Texas Instruments TMX5700714APZQQ1

Overview

TMX5700714APZQQ1 from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4F microcontroller for automotive ASIL-D and industrial SIL-3 applications, featuring dual lockstep CPUs, 768KB flash with ECC, 128KB RAM with ECC, 160-MHz operation, and integrated functional safety diagnostics including BIST, voltage/clock monitoring, and error signaling via nERROR pin - deployed in electric power steering and braking systems.

For engineers reviewing the TMX5700714APZQQ1 datasheet, TMX5700714APZQQ1 pinout, TMX5700714APZQQ1 application, or TMX5700714APZQQ1 equivalent, this page delivers verified technical context, real-world timing/peripheral constraints, safety architecture details, and validated alternative options for ISO 26262-compliant system design.

Technical Context

The TMX5700714APZQQ1 implements a dual-core lockstep execution architecture with hardware-enforced instruction-level redundancy, where both Cortex-R4F cores execute identical code streams and compare results at each stage to detect transient or permanent faults. Its FMPLL generates internal clocks up to 160 MHz while supporting frequency modulation and slip detection for robust clock domain integrity.

Functional safety is enforced through dedicated modules: Error Signaling Module (ESM) asserts nERROR on fault detection; Built-In Self-Test (BIST) validates CPU logic and SRAM contents at startup and runtime; ECC protects all flash and RAM accesses; and parity safeguards peripheral memories including MibADC buffers, N2HET instruction RAM, and DCAN mailboxes.

Key Specifications

Pinout & Package

TMX5700714APZQQ1 is packaged in a 100-pin LQFP (PZ package), 14.0 mm × 14.0 mm body size, green RoHS-compliant finish, with 45 general-purpose I/O pins (9 interrupt-capable), dual supply domains (VCC = 1.14–1.32 V core, VCCIO = 3.0–3.6 V I/O), and Kelvin ground for precision analog reference stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMX5700714APZQQ1, TMS570LS0432PZ reduces safety coverage depth and peripheral bandwidth for cost-constrained ASIL-B nodes, while SPC574K72E5 trades N2HET programmability for FlexRay and larger memory - making TMX5700714APZQQ1 optimal for CAN-centric, N2HET-dependent EPS/brake applications demanding ASIL-D certification evidence.

Availability

TMX5700714APZQQ1 is available at Aetrix Electronics and suitable for electric power steering, braking systems, and battery management systems requiring stable component supply across automotive production lifecycles and industrial safety certifications.

Supply support for TMX5700714APZQQ1 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 specializing in analog, embedded processing, and connectivity technologies with decades of automotive qualification experience and ISO/IEC 61508 and ISO 26262 process certification.

The TMX5700714APZQQ1 belongs to the Hercules TMS570 safety microcontroller product line, engineered specifically for ASIL-D and SIL-3 real-time control applications in automotive chassis, powertrain, and industrial automation where functional safety integrity is non-negotiable.

FAQ

What safety certifications does the TMX5700714APZQQ1 support out of the box?

The TMX5700714APZQQ1 is architected to meet ISO 26262 ASIL-D and IEC 61508 SIL-3 requirements. It includes dual lockstep CPUs, ECC-protected memory, BIST logic, ESM with nERROR pin, and clock/voltage monitors - all documented in TI's Functional Safety Manual SPNU637. No external components are required to achieve these levels when used per TI's safety manual guidelines and certified toolchain.

Does the TMX5700714APZQQ1 support CAN FD or only classical CAN?

The TMX5700714APZQQ1 integrates three DCAN controllers compliant exclusively with CAN Protocol Version 2.0A and 2.0B, supporting bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended data length. For CAN FD applications, designers must select alternate MCUs like the TMS570LC4357 or SPC58ECxx series.

How many N2HET channels are accessible in the PZ (100-pin) package of TMX5700714APZQQ1?

In the TMX5700714APZQQ1 PZ package, N2HET1 provides 32 programmable channels and N2HET2 provides 18 channels - totaling 50 I/O terminals. However, due to pin multiplexing and package limitations, only 21 N2HET I/O signals are physically routed to package pins (per Table 4-20 in SPNS226E), with N2HET2_PIN_nDIS on Pin 10 enabling/disabling N2HET2 functionality.

Can the TMX5700714APZQQ1 operate with a single 3.3-V supply, or does it require separate core and I/O rails?

The TMX5700714APZQQ1 requires two independent supply domains: core voltage VCC (1.14–1.32 V) and I/O voltage VCCIO (3.0–3.6 V). These must be supplied separately - the device does not support single-supply operation. The 3.3-V I/O rail powers GPIO, CAN transceivers, and ADC references, while the low-voltage core rail minimizes dynamic power consumption at 160 MHz.

Is the TMX5700714APZQQ1 pin-compatible with other TMS570LS devices in the PZ package?

The TMX5700714APZQQ1 shares the same 100-pin PZ package footprint and basic pinout with TMS570LS0432PZ, but is not fully pin-compatible due to differences in peripheral mapping: TMS570LS0432PZ lacks I2C, has only 2 CAN controllers, omits one eQEP module, and routes fewer N2HET signals. Signal-level compatibility requires verification against each device's Terminal Functions table in their respective datasheets.