Texas Instruments MSP430F2132IRHBT

Overview

MSP430F2132IRHBT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 8 KB Flash, 512 B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C), and up to 24 GPIO pins - deployed in portable sensor nodes, battery-powered metering, and low-duty-cycle data loggers.

For engineers reviewing the MSP430F2132IRHBT datasheet, MSP430F2132IRHBT pinout, MSP430F2132IRHBT application, or MSP430F2132IRHBT equivalent, key selection criteria include active-mode current at 1 MHz (250 µA), standby current (0.7 µA), off-mode RAM retention (0.1 µA), 16-bit timer architecture, and QFN-32 package compatibility with embedded debugging via Spy-Bi-Wire.

Technical Context

The MSP430F2132IRHBT implements a digitally controlled oscillator (DCO) calibrated to ±1% across four frequencies up to 16 MHz, enabling sub-1-µs wake-up from LPM4. Its clock system delivers ACLK (from 32-kHz crystal or internal LF oscillator), SMCLK (DCO-derived), and MCLK (CPU clock), all software-selectable per low-power mode.

Peripherals are memory-mapped and accessible via full 16-bit instruction set; the USCI modules support simultaneous UART (with LIN auto-baud detection) and I2C communication, while the ADC10 integrates sample-and-hold, autoscan, and data transfer controller (DTC) for autonomous conversion sequences without CPU intervention.

Key Specifications

Pinout & Package

Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS). Pinout validated per TI SLAS578J Rev J (2012) Table 2 and Device Pinout diagram.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2132IRHBT, the F2131 offers lower memory capacity but identical ultra-low-power performance and peripheral set, while the F2330 adds DMA and larger RAM at the cost of higher active current - making the MSP430F2132IRHBT optimal for balanced cost, power, and feature requirements in long-life embedded sensing.

Availability

MSP430F2132IRHBT is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor networks, portable medical devices, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MSP430F2132IRHBT 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 leadership in ultra-low-power microcontrollers.

The MSP430F2132IRHBT belongs to the MSP430F2xx ultra-low-power MCU family, designed specifically for battery-operated measurement and sensing applications where nanowatt-level standby current and fast wake-up are critical.

FAQ

What is the maximum operating frequency of the MSP430F2132IRHBT?

The MSP430F2132IRHBT supports an internal digitally controlled oscillator (DCO) calibrated to four frequencies up to 16 MHz, with ±1% accuracy at 2.2–3.6 V and 30°C. External crystals up to 16 MHz may also be used via the HF oscillator path. The CPU executes instructions at 62.5-ns cycle time at 16 MHz, and the MSP430F2132IRHBT maintains full peripheral functionality across this range.

Does the MSP430F2132IRHBT support hardware UART with automatic baud-rate detection?

Yes, the MSP430F2132IRHBT's USCI_A0 module implements enhanced UART with LIN-compliant auto-baudrate detection. It samples incoming start bits to determine bit period and dynamically configures the baud rate generator - enabling robust communication in automotive and industrial networks where master node speed may vary. This feature is fully integrated in the MSP430F2132IRHBT silicon and requires no external components.

How many I/O pins does the MSP430F2132IRHBT provide, and what are their capabilities?

The MSP430F2132IRHBT provides 24 individually configurable GPIO pins across Ports P1 (8 pins), P2 (8 pins), and P3 (8 pins). Each pin supports input/output direction control, programmable pullup/pulldown resistors, edge-selectable interrupts (on P1 and P2), and peripheral function multiplexing - including timer capture/compare, ADC inputs, USCI signals, and comparator interfaces. All I/O operate across the full 1.8–3.6 V supply range.

Can the MSP430F2132IRHBT perform ADC conversions without CPU involvement?

Yes, the MSP430F2132IRHBT integrates a Data Transfer Controller (DTC) tightly coupled with the ADC10 module. When enabled, the DTC automatically stores conversion results into user-defined RAM locations after each sample - supporting up to 16 consecutive conversions across multiple channels in autoscan mode. This allows the CPU to remain in LPM3 or deeper sleep states during acquisition, reducing system power consumption significantly. The MSP430F2132IRHBT's DTC is configured entirely in hardware and requires no CPU cycles per transfer.

What debug interface does the MSP430F2132IRHBT use, and is external hardware required?

The MSP430F2132IRHBT uses the 2-wire Spy-Bi-Wire (SBW) interface, accessed via dedicated pins RST/NMI/SBWTDIO (Pin 5) and TEST/SBWTCK (Pin 29). No external level-shifting or adapter is required - standard TI debug tools like MSP-FET430UIF connect directly. SBW supports full-speed emulation, flash programming, real-time register inspection, and breakpoint debugging. The MSP430F2132IRHBT's SBW implementation is built into silicon and does not consume any GPIO or peripheral resources during normal operation.