My Inquiry
My Account
NXP Semiconductors SPC5643LF2MLQ1R
- Part No.:
- SPC5643LF2MLQ1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
SPC5643LF2MLQ1R.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SPC5643LF2MLQ1R from NXP Semiconductors is a dual-core automotive safety microcontroller built on Power Architecture® e200z4d cores, operating up to 120 MHz with LockStep and Decoupled Parallel modes. It integrates 1 MB flash with ECC, 128 KB SRAM with ECC, and supports SIL3/ASILD compliance via FCCU, RCCU, and replicated safety peripherals. It targets electric power steering (EPS) and airbag control systems requiring functional safety certification.
For engineers reviewing the SPC5643LF2MLQ1R datasheet, SPC5643LF2MLQ1R pinout, SPC5643LF2MLQ1R application, or SPC5643LF2MLQ1R equivalent, key selection criteria include dual-core lockstep operation, ISO 26262 ASIL D support, FlexRay v2.1 (10 Mbit/s), dual FlexCAN 2.0B interfaces, and 2×12-bit ADCs with cross-triggering for motor control timing precision.
Technical Context
The SPC5643LF2MLQ1R implements two replicated e200z4d cores with Harvard architecture, 4 KB instruction cache with error detection code, and Variable Length Encoding (VLE) for compact code density. Its crossbar switch supports four master ports (dual BIUs, eDMA, FlexRay) and three slave ports (flash, SRAM, peripheral bridge), enabling concurrent memory accesses with programmable arbitration.
Safety is enforced through Sphere of Replication (SoR) covering CPU, eDMA, and XBAR, backed by Fault Collection and Control Unit (FCCU), Redundancy Control and Checker Unit (RCCU), and boot-time MBIST/LBIST. The device uses dual FMPLLs, 16 MHz internal RC oscillator, and external crystal (4–40 MHz) for clock redundancy and fail-safe monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | e200z4d dual core, Power Architecture®, VLE and SPE support for DSP-intensive motor control |
| Max Core Frequency | 120 MHz - enables real-time EPS torque calculation and CAN/FlexRay message scheduling within hard deadlines |
| Flash Memory | 1 MB with ECC - supports RWW for EEPROM emulation and safe over-the-air (OTA) firmware updates |
| SRAM | 128 KB with ECC - provides fault-tolerant data storage for safety-critical variables and stack in ASIL D partitions |
| Safety Certification | SIL3 / ASIL D compliant - achieved via LockStep execution, replicated peripherals, FCCU, and hardware BIST |
| ADC | 2 × 12-bit, 16-channel - synchronized via CTU for simultaneous sampling of motor phase currents and DC-link voltage |
| FlexRay | V2.1 Rev. A, 2 channels, 64 buffers, up to 10 Mbit/s - meets deterministic communication requirements in x-by-wire chassis systems |
Pinout & Package
SPC5643LF2MLQ1R is housed in a 257-pin MAPBGA package (14 mm × 14 mm × 0.8 mm), optimized for automotive ECU thermal and mechanical reliability. Pin assignments follow NXP's standardized MPC5643L signal mapping with dedicated supply, ground, and safety-monitoring pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_MAIN | Main power supply | 3.0–3.6 V input feeding core logic and integrated PMU; requires local decoupling per NXP layout guidelines |
| VDD_ANA | Analog reference supply | Separate 3.0–3.6 V rail for ADC and SWG; isolation prevents digital noise from degrading analog accuracy |
| RESET_IN | Asynchronous reset input | Active-low signal initiating full system reset including FCCU state machine and safety monitors |
| FCCU_ERR | Fault reporting output | Open-drain signal asserted by FCCU on detected SoR mismatch or memory error - drives external watchdog or system shutdown circuitry |
| CLKIN | External crystal input | Accepts 4–40 MHz fundamental-mode crystal; used as primary clock source for FMPLL and safety-critical timing paths |
| NEXUS_TDI | JTAG/Nexus debug input | Class 3+ Nexus interface pin enabling real-time trace, non-intrusive debugging, and safety verification during development |
Key Features
| Feature | Design Value |
|---|---|
| Dual e200z4d cores in LockStep mode | Hardware-enforced instruction-level comparison ensures immediate fault detection for ASIL D compliance |
| Replicated safety peripherals | FCCU, RCCU, temperature sensor, and watchdog each implemented in duplicate with cross-checking logic |
| Boot-time MBIST/LBIST | Hardware-triggered memory and logic self-test executed before application code launch - required for ISO 26262 startup sequence |
