Texas Instruments MSP430F2232IDAR

Overview

MSP430F2232IDAR from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 8KB flash, 512B RAM, 10-bit 200-ksps ADC with internal reference and autoscan, dual 16-bit timers (Timer_A3 and Timer_B3), USCI_A0/USCI_B0 serial interfaces (UART/LIN/IrDA/SPI/I²C), and 32 I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor acquisition and portable measurement systems.

For engineers reviewing the MSP430F2232IDAR datasheet, MSP430F2232IDAR pinout, MSP430F2232IDAR application, or MSP430F2232IDAR equivalent, key selection criteria include its 38-pin TSSOP (DA) package, -40°C to 85°C industrial temperature grade, integrated brownout detector, sub-1-µs wake-up from standby mode, and absence of on-chip operational amplifiers (distinguishing it from the F22x4 series).

Technical Context

The MSP430F2232IDAR implements a 16-bit CPU with constant generators and seven addressing modes, enabling high code efficiency in ultra-low-power embedded control. Its basic clock system supports internal DCO (calibrated to ±1% at 1 MHz, 8 MHz, 12 MHz, 16 MHz), 32-kHz crystal (ACLK), HF crystal/resonator up to 16 MHz, and external digital clock sources.

It features five software-selectable low-power modes (LPM0–LPM4), with active-mode current of 270 µA at 1 MHz/2.2 V and standby-mode current of 0.7 µA. The device includes an Embedded Emulation Module (EEM) for Spy-Bi-Wire debugging and supports serial onboard programming without external voltage.

Key Specifications

Pinout & Package

Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), suffix DA, body size 9.7 mm × 4.4 mm, pitch 0.65 mm. Pin-compatible with other MSP430F22x2 devices in DA package.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2252IDAR, the MSP430F2232IDAR offers optimal cost/performance balance for fixed-function sensor nodes; compared with MSP430G2553IPW28, it provides higher I/O count, full USCI dual-interface support, and expanded ADC channel count - critical for multi-sensor fusion applications.

Availability

MSP430F2232IDAR is available at Aetrix Electronics and suitable for smart utility metering, portable environmental sensing, industrial predictive maintenance, and low-power wireless sensor transmitter applications requiring stable component supply across multi-year production cycles.

Supply support for MSP430F2232IDAR 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 specializing in analog, embedded processing, and connectivity technologies with decades of microcontroller innovation.

The MSP430F2232IDAR belongs to the MSP430F2xx ultra-low-power MCU family, designed specifically for battery-operated measurement systems where energy efficiency, precision analog integration, and long-term reliability are paramount.

FAQ

What is the maximum operating frequency of the MSP430F2232IDAR?

The MSP430F2232IDAR supports a maximum system clock (MCLK) frequency of 16 MHz, achievable using the internal digitally controlled oscillator (DCO) calibrated to ±1% or an external HF crystal/resonator. Its 16-bit RISC CPU executes instructions at 62.5-ns cycle time, enabling deterministic real-time control at this rate. The MSP430F2232IDAR does not require external clock circuitry for full-speed operation due to factory-trimmed DCO frequencies.

Does the MSP430F2232IDAR include operational amplifiers?

No, the MSP430F2232IDAR does not include operational amplifiers. Operational amplifiers are exclusive to the MSP430F22x4 series (e.g., MSP430F2274). The MSP430F2232IDAR is part of the F22x2 family and omits the two configurable op-amps present in F22x4 variants - confirmed by the device designation "x2" and absence of OA-related pin functions in its DA-package pinout table.

What debug interface does the MSP430F2232IDAR support?

The MSP430F2232IDAR supports the Spy-Bi-Wire (SBW) debug interface using the RST/NMI/SBWTDIO and TEST/SBWTCK pins. This two-wire interface enables full-speed programming, breakpoint debugging, and real-time variable inspection via TI's MSP-FET430UIF or compatible tools. It replaces traditional 4-wire JTAG, reducing PCB footprint and connector cost while maintaining full emulation capability for the MSP430F2232IDAR.

Can the MSP430F2232IDAR drive an LCD directly?

No, the MSP430F2232IDAR does not include an integrated LCD controller or segment drivers. Unlike later MSP430 generations (e.g., FR69xx or MSP430i2xx), the F22x2 series lacks LCD peripheral hardware. Driving an LCD requires external driver ICs or GPIO-based static/dynamic multiplexing - a design constraint explicitly documented in the SLAS504G datasheet functional block diagram and peripheral list for the MSP430F2232IDAR.

What is the purpose of the P2.5/ROSC pin on the MSP430F2232IDAR?

The P2.5/ROSC pin on the MSP430F2232IDAR serves as the resistor input for the internal digitally controlled oscillator (DCO), allowing frequency tuning via an external resistor. When used with the DCO, it sets the DCO's base frequency; when paired with a crystal, it functions as the crystal oscillator input terminal. This dual-role pin enables flexible clock source selection without additional external components, a key enabler of the MSP430F2232IDAR's low-BOM-count system design.