Texas Instruments MSPM0L1105TRHBR

Overview

MSPM0L1105TRHBR from Texas Instruments is an ultra-low-power 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 integrated GPAMP and temperature sensor - deployed in battery-powered smart metering and portable medical devices.

For engineers reviewing the MSPM0L1105TRHBR datasheet, MSPM0L1105TRHBR pinout, MSPM0L1105TRHBR application, or MSPM0L1105TRHBR equivalent, key selection criteria include its 1.62–3.6 V supply range, –40°C to 105°C extended temperature rating, STANDBY mode consuming only 1.0 µA with full SRAM retention, and 32-pin VQFN (RHB) package with 28 GPIOs including two 5-V tolerant open-drain I/Os.

Technical Context

The MSPM0L1105TRHBR implements a single-core Arm Cortex-M0+ CPU with on-chip SYSOSC (±1.2% accuracy, 4–32 MHz) and LFOSC (±3%, 32 kHz), enabling crystal-free operation. Its power management unit supports four low-power modes - RUN (71 µA/MHz), STOP (44 µA @ 32 kHz), STANDBY (1.0 µA with 32-kHz timer active), and SHUTDOWN (61 nA with IO wakeup).

Digital peripherals include a 3-channel DMA, four 16-bit general-purpose timers (8 PWM channels total), windowed watchdog timer, and event fabric for inter-peripheral signaling. Analog subsystem integrates one configurable 1.4-V/2.5-V internal VREF, GPAMP with differential inputs, and temperature sensor - all accessible via dedicated ADC input pins and IOMUX-controlled routing.

Key Specifications

Pinout & Package

Package: 32-pin VQFN (RHB), 5 mm × 5 mm, exposed thermal pad (recommended connection to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSPM0L1106TRHBR, the MSPM0L1105TRHBR trades flash capacity for cost-sensitive designs where firmware fits within 32KB; versus STM32G031K8T6, it delivers superior analog integration and lower active power but at lower clock speed - making it optimal for battery-constrained sensing nodes rather than compute-heavy edge processing.

Availability

MSPM0L1105TRHBR is available at Aetrix Electronics and suitable for battery charging and management, smart metering, and personal electronics requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MSPM0L1105TRHBR 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 company specializing in analog, embedded processing, and connectivity technologies with leadership in low-power MCU innovation.

The MSPM0L1105TRHBR belongs to the MSPM0 L-Series ultra-low-power MCUs, designed specifically for cost-sensitive, battery-operated measurement and control applications demanding high analog integration and extended temperature resilience.

FAQ

What is the maximum operating frequency of the MSPM0L1105TRHBR?

The MSPM0L1105TRHBR features an Arm Cortex-M0+ CPU with a maximum operating frequency of 32 MHz. This speed is supported with zero wait states up to 24 MHz and one wait state up to 32 MHz, as specified in the recommended operating conditions. The internal SYSOSC provides ±1.2% accuracy across temperature and voltage, eliminating need for external crystal while maintaining timing integrity for real-time control loops in the MSPM0L1105TRHBR.

Does the MSPM0L1105TRHBR support crystal-free operation?

Yes, the MSPM0L1105TRHBR supports fully crystal-free operation using its internal 4–32 MHz SYSOSC with ±1.2% accuracy and 32-kHz LFOSC with ±3% accuracy. These oscillators meet timing requirements for UART communication (including LIN and DALI), ADC sampling, and real-time clock functions without external components - reducing BOM cost and PCB area. Crystal-free design is validated across the full –40°C to 105°C temperature range for the MSPM0L1105TRHBR.

How many analog input channels does the MSPM0L1105TRHBR ADC support?

The MSPM0L1105TRHBR integrates a 12-bit, 1.68-Msps ADC supporting up to 10 external analog input channels (A0–A9). Pin mapping confirms A0 through A9 are assigned to dedicated GPIOs (e.g., PA27/A0, PA26/A1, ..., PA15/A9) across all package variants, including the 32-pin RHB. All channels support single-ended and differential acquisition modes using the configurable internal 1.4-V or 2.5-V VREF - a capability confirmed in the device comparison table and signal descriptions for the MSPM0L1105TRHBR.

What low-power modes are available on the MSPM0L1105TRHBR?

The MSPM0L1105TRHBR offers four distinct low-power modes: RUN (71 µA/MHz), STOP (44 µA at 32 kHz), STANDBY (1.0 µA with 32-kHz timer active and full SRAM/register retention), and SHUTDOWN (61 nA with IO wakeup capability). STANDBY mode enables 32-MHz wakeup in 3.2 µs - critical for responsive sensor polling. These modes are managed by the PMU and documented in Section 8.2 of the datasheet, confirming their availability and behavior for the MSPM0L1105TRHBR.

Is the MSPM0L1105TRHBR pin-compatible with other members of the MSPM0L110x family?

Yes, the MSPM0L1105TRHBR is pin-compatible with the MSPM0L1106TRHBR in the same 32-pin VQFN (RHB) package - sharing identical pinout, electrical characteristics, and peripheral mapping. Differences are limited to flash size (32KB vs. 64KB) and qualification grade (M vs. T), with no functional or timing impact on shared pins. This compatibility allows seamless migration within the same PCB layout when upgrading firmware complexity, as verified in the Device Comparison table and Pin Configuration section for the MSPM0L1105TRHBR.