Texas Instruments MSP430F1612IRTDT

Overview

MSP430F1612IRTDT from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 55KB+256B flash memory, 5KB RAM, dual 12-bit DACs, a 12-bit ADC with internal reference and autoscan, two 16-bit timers (Timer_A3 and Timer_B7), three-channel DMA, and dual USARTs supporting UART/SPI/I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F1612IRTDT datasheet, MSP430F1612IRTDT pinout, MSP430F1612IRTDT application, or MSP430F1612IRTDT equivalent, key selection criteria include its 55KB flash capacity, 5KB RAM with extended addressing, 64-pin QFN (RTD) package, Timer_B7 with seven capture/compare registers, and dual USART support including I²C on USART0 - critical for embedded control and data acquisition systems requiring low active current (330 μA at 1 MHz) and sub-6-μs wake-up.

Technical Context

The MSP430F1612IRTDT implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its architecture integrates dedicated peripherals including a hardware multiplier (MPY/MPYS/MAC/MACS) and a digitally controlled oscillator (DCO) that enables wake-up from LPM4 in under 6 μs.

It supports five software-selectable low-power modes (LPM0–LPM4), with RAM retention in Off mode at 0.2 μA. The device includes two independent serial interfaces: USART0 (UART/SPI/I²C) and USART1 (UART/SPI only), plus analog subsystems comprising a 12-bit ADC with sample-and-hold and dual voltage-output 12-bit DACs synchronized via DMA triggers.

Key Specifications

Pinout & Package

Package: 64-pin QFN (RTD), 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F1611IRTDT, the MSP430F1612IRTDT trades 7KB flash for 5KB RAM - optimizing for memory-intensive signal processing rather than large firmware; versus MSP430F169IPM, it delivers superior RAM architecture and smaller QFN footprint at the cost of 5KB flash and different package thermal characteristics.

Availability

MSP430F1612IRTDT is available at Aetrix Electronics and suitable for industrial sensor nodes, portable energy meters, medical handheld diagnostics, and smart building controllers requiring stable component supply across long-lifecycle programs.

Supply support for MSP430F1612IRTDT 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430F161x product line was designed for ultralow-power mixed-signal applications demanding high analog integration, deterministic real-time response, and extended battery life - especially in portable instrumentation and sensor-edge devices.

FAQ

What is the maximum operating frequency of the MSP430F1612IRTDT?

The MSP430F1612IRTDT does not specify a maximum clock frequency in its datasheet; instead, it guarantees correct operation up to 1 MHz in active mode at 2.2 V (330 μA typical). Its digitally controlled oscillator (DCO) supports frequencies beyond 1 MHz, but timing-critical peripherals like the 12-bit ADC require careful configuration to maintain specification compliance - design validation must confirm stability at target DCO settings.

Does the MSP430F1612IRTDT support I²C communication?

Yes, the MSP430F1612IRTDT supports I²C communication exclusively on USART0, using pins P3.1 (SDA) and P3.3 (SCL). USART1 does not support I²C mode. The I²C implementation complies with standard-mode (100 kbps) specifications and includes dedicated interrupt flags (I2CIFG) and control bits in the USCI module registers.

How much RAM is accessible in the MSP430F1612IRTDT, and how is it organized?

The MSP430F1612IRTDT provides 5KB of total RAM: 3KB extended RAM (024FFh–01900h), 2KB mirrored RAM (018FFh–01100h), and 2KB conventional RAM (09FFh–0200h). This architecture allows flexible allocation - e.g., placing stack in mirrored RAM for fast access while reserving extended RAM for large buffers - all within a single contiguous address space managed by the CPU.

Can the MSP430F1612IRTDT be programmed in-circuit without a JTAG emulator?

Yes, the MSP430F1612IRTDT supports in-circuit programming via its built-in bootstrap loader (BSL), accessible through UART using pins P1.1 (TX) and P2.2 (RX). The BSL requires a user-defined password for security and enables firmware updates in the field without physical access to JTAG pins - ideal for sealed or remote deployments where JTAG is inaccessible.

What is the purpose of the P5.7/TBOUTH/SVSOUT pin on the MSP430F1612IRTDT?

The P5.7 pin on the MSP430F1612IRTDT serves dual functions: as TBOUTH (Timer_B output high-impedance control) to simultaneously place all Timer_B PWM outputs in high-Z state, and as SVSOUT (supply voltage supervisor output) indicating SVS trip condition. This pin enables safe shutdown of external drivers during brownout events and coordinated PWM disable during fault conditions - critical for motor control and power conversion safety.