Texas Instruments MSP430F147IPMR

Overview

MSP430F147IPMR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 32KB flash, 1KB RAM, a 12-bit ADC with 8 channels and internal reference, dual 16-bit timers (Timer_A3 and Timer_B7), two USARTs (UART/SPI), and 48 GPIO pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable measurement devices requiring sub-6 µs wake-up from standby mode.

For engineers reviewing the MSP430F147IPMR datasheet, MSP430F147IPMR pinout, MSP430F147IPMR application, or MSP430F147IPMR equivalent, key selection considerations include its 32KB/1KB memory configuration, dual USART support, 12-bit ADC timing (<10 µs conversion), LQFP-64 package compatibility, and ultra-low active current (280 µA @ 1 MHz, 2.2 V).

Technical Context

The MSP430F147IPMR implements a 16-bit CPU with constant generators and hardware multiplier for optimized code efficiency in low-power embedded control. Its five power-saving modes-including Off mode with 0.1 µA RAM retention-are architecturally integrated with fast wake-up (<6 µs from LPM3) and digitally controlled oscillator (DCO) calibration.

Peripherals are tightly coupled to the bus architecture: the 12-bit ADC supports autoscan across 8 analog inputs (P6.0–P6.7), Timer_B7 provides seven capture/compare registers with shadow registers for glitch-free PWM, and both USART0 and USART1 support full-duplex UART and synchronous SPI operation with independent clocking.

Key Specifications

Pinout & Package

LQFP-64 package (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430F149IPMR and MSP430F148IPMR, the MSP430F147IPMR offers optimal memory sizing for fixed-function sensor nodes-reducing cost and power vs. over-provisioned variants while retaining full peripheral compatibility and identical LQFP-64 footprint.

Availability

MSP430F147IPMR is available at Aetrix Electronics and suitable for smart utility metering, portable gas detection, wireless sensor nodes, and industrial panel controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MSP430F147IPMR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with decades of expertise in ultra-low-power microcontrollers and precision analog signal chains.

The MSP430F147IPMR belongs to the MSP430F14x mixed-signal MCU family, designed specifically for battery-operated measurement and control applications where extended runtime, high analog integration, and deterministic real-time performance are essential.

FAQ

What is the maximum operating frequency of the MSP430F147IPMR?

The MSP430F147IPMR does not have a fixed maximum clock frequency specification; instead, it uses a digitally controlled oscillator (DCO) calibrated to deliver up to 8 MHz under typical conditions. The 125-ns instruction cycle time corresponds to a 8-MHz CPU clock, and the device supports SMCLK frequencies up to 8 MHz for peripherals like the ADC and timers. Performance remains stable across the full 1.8–3.6 V supply range.

Does the MSP430F147IPMR support hardware UART and SPI simultaneously?

Yes, the MSP430F147IPMR integrates two independent USART modules (USART0 and USART1), each configurable as either asynchronous UART or synchronous SPI. This allows true concurrent operation-for example, USART0 as UART for debug logging while USART1 operates as SPI to drive an external display or sensor. Pin assignments are fully documented in the signal descriptions table for LQFP-64.

What ADC reference options are available on the MSP430F147IPMR?

The MSP430F147IPMR ADC supports three reference sources: internal 1.5 V or 2.5 V (software-selectable), external voltage applied to VeREF+ (Pin 10), or AVCC (Pin 64). The internal 2.5 V reference has ±1.5% accuracy over temperature and is commonly used for sensor measurements where absolute precision is secondary to stability and simplicity. External references enable higher accuracy when required.

Is the MSP430F147IPMR pin-compatible with other MSP430F14x devices?

Yes, the MSP430F147IPMR in the LQFP-64 (PM) package shares identical pinout and electrical characteristics with MSP430F148IPMR and MSP430F149IPMR. All three devices use the same 64-pin mapping, including identical placement of power, ground, JTAG, ADC inputs (P6.0–P6.7), and peripheral function pins. This enables drop-in replacement during design iteration or volume production scaling.

How is code protection implemented on the MSP430F147IPMR?

The MSP430F147IPMR implements code protection via a one-time-programmable security fuse accessible through the JTAG interface. When blown, the fuse prevents readout of flash contents and disables JTAG access to memory, while still permitting full debug functionality (breakpoints, stepping) if enabled before fuse programming. The fuse is irreversible and requires dedicated TI tools (e.g., MSP-FET) for secure provisioning in production environments.