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STMicroelectronics SPC56EL70L3CBFSR
- Part No.:
- SPC56EL70L3CBFSR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
SPC56EL70L3CBFSR.pdf
- Description:
- IC MCU 32BIT 2MB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,343
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Product details
Overview
SPC56EL70L3CBFSR from STMicroelectronics is a 32-bit Power Architecture® automotive microcontroller with dual e200z4d cores, 2 MB flash (ECC), 192 KB SRAM (ECC), and SIL3/ASIL D safety certification for chassis and safety-critical systems. It integrates FlexRay (2×10 Mbit/s), 3×FlexCAN 2.0B, 2×LINFlexD, 3×DSPI, dual 12-bit ADCs, and hardware BIST for memory and logic.
For engineers reviewing the SPC56EL70L3CBFSR datasheet, SPC56EL70L3CBFSR pinout, SPC56EL70L3CBFSR application, or SPC56EL70L3CBFSR equivalent, key selection considerations include lock-step core redundancy, FCCU/RCCU fault management, RWW EEPROM emulation, Nexus Class 3+ debug support, and LQFP100 package compatibility with automotive thermal (-40 °C to 150 °C junction) and voltage (3.0–3.6 V) requirements.
Technical Context
The device implements a Sphere of Replication (SoR) architecture covering CPU cores, eDMA, and crossbar switch, with redundant outputs verified by RCCU and aggregated into FCCU for fail-safe response. Boot-time MBIST/LBIST and software-triggered ADC/flash BIST enable deterministic safety verification at power-up and runtime.
Its decoupled parallel mode allows independent core execution while retaining lock-step capability; the FMPLL supports frequency modulation for EMI reduction, and the CTU synchronizes ADC sampling with eTimer/FlexPWM events for deterministic sensor-to-actuator timing in chassis control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | e200z4d dual-core Power Architecture® with VLE, MMU, and SPE for real-time deterministic control |
| Max Core Frequency | 120 MHz - enables sub-10 µs interrupt latency and <50 µs PWM update cycles for active suspension |
| Flash Memory | 2 MB with ECC - supports ASIL D-compliant code storage and RWW for safe firmware updates |
| SRAM | 192 KB with ECC - provides fault-tolerant data buffers for safety-critical state variables |
| Safety Certification | SIL3 / ASIL D - validated for chassis applications including electronic braking and steering control |
| FlexRay Interface | 2-channel, V2.1 Rev A, up to 10 Mbit/s - meets automotive x-by-wire timing and determinism requirements |
| ADC Resolution | Dual 12-bit with 16 channels and CTU-triggered synchronization - enables precise torque/speed feedback in motor control |
Pinout & Package
LQFP100 (14 × 14 × 1.4 mm) package with exposed thermal pad; 100-pin layout optimized for automotive PCB routing, EMC robustness, and thermal dissipation under 150 °C junction conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA, VDDIO, VDD | Analog/digital/power supply rails | Separate 3.3 V domains ensure ADC accuracy and I/O noise immunity; decoupling per Table 10 required |
| RESET | Asynchronous reset input | Active-low, glitch-filtered; initiates destructive or functional reset sequences per Table 31 |
| CLKIN, EXTAL, XTAL | Main oscillator inputs | Supports crystal (4–20 MHz) or external clock; enables FMPLL lock with ±0.5% stability over temp |
| FRAY_TX0/1, FRAY_RX0/1 | FlexRay differential pairs | Two independent 10 Mbit/s channels with integrated bus guardian logic and message buffer arbitration |
| CAN0_TX/RX, CAN1_TX/RX | FlexCAN 2.0B transceiver interfaces | 32-message object FIFOs with hardware ID filtering; supports wake-on-CAN in low-power modes |
| ET0_CH0–ET0_CH5 | eTimer channel outputs | 6-channel unit with input capture, output compare, and quadrature decoding for wheel speed sensing |
Key Features
| Feature | Design Value |
|---|---|
| Lock-step CPU replication | Hardware-matched dual e200z4d cores with RCCU comparison and FCCU fault escalation |
| Boot-time BIST coverage | MBIST for all flash/SRAM banks and LBIST for SoR logic blocks - executed before application start |
| Replicated watchdog & temp sensor | Two independent SWT modules and junction temperature sensors with cross-checking |
| Programmable Cross Triggering Unit (CTU) | Hardware-synchronized ADC conversion start with eTimer/FlexPWM edges - eliminates software jitter |
| Nexus Class 3+ debug interface | Real-time trace, non-intrusive breakpoints, and memory access during lock-step operation |
Applications
| Electric Power Steering (EPS) | Brake-by-Wire Control Unit |
|---|---|
Use Scenario: Real-time torque assist calculation and motor phase current regulation under dynamic load. IC Role / Device Role / Timing Role: Primary safety controller executing ASIL D motor control algorithms with lock-step core validation. Use Value: Sub-50 µs PWM update cycle and CTU-synchronized ADC sampling ensure <±0.5° steering angle error at 100 km/h. | Use Scenario: Coordinating hydraulic pressure modulation across four wheel calipers during ABS/EBA events. IC Role / Device Role / Timing Role: Central chassis domain controller managing FlexRay communication, safety monitoring, and actuator command arbitration. Use Value: Dual FlexRay channels provide redundant 10 Mbit/s deterministic messaging with <10 µs end-to-end latency for brake pressure commands. |
| Active Suspension Controller | Steer-by-Wire Interface Module |
