NXP Semiconductors MM908E625ACPEK

Overview

MM908E625ACPEK from NXP (formerly Freescale) is an integrated automotive system-on-chip combining a HC08 MCU core, four protected half-bridge drivers, one high-side switch, LIN physical layer, 5.0 V voltage regulator, autonomous watchdog with cyclic wake-up, and three Hall-effect sensor inputs. It delivers motor control for mirror, door lock, and light-leveling systems in 12 V automotive body electronics.

For engineers reviewing the MM908E625ACPEK datasheet, MM908E625ACPEK pinout, MM908E625ACPEK application, or MM908E625ACPEK equivalent, this page provides verified functional identity, validated 54-pin SOICW-EP package mapping, confirmed H-Bridge + HS + LIN + MCU integration, real-world diagnostic features (BEMF, current recopy), and two field-validated alternative parts for automotive body control design.

Technical Context

The MM908E625ACPEK integrates two dies in one 54-pin SOICW-EP package: an M68HC908EY16 MCU die (16 KB flash, 512 B RAM, 10-bit ADC, ESCI, SPI, ICG) and a SMARTMOS analog die providing power switching, protection, and LIN transceivers. Communication between dies occurs via internal SPI and shared interrupt/reset lines (RST_A/IRQ_A).

Its analog die implements four half-bridges (HB1–HB4) with programmable low-side current limiting (5 levels: 55–880 mA), high-side over-current shutdown (3.9–7.0 A), BEMF detection thresholds (−60 mV to −30 V), and LIN bus compliance per ISO 17987-2 at 20 kBaud with slew-rate control. The autonomous watchdog operates independently of the MCU using a dedicated 40 μs oscillator.

Key Specifications

Pinout & Package

MM908E625ACPEK uses a 54-pin SOICW-EP (wide-body SOIC with exposed thermal pad) package. The exposed pad (EP) must be soldered to PCB ground plane for thermal management and EMI reduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33883 and TL812F, MM908E625ACPEK uniquely combines MCU, LIN PHY, four half-bridges, Hall inputs, and BEMF detection in one package - enabling full node autonomy in space-constrained automotive body modules without external components.

Availability

MM908E625ACPEK is available at Aetrix Electronics and suitable for automotive mirror control, door lock actuation, and headlight leveling systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MM908E625ACPEK 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 focused on automotive, industrial, and IoT applications, delivering secure, energy-efficient, and highly integrated solutions.

The MM908E625ACPEK belongs to NXP's SMARTMOS automotive system-on-chip family, designed specifically for cost-optimized, space-constrained body electronics requiring integrated motor control, LIN communication, and embedded intelligence.

FAQ

What is the primary function of the MM908E625ACPEK in automotive systems?

The MM908E625ACPEK serves as a fully integrated automotive motor control SoC, combining an HC08 MCU, four half-bridge drivers, one high-side switch, LIN physical layer, 5 V regulator, and Hall sensor interfaces. It enables complete control of power mirrors, door locks, and headlight leveling systems via LIN bus - eliminating need for external transceivers, LDOs, or discrete drivers in the MM908E625ACPEK design.

Does the MM908E625ACPEK include built-in protection features for its power outputs?

Yes, the MM908E625ACPEK includes comprehensive protection: each half-bridge (HB1–HB4) and high-side (HS) output features over-current shutdown (4.0–7.5 A thresholds), thermal shutdown, and short-circuit protection. Low-side current limitation is programmable across five levels (55–880 mA), and BEMF detection provides stall monitoring - all implemented in hardware on the analog die without MCU overhead.

How does the MM908E625ACPEK support LIN communication without an external transceiver?

The MM908E625ACPEK integrates a full LIN 2.2a physical layer, including TXD, RXD, and LIN pins. The LIN pin connects directly to the vehicle bus; internal circuitry handles dominant/recessive state generation, slew rate control (20 kBaud default), and bus fault detection. This eliminates external transceivers - reducing BOM, PCB area, and validation effort in the MM908E625ACPEK implementation.

Can the MM908E625ACPEK drive stepper motors, and what features enable this capability?

Yes, the MM908E625ACPEK supports bipolar stepper motor control using HB1–HB4. Key enablers include BEMF output (connected to PTD0) for stall detection, programmable low-side current limits for torque control, Hall-effect inputs (H1–H3) for position feedback, and dedicated BEMF counter in the MCU. These features allow closed-loop microstepping without external comparators or current sense ICs in MM908E625ACPEK-based designs.

What is the role of the FGEN pin on the MM908E625ACPEK, and how is it used?

The FGEN pin on the MM908E625ACPEK accepts a square-wave input (0.1–20 kHz) whose period sets the timing for half-bridge current limitation and high-side inrush current limiting. It is not a PWM duty-cycle input - the device internally generates the required PWM waveform. This allows precise, externally synchronized current limiting without MCU timer resource usage in MM908E625ACPEK motor control firmware.