Texas Instruments MSPM0L1346TDGS28R

Overview

MSPM0L1346TDGS28R from Texas Instruments is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller operating up to 32 MHz, featuring 64 KB flash, 4 KB SRAM, a 12-bit 1.68-Msps ADC with 9 external channels, two zero-drift chopper op-amps, and integrated temperature sensing - deployed in battery-powered smart metering and portable medical sensor nodes.

For engineers reviewing the MSPM0L1346TDGS28R datasheet, MSPM0L1346TDGS28R pinout, MSPM0L1346TDGS28R application, or MSPM0L1346TDGS28R equivalent, key selection criteria include its 28-pin VSSOP package, –40°C to 105°C temperature grade (T), 1.62–3.6 V supply range, STANDBY mode current of 1.0 µA with timer retention, and analog-peripheral configurability for sensor signal conditioning.

Technical Context

The MSPM0L1346TDGS28R implements a single-core Arm Cortex-M0+ CPU with tightly coupled peripherals including a 3-channel DMA, event fabric, and four 16-bit timers supporting 8 PWM outputs. Its analog subsystem integrates ADC, COMP0 with 8-bit reference DAC, GPAMP, and two chopper OPAs with programmable gain (1–32×) and sub-µV/°C drift.

Low-power operation is enforced via five distinct modes: RUN (71 µA/MHz), STOP (44 µA at 32 kHz), STANDBY (1.0 µA with 32-kHz timer active and 3.2 µs wakeup), SHUTDOWN (61 nA with IO wakeup), and configurable clock sources including ±1.2% SYSOSC and ±3% LFOSC - all accessible without external crystals.

Key Specifications

Pinout & Package

28-pin VSSOP (DGS) package with exposed pad not present; 0.65 mm pitch; body size 7.1 mm × 4.9 mm; RoHS-compliant; rated for 260°C reflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSPM0L1306TDGS28R and MSPM0L1345TDGS28R, the MSPM0L1346TDGS28R delivers optimal balance of flash capacity, ADC channel count, and industrial temperature rating in the 28-pin VSSOP form factor - making it ideal for next-generation sensor nodes where firmware complexity and analog channel density coexist.

Availability

MSPM0L1346TDGS28R is available at Aetrix Electronics and suitable for battery charging, smart metering, and portable medical device applications requiring stable component supply across extended product lifecycles.

Supply support for MSPM0L1346TDGS28R 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSPM0L134x series is part of TI's ultra-low-power MCU portfolio designed specifically for cost-sensitive, battery-operated measurement and control applications demanding high analog integration and robust low-power operation.

FAQ

What is the maximum ADC sampling rate supported by the MSPM0L1346TDGS28R?

The MSPM0L1346TDGS28R features a 12-bit ADC capable of 1.68 million samples per second (Msps). This rate is achievable in single-channel mode with minimal overhead; throughput scales with channel count and configuration. The ADC supports hardware oversampling and configurable resolution down to 8 bits for higher speed trade-offs. All timing specifications are validated across the full –40°C to 105°C operating range.

Does the MSPM0L1346TDGS28R support crystal-less operation?

Yes, the MSPM0L1346TDGS28R supports fully crystal-less operation using its internal 4–32 MHz SYSOSC with ±1.2% accuracy and 32-kHz LFOSC with ±3% accuracy. These oscillators eliminate external crystal components while maintaining timing integrity for UART, I²C, and PWM generation - critical for space-constrained and cost-sensitive designs.

How many analog input channels does the MSPM0L1346TDGS28R provide?

The MSPM0L1346TDGS28R provides 9 external analog input channels (A0–A9), as confirmed in the Device Comparison table and Pin Attributes documentation. While the family datasheet references "up to 10" channels, the MSPM0L1346 variant is explicitly specified for 9 channels in Table 5-1 and functional block diagrams - matching its 28-pin VSSOP pin count and analog mux configuration.

What debug interface does the MSPM0L1346TDGS28R use?

The MSPM0L1346TDGS28R uses a 2-pin Serial Wire Debug (SWD) interface via dedicated SWCLK and SWDIO pins (PA20 and PA19). This interface supports full JTAG-equivalent functionality including breakpoints, watchpoints, and real-time memory access - with minimal PCB footprint and no additional protocol translation hardware required.

Is the MSPM0L1346TDGS28R qualified for automotive applications?

The MSPM0L1346TDGS28R carries a T-grade qualification (–40°C to 105°C), which meets under-hood and cabin ambient requirements for many automotive subsystems. However, it is not AEC-Q100 qualified. For safety-critical or engine-control applications, TI recommends verifying compliance with specific OEM requirements and considering AEC-Q100-certified alternatives such as the MSPM0G series.