SPC5743RK1MLQ5 - 32-bit 2MB Flash 200MHz Automotive MCU | NXP
MPN: SPC5743RK1MLQ5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.9 | $169.00 |
| 100 | $15.2 | $1,520.00 |
| 500 | $13.8 | $6,900.00 |
| 1,000 | $12.6 | $12,600.00 |
SPC5743RK1MLQ5 Overview
A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripherals on one die. Within the embedded hierarchy, the SPC5743R belongs to NXP's MPC57xx / SPC5 family of Power Architecture MCUs, which sits above simple 8-bit controllers and below multicore application processors, targeting hard real-time control tasks such as engine, transmission, and motor control in powertrain electronic control units (ECUs).
Key features include the dual-issue e200z4 32-bit core architecture providing deterministic real-time execution, 2 MB (2M x 8) of embedded Flash for program storage, 200 MHz core frequency for high control-loop bandwidth, and automotive qualification across the full -40C to +125C temperature range. The 144-LQFP package offers a 0.5 mm pin pitch that is hand-solderable and suitable for mid-complexity PCBs without requiring BGA assembly processes.
Technically, the device derives from the MPC5746R product line described in NXP documentation, which targets industrial and automotive engine and transmission control applications requiring advanced performance, precise timing systems, and functional safety capabilities. The Power Architecture instruction set provides mature toolchain support within NXP's SPC5 studio ecosystem.
Typical applications include gasoline and diesel engine control units, transmission and gearbox controllers, electric motor inverters and traction control, and industrial high-performance real-time control systems where functional safety and timing precision are mandatory.
Design consideration: verify Flash size and peripheral mapping against the MPC574xR family reference manual, since the SPC5743R is one memory-density variant within a pin-compatible family; selecting a larger-density sibling eases future firmware growth without PCB redesign.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-10-18.
Drop-in alternatives for SPC5743RK1MLQ5 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SPC5743RK1MLQ5 (same form factor and footprint) — differing in Flash Memory, Number of Cores, Product Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SPC5744PFK1AMLQ9
✅ Drop-In📋 Reference alternative (not in catalog)
SPC5746BSK1MKU2
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$17.25 / Unit
View Datasheet →SPC5742RK1MLQ5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
SPC5745RK1MLQ5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
SPC5743RK1MLQ6
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
SPC5743RK1MLQ5 Maximum Ratings & Electrical Characteristics
| Core Processor | e200z4 (Power Architecture) |
| Core Size | 32-Bit |
| Number of Cores | Dual-Core |
| Core Frequency | 200 MHz |
| Flash Memory | 2 MB (2M x 8) |
| Package | 144-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| Automotive Qualification | Yes (AEC automotive qual) |
| Product Family | MPC57xx / SPC5 (MPC5746R line) |
| Target Applications | Automotive engine/transmission control, industrial |
| Supplier Device Package | 144-LQFP |
SPC5743RK1MLQ5 144-lqfp Pin Configuration Guide
Pin configuration for SPC5743RK1MLQ5 (144-lqfp package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for SPC5743RK1MLQ5.
Refer to the datasheet for full pin configuration.
Typical Applications
SPC5743RK1MLQ5 is suitable for 6 applications: Engine Control Unit (ECU), Transmission Control Unit (TCU), Electric Traction Inverter and Motor Control, Industrial Real-Time Control Systems, Domain Controllers and Body-High Integration, Functional Safety Powertrain Monitoring.
Engine Control Unit (ECU)
The SPC5743RK1MLQ5 fits gasoline and diesel engine control units because its dual 200 MHz e200z4 cores can partition crankshaft-synchronous injection and ignition control on one core while diagnostics and communication run on the other. The 2 MB Flash accommodates AUTOSAR software, oxygen-sensor trim tables, and knock-control algorithms, and the -40C to +125C automotive qualification covers direct under-hood mounting. In a typical ECU, the MCU drives injector drivers and ignition pre-drivers through its timing subsystems, sampling crank and cam position via eMIOS and ADC triggers. Deterministic Power Architecture execution keeps closed-loop control jitter low; the trade-off versus a smaller S12X-class MCU is cost and power, justified only when cylinder-individual control and OBD-II diagnostics demand the performance headroom.
Recommended
Transmission Control Unit (TCU)
Automatic and dual-clutch transmission controllers are a primary target documented for the MPC574xR family. The SPC5743RK1MLQ5 supplies the deterministic 200 MHz performance needed for shift-solenoid current control at millisecond rates, wheel-speed and turbine-speed decoding, and adaptive shift strategy computation, all within 2 MB of Flash including learn tables. Its automotive -40C to +125C rating suits mounting on the transmission valve body where ambient temperatures peak. The timing subsystems generate precise PWM for pressure-control solenoids while the second core monitors plausibility, supporting functional-safety-oriented architectures. Designers should budget ADC acquisition time for the many pressure and temperature channels; the dual-core architecture allows the monitoring core to run these checks without stealing cycles from the control loop.