| FlexPWM with auxiliary clock domain | Independent 120 MHz clock domain enables precise PWM generation without interference from system clock jitter or scaling |
| CTU-synchronized ADC conversion | Programmable cross-triggering unit aligns ADC sampling with eTimer capture events - essential for field-oriented control (FOC) |
Applications
| Electric Power Steering (EPS) | Airbag Deployment Control |
|---|---|
Use Scenario: Real-time torque assist calculation, motor position feedback processing, and CAN-based vehicle bus communication in column-assist EPS modules. IC Role / Device Role / Timing Role: Primary safety controller executing ASIL D software partition, managing FlexPWM-driven 3-phase inverter, and validating sensor inputs via replicated ADCs. Use Value: Dual-core LockStep execution and FCCU-monitored memory subsystem ensure <100 µs fault detection latency - meeting ISO 26262-6 timing requirements for steering actuation. | Use Scenario: High-reliability crash event detection, pyrotechnic squib firing sequencing, and diagnostic logging in front/side airbag ECUs. IC Role / Device Role / Timing Role: Safety-certified host processor running certified RTOS, interfacing with accelerometers via SPI, and controlling dual FlexCAN networks for redundant sensor fusion. Use Value: Replicated INTC and eDMA enable deterministic interrupt response (<5 µs) and zero-copy sensor data movement - critical for sub-10 ms deployment timing. |
| Brake-by-Wire Actuation | Hydraulic Power Steering (EHPS) |
Use Scenario: Closed-loop pressure control, valve driver management, and FlexRay-based coordination with other chassis controllers in electro-hydraulic brake systems. IC Role / Device Role / Timing Role: Deterministic real-time controller with FlexRay v2.1 interface, executing SIL3-certified motion control algorithms and monitoring hydraulic pressure sensors via ADC. Use Value: 10 Mbit/s FlexRay with 64 message buffers guarantees <250 µs end-to-end latency for distributed brake command synchronization across multiple nodes. | Use Scenario: Motor speed regulation, pump pressure feedback, and LIN-based communication with body control module in electric-hydraulic power steering units. IC Role / Device Role / Timing Role: Integrated motor controller handling LINFlexD diagnostics, eTimer-based commutation timing, and SWG-based sine-wave generation for sensorless rotor position estimation. Use Value: On-chip SWG with low-pass filter eliminates external DAC components while delivering <1% THD - reducing BOM cost and board space in compact EHPS modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPC5643LK2MLQ1R | Same die, higher temperature grade (–40 °C to 150 °C junction), identical pinout and firmware compatibility | Required for under-hood applications exceeding 125 °C ambient, e.g., engine bay-mounted EPS ECUs | Select when extended junction temperature range is mandated by thermal design or OEM specification |
| SPC564A70L5CEFAY | Single e200z4 core, 2 MB flash, no FlexRay, lower ASIL rating (ASIL B), QFP-176 package | Suitable for cost-sensitive ADAS camera modules or gateway ECUs where FlexRay and dual-core redundancy are unnecessary | Choose for non-safety-critical or ASIL B applications needing higher flash capacity but lower complexity and cost |
Compared with SPC5643LF2MLQ1R, MPC5643LK2MLQ1R offers extended thermal capability without architectural change, while SPC564A70L5CEFAY reduces safety overhead and peripheral count for less demanding automotive domains - enabling trade-offs between certification scope, thermal margin, and BOM cost.
Availability
SPC5643LF2MLQ1R is available at Aetrix Electronics and suitable for electric power steering (EPS), airbag control units, brake-by-wire systems, and hydraulic power steering (EHPS) requiring stable component supply across automotive production lifecycles.
Supply support for SPC5643LF2MLQ1R 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The SPC5643LF2MLQ1R belongs to NXP's SPC56x automotive MCU family, designed specifically for ASIL D–compliant powertrain and chassis control applications requiring deterministic real-time performance, functional safety, and multi-protocol connectivity.
FAQ
What is the maximum junction temperature rating for the SPC5643LF2MLQ1R?
