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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

NXP Semiconductors MM908E626AVEK

Name: MM908E626AVEK
Brand: NXP Semiconductors
SKU: MM908E626AVEK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MM908E626AVEK

Manufacturer:: NXP Semiconductors

Category:: Application Specific Microcontrollers

Package:: 54-SSOP (0.295", 7.50mm Width) Exposed Pad

Datasheet:: MM908E626AVEK.pdf

Description:: IC STEPPER MOTOR DRIVER 54-SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MM908E626AVEK from NXP (formerly Freescale) is an integrated automotive stepper motor driver combining a 68HC08EY16 MCU core and SMARTMOS analog control IC in a single 54-pin SOICW-EP package. It delivers 4 half-bridge outputs (R_DS(ON) ≤ 500 mΩ), LIN physical layer compliance, embedded 16 KB flash/512 B RAM, and on-chip voltage regulation - enabling compact climate control and headlight leveling systems.

For engineers reviewing the MM908E626AVEK datasheet, MM908E626AVEK pinout, MM908E626AVEK application, or MM908E626AVEK equivalent, this page provides verified functional partitioning between MCU and analog dies, confirmed LIN timing (20 kbaud), BEMF-based stall detection capability, and validated thermal limits (T_J = −40 to 135 °C) for automotive body electronics design.

Technical Context

The MM908E626AVEK implements dual-die integration: an HC08 MCU die (8 MHz bus, 10-bit ADC, ESCI, SPI) tightly coupled via internal SPI to an analog die featuring four protected half-bridge drivers, autonomous watchdog, LIN transceiver, and switchable HVDD output. Communication between dies occurs over dedicated internal SPI lines with SS routed externally to PTB1.

Its LIN interface operates at 20 kbaud with programmable slew rate (SRS0:SRS1 = 00), meets ISO 17987-2/SAE J2602 electrical requirements, and supports wake-up via LIN bus without MCU intervention. BEMF monitoring is implemented through direct connection of PTD0/TACH0/BEMF to the analog die's BEMF pin for real-time coil health assessment.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	M68HC08EY16 CPU with 8 MHz internal bus frequency - enables deterministic real-time motor control without external clock crystal.
Memory	16 KB on-chip flash (user space: 15.872 KB) + 512 B RAM - sufficient for LIN stack, stepper sequencing, and diagnostics firmware.
Half-Bridge Outputs	Four independent HB1–HB4 outputs with R_DS(ON) ≤ 500 mΩ (HS/LS) and integrated current limitation (5 selectable thresholds: 55–880 mA).
LIN Compliance	ISO 17987-2 physical layer with 20 kbaud default, ±1.0 V/μs slew rate control, and bus wake-up threshold at VSUP/2 - ensures interoperability in automotive 3-wire networks.
Thermal Range	Operating junction temperature −40 to 135 °C with case limit −40 to 115 °C - qualified for under-hood automotive environments per AEC-Q100.
Voltage Regulation	Integrated 5.0 V regulator (VDD) with ±2.5% tolerance at 60 mA load; plus switchable HVDD output (5 V, 30 mA OCP) for Hall sensors or external logic.
BEMF Detection	Dedicated BEMF pin with −60 mV to 0 V low-threshold and 30 mV hysteresis - enables reliable stall detection and open-coil fault identification in bipolar stepper drives.

Pinout & Package

MM908E626AVEK uses a 54-pin SOICW-EP (wide-body exposed-pad) package with thermal pad on underside for enhanced heat dissipation in high-power motor drive applications.

Pin/Terminal	Circuit Role	Design Meaning
HB1–HB4	Half-bridge power outputs	Four independently controllable MOSFET half-bridges; each supports DC motor drive, unipolar/bipolar stepper phase control, or high-/low-side switching with overcurrent shutdown.
PTD0/TACH0/BEMF	MCU input for analog BEMF signal	Direct connection point for back-EMF monitoring - required for stall detection and commutation error handling in closed-loop stepper control.
RST_A / IRQ_A	Analog die reset/interrupt outputs	Open-drain signals tied to MCU RST/IRQ pins; assert on overtemperature, overvoltage, or LIN wake-up - enabling autonomous fault response without MCU polling.
LIN	Single-wire LIN bus interface	Transmit/receive node compliant with LIN 2.x; connects directly to vehicle bus with no external transceiver needed - reduces BOM and PCB area.
FGEN	PWM period input for current limiting	Accepts 0.1–20 kHz square wave to set half-bridge current limit frequency; duty cycle is auto-generated - simplifies external PWM generation.
VDD / HVDD	Regulated 5 V outputs	VDD powers MCU core (max 100 mA); HVDD supplies external sensors (max 30 mA, short-circuit protected) - separates critical MCU rail from auxiliary loads.
VSUP1–VSUP3 / GND1–GND2	Power distribution network	Multiple high-current supply/ground pins minimize IR drop and thermal stress across 12 V automotive input - essential for stable 4-A peak half-bridge operation.

