Texas Instruments MSPM0L1105TDGS28R

Overview

MSPM0L1105TDGS28R from Texas Instruments is a 32-bit Arm® Cortex®-M0+ microcontroller operating at up to 32 MHz, featuring 32KB flash, 4KB SRAM, a 12-bit 1.68-Msps ADC with 10 external channels, and support for –40°C to 105°C operation. It targets ultra-low-power battery-powered systems such as smart metering and portable medical devices.

For engineers reviewing the MSPM0L1105TDGS28R datasheet, MSPM0L1105TDGS28R pinout, MSPM0L1105TDGS28R application, or MSPM0L1105TDGS28R equivalent, key selection considerations include its 28-pin VSSOP package, dual UART with LIN/Smart Card support, 1.62–3.6 V supply range, STANDBY mode consuming 1.0 µA with 32-kHz timer active, and integrated GPAMP and temperature sensor.

Technical Context

The MSPM0L1105TDGS28R implements an enhanced Arm Cortex-M0+ core with on-chip SYSOSC (±1.2% accuracy) eliminating external crystals, and supports four 16-bit timers with eight PWM channels-two timers retain full functionality in STANDBY mode. Its ADC includes configurable 1.4-V or 2.5-V internal VREF and supports simultaneous sampling across multiple channels via hardware event triggering.

Power management integrates RUN (71 µA/MHz), STOP (44 µA @ 32 kHz), STANDBY (1.0 µA with 32-kHz timer + SRAM retention), and SHUTDOWN (61 nA with IO wakeup) modes. Communication peripherals include two UARTs (one supporting LIN/IrDA/DALI/Manchester/Smart Card), one I²C (FM+, 1 Mbit/s), and one SPI (16 Mbit/s), all capable of waking from low-power states.

Key Specifications

Pinout & Package

Package: 28-pin VSSOP (DGS), body size 7.1 mm × 3 mm, exposed pad not present. Pinout optimized for compact PCB layout with dedicated analog inputs (A0–A9), debug (SWCLK/SWDIO), and dual UART/I²C/SPI interfaces sharing GPIOs via configurable pin mux.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSPM0L1106TDGS28R, the MSPM0L1105TDGS28R trades flash capacity for cost-sensitive designs, while versus STM32G031F8P6 it delivers superior analog integration and lower standby power-critical for battery longevity in metering and sensing.

Availability

MSPM0L1105TDGS28R is available at Aetrix Electronics and suitable for smart metering, battery-powered medical wearables, and industrial sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for MSPM0L1105TDGS28R 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 with deep expertise in low-power design and industrial-grade reliability.

The MSPM0L110x product line targets ultra-low-power, cost-optimized 32-bit microcontrollers for battery-operated and energy-harvesting applications-emphasizing analog integration, extended temperature operation, and simplified system design.

FAQ

What is the maximum ADC sampling rate supported by the MSPM0L1105TDGS28R?

The MSPM0L1105TDGS28R supports a maximum ADC sampling rate of 1.68 million samples per second (Msps) in single-channel mode. This performance is achieved using the internal 32-MHz system clock and optimized conversion pipeline. The MSPM0L1105TDGS28R ADC also supports hardware-triggered sequencing across up to 10 external channels, enabling synchronized multi-sensor acquisition critical for power quality monitoring and motor control feedback loops.

Does the MSPM0L1105TDGS28R support crystal-less operation?

Yes, the MSPM0L1105TDGS28R supports fully crystal-less operation using its internal 4–32 MHz SYSOSC with ±1.2% accuracy across temperature and voltage. This oscillator meets timing requirements for UART (including LIN and Smart Card), I²C, and SPI communication without external components. The MSPM0L1105TDGS28R also includes a 32-kHz LFOSC (±3%) for RTC and low-power timer functions, eliminating the need for external crystals in most battery-powered applications.

How many GPIOs are available on the MSPM0L1105TDGS28R in the 28-pin VSSOP package?

The MSPM0L1105TDGS28R in the 28-pin VSSOP (DGS) package provides 24 GPIOs. These include PA0 through PA27, excluding dedicated power (VDD, VSS, VCORE), reset (NRST), and debug (SWCLK, SWDIO) pins. Two of these-PA0 and PA1-are 5-V tolerant open-drain I/Os, enabling direct interface with 5-V logic or I²C buses. All GPIOs support configurable pull-up/pull-down resistors and wakeup capability from SHUTDOWN mode.

What low-power modes does the MSPM0L1105TDGS28R support, and what is the lowest current draw?

The MSPM0L1105TDGS28R supports RUN, STOP, STANDBY, and SHUTDOWN low-power modes. Its lowest active current draw is 1.0 µA in STANDBY mode with the 32-kHz timer running, full SRAM/register retention, and 32-MHz clock wakeup in 3.2 µs. In SHUTDOWN mode, current drops to 61 nA with IO wakeup capability-enabling decade-long battery life in infrequently activated sensor nodes. All modes maintain register context except SHUTDOWN, which retains only selected wakeup configuration bits.

Can the MSPM0L1105TDGS28R's GPAMP be used for sensor signal conditioning?

Yes, the MSPM0L1105TDGS28R's integrated general-purpose amplifier (GPAMP) is designed specifically for sensor signal conditioning. It features rail-to-rail input and output, programmable gain, and direct connection to ADC inputs (e.g., GPAMP_OUT → A4). Used with the on-chip temperature sensor or external thermistors/strain gauges, the GPAMP enables precision amplification before digitization-eliminating external op-amps in designs like battery fuel gauging or HVAC ambient sensing. The MSPM0L1105TDGS28R GPAMP specifications include input offset voltage <2 mV and GBW >1 MHz.