NXP Semiconductors SPC5745BBK1ACMH2

Overview

SPC5745BBK1ACMH2 from NXP Semiconductors is a dual-core Power Architecture® automotive microcontroller featuring an e200z4 CPU (160 MHz) and e200z2 CPU (80 MHz), 2 MB on-chip flash memory, 256 KB SRAM, and end-to-end ECC protection across buses and memories. 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 requiring ASIL-B functional safety compliance.

For engineers reviewing the SPC5745BBK1ACMH2 datasheet, SPC5745BBK1ACMH2 pinout, SPC5745BBK1ACMH2 application, or SPC5745BBK1ACMH2 equivalent, this page delivers verified technical context, validated pin assignments for the 256-pin MAPBGA package, real-world use cases in powertrain and vehicle networking, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The SPC5745BBK1ACMH2 implements a crossbar switch architecture enabling concurrent access to flash, SRAM, and peripherals by multiple bus masters including dual e200 cores and eDMA. Its memory subsystem includes 2 MB flash with triple-port controller and RWW capability, plus 256 KB SRAM distributed across three ports with SMPU-enforced region-based protection (32 descriptors, 16-byte granularity).

Timing and safety infrastructure comprises FMPLL with frequency modulation, RTC, CMU clock monitoring, FCCU fault collection, HSMv2 security module, and ISO 26262 ASIL-B-certifiable subsystems including SWT, PIT, STM, and eMIOS - all operating under dual-voltage domains (1.2–1.32 V core / 3.3–5.5 V I/O) with integrated voltage regulation and LVD/HVD supervision.

Key Specifications

Pinout & Package

SPC5745BBK1ACMH2 is housed in a 256-ball MAPBGA (package code MJ), 15 mm × 15 mm, 0.8 mm pitch, RoHS-compliant, with thermal pad and standard JEDEC moisture sensitivity level (MSL3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SPC5745BBK1ACMH2, MPC5746C offers expanded memory and peripheral count for scalable domain control, while SPC5744BK0MLU2 reduces cost and complexity for entry-level automotive nodes - neither is pin-compatible, requiring layout changes and firmware adaptation.

Availability

SPC5745BBK1ACMH2 is available at Aetrix Electronics and suitable for engine control units, chassis domain controllers, vehicle gateway modules, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for SPC5745BBK1ACMH2 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 embedded processing.

The SPC5745BBK1ACMH2 belongs to NXP's SPC57 family of Power Architecture® automotive MCUs, designed specifically for ASIL-B powertrain and chassis control applications demanding high reliability, real-time performance, and integrated safety mechanisms.

FAQ

What is the maximum operating frequency of the SPC5745BBK1ACMH2 e200z4 core?

The SPC5745BBK1ACMH2 e200z4 core operates at a maximum frequency of 160 MHz, as confirmed in the MPC5746C family datasheet Table 1 and supported by FMPLL configuration with FXOSC input. This frequency is achievable across the full –40°C to +125°C ambient temperature range under recommended operating conditions (VDD_LV = 1.2–1.32 V, VDD_HV = 3.3 V or 5 V). The SPC5745BBK1ACMH2 maintains timing closure and functional correctness at this rate with its 55 nm process node and optimized crossbar interconnect.

Does the SPC5745BBK1ACMH2 support CAN FD, and how many channels are available?

Yes, the SPC5745BBK1ACMH2 supports CAN FD on all eight FlexCAN3 modules, as explicitly stated in the "Communication" section of the MPC5746C datasheet and confirmed in Table 1 (Family Comparison) where MPC5745B/C variants list "8 with optional CAN FD support (FlexCAN[0:7])". Each channel operates up to 5 Mbps data phase and is independently configurable for protocol version, bit timing, and memory mapping - enabling concurrent high-bandwidth communication with multiple ECUs.

What package type and pin count does the SPC5745BBK1ACMH2 use?

The SPC5745BBK1ACMH2 uses a 256-ball MAPBGA package (package code MJ), measuring 15 mm × 15 mm with 0.8 mm ball pitch. This is verified in the "Family Comparison" section (Table 1) and "Ordering Information" (Section 3.2), where "MJ = 256 MAPBGA" is defined and assigned to MPC5745B/C variants. The package supports 178 GPIOs and includes thermal pad for enhanced power dissipation in automotive under-hood environments.

Is the SPC5745BBK1ACMH2 qualified for automotive applications, and what safety standard does it meet?

Yes, the SPC5745BBK1ACMH2 is automotive-qualified (S-grade) and meets ISO 26262 ASIL-B requirements for functional safety, as documented in the "Functional Safety" section of the MPC5746C datasheet and reinforced in Table 1 ("Safety level: Specific functions ASIL-B certifiable"). Its safety mechanisms include FCCU fault collection, hardware watchdog timers (SWT), memory protection (SMPU), and end-to-end ECC - all validated for use in engine control, transmission, and chassis systems.

What is the flash memory size and organization of the SPC5745BBK1ACMH2?

The SPC5745BBK1ACMH2 contains 2 MB of on-chip flash memory, organized into ten 256 KB blocks (Flash blocks 0–9), with blocks 0–3 always available and blocks 4–5 available per Table 2 (MPC5745B column). It features triple-port flash memory controller, RWW (Read-While-Write) capability, and ECC protection for program/erase cycles - enabling robust in-field firmware updates and EEPROM emulation up to 64 KB as specified in the family comparison tables.