Texas Instruments MSP430F233TPMR

Overview

MSP430F233TPMR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 8KB+256B flash, 1KB RAM, a 12-bit ADC, two 16-bit timers (Timer_A with three capture/compare registers and Timer_B with three registers), one USCI module (supporting UART, SPI, I²C), on-chip comparator, and supply voltage supervisor - designed for battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F233TPMR datasheet, MSP430F233TPMR pinout, MSP430F233TPMR application, or MSP430F233TPMR equivalent, key selection criteria include its 64-pin QFP package, -40°C to 105°C operating range, 1.8–3.6 V supply, sub-1 µs wake-up time, and integrated analog peripherals enabling compact, low-quiescent-current measurement systems.

Technical Context

The MSP430F233TPMR implements a 16-bit CPU with constant generators and a calibrated DCO enabling operation up to 16 MHz without external crystal. Its basic clock system supports internal LF oscillator, 32-kHz crystal (XT1), and optional high-frequency XT2 oscillator - all configurable via software-controlled register settings.

It integrates a single USCI_A module supporting enhanced UART (with auto-baud detection), IrDA, and synchronous SPI, plus a comparator with multiple inputs and output routing to Timer_A. The ADC12 features internal reference, sample-and-hold, and autoscan across eight channels - all synchronized to the system clock domain.

Key Specifications

Pinout & Package

Package: 64-pin Plastic Quad Flat Package (QFP, PM), 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F235TPMR, the MSP430F233TPMR offers identical peripheral set and timing performance but less memory - ideal for optimized firmware; versus MSP430F2274IPW, it delivers higher-resolution ADC, full Timer_B, and 64-pin I/O flexibility at the cost of board area.

Availability

MSP430F233TPMR is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, and industrial control interfaces requiring stable component supply, long-term lifecycle assurance, and extended temperature grade support.

Supply support for MSP430F233TPMR 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 MSP430F233TPMR belongs to the MSP430F2xx ultra-low-power MCU family, engineered specifically for energy-constrained measurement and control applications where battery life, precision analog integration, and rapid wake-up response are critical.

FAQ

What is the maximum operating frequency of the MSP430F233TPMR?

The MSP430F233TPMR supports a maximum CPU clock frequency of 16 MHz, achievable using the internal digitally controlled oscillator (DCO) calibrated to ±1% across temperature and voltage. This allows deterministic real-time execution without requiring an external high-frequency crystal, reducing BOM cost and board space. The DCO is fully software-configurable and can be synchronized to external sources if needed.

Does the MSP430F233TPMR include hardware for UART communication?

Yes, the MSP430F233TPMR includes one USCI_A module that supports UART functionality with enhanced features including auto-baudrate detection and IrDA encoding/decoding. It uses pins P3.4 (UCA0TXD) and P3.5 (UCA0RXD) for transmit and receive. The module operates independently of the CPU during transfers, enabling low-CPU-overhead serial communication essential for sensor telemetry and debug interfaces in the MSP430F233TPMR.

How many analog input channels does the MSP430F233TPMR support?

The MSP430F233TPMR supports eight analog input channels (A0–A7) via its integrated 12-bit ADC12 module. These are mapped to port pins P6.0 through P6.7. The ADC supports single-ended and differential sampling, internal reference voltage generation, sample-and-hold, and autoscan mode - allowing continuous conversion across all channels without CPU intervention, a key capability for sensor array interfacing in the MSP430F233TPMR.

What debug interface does the MSP430F233TPMR use?

The MSP430F233TPMR uses the standard 4-wire JTAG interface (TCK, TMS, TDI, TDO) for debugging, emulation, and flash programming. Pins 57, 56, 55, and 54 provide full access to the Embedded Emulation Module (EEM). It is compatible with TI's MSP-FET430UIF debugger and third-party tools supporting MSP430 JTAG - enabling breakpoints, real-time variable watch, and non-intrusive code execution analysis directly on the MSP430F233TPMR.

Is the MSP430F233TPMR pin-compatible with other devices in the MSP430F2xx family?

The MSP430F233TPMR shares the same 64-pin QFP (PM) package and pinout with MSP430F235TPMR and selected MSP430F24x variants, but functional differences exist - notably the MSP430F233TPMR has only one USCI module and reduced Timer_B (three capture/compare registers vs. seven). While physical pin alignment matches, firmware and peripheral initialization must be validated per device; it is not a drop-in replacement for higher-memory or dual-USCI variants like MSP430F247TPMR.