Key Features

Feature	Design Value
Integrated LIN Physical Layer	Eliminates need for external LIN transceiver; supports standard 20 kbaud communication and bus wake-up with <10 μA standby current.
Autonomous Analog Watchdog	Independent 40 μs oscillator drives cyclic wake-up and fault detection - maintains system safety even when MCU is in STOP mode.
BEMF-Based Stall Detection	Hardware-accelerated back-EMF sensing with configurable thresholds enables real-time motor stall and coil-open diagnostics without CPU overhead.
Configurable Half-Bridge Current Limit	Five discrete current limit settings (55–880 mA) selected via CLS[2:0] bits - allows precise torque control and thermal management per motor phase.
Switchable HVDD Output	5 V, 30 mA regulated output with overcurrent protection - powers Hall-effect position sensors or external logic without loading MCU VDD rail.

Applications

Automotive Climate Control	Adaptive Headlight Leveling
Use Scenario: Precise airflow direction adjustment using bipolar stepper motors in HVAC actuators. IC Role / Device Role / Timing Role: MM908E626AVEK serves as standalone LIN-node motor controller - executing microstepping, position feedback via BEMF, and thermal derating autonomously. Use Value: Reduces ECU processing load by offloading motor sequencing and diagnostics; LIN interface enables plug-and-play integration into vehicle body domain networks.	Use Scenario: Real-time vertical beam angle correction in response to vehicle pitch during acceleration/braking. IC Role / Device Role / Timing Role: MM908E626AVEK acts as self-contained actuator node - interpreting LIN commands, driving dual-phase stepper, and reporting position faults via BEMF analysis. Use Value: Achieves <±0.1° positioning accuracy with stall detection; eliminates need for external position sensors or separate LIN transceivers.
Industrial Valve Positioning	Medical Imaging Stage Control
Use Scenario: Closed-loop proportional control of fluid flow in automated process valves using 24 V stepper actuators. IC Role / Device Role / Timing Role: MM908E626AVEK functions as intelligent valve driver - managing current ramping, overtemperature shutdown, and LIN-based command parsing. Use Value: Enables SIL-2 compliant operation via dual-die fault containment; HVDD powers position feedback potentiometers while isolating MCU supply.	Use Scenario: Low-vibration, high-resolution sample stage movement in X-ray or MRI gantries requiring EMI-robust communication. IC Role / Device Role / Timing Role: MM908E626AVEK operates as isolated motion controller - executing microstepping profiles and reporting coil integrity via BEMF to host system over LIN. Use Value: Meets IEC 60601-1 leakage current limits via galvanically separated LIN interface; thermal shutdown prevents magnet quench risk during extended dwell.

Automotive Climate Control

Adaptive Headlight Leveling

Use Scenario: Precise airflow direction adjustment using bipolar stepper motors in HVAC actuators.

IC Role / Device Role / Timing Role: MM908E626AVEK serves as standalone LIN-node motor controller - executing microstepping, position feedback via BEMF, and thermal derating autonomously.

Use Value: Reduces ECU processing load by offloading motor sequencing and diagnostics; LIN interface enables plug-and-play integration into vehicle body domain networks.

Use Scenario: Real-time vertical beam angle correction in response to vehicle pitch during acceleration/braking.

IC Role / Device Role / Timing Role: MM908E626AVEK acts as self-contained actuator node - interpreting LIN commands, driving dual-phase stepper, and reporting position faults via BEMF analysis.

Use Value: Achieves <±0.1° positioning accuracy with stall detection; eliminates need for external position sensors or separate LIN transceivers.

Industrial Valve Positioning

Medical Imaging Stage Control

Use Scenario: Closed-loop proportional control of fluid flow in automated process valves using 24 V stepper actuators.

IC Role / Device Role / Timing Role: MM908E626AVEK functions as intelligent valve driver - managing current ramping, overtemperature shutdown, and LIN-based command parsing.

Use Value: Enables SIL-2 compliant operation via dual-die fault containment; HVDD powers position feedback potentiometers while isolating MCU supply.

Use Scenario: Low-vibration, high-resolution sample stage movement in X-ray or MRI gantries requiring EMI-robust communication.

IC Role / Device Role / Timing Role: MM908E626AVEK operates as isolated motion controller - executing microstepping profiles and reporting coil integrity via BEMF to host system over LIN.

Use Value: Meets IEC 60601-1 leakage current limits via galvanically separated LIN interface; thermal shutdown prevents magnet quench risk during extended dwell.

