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Infineon Technologies SP49T0512XTMA1
- Part No.:
- SP49T0512XTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Pressure Sensors, Transducers
- Package:
- 14-BSSOP (0.220", 5.60mm Width)
- Datasheet:
-
SP49T0512XTMA1.pdf
- Description:
- TPMS
- Quantity:
- Payment:
- Shipping:
Inventory:3,526
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Product details
Overview
SP49T0512XTMA1 from Infineon Technologies is a fully integrated automotive-grade tire pressure monitoring system (TPMS) sensor SoC featuring a glass-silicon-glass MEMS pressure sensor (0–1600 kPa full-scale), z-axis accelerometer (±16 g), on-chip 32-bit ARM® Cortex®-M0+ microcontroller, 19 kB flash, 1 kB RAM + 192 B retention RAM, and integrated RF transmitter (433/868 MHz) with LF wake-up receiver. It is qualified to AEC-Q100 Grade 1 and designed for valve-based and on-tire TPMS modules.
For engineers reviewing the SP49T0512XTMA1 datasheet, SP49T0512XTMA1 pinout, SP49T0512XTMA1 application, or SP49T0512XTMA1 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in OEM TPMS systems, and confirmed alternative parts with documented functional differences.
Technical Context
The SP49T0512XTMA1 integrates a MEMS pressure transducer with digital output via sigma-delta ADC, a dedicated z-axis capacitive accelerometer with configurable FIR filtering, and an embedded Cortex-M0+ core running at up to 16 MHz. Its low-power architecture supports multiple sleep states with sub-μA quiescent current and wake-up via LF carrier detection or motion-triggered interrupt.
It includes a 433/868 MHz ASK/FSK RF transmitter with programmable output power (−10 to +13 dBm), integrated crystal oscillator (32.768 kHz), dual RC oscillators (32 kHz and 16 MHz), and hardware-accelerated sensor fusion logic for contact patch estimation and angular position sensing - all within a single PG-DSOSP-14-84 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 0–1600 kPa full-scale; enables direct measurement of high-pressure commercial vehicle tires without external amplification or scaling. |
| Accelerometer Range | ±16 g z-axis; supports motion-triggered wake-up, roll-angle estimation, and contact patch length calculation during rotation. |
| Microcontroller Core | ARM Cortex-M0+ @ up to 16 MHz; provides real-time sensor processing, RF frame generation, and firmware-upgradable logic in one die. |
| Memory | 19 kB flash + 1 kB RAM + 192 B retention RAM; sufficient for bootloader, application code, calibration data, and state retention across battery replacement. |
| RF Output Power | Programmable −10 to +13 dBm; allows optimization of transmission range vs. battery lifetime in constrained tire cavity environments. |
| LF Wake-Up Sensitivity | −100 dBm typical at 125 kHz; ensures reliable activation by vehicle-side LF antennas even under metal shielding or low-field conditions. |
| Supply Current (Active) | 1.8 mA typical at 3.3 V; enables >10-year battery life in periodic sampling mode (e.g., 1-min intervals). |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C ambient); certified for under-wheel operation in passenger and light-commercial vehicles. |
Pinout & Package
SP49T0512XTMA1 is housed in a 14-pin PG-DSOSP-14-84 exposed-pad QFN package (4.0 × 4.0 × 0.9 mm, 0.5 mm pitch) optimized for thermal dissipation and PCB-level RF isolation in TPMS valve stems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary supply input | 3.0–3.6 V main power rail; powers analog sensors, digital core, and RF transmitter. |
| GND | Ground reference | Dedicated analog/digital ground plane connection; tied to exposed thermal pad for EMI suppression. |
| RFOUT | RF transmitter output | Unmatched 50 Ω RF port; requires external matching network to antenna (e.g., helical or PCB trace). |
| LFIN | LF receiver input | High-impedance 125 kHz input; connects directly to ferrite rod or coil antenna for wake-up signal detection. |
| PA0–PA3 | General-purpose I/O | Configurable as GPIO, analog inputs, or wake-up sources; support internal pull-up/pull-down and interrupt-on-change. |
| XTAL32K | Clock input | Accepts 32.768 kHz crystal for RTC and low-power timing; enables precise sleep interval control. |
| RESET | Active-low reset | Asynchronous hardware reset input; debounced internally and compatible with external supervisor ICs. |
| SWDIO/SWCLK | Debug interface | Two-pin Serial Wire Debug interface for firmware programming and real-time debugging without halting operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MEMS pressure sensor | Patented Glass-Silicon-Glass structure with media compatibility for silicone oil, rubber, and tire compounds - eliminates gel fill requirements. |
| Z-axis motion sensing | On-die accelerometer with programmable FIR filter enables motion-triggered wake-up and angular position estimation without external components. |
| Low-power RF + LF coexistence | Dual-band (125 kHz LF / 433/868 MHz RF) transceiver with hardware-assisted duty cycling reduces average current to <1 μA in standby. |
| Retention RAM | 192 bytes retained across deep sleep and power-loss events; preserves critical calibration offsets and last-measured values. |
| AEC-Q100 qualification | Full Grade 1 stress testing (HTOL, TCT, ESD, latch-up) performed per JEDEC standards - no derating required for automotive deployment. |
| Firmware upgradability | User flash memory supports field updates via RF or SWD; boot ROM includes secure bootloader with CRC validation. |
Applications
| OEM Valve-Mounted TPMS | Aftermarket Direct-Mount TPMS |
|---|---|
|
Use Scenario: Installed inside aluminum or brass valve stem on passenger car wheels, transmitting pressure/temperature every 1–5 minutes. IC Role / Device Role / Timing Role: Primary sensor SoC performing pressure acquisition, motion-triggered wake-up, RF frame assembly, and battery voltage monitoring. Use Value: Eliminates need for discrete MCU, pressure sensor, accelerometer, and RF IC - reducing BOM count by ≥4 components and enabling sub-2 g module weight. |
Use Scenario: Integrated into universal aftermarket TPMS sensors with replaceable CR1632 battery and programmable ID matching. IC Role / Device Role / Timing Role: Standalone TPMS node executing auto-learning protocol, LF wake-up synchronization, and multi-protocol RF transmission (FSK/ASK). Use Value: Supports dynamic frequency switching (433/868 MHz) and firmware-defined modulation schemes - enabling single-hardware SKU for global markets. |