Recommended
Electric Traction Inverter and Motor Control
For EV traction inverters, the SPC5743RK1MLQ5 provides two e200z4 cores at 200 MHz: one executes field-oriented control (FOC) at 10-20 kHz PWM update rates while the other handles torque-voting, functional-safety monitoring, and CAN/CAN-FD communication with the vehicle control unit. The 2 MB Flash holds motor parameter maps, flux-weakening tables, and dual-bank OTA bootloader support. The MPC5746R-derived timing subsystems generate center-aligned PWM with dead-time insertion and fault shutdown, critical for SiC or IGBT gate-driver interfaces. Its 125C automotive rating matches inverter-housing environments. Compared with dedicated motor-control DSPs, this device adds ASIL-oriented safety architecture at the cost of slightly lower peak MIPs, which is usually the correct trade-off for traction safety applications.
Recommended
Industrial Real-Time Control Systems
NXP documentation positions the MPC5746R line for industrial applications in addition to automotive, and the SPC5743RK1MLQ5 transfers directly into industrial drives, robotics controllers, and power-conversion equipment needing hard real-time determinism. The dual-core Power Architecture executes control loops with predictable latency, while 2 MB Flash supports protocol stacks such as EtherCAT or PROFINET alongside the control firmware. The -40C to +125C industrial-relevant range permits sealed outdoor enclosures and cabinet mounting near heat sources. The 144-LQFP package's 0.5 mm pitch is manufacturable on standard industrial assembly lines without BGA X-ray inspection, reducing production cost versus BGA-based competitors. Longevity is a further advantage: NXP's automotive lines carry extended availability commitments valued in industrial programs with 10-year lifecycles.
Recommended
Domain Controllers and Body-High Integration
As vehicle architectures consolidate, the SPC5743RK1MLQ5 serves mid-tier domain controllers that combine real-time actuation with gateway duties - for example chassis-domain nodes managing damper control plus suspension sensors. The dual-core split (control + communication) maps naturally to this consolidation, and 2 MB Flash hosts both the control application and a routing/gateway stack. Multiple FlexCAN-class communication interfaces (per the MPC574xR peripheral set) connect sub-networks without external CAN controllers. The automotive temperature grade and qualification remove component screening questions for 12V-board-net environments. Designers must verify peripheral channel counts against the specific SPC5743R variant datasheet, since the family varies ADC and timer channel allocation between density grades; the LQFP-144 pinout constrains maximum I/O versus BGA siblings.
Recommended
Functional Safety Powertrain Monitoring
The MPC5746R line is documented by NXP as targeting functional safety capabilities, making the SPC5743RK1MLQ5 appropriate for safety mechanisms such as torque-monitoring paths in hybrid powertrains. The dual e200z4 cores support lockstep-style or diverse-redundant software architectures, with one core computing torque demand and the other independently verifying it against a safety monitor. Its 200 MHz performance absorbs the overhead of end-to-end CRC-protected communication and diagnostic polling that ASIL-oriented designs require. The -40C to +125C qualified process and automotive documentation package (safety manuals available through NXP) supports ISO 26262 development flows. Note that achieving a specific ASIL rating depends on the system design - external monitoring ICs and voltage supervisors remain necessary; the MCU is a component, not a certified safety system by itself.
Recommended
Recommended Products Summary
Engineering reference data for SPC5743RK1MLQ5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SPC5744PFK1AMLQ9 | SPC5746BSK1MKU2 | SPC5742RK1MLQ5 |
|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP - same | 144-LQFP (verify variant) | 144-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | Dual e200z4 (Power Architecture), 32-bit | Dual e200z4, 32-bit | Power Architecture multicore | Dual e200z4, 32-bit |
| Automotive Qualification | Yes | Yes | Yes | Yes |
Key Differentiators
- Dual-core 200 MHz real-time performance (vs MC9S12XEQ384CAG)
- Cost-optimized LQFP packaging (vs SPC5746BSK1MKU2)
- 2 MB Flash on 144-pin footprint (vs SPC5742RK1MLQ5)
Design Notes
The 144-LQFP (20x20 mm, 0.5 mm pitch) requires attention to fanout on four-layer or better PCBs. Plan power/ground via stitching under the die center per the datasheet thermal pad guidance, and route the JTAG/debug pins (typically 5 signals plus reset) to a header before final layout - automotive programs almost always require boundary scan access. Follow NXP MPC574xR hardware design guidelines for crystal layout: keep the oscillator loop compact, guard with ground, and place load capacitors within 2 mm of the pins.
Automotive 12V board nets experience load-dump transients; the SPC5743RK1MLQ5 requires a regulated core supply per the MPC574xR power architecture (multiple internal rails supplied via on-chip or external regulators depending on variant). Confirm the exact supply configuration for this ordering variant in the datasheet power chapter - do not assume BGA variant designs port directly. Use 100 nF ceramic decoupling on every supply pin pair plus bulk capacitance near the package, and verify power-up sequencing against the reference manual before layout freeze.
SPC5 device MPNs encode package, temperature, and speed grade - substituting an MLQ6 for an MLQ5 changes the speed grade and may affect timing margins in existing timing-tested designs. Firmware written for one MPC574xR density variant will not boot unchanged on another if the Flash partition map differs; regenerate the linker file and Flash driver configuration in SPC5 Studio when migrating. Also verify SIUL pad multiplexing assignments pin-by-pin against the datasheet, since family members differ in peripheral-to-pin mapping even within the same package.
Compliance Information
Automotive qualification (-40C to +125C) confirmed from NXP product data. RoHS/REACH/lead-free status must be confirmed on the NXP product page Environmental Quality section for the current shipping revision; not stated in the provided web data.
