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STMicroelectronics ST92F124R9TB
- Part No.:
- ST92F124R9TB
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
ST92F124R9TB.pdf
- Description:
- IC MCU 8/16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,023
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Product details
Overview
ST92F124R9TB from STMicroelectronics is an 8/16-bit single-voltage Flash microcontroller with integrated CAN 2.0B and J1850 BLPD interfaces, 128 KB Flash, 8 KB RAM, and 1 KB emulated EEPROM (E³™). It operates from 4.5–5.5 V at up to 24 MHz internal clock (83 ns instruction time) and supports RUN, WFI, SLOW, HALT, and STOP power modes. Used in automotive body control modules requiring robust serial communication and in-system programmability.
For engineers reviewing the ST92F124R9TB datasheet, ST92F124R9TB pinout, ST92F124R9TB application, or ST92F124R9TB equivalent, key selection considerations include its dual CAN 2.0B interfaces, J1850 BLPD decoder for legacy vehicle networks, 10-bit 16-channel ADC, and support for In-Application Programming (IAP) in automotive-grade temperature range.
Technical Context
The ST92F124R9TB implements a register-oriented 8/16-bit ST9 core with MMU-based memory segmentation supporting 16-Kbyte pages and 64-Kbyte segments. Its interrupt system features multi-level nesting (7 priority levels), 4 fast external interrupts plus NMI, and dedicated wake-up management via WUIMU.
Timing subsystems include two 16-bit Multifunction Timers (MFT) and two Extended Function Timers (EFT), each with input capture and output compare, plus a standard timer independent of PLL clock source. Communication is handled by dual CAN 2.0B controllers, SCI-M (multiprotocol UART/SPI/I²C-compatible), SCI-A (LIN-compliant with 13-bit sync break), SPI, and two I²C masters/slaves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ST9 8/16-bit register-oriented CPU with MMU, 224 general-purpose registers usable as RAM/accumulators/index pointers |
| Flash Memory | 128 KB single-voltage Flash with In-Application Programming (IAP) and hardware write protection |
| RAM & Emulated EEPROM | 8 KB SRAM + 1 KB E³™ (Emulated EEPROM) for nonvolatile data storage without external EEPROM chip |
| Clock System | 0–24 MHz operation; PLL clock generator (3–5 MHz crystal input); minimum instruction time 83 ns |
| Communication Interfaces | Dual CAN 2.0B active controllers, J1850 BLPD decoder, SCI-M (asynchronous/synchronous), SCI-A (LIN-compliant), SPI, two I²C interfaces |
| Analog Peripheral | 10-bit SAR ADC with up to 16 robust input channels and low-current coupling for automotive sensor interfacing |
| Power Management | Five operating modes: RUN, WFI, SLOW, HALT, STOP; supply voltage 4.5–5.5 V; qualified for automotive temperature range |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 80 configurable I/O pins, including dedicated CANH/CANL, J1850 TX/RX, LIN TX, SPI, I²C, and ADC input pins. Unused pins require termination per datasheet Section 2.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Primary 4.5–5.5 V supply domain; multiple VDD/VSS pairs ensure noise immunity and current distribution across 100-pin layout |
| OSCIN/OSCOUT | Crystal oscillator input/output | Supports 3–5 MHz fundamental-mode quartz crystal for PLL clock generation; internal load capacitors eliminate need for external caps |
| CAN1_H / CAN1_L | CAN 2.0B differential bus interface | Direct connection to ISO 11898-compliant transceiver; supports bit rates up to 1 Mbps with built-in protocol handling |
| CAN2_H / CAN2_L | Second CAN 2.0B differential bus interface | Independent controller enabling dual-bus architectures (e.g., powertrain + body networks) without external arbitration logic |
| J1850_TX / J1850_RX | J1850 Byte Level Protocol Decoder signals | Hardware-accelerated decoding of GM/Ford Class 2 and VPW protocols; eliminates software overhead in legacy diagnostics |
| LIN_TX | LIN 1.3/2.x asynchronous transmit output | 13-bit synch break generation compliant with LIN specification; enables direct connection to LIN transceiver without external timing circuitry |
| AD0–AD15 | Analog input channels | 16 multiplexed inputs to 10-bit ADC; robust against ESD and conducted noise per AEC-Q100 requirements |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B Controllers | Two independent, full-featured CAN modules with message objects, FIFOs, and error counters-enables redundant or segregated network domains |
| J1850 BLPD Hardware Decoder | Dedicated logic for GM Class 2 (10.4 kbps) and Ford VPW (10.4/41.6 kbps) protocols; offloads CPU and ensures deterministic timing for diagnostics |
| E³™ Emulated EEPROM | 1 KB of wear-leveled, sector-protected nonvolatile storage implemented in Flash; survives >100k write cycles with automatic background refresh |
| Multi-Level Interrupt Architecture | 7 priority levels with dynamic reconfiguration, 16 wake-up capable pins, and top-level interrupt vectoring-supports real-time response in safety-critical tasks |
| Flexible Timer Subsystem | Four 16-bit timers (2 MFT + 2 EFT) with input capture, output compare, PWM, and quadrature decoding-replaces discrete timing ICs in motor control and sensor sampling |
Applications
| Body Control Module (BCM) | Door Module Controller |
|---|---|
Use Scenario: Centralized management of lighting, window lifts, mirrors, and locks in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU executing CAN-based command arbitration, LIN-synchronized actuator control, and analog sensor monitoring (e.g., rain/light sensors). Use Value: Dual CAN interfaces enable simultaneous communication with instrument cluster and gateway ECU; J1850 BLPD supports legacy dealer diagnostic tools without firmware translation layer. |
Use Scenario: Local control unit inside vehicle door managing window motor, lock actuator, and side mirror positioning. IC Role / Device Role / Timing Role: Real-time motor control via MFT-generated PWM, LIN slave node for master-slave coordination, and ADC-based position feedback sampling. Use Value: Integrated 10-bit ADC with 16 channels eliminates external signal conditioning for potentiometer and Hall sensor inputs; E³™ stores calibration data across power cycles. |