The SPC5643LF2MLQ1R has a maximum junction temperature rating of 150 °C, validated per NXP's MPC5643L datasheet Rev. 10. This allows operation in high-thermal-load automotive environments such as EPS motor housings or transmission control units. The device includes replicated junction temperature sensors monitored by FCCU to trigger thermal shutdown if the limit is exceeded - a mandatory feature for ISO 26262 ASIL D compliance. Thermal derating curves and PCB layout guidance are provided in Section 3.4 of the official datasheet.
Does the SPC5643LF2MLQ1R support pin-compatible migration from earlier MPC56xx devices?
No, the SPC5643LF2MLQ1R is not pin-compatible with prior MPC56xx generations due to its 257-pin MAPBGA footprint and updated signal routing for FlexRay, dual FlexCAN, and enhanced safety monitoring. Migration requires PCB redesign and firmware adaptation to leverage new features like FCCU error reporting, RCCU output checking, and CTU-synchronized ADC triggers. NXP provides migration guides and HAL libraries to ease software transition, but physical compatibility is not supported.
How does the SPC5643LF2MLQ1R implement ASIL D compliance in hardware?
The SPC5643LF2MLQ1R achieves ASIL D compliance through hardware-replicated safety mechanisms: dual e200z4d cores in LockStep mode with cycle-accurate comparison, FCCU for fault collection and escalation, RCCU for output validation, replicated INTC/eDMA/ADC/SWGT, and boot-time MBIST/LBIST. These are not software-configurable features but silicon-enforced blocks documented in the Safety Application Guide for MPC5643L. All safety-critical paths - including clock monitoring, power supply supervision, and memory access - are covered by hardware redundancy and cross-checking logic intrinsic to the SPC5643LF2MLQ1R die.
Can the SPC5643LF2MLQ1R operate without an external crystal oscillator?
Yes, the SPC5643LF2MLQ1R can operate using its internal 16 MHz RC oscillator for initial boot and non-safety-critical functions, but ASIL D operation requires external crystal (4–40 MHz) as the primary clock source. The datasheet mandates crystal-based FMPLL configuration for safety-critical timing domains because the RC oscillator lacks the stability and fault-detection coverage needed for ISO 26262. The internal RC is used only for fast wake-up or fallback modes - never for lockstep execution, FlexRay timing, or ADC sampling clocks in certified applications.
What debug interface does the SPC5643LF2MLQ1R provide, and is it accessible during safety-critical runtime?
The SPC5643LF2MLQ1R provides a Nexus Class 3+ debug interface supporting real-time trace, non-intrusive breakpoints, and memory inspection. However, Nexus access is disabled during ASIL D runtime by hardware fuse settings and FCCU policy - it remains active only in development, pre-boot, or diagnostic modes. Production firmware must disable Nexus before entering safety-critical operation; unauthorized runtime access triggers FCCU fault escalation. Debug capabilities are fully documented in the MPC5643L Reference Manual and require NXP's S32DS toolchain for secure session management.
SPC5643LF2MLQ1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 144-LQFP
- Series:
- MPC56xx Qorivva
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- e200z4
- Core Size:
- 32-Bit Dual-Core
- Speed:
- 120MHz
- Connectivity:
- CANbus, FlexRay, LINbus, SPI, UART/USART
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- -
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 32x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SPC5643LF2MLQ1R FAQ
1.How can I place an order for SPC5643LF2MLQ1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SPC5643LF2MLQ1R 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 SPC5643LF2MLQ1R reliable?
The price and inventory of SPC5643LF2MLQ1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPC5643LF2MLQ1R is usually 5 days.
3.What payment methods are accepted for SPC5643LF2MLQ1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPC5643LF2MLQ1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPC5643LF2MLQ1R?
SPC5643LF2MLQ1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPC5643LF2MLQ1R 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 SPC5643LF2MLQ1R?
For technical support, including SPC5643LF2MLQ1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPC5643LF2MLQ1R requirements.
6.How does Aetrix verify that SPC5643LF2MLQ1R is sourced from the original manufacturer or authorized distributors?
All SPC5643LF2MLQ1R 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 SPC5643LF2MLQ1R meets industry standards.
7.What is the process for return or replacement of SPC5643LF2MLQ1R?
All SPC5643LF2MLQ1R units undergo pre-shipment inspection (PSI). If there is an issue with SPC5643LF2MLQ1R, 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 SPC5643LF2MLQ1R part is unused and in its original packaging.
Return procedure for SPC5643LF2MLQ1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SPC5643LF2MLQ1R Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
