To enable this, the SRAM is divided

into 64-KB banks that can be individually powered down. Banks that are powered down remain powered

down in both active and low-power modes of operation, thereby limiting any unnecessary inrush current

when the device transitions between active and retention-based low-power modes. The application can

also disable one (or more) banks for a certain stage in the processing and enable it for another stage.

When a particular bank is disabled, reads to its address space return 0h, and writes are discarded. To

prevent holes in the memory map, if a particular bank is enabled, all the lower banks are also forced to

enabled. This ensures a contiguous memory map through the set of enabled banks instead of a allowing a

disabled bank to appear between enabled banks. For example:

•

If there are four banks in the device, the valid combinations of the BNKxx_EN fields in the

SYS_SRAM_BANKEN_CTL0 register are 0001, 0011, 0111, and 1111.

•

Other combination of BNKxx_EN fields like 1011 are not valid, and the resultant bank configuration is

automatically set to 1111.

Figure 6-7 shows valid and invalid combinations of the bank enable fields.

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