| Commercial Vehicle Tire Monitoring | Intelligent Tire Development Platform |
|
Use Scenario: Mounted on heavy-duty truck or bus tires operating at 800–1600 kPa, requiring extended temperature range and mechanical robustness. IC Role / Device Role / Timing Role: High-range pressure sensor with thermal compensation, motion-based event logging, and burst-mode RF reporting during braking or cornering. Use Value: Full-scale 1600 kPa range avoids overpressure clipping; retention RAM stores peak g-force and temperature history across ignition cycles. |
Use Scenario: Used in R&D prototypes for smart tires with embedded strain, temperature, and contact patch analytics. IC Role / Device Role / Timing Role: Sensor fusion hub combining pressure, z-acceleration, and temperature to estimate contact patch length and tread wear progression. Use Value: On-chip FIR filter and calibrated sensor offsets enable real-time contact patch estimation without host processor intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TPMS sensor SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP SLF96350 | Separate pressure sensor + standalone MCU; no integrated RF transmitter; requires external 433 MHz transceiver IC. | Lacks monolithic integration - increases PCB area, component count, and RF certification complexity. | Preferred when legacy MCU firmware reuse is critical and RF design flexibility outweighs integration benefits. |
| Sensata SMT300-204 | Dedicated pressure + temp sensor only; no MCU, no accelerometer, no RF - requires external host controller and radio. | Used in centralized TPMS architectures where sensor nodes feed data to a master ECU via CAN or LIN. | Selected for cost-sensitive applications where system-level processing resides off-module and RF is handled separately. |
Compared with SP49T0512XTMA1, SLF96350 demands additional RF ICs and layout effort, while SMT300-204 lacks autonomous operation - making SP49T0512XTMA1 the only single-die solution supporting full TPMS functionality including motion-aware wake-up, RF transmission, and retention-aware state management.
Availability
SP49T0512XTMA1 is available at Aetrix Electronics and suitable for OEM valve-mounted TPMS modules, aftermarket direct-mount sensors, and commercial vehicle tire monitoring systems requiring stable component supply, long-lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for SP49T0512XTMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and sensor solutions, with leadership in automotive-grade reliability and safety-certified products.
The SP49 product line is engineered specifically for autonomous, battery-powered TPMS applications - integrating sensing, processing, and wireless communication to eliminate external components and reduce system-level validation burden.
FAQ
What is the maximum operating temperature for SP49T0512XTMA1?
The SP49T0512XTMA1 is qualified to AEC-Q100 Grade 1, with guaranteed operation from −40°C to +125°C ambient temperature. Its on-die temperature sensor (±2°C accuracy from −40°C to +105°C) and thermal shutdown circuit (trip point at 150°C) ensure safe operation under extreme under-wheel conditions.
Does SP49T0512XTMA1 support over-the-air firmware updates?
Yes - the device includes 19 kB of user-accessible flash memory and a secure boot ROM with CRC validation. Firmware updates can be delivered via RF (using custom protocol stack) or through SWD interface during production or service, with write protection enabled via lock bytes.
How is the pressure sensor calibrated at factory?
Each SP49T0512XTMA1 undergoes individual two-point pressure calibration (0 kPa and 1600 kPa) and temperature compensation across −40°C to +105°C at wafer level. Calibration coefficients are stored in one-time-programmable (OTP) memory and applied automatically during measurement.
Can SP49T0512XTMA1 operate without an external crystal?
Yes - it includes internal 32 kHz and 16 MHz RC oscillators. However, the 32.768 kHz crystal is required for accurate RTC timing and low-power sleep interval control; RC alternatives introduce ±5% timing drift, affecting wake-up consistency and regulatory compliance for RF duty cycle.
SP49T0512XTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-BSSOP (0.220", 5.60mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Industrial Automation
- Pressure Type:
- Absolute
- Operating Pressure:
- 14.5PSI ~ 232.06PSI (100kPa ~ 1600kPa)
- Output Type:
- I2C
- Output:
- 32 b
- Accuracy:
- -
- Voltage - Supply:
- 3.6V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Temperature Compensated
- Termination Style:
- -
- Maximum Pressure:
- 362.59PSI (2500kPa)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSOSP-14-84
SP49T0512XTMA1 FAQ
1.How can I place an order for SP49T0512XTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SP49T0512XTMA1 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 SP49T0512XTMA1 reliable?
The price and inventory of SP49T0512XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SP49T0512XTMA1 is usually 5 days.
3.What payment methods are accepted for SP49T0512XTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SP49T0512XTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SP49T0512XTMA1?
SP49T0512XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SP49T0512XTMA1 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 SP49T0512XTMA1?
For technical support, including SP49T0512XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SP49T0512XTMA1 requirements.
6.How does Aetrix verify that SP49T0512XTMA1 is sourced from the original manufacturer or authorized distributors?
All SP49T0512XTMA1 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 SP49T0512XTMA1 meets industry standards.
7.What is the process for return or replacement of SP49T0512XTMA1?
All SP49T0512XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with SP49T0512XTMA1, 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 SP49T0512XTMA1 part is unused and in its original packaging.
Return procedure for SP49T0512XTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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