| Roof Module (Sunroof/Climate) | Seat Control Unit |
Use Scenario: Coordinating sunroof glass/motor, ambient light sensing, and HVAC fan speed in roof console assemblies. IC Role / Device Role / Timing Role: CAN master for status reporting, SCI-A-driven LIN communication to HVAC actuators, and ADC acquisition of thermistor and photodiode signals. Use Value: 24 MHz core enables sub-millisecond loop execution for smooth sunroof motion control; low-power STOP mode extends battery life during vehicle sleep states. |
Use Scenario: Motorized seat position adjustment with memory recall, heating element control, and occupant detection. IC Role / Device Role / Timing Role: Dual CAN nodes for seat ECU ↔ gateway and seat ECU ↔ airbag ECU; EFT timers manage bidirectional DC motor commutation and current sensing. Use Value: Two independent CAN 2.0B controllers isolate safety-critical airbag messaging from convenience functions; 8 KB RAM buffers seat profile data and heater PWM tables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST92F150CR9 | 160 KB Flash, same core/peripherals but higher memory density; identical LQFP100 package and pinout | Preferred for designs requiring larger firmware image or extended bootloader space without PCB redesign | Select when future firmware growth or OTA update capability demands >128 KB Flash; pin-compatible drop-in upgrade path |
| NXP SPC560B50L3 | 32-bit Power Architecture core, 512 KB Flash, 48 KB RAM, dual CAN FD-but no J1850 BLPD or LIN synch-break generation | Suitable for next-gen platforms migrating to CAN FD; requires external LIN transceiver and software BLPD emulation | Choose for new designs targeting CAN FD bandwidth and ASIL-B compliance; not suitable for legacy J1850/LIN cost-sensitive retrofits |
Compared with ST92F124R9TB, ST92F150CR9 offers seamless Flash scalability within the same footprint and toolchain, while SPC560B50L3 shifts to 32-bit architecture with CAN FD but sacrifices hardware J1850/LIN acceleration-making it unsuitable for brownfield diagnostic or body-control upgrades.
Availability
ST92F124R9TB is available at Aetrix Electronics and suitable for automotive body electronics, door module control, roof console systems, and seat control units requiring stable component supply and long-term industrial availability.
Supply support for ST92F124R9TB 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with broad IP portfolios and AEC-Q100-qualified manufacturing.
The ST92Fxx family was designed specifically for cost-sensitive, high-reliability automotive body electronics requiring mixed-protocol connectivity (CAN, LIN, J1850) and Flash-based field-upgradable firmware in harsh environments.
FAQ
What is the maximum operating frequency and corresponding instruction timing for ST92F124R9TB?
The ST92F124R9TB achieves a maximum internal clock frequency of 24 MHz, yielding a minimum instruction execution time of 83 ns. This timing is guaranteed across the full 4.5–5.5 V supply range and automotive temperature grade (−40°C to +125°C), as validated in production test conditions per Doc ID 8848 Rev 7.
Does ST92F124R9TB support true hardware LIN 2.x compliance including synch break generation?
Yes. The SCI-A peripheral provides dedicated hardware generation of the 13-bit LIN synchronization break field per LIN 1.3 and LIN 2.x specifications. This eliminates CPU intervention during break transmission and ensures precise timing alignment required for interoperability with standard LIN transceivers.
How is emulated EEPROM (E³™) implemented and what endurance can be expected?
E³™ uses Flash memory sectors with wear-leveling algorithms and background refresh logic to emulate EEPROM behavior. STMicroelectronics specifies >100,000 write/erase cycles and data retention of 20 years at 85°C, verified under AEC-Q100 stress conditions. No external components or special initialization routines are required.
Are the two CAN controllers electrically isolated or share common resources?
The two CAN 2.0B controllers are fully independent-each has dedicated message RAM, acceptance filters, error counters, and transmit/receive FIFOs. They share only the APB bus interface and clock domain; no resource contention occurs during concurrent operation, enabling true dual-bus real-time performance.
ST92F124R9TB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- ST9
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST9
- Core Size:
- 8/16-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST92F124R9TB FAQ
1.How can I place an order for ST92F124R9TB through Aetrix?
Please submit a Request for Quotation (RFQ) for ST92F124R9TB 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 ST92F124R9TB reliable?
The price and inventory of ST92F124R9TB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST92F124R9TB is usually 5 days.
3.What payment methods are accepted for ST92F124R9TB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST92F124R9TB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST92F124R9TB?
ST92F124R9TB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST92F124R9TB 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 ST92F124R9TB?
For technical support, including ST92F124R9TB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST92F124R9TB requirements.
6.How does Aetrix verify that ST92F124R9TB is sourced from the original manufacturer or authorized distributors?
All ST92F124R9TB 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 ST92F124R9TB meets industry standards.
7.What is the process for return or replacement of ST92F124R9TB?
All ST92F124R9TB units undergo pre-shipment inspection (PSI). If there is an issue with ST92F124R9TB, 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 ST92F124R9TB part is unused and in its original packaging.
Return procedure for ST92F124R9TB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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