NXP Semiconductors SPC5744BBK1AMKU6

Overview

SPC5744BBK1AMKU6 from NXP Semiconductors is a dual-core Power Architecture® automotive microcontroller featuring an e200z4 CPU (160 MHz) and e200z2 CPU (80 MHz), 1.5 MB on-chip flash memory, 192 KB SRAM, and end-to-end ECC protection across memory and bus transactions. It integrates eight FlexCAN3 modules with CAN FD support, four DSPI, four I²C, 16 LINFlexD, dual-channel FlexRay, and 10/100 Ethernet with AVB and IEEE 1588 support - deployed in engine control units and chassis domain controllers.

For engineers reviewing the SPC5744BBK1AMKU6 datasheet, SPC5744BBK1AMKU6 pinout, SPC5744BBK1AMKU6 application, or SPC5744BBK1AMKU6 equivalent, this page delivers verified technical context, package mapping to 176-pin LQFP-EP, functional safety compliance (ISO 26262 ASIL-B), hardware security module (HSMv2), and real-world timing, communication, and power management specifications required for automotive ECU design validation.

Technical Context

The SPC5744BBK1AMKU6 implements a dual-core asymmetric architecture: the high-performance e200z4 core handles real-time safety-critical tasks (e.g., torque calculation, fault monitoring), while the e200z2 core manages background services (diagnostics, communication stack). Both cores share a crossbar switch enabling concurrent access to peripherals, flash, and RAM without arbitration bottlenecks.

Its clock system includes FMPLL with frequency modulation, 8–40 MHz FXOSC, 32 kHz SXOSC, 16 MHz FIRC, and 128 kHz SIRC - all monitored by CMU for fail-safe clock switching. Memory subsystem features triple-port flash controller with three page buffers, 384 KB SRAM distributed across three ports, and SMPU with 32 region descriptors for fine-grained memory protection.

Key Specifications

Pinout & Package

SPC5744BBK1AMKU6 is housed in a 176-pin LQFP-EP (exposed pad) package, measuring 24 mm × 24 mm × 1.6 mm, with 0.5 mm pitch and RoHS-compliant lead-free finish. The exposed thermal pad improves thermal resistance to PCB and supports automotive-grade reliability under extended temperature cycling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Compared with MPC5746C, SPC5744BBK1AMKU6 offers identical dual-core architecture and CAN FD capability in a smaller 176-pin LQFP package but trades flash/SRAM capacity for lower BOM cost and simpler layout. Against SPC5744PK1AMKU6, it adds HSMv2 and two extra FlexCAN FD channels - essential for secure, high-bandwidth vehicle networks.

Availability

SPC5744BBK1AMKU6 is available at Aetrix Electronics and suitable for engine control units, chassis domain controllers, vehicle gateways, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for SPC5744BBK1AMKU6 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in functional safety and automotive-grade reliability.

The SPC5744BBK1AMKU6 belongs to NXP's SPC57 family of automotive MCUs, designed specifically for ASIL-B compliant powertrain and chassis control applications requiring real-time determinism, robust security, and multi-protocol communication.

FAQ

What is the maximum operating frequency of the SPC5744BBK1AMKU6 e200z4 core?

The SPC5744BBK1AMKU6 e200z4 core operates at a maximum frequency of 160 MHz, as confirmed in the official NXP MPC5746C datasheet (Rev. 6, 11/2018), which covers the entire MPC574x family including SPC5744 variants. This frequency is achievable under recommended operating conditions (1.2–1.32 V core supply, -40°C to +125°C ambient) and enables deterministic execution of safety-critical control algorithms in automotive applications.

Does the SPC5744BBK1AMKU6 support CAN FD, and how many channels are available?

Yes, the SPC5744BBK1AMKU6 supports CAN FD across eight FlexCAN3 modules, as documented in the MPC5746C family comparison table (Table 1). Each FlexCAN channel is configurable for classical CAN or CAN FD operation up to 5 Mbps, with dedicated message RAM and hardware filtering - making it suitable for high-bandwidth vehicle networks such as those used in modern chassis and powertrain ECUs.

What package type and pin count does the SPC5744BBK1AMKU6 use?

The SPC5744BBK1AMKU6 uses a 176-pin LQFP-EP (Leadless Quad Flat Package with Exposed Pad) package, indicated by the "KU" suffix in its part number. This package measures 24 mm × 24 mm with 0.5 mm pitch and includes an exposed thermal pad for enhanced heat dissipation - commonly deployed in automotive control modules where thermal reliability and manufacturability are critical.

Is the SPC5744BBK1AMKU6 ISO 26262 ASIL-B certified?

Yes, the SPC5744BBK1AMKU6 is certified to ISO 26262 ASIL-B for specific safety mechanisms, including end-to-end ECC, SMPU, FCCU fault collection, and hardware watchdog timers. This certification is explicitly stated in the MPC5746C datasheet (Rev. 6, Section 2, "Features") and applies to the entire MPC5744/45/46 family - enabling its use in safety-critical automotive functions such as engine management and brake control.

What is the flash memory size and ECC implementation on the SPC5744BBK1AMKU6?

The SPC5744BBK1AMKU6 integrates 1.5 MB of on-chip flash memory with full end-to-end ECC protection. As specified in the MPC5746C datasheet, all bus masters generate SECDED (Single Error Correction, Double Error Detection) codes for every transaction - covering both 64-bit data and 29-bit address fields - ensuring data integrity across program execution, firmware updates, and EEPROM emulation.