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Texas Instruments TMX5700432APZQQ1
- Part No.:
- TMX5700432APZQQ1
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
TMX5700432APZQQ1.pdf
- Description:
- IC MCU 16/32B 384KB FLSH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,409
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Product details
Overview
TMX5700432APZQQ1 from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4 microcontroller for automotive ASIL-D and IEC 61508 SIL-3 applications. It features dual lockstep CPUs, 384KB flash with ECC, 32KB RAM with ECC, 80-MHz operation, and integrated N2HET, eQEP, dual DCAN, and 12-bit 16-channel ADC - deployed in electric power steering and brake control systems.
For engineers reviewing the TMX5700432APZQQ1 datasheet, TMX5700432APZQQ1 pinout, TMX5700432APZQQ1 application, or TMX5700432APZQQ1 equivalent, key selection criteria include functional safety architecture validation, CAN 2.0B compliance, N2HET programmability for real-time actuator timing, and 100-pin LQFP package compatibility with automotive PCB layouts.
Technical Context
The TMX5700432APZQQ1 implements a dual-core lockstep execution model where both Cortex-R4 cores execute identical instructions and compare results at each cycle to detect transient or permanent faults. Its FMPLL generates internal clocks from an external crystal, while the Error Signaling Module (ESM) monitors voltage, clock, memory, and peripheral errors - asserting the nERROR pin on critical fault detection.
Peripheral safety is enforced via parity protection on MibSPI, DCAN mailboxes, VIM, and ADC buffers; ECC on flash and SRAM; and built-in self-test (BIST) for CPU and memory. The N2HET coprocessor operates independently with 128-word instruction RAM and hardware angle generation, enabling deterministic pulse-width modulation and encoder interface without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-R4, 80 MHz max - delivers 132 DMIPS for real-time control loops in safety-critical systems. |
| Flash Memory | 384 KB with ECC - supports safe over-the-air updates and retains integrity under radiation or voltage stress. |
| RAM | 32 KB SRAM with ECC - enables fault-tolerant data storage for control state variables and diagnostics. |
| ADC | 12-bit, 16-channel MibADC with 64-word parity-protected buffer - provides synchronized sampling for motor current/voltage sensing. |
| DCAN Interfaces | Two CAN 2.0B controllers: DCAN1 (32 mailboxes), DCAN2 (16 mailboxes) - meets automotive network redundancy requirements. |
| N2HET Channels | 19 programmable I/O pins with 128-word instruction RAM - offloads precise PWM, capture, and GPIO timing from main CPU. |
| eQEP Module | Single enhanced quadrature encoder interface - directly connects to rotary position sensors in EPS and ABS actuators. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 Grade 1. |
Pinout & Package
TMX5700432APZQQ1 is housed in a 100-pin LQFP (PZ) package measuring 14.00 mm × 14.00 mm, RoHS-compliant and green-graded, with exposed thermal pad not present (standard PZ variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nERROR (Pin 82) | Error signaling output | Active-low open-drain fault indicator tied to system watchdog or safety controller for ASIL-D failure escalation. |
| CAN1TX/CAN1RX (Pins 62/63) | CAN 2.0B differential interface | Direct connection to isolated CAN transceiver; supports 1 Mbps baud rate with built-in loopback test mode. |
| N2HET[0]–N2HET[18] (Pins 19,22,25,26,74,83,89,90,97,98,27,11,64,39,58,18,68,12) | High-end timer I/O | Configurable as PWM outputs, input captures, or GPIOs - each with programmable glitch filter and MPU-protected HTU DMA access. |
| ADIN[0]–ADIN[21] (Pins 42,49,51,52,54,55,56,43,57,48,50,53,40,41,44,45) | Analog input channels | 16 dedicated ADC inputs with dedicated VCCAD/VSSAD supply rails - enables ratiometric measurement independent of I/O rail noise. |
| VCC (Pin 13), VCCIO (Pins 29,30,32,33,46,72,85,86,99), VCCAD (Pin 46) | Power domains | Separate 1.2-V core, 3.3-V I/O, and 3.3-V ADC supplies - allows independent power sequencing and fault isolation per ISO 26262. |
Key Features
| Feature | Design Value |
|---|---|
| Dual lockstep Cortex-R4 CPUs | Hardware-level fault detection with zero-latency comparison - eliminates need for software-based voting in ASIL-D designs. |
| ECC on flash and RAM | Corrects single-bit errors and detects double-bit errors in real time - prevents silent data corruption during program execution or data logging. |
| FMPLL with slip detector | Frequency-modulated PLL with hardware slip detection - ensures clock domain integrity during EMI events or oscillator drift. |
| 96-channel vectored interrupt (VIM) | Prioritized, low-latency interrupt handling with parity-protected vector table - guarantees deterministic response to safety-critical events like brake pedal press. |
| Advanced JTAG Security Module (AJSM) | Secure debug authentication and boundary scan disable - prevents unauthorized firmware extraction or tampering in production units. |
| External Clock Prescaler (ECP) | Programmable ECLK output derived from VCLK - enables external monitoring of MCU operational frequency for safety audits. |
Applications
| Braking Systems (ABS/ESC) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time hydraulic pressure modulation and wheel speed synchronization during emergency stops. IC Role / Device Role / Timing Role: Safety controller executing ASIL-D braking algorithms with lockstep CPU verification and DCAN communication to wheel speed sensors. Use Value: Enables fail-operational braking via redundant processing paths and ECC-protected flash storing certified control laws. | Use Scenario: Torque assist calculation and motor phase control in column-assist EPS systems. IC Role / Device Role / Timing Role: Main MCU managing torque sensor interface, eQEP-based motor rotor position, and N2HET-driven 3-phase PWM generation. Use Value: Achieves <10 µs PWM update latency and sub-degree motor angle resolution for smooth, responsive steering feel. |
| Battery Management Systems | Railway Communications |
