Texas Instruments MSPM0L1105TDGS20R

Overview

MSPM0L1105TDGS20R from Texas Instruments is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller operating up to 32 MHz, featuring 32 KB flash, 4 KB SRAM, a 12-bit 1.68-Msps ADC with 10 external channels, and integrated GPAMP and temperature sensor. It targets battery-powered industrial sensing and power management systems requiring extended temperature operation (–40°C to 105°C) and wide supply range (1.62 V to 3.6 V).

For engineers reviewing the MSPM0L1105TDGS20R datasheet, MSPM0L1105TDGS20R pinout, MSPM0L1105TDGS20R application, or MSPM0L1105TDGS20R equivalent, key selection criteria include its 20-pin VSSOP (DGS) package, 17 GPIOs, dual UART support with LIN/Smart Card, I²C FM+, SPI at 16 Mbit/s, and sub-µA STANDBY/SHUTDOWN modes for energy-constrained designs.

Technical Context

The MSPM0L1105TDGS20R implements a single-core Arm Cortex-M0+ CPU with on-chip SYSOSC (±1.2% accuracy) and LFOSC (±3%), eliminating need for external crystals. Its peripheral bus architecture separates high-speed (MCLK) and ultra-low-power (ULPCLK) domains, enabling concurrent operation of timers, ADC, and communication interfaces in low-power states.

It integrates a 3-channel DMA controller, event fabric for cross-peripheral signaling, four 16-bit general-purpose timers (8 PWM channels), windowed watchdog, CRC-16/32 accelerator, and intelligent I/O with wake-from-SHUTDOWN capability on select pins - all optimized for deterministic real-time control in portable measurement and power delivery applications.

Key Specifications

Pinout & Package

Package: 20-pin VSSOP (DGS), body size 5.1 mm × 3 mm, exposed pad not present. Pin count and layout match TI's standardized DGS footprint for drop-in compatibility across MSPM0L110x variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSPM0L1106TDGS20R, the MSPM0L1105TDGS20R trades flash capacity for lower BOM cost while retaining identical low-power performance and analog features; versus STM32L011K4T6, it delivers higher ADC throughput, integrated amplifier, and industrial-grade thermal resilience at comparable price points.

Availability

MSPM0L1105TDGS20R is available at Aetrix Electronics and suitable for battery charging systems, smart power supplies, and building fire safety sensors requiring stable component supply across long-lifecycle industrial programs.

Supply support for MSPM0L1105TDGS20R 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 and embedded processing solutions, with deep expertise in low-power MCU architecture and industrial signal chain design.

The MSPM0L110x product line was engineered specifically for ultra-low-power, cost-optimized industrial sensing and power management applications - emphasizing analog integration, extended temperature resilience, and protocol-ready communication interfaces.

FAQ

What is the maximum ADC sampling rate supported by the MSPM0L1105TDGS20R?

The MSPM0L1105TDGS20R supports a maximum ADC sampling rate of 1.68 million samples per second (Msps) in its 12-bit mode. This specification is confirmed in the device's Functional Description and Electrical Characteristics sections. The MSPM0L1105TDGS20R achieves this performance using its dedicated ADC clock domain and internal voltage reference, enabling high-fidelity acquisition for power quality monitoring and battery impedance tracking applications.

Does the MSPM0L1105TDGS20R include an integrated operational amplifier?

Yes, the MSPM0L1105TDGS20R includes one general-purpose amplifier (GPAMP) with non-inverting (GPAMP_IN+) and inverting (GPAMP_IN−) inputs and an output (GPAMP_OUT). Pins PA26, PA22, and PA18 are assigned to these functions respectively in the 20-pin VSSOP package. This GPAMP supports rail-to-rail operation and is designed for sensor signal conditioning prior to ADC conversion, reducing external component count in current-sense and thermistor circuits.

What low-power modes are available on the MSPM0L1105TDGS20R and their typical current draw?

The MSPM0L1105TDGS20R offers four defined low-power modes: RUN (71 µA/MHz), STOP (151 µA at 4 MHz), STANDBY (1.0 µA with 32-kHz timer active), and SHUTDOWN (61 nA with IO wakeup). These values are measured under specified conditions in Section 7.5 of the datasheet. The MSPM0L1105TDGS20R maintains full SRAM/register retention and sub-4 µs wakeup time from STANDBY, making it suitable for duty-cycled sensor nodes.

Can the MSPM0L1105TDGS20R operate without an external crystal oscillator?

Yes, the MSPM0L1105TDGS20R operates without an external crystal oscillator. It integrates an internal 4–32 MHz SYSOSC with ±1.2% accuracy and a 32-kHz LFOSC with ±3% accuracy - both sufficient for UART baud rate generation, ADC timing, and real-time clock functions. The MSPM0L1105TDGS20R uses these oscillators exclusively in its default configuration, eliminating BOM cost and board space for external timing components.

How many GPIO pins does the MSPM0L1105TDGS20R provide in its 20-pin VSSOP package?

The MSPM0L1105TDGS20R provides 17 GPIO pins in its 20-pin VSSOP (DGS) package. This count excludes power (VDD, VSS, VCORE), reset (NRST), debug (SWCLK, SWDIO), and dedicated analog (VREF+, VREF−, ADC inputs) pins. All 17 GPIOs support digital I/O functionality, with two (PA0 and PA1) additionally rated as 5-V tolerant open-drain for I²C and LIN bus interfacing - confirmed in Table 6-1 and Section 6.2 of the datasheet.