MSP432P411VIPZ datasheet(148/212 Pages) TI1

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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

6.10.3 Bootloader (BSL)

The BSL enables users to program flash or SRAM on the device using a UART or I2C or SPI serial

interface. Access to the device memory through the BSL is protected by a user-defined password.

Table 6-56 lists the required BSL pins.

Table 6-56. BSL Pins and Functions

DEVICE PIN

BSL FUNCTION

P1.2

UART BSLRXD

P1.3

UART BSLTXD

P1.4

SPI BSLSTE

P1.5

SPI BSLCLK

P1.6

SPI BSLSIMO

P1.7

SPI BSLSOMI

P3.6

I2C BSLSDA

P3.7

I2C BSLSCL

The BSL is invoked under any of the following conditions:

•

Erasure of flash main memory

•

Hardware invocation of BSL

•

Software-based API calls to BSL functions

The user can perform hardware invocation of BSL using any pin of ports P1, P2, or P3. The pin selected

for this purpose must not be one of the pins used for BSL. The user can configure the device pin and its

polarity through the flash boot-override mailbox. The BSL can then be invoked on a power cycle or POR

reset event with the configured pin.

For the complete description of the BSL features and its implementation, see the MSP432P4xx

SimpleLink™ Microcontrollers Bootloader (BSL) User's Guide.

6.10.4 Device Security

The MSP432P4x1x MCUs offer the following two types of device security for the user application code

programmed on to the device.

•

JTAG and SWD lock

•

IP protection

JTAG and SWD lock as the name indicates locks the JTAG and SWD interface of the device. IP

protection is useful for protection of customer software IP, for example, in multiple-vendor development

scenarios. It is possible to have up to four IP protected zones with configurable start address and size.

The security configurations of the device are done using the flash boot-override mailbox.

Also the SYSCTL_A module provides infrastructure for encrypted in-field updates to the application code

on devices that are JTAG and SWD locked or have defined IP protection zones. For complete details of

the device security features, see SYSCTL_A chapter in the MSP432P4xx SimpleLink™ Microcontrollers

Technical Reference Manual.

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