Texas Instruments M0L1305QRHBRQ1

Overview

M0L1305QRHBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 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, two zero-drift chopper op-amps, and integrated temperature sensing - deployed in steering wheel systems and door handle modules.

For engineers reviewing the M0L1305QRHBRQ1 datasheet, M0L1305QRHBRQ1 pinout, M0L1305QRHBRQ1 application, or M0L1305QRHBRQ1 equivalent, key selection considerations include its 32-pin VQFN (RHB) package, ±1.2% internal oscillator accuracy, STANDBY mode consuming 1.0 µA with full SRAM retention, and support for LIN, I²C FM+, and low-power UART operation in automotive body electronics.

Technical Context

The M0L1305QRHBRQ1 integrates a 32-bit Arm Cortex-M0+ core with tightly coupled peripherals including a 3-channel DMA, event fabric signaling, and four 16-bit timers supporting 8 PWM outputs. Its analog subsystem features programmable gain (1–32×) on both chopper op-amps and a high-speed comparator with 32-ns propagation delay and integrated 8-bit reference DAC.

Power management includes five low-power modes: RUN (71 µA/MHz), STOP (151 µA @ 4 MHz), STANDBY (1.0 µA with 32-kHz timer active and 3.2-µs wakeup), and SHUTDOWN (61 nA with IO wakeup). Clocking relies on a ±1.2% accurate 4–32 MHz internal SYSOSC and ±3% 32-kHz LFOSC - eliminating need for external crystals in most automotive applications.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSPM0L1306QRHBRQ1, the M0L1305QRHBRQ1 offers optimal cost/performance balance for mid-tier automotive body controllers where 32 KB flash suffices; versus S9S12G128F0MLH, it delivers superior analog integration and lower active power, but requires migration to Arm toolchains and newer functional safety documentation packages.

Availability

M0L1305QRHBRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, steering wheel systems, and door handle modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for M0L1305QRHBRQ1 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 automotive expertise and AEC-Q100 qualification infrastructure.

The MSPM0L130x-Q1 product line targets cost-sensitive, ultra-low-power automotive body electronics - emphasizing integrated analog front-ends, functional safety readiness, and simplified clocking to reduce BOM count and design complexity.

FAQ

What is the qualified temperature range for M0L1305QRHBRQ1?

The M0L1305QRHBRQ1 is AEC-Q100 qualified for Grade 1 operation from –40°C to +125°C ambient temperature, verified per stress test conditions including HTOL, TC, and UHAST. This rating applies to the full device functionality including ADC, op-amps, and timers, making M0L1305QRHBRQ1 suitable for under-dash and cabin-mounted automotive ECUs without derating.

Does M0L1305QRHBRQ1 support LIN physical layer directly?

Yes, M0L1305QRHBRQ1 supports LIN 2.2A/B physical layer directly via UART0 or UART1 configured for LIN mode, using internal baud rate generation and break detection. PA0 and PA1 are 5-V-tolerant open-drain I/Os, enabling direct connection to LIN transceivers without external level shifters - confirmed in TI's MSPM0L130x Technical Reference Manual Section 20.3.

What low-power modes are available on M0L1305QRHBRQ1 and their typical current draw?

M0L1305QRHBRQ1 offers four low-power modes: RUN (71 µA/MHz), STOP (151 µA @ 4 MHz), STANDBY (1.0 µA with 32-kHz timer active and full SRAM retention), and SHUTDOWN (61 nA with IO wakeup). All modes are documented in Section 8.2 of the datasheet, with STANDBY enabling sub-µA operation while maintaining fast 3.2-µs wakeup to full 32-MHz operation - critical for occupancy detection and passive entry systems.

Can the chopper op-amps in M0L1305QRHBRQ1 be used in single-supply configurations?

Yes, both chopper op-amps (OPA0 and OPA1) in M0L1305QRHBRQ1 support rail-to-rail input and output operation from 1.62 V to 3.6 V supply, enabling true single-supply use down to 1.62 V. Their programmable gain (1–32×) and internal chopping eliminate DC offset drift, allowing precision amplification of low-level sensor signals like thermopiles or bridge outputs without dual supplies - verified in Section 17.1 of the datasheet.

Is M0L1305QRHBRQ1 pin-compatible with other members of the MSPM0L130x-Q1 family?

Yes, M0L1305QRHBRQ1 in the 32-pin VQFN (RHB) package shares identical pinout, electrical characteristics, and package dimensions with M0L1304QRHBRQ1 and M0L1306QRHBRQ1 - confirmed in Table 5-1 and Figure 6-2 of the datasheet. This enables seamless flash-size scaling within the same PCB layout, supporting design reuse across trim levels in automotive production programs.