Use Scenario: Processing accelerometer and wheel speed data to compute real-time damper force profiles. IC Role / Device Role / Timing Role: High-integrity sensor fusion node with dual ADCs, eTimers, and SPE-accelerated filtering. Use Value: 12-bit ADCs with programmable gain and CTU-triggered sampling achieve <100 ns timing alignment between inertial and kinematic inputs. | Use Scenario: Translating steering column torque/angle signals into validated CAN/FlexRay commands for front axle actuators. IC Role / Device Role / Timing Role: Safety gateway with dual FlexCAN and FlexRay interfaces, performing signal integrity checking and timeout supervision. Use Value: FCCU-managed fault tree ensures immediate shutdown on mismatch between primary/backup torque sensor paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SPC56EL70L5CBFSR | Same die, higher flash retention spec (15 years vs. 10 years) and extended -40 °C to 150 °C junction rating | Required for long-life commercial vehicle platforms with >15-year service life | Select when extended data retention or broader thermal margin is mandated by OEM specification |
| TC275T-64F200N AC | TriCore™ architecture, 200 MHz, 4 MB flash, but no FlexRay PHY; uses external transceivers | Lacks integrated FlexRay physical layer - requires additional BOM cost and PCB area | Choose only if existing TriCore toolchain and ecosystem outweigh FlexRay integration benefits |
Compared with SPC56EL70L5CBFSR, the L3 variant trades minor data retention margin for cost-sensitive chassis modules; versus TC275T, it delivers native FlexRay compliance and lower system-level design complexity despite lower clock speed.
Availability
SPC56EL70L3CBFSR is available at Aetrix Electronics and suitable for electric power steering, brake-by-wire, active suspension, and steer-by-wire systems requiring stable component supply, long-term automotive qualification, and ASIL D safety compliance.
Supply support for SPC56EL70L3CBFSR 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, specializing in automotive, industrial, and power solutions with ISO/TS 16949-certified manufacturing.
The SPC56xL70 product line targets ASIL D chassis control applications, integrating hardware safety mechanisms, deterministic communication peripherals, and automotive-grade reliability for x-by-wire and active safety systems.
FAQ
What is the maximum ambient operating temperature for SPC56EL70L3CBFSR?
The device is rated for ambient temperatures from –40 °C to 125 °C, with a junction temperature limit of 150 °C. Thermal design must ensure junction temperature remains within specification under worst-case power dissipation, using the θJA = 32.5 °C/W value for LQFP100 per Table 11.
Does SPC56EL70L3CBFSR support EEPROM emulation out of the box?
Yes - it includes built-in Read-While-Write (RWW) capability in flash memory, enabling concurrent code execution and data logging without external EEPROM. The hardware abstraction layer (HAL) in ST's SPC5 Studio supports wear-leveling and atomic write primitives compliant with ISO 26262 ASIL B data storage requirements.
How is FlexRay clock synchronization achieved on this MCU?
FlexRay timing is synchronized via the internal FMPLL, which generates the 10 MHz reference clock for both FlexRay channels. The module uses a dedicated clock monitor unit (CMU) to detect PLL drift exceeding ±0.5%, triggering FCCU-initiated fail-safe transitions per ISO 17458-3.
Can the dual e200z4d cores operate independently outside lock-step mode?
Yes - decoupled parallel mode allows full independent execution of both cores, with shared resources arbitrated via the crossbar switch. This mode is used for non-safety tasks like diagnostics or communication stack processing, while safety-critical functions remain in lock-step with RCCU/FCCU supervision.
SPC56EL70L3CBFSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- SPC56xL
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- e200z4d
- Core Size:
- 32-Bit Dual-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, LINbus, SCI, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 57
- Program Memory Size:
- 2MB (2M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 192K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.63V
- Data Converters:
- A/D 32x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SPC56EL70L3CBFSR FAQ
1.How can I place an order for SPC56EL70L3CBFSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SPC56EL70L3CBFSR 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 SPC56EL70L3CBFSR reliable?
The price and inventory of SPC56EL70L3CBFSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPC56EL70L3CBFSR is usually 5 days.
3.What payment methods are accepted for SPC56EL70L3CBFSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPC56EL70L3CBFSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPC56EL70L3CBFSR?
SPC56EL70L3CBFSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPC56EL70L3CBFSR 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 SPC56EL70L3CBFSR?
For technical support, including SPC56EL70L3CBFSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPC56EL70L3CBFSR requirements.
6.How does Aetrix verify that SPC56EL70L3CBFSR is sourced from the original manufacturer or authorized distributors?
All SPC56EL70L3CBFSR 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 SPC56EL70L3CBFSR meets industry standards.
7.What is the process for return or replacement of SPC56EL70L3CBFSR?
All SPC56EL70L3CBFSR units undergo pre-shipment inspection (PSI). If there is an issue with SPC56EL70L3CBFSR, 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 SPC56EL70L3CBFSR part is unused and in its original packaging.
Return procedure for SPC56EL70L3CBFSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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