MSP430FR5729 Datasheet, PDF (50/115 Pages) Texas Instruments – MSP430FR572x Mixed-Signal Microcontrollers

MSP430FR5729, MSP430FR5728, MSP430FR5727, MSP430FR5726, MSP430FR5725
MSP430FR5724, MSP430FR5723, MSP430FR5722, MSP430FR5721, MSP430FR5720
SLASE35A – MAY 2014 – REVISED JUNE 2014
www.ti.com
6.7.2 Spy-Bi-Wire Interface
In addition to the standard JTAG interface, the MSP430 family supports the two-wire Spy-Bi-Wire
interface. Spy-Bi-Wire can be used to interface with MSP430 development tools and device programmers.
The Spy-Bi-Wire interface pin requirements are summarized in Table 6-5. For further details on interfacing
to development tools and device programmers, see the MSP430 Hardware Tools User's Guide
(SLAU278). For a complete description of the features of the JTAG interface and its implementation, see
MSP430 Programming Via the JTAG Interface (SLAU320).
Table 6-5. Spy-Bi-Wire Pin Requirements and Functions
DEVICE SIGNAL
TEST/SBWTCK
RST/NMI/SBWTDIO
VCC
VSS
DIRECTION
IN
IN, OUT
FUNCTION
Spy-Bi-Wire clock input
Spy-Bi-Wire data input and output
Power supply
Ground supply
6.8 FRAM
The FRAM can be programmed through the JTAG port, Spy-Bi-Wire (SBW), the BSL, or in-system by the
CPU. Features of the FRAM include:
• Low-power ultra-fast write nonvolatile memory
• Byte and word access capability
• Programmable and automated wait state generation
• Error Correction Coding (ECC) with single bit detection and correction, double bit detection
For important software design information regarding FRAM including but not limited to partitioning the
memory layout according to application-specific code, constant, and data space requirements, the use of
FRAM to optimize application energy consumption, and the use of the Memory Protection Unit (MPU) to
maximize application robustness by protecting the program code against unintended write accesses, see
the application report MSP430™ FRAM Technology – How To and Best Practices (SLAA628).
6.9 Memory Protection Unit (MPU)
The FRAM can be protected from inadvertent CPU execution or write access by the MPU. Features of the
MPU include:
• Main memory partitioning programmable up to three segments
• Each segment's (main and information memory) access rights can be individually selected
• Access violation flags with interrupt capability for easy servicing of access violations
6.10 Peripherals
Peripherals are connected to the CPU through data, address, and control buses and can be handled using
all instructions. For complete module descriptions, see the MSP430FR57xx Family User's Guide
(SLAU272).
6.10.1 Digital I/O
There are up to four 8-bit I/O ports implemented:
• All individual I/O bits are independently programmable.
• Any combination of input, output, and interrupt conditions is possible.
• Programmable pullup or pulldown on all ports.
• Edge-selectable interrupt and LPM3.5 and LPM4.5 wake-up input capability is available for all ports.
• Read and write access to port-control registers is supported by all instructions.
• Ports can be accessed byte-wise or word-wise in pairs.
50
Detailed Description
Copyright © 2014, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: MSP430FR5729 MSP430FR5728 MSP430FR5727 MSP430FR5726 MSP430FR5725
MSP430FR5724 MSP430FR5723 MSP430FR5722 MSP430FR5721 MSP430FR5720