Texas Instruments TMX5703137APGEQQ1

Overview

TMX5703137APGEQQ1 from Texas Instruments is an automotive-grade 32-bit RISC flash microcontroller featuring dual ARM® Cortex®-R4F CPUs in lockstep, 3 MB of ECC-protected flash memory, 256 KB of ECC-protected RAM, and integrated safety mechanisms including BIST, voltage/clock monitoring, and error signaling. It delivers up to 298 DMIPS at 180 MHz and supports safety-critical real-time control in braking systems, electric power steering, and battery management.

For engineers reviewing the TMX5703137APGEQQ1 datasheet, TMX5703137APGEQQ1 pinout, TMX5703137APGEQQ1 application, or TMX5703137APGEQQ1 equivalent, key selection considerations include its ASIL-D-capable safety architecture, 144-pin LQFP (PGE) package with 4 GPIO interrupt-capable pins, triple DCAN support, dual N2HET timing coprocessors, and IEEE 802.3-compliant 10/100 Mbps EMAC interface.

Technical Context

The TMX5703137APGEQQ1 implements a lockstep dual-CPU architecture with hardware-level fault detection, where both cores execute identical instructions and compare results in real time. Its FMPLL and nonmodulating FlexRay PLL provide independent, safety-isolated clock domains for core, peripherals, and communication interfaces.

Memory subsystems include ECC on 3 MB flash and 256 KB RAM, parity protection on 64 KB emulated EEPROM flash, and dedicated MPUs for DMA, HTU, FTU, and RTI modules - ensuring memory access integrity across safety-critical paths.

Key Specifications

Pinout & Package

TMX5703137APGEQQ1 is housed in a 144-pin LQFP (PGE) package with exposed thermal pad, rated for -40°C to +125°C operation. Pin functions are defined per TI SPNS162C Rev C, Section 4.1 (PGE QFP Package Pinout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMX5703137APGEQQ1, the ZWT variant offers higher I/O count and external memory expansion but requires BGA assembly and lacks pin compatibility; the LS1227 reduces memory and communication peripherals while retaining core safety features - making it a functional subset rather than a drop-in alternative.

Availability

TMX5703137APGEQQ1 is available at Aetrix Electronics and suitable for automotive braking systems, electric power steering units, and battery management systems requiring stable component supply across extended product lifecycles and rigorous AEC-Q100 qualification.

Supply support for TMX5703137APGEQQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and communications markets since 1930.

The TMS570 Hercules™ family was designed specifically for ISO 26262 ASIL-D and IEC 61508 SIL-3 safety-critical applications, integrating hardware safety mechanisms directly into the MCU silicon to reduce system-level validation effort.

FAQ

What safety certifications does the TMX5703137APGEQQ1 support?

The TMX5703137APGEQQ1 is qualified to AEC-Q100 Grade 1 (-40°C to +125°C) and supports ISO 26262 ASIL-D development per TI's Functional Safety Package (SPNU570). It includes hardware safety features such as lockstep CPUs, ECC memory, BIST, and ESM - enabling certified safety applications without external safety monitors. Documentation for TMX5703137APGEQQ1 includes FMEDA reports and safety manuals aligned with automotive functional safety standards.

Does the TMX5703137APGEQQ1 include an Ethernet MAC interface?

Yes, the TMX5703137APGEQQ1 integrates a fully compliant IEEE 802.3 10/100 Mbps Ethernet Media Access Controller (EMAC) with MII, RMII, and MDIO interfaces. It supports full-duplex operation, hardware checksum offload, and configurable packet filtering. The EMAC is accessible in the TMX5703137APGEQQ1's PGE package via dedicated pins including EMAC_MDC, EMAC_MDIO, EMAC_RXD[3:0], and EMAC_TXD[3:0].

How many CAN controllers are integrated into the TMX5703137APGEQQ1?

The TMX5703137APGEQQ1 includes three fully independent DCAN controllers compliant with CAN Protocol Version 2.0B, supporting bit rates up to 1 Mbps. Each DCAN has 32 message objects with individual acceptance masking, and all support loopback self-test mode. These controllers are accessible on the TMX5703137APGEQQ1's 144-pin PGE package through dedicated TX/RX pin pairs (e.g., DCAN1_TX/DCAN1_RX on pins 121/122).

What is the maximum operating frequency of the TMX5703137APGEQQ1?

The TMX5703137APGEQQ1 operates at a maximum system clock frequency of 180 MHz, delivering up to 298 DMIPS performance using its dual ARM Cortex-R4F CPUs. This frequency is achieved using the integrated Frequency-Modulated PLL (FMPLL), which multiplies an external crystal or clock source. The core supply voltage range is 1.14 V to 1.32 V, and the I/O supply is 3.0 V to 3.6 V - both specified for reliable operation at 180 MHz in the TMX5703137APGEQQ1 datasheet.

Is the TMX5703137APGEQQ1 pin-compatible with other TMS570 devices?

No, the TMX5703137APGEQQ1 is not pin-compatible with other TMS570 family members beyond the TMS570LS3137PGE series. While it shares the same 144-pin LQFP (PGE) mechanical footprint as TMS570LS3137PGE, differences in peripheral mapping, power domain assignments, and safety configuration registers mean direct substitution requires full schematic and layout review. TI does not designate TMX5703137APGEQQ1 as a drop-in replacement for any alternate part number.