Use Scenario: Cell voltage monitoring, thermal management, and contactor control in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Safety monitor interfacing with analog front-end ICs via MibADC and isolating CAN bus traffic between BMS master and slave nodes. Use Value: Supports ISO 26262 ASIL-C decomposition by providing hardware-verified memory and communication integrity. | Use Scenario: Vital signaling and train control data exchange across redundant Ethernet and CAN networks in ETCS Level 2 deployments. IC Role / Device Role / Timing Role: SIL-3-certified communication gateway with dual DCAN, LIN, and SPI interfaces synchronizing with GPS time stamps. Use Value: Meets EN 50128 SW-SIL3 requirements through BIST, ESM fault reporting, and traceable error logs stored in ECC RAM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS570LS0332PZ | 256 KB flash (vs. 384 KB), same 100-pin PZ package and peripheral set. | Suitable for cost-optimized ASIL-B systems where reduced code footprint suffices. | Select when application firmware fits within 256 KB and full ASIL-D certification scope is not required. |
| SPC574SADK2 | Power Architecture e200z4 dual-core, 200 MHz, 2 MB flash, supports AUTOSAR 4.3. | Targets higher-complexity powertrain ECUs requiring AUTOSAR OS and complex driver stacks. | Choose for new AUTOSAR-based architectures needing broader middleware support and higher compute throughput. |
Compared with TMS570LS0332PZ, TMX5700432APZQQ1 offers 128 KB more ECC flash for larger safety routines and diagnostic logs; versus SPC574SADK2, it provides tighter integration of N2HET for deterministic timing but lacks native AUTOSAR OS certification - making it optimal for standalone safety-critical motion control rather than full-stack powertrain domains.
Availability
TMX5700432APZQQ1 is available at Aetrix Electronics and suitable for electric power steering, braking systems, and railway communications requiring stable component supply across extended product lifecycles.
Supply support for TMX5700432APZQQ1 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 specializing in analog, embedded processing, and connectivity technologies with leadership in automotive and industrial safety solutions.
The TMS570 Hercules™ platform was designed specifically for functional safety applications demanding ASIL-D and SIL-3 compliance, integrating hardware fault tolerance, diagnostic libraries, and certification artifacts from the silicon level upward.
FAQ
What safety certifications does the TMX5700432APZQQ1 hold?
The TMX5700432APZQQ1 is certified to ISO 26262 ASIL-D at the device level and IEC 61508 SIL-3, with supporting documentation including FMEDA reports, safety manuals, and diagnostic coverage analysis. TI provides certified safety libraries and HALCoGen configuration tools validated for use with TMX5700432APZQQ1 in certified safety architectures.
Does the TMX5700432APZQQ1 support AUTOSAR?
The TMX5700432APZQQ1 does not include native AUTOSAR OS certification, though its peripherals and memory architecture are compatible with third-party AUTOSAR BSW stacks. TI recommends using the Hercules SafeTI™ diagnostic library alongside AUTOSAR-compliant MCAL drivers for ASIL-D integration - TMX5700432APZQQ1 itself serves as the hardware foundation, not a pre-integrated AUTOSAR solution.
How many CAN interfaces does the TMX5700432APZQQ1 have, and what protocol versions are supported?
The TMX5700432APZQQ1 integrates two Controller Area Network (DCAN) modules: DCAN1 with 32 mailboxes and DCAN2 with 16 mailboxes, both compliant with CAN Protocol Version 2.0B. They support bit rates up to 1 Mbps, message filtering, loopback testing, and parity-protected mailbox RAM - meeting requirements for redundant vehicle networks in ASIL-D systems.
What is the role of the N2HET module in the TMX5700432APZQQ1?
The Next Generation High-End Timer (N2HET) in TMX5700432APZQQ1 is a programmable coprocessor with 19 I/O pins and 128-word instruction RAM, used for ultra-precise timing tasks such as PWM generation, encoder pulse counting, and GPIO sequencing - all executed independently of the main CPU to ensure deterministic latency and reduce software overhead in real-time control.
Can the TMX5700432APZQQ1 operate without external memory?
Yes, the TMX5700432APZQQ1 is a fully self-contained microcontroller with 384 KB on-chip flash, 32 KB on-chip RAM, and 16 KB emulated EEPROM - eliminating the need for external memory in most safety-critical automotive applications. Its memory subsystem includes ECC and parity protection, ensuring data integrity without external error-correction logic.
TMX5700432APZQQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Hercules™ TMS570 ARM® Cortex®-R
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-R4
- Core Size:
- 16/32-Bit
- Speed:
- 80MHz
- Connectivity:
- CANbus, LINbus, MibSPI, SCI, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 45
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.14V ~ 1.32V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMX5700432APZQQ1 FAQ
1.How can I place an order for TMX5700432APZQQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMX5700432APZQQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMX5700432APZQQ1 reliable?
The price and inventory of TMX5700432APZQQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMX5700432APZQQ1 is usually 5 days.
3.What payment methods are accepted for TMX5700432APZQQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMX5700432APZQQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMX5700432APZQQ1?
TMX5700432APZQQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMX5700432APZQQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMX5700432APZQQ1?
For technical support, including TMX5700432APZQQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMX5700432APZQQ1 requirements.
6.How does Aetrix verify that TMX5700432APZQQ1 is sourced from the original manufacturer or authorized distributors?
All TMX5700432APZQQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMX5700432APZQQ1 meets industry standards.
7.What is the process for return or replacement of TMX5700432APZQQ1?
All TMX5700432APZQQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMX5700432APZQQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMX5700432APZQQ1 part is unused and in its original packaging.
Return procedure for TMX5700432APZQQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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