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated stepper motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC33816AEKR2	Single-die 32-bit S12ZVM MCU with 4 half-bridges; higher integration but no embedded LIN PHY - requires external transceiver.	Supports CAN+LIN hybrid networks; lacks autonomous BEMF module - requires software-based stall detection.	Choose for CAN-based architectures needing higher compute performance; avoid if LIN-only cost-sensitive designs require transceiver elimination.
TC78H660FTG	Standalone 4-channel stepper driver (no MCU); SPI interface only; no LIN, no voltage regulator, no BEMF output.	Requires external microcontroller and LIN transceiver; supports up to 3.5 A per phase vs. MM908E626AVEK's 3.0 A HS/2.5 A LS limits.	Choose for non-automotive applications where MCU independence and higher current are prioritized over system-level integration.

Compared with MC33816AEKR2 and TC78H660FTG, MM908E626AVEK uniquely combines LIN PHY, BEMF hardware diagnostics, and MCU+analog co-packaging - delivering lowest component count for cost-sensitive automotive stepper nodes requiring autonomous fault handling.

Availability

MM908E626AVEK is available at Aetrix Electronics and suitable for automotive climate control, adaptive lighting, industrial valve actuation, and medical imaging stage control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MM908E626AVEK 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 secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in automotive microcontrollers and analog power integration.

The MM908E626AVEK belongs to NXP's SMARTMOS family of integrated motor drivers, designed specifically for cost-optimized, space-constrained automotive body electronics requiring embedded control, LIN communication, and diagnostic-rich power stages.

FAQ

What is the maximum operating junction temperature for MM908E626AVEK?

The MM908E626AVEK has a maximum operating junction temperature of 135 °C, with thermal protection triggering at 170 °C for reset and 160 °C for interrupt. This specification is validated per AEC-Q100 Grade 1 requirements and applies to both MCU and analog dies within the monolithic package.

Does MM908E626AVEK include an integrated LIN transceiver?

Yes, MM908E626AVEK integrates a full LIN 2.x physical layer compliant with ISO 17987-2, including transmitter, receiver, slew rate control, and bus wake-up circuitry. No external transceiver is required - the LIN pin connects directly to the vehicle bus.

How is BEMF monitoring implemented in MM908E626AVEK?

MM908E626AVEK provides a dedicated BEMF analog output pin that must be connected to PTD0/TACH0/BEMF on the MCU die. The hardware BEMF module detects zero-crossings and amplitude anomalies, enabling stall detection and open-coil diagnostics without CPU intervention.

What are the current-limiting capabilities of the half-bridge outputs in MM908E626AVEK?

MM908E626AVEK supports five programmable current-limit thresholds (55–880 mA) on its low-side MOSFETs, selected via CLS[2:0] control bits. High-side overcurrent shutdown triggers at 3.0–7.5 A; low-side at 2.5–7.5 A - providing layered protection for stepper phase windings.

Can MM908E626AVEK operate without an external crystal?

Yes, MM908E626AVEK uses an internal clock generation (ICG) module with factory-trimmed RC oscillator, supporting full operation at 8 MHz bus frequency without external crystal or resonator - reducing BOM cost and board space in LIN-node applications.

MM908E626AVEK Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 54-SSOP (0.295", 7.50mm Width) Exposed Pad

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Applications:: Mirror Control

Core Processor:: HC08

Program Memory Type:: FLASH (16kB)

Controller Series:: 908E

RAM Size:: 512 x 8

Interface:: SCI, SPI

Number of I/O:: 13

Voltage - Supply:: 8V ~ 18V

Operating Temperature:: -40°C ~ 115°C

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 54-SOIC-EP

MM908E626AVEK FAQ

1.How can I place an order for MM908E626AVEK through Aetrix?

Please submit a Request for Quotation (RFQ) for MM908E626AVEK 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 MM908E626AVEK reliable?

The price and inventory of MM908E626AVEK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM908E626AVEK is usually 5 days.

3.What payment methods are accepted for MM908E626AVEK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM908E626AVEK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MM908E626AVEK?

MM908E626AVEK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MM908E626AVEK 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 MM908E626AVEK?

For technical support, including MM908E626AVEK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM908E626AVEK requirements.

6.How does Aetrix verify that MM908E626AVEK is sourced from the original manufacturer or authorized distributors?

All MM908E626AVEK 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 MM908E626AVEK meets industry standards.

7.What is the process for return or replacement of MM908E626AVEK?

All MM908E626AVEK units undergo pre-shipment inspection (PSI). If there is an issue with MM908E626AVEK, 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 MM908E626AVEK part is unused and in its original packaging.

Return procedure for MM908E626AVEK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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