NXP Semiconductors MM912F634DV1AER2

Overview

MM912F634DV1AER2 from NXP Semiconductors (formerly Freescale) is an integrated S12-based relay driver with LIN 2.1 physical layer, combining an HCS12 MCU (32 kB Flash, 2 kB RAM, 16-bit CPU) and SMARTMOS analog control IC in a single 48-pin LQFP-EP package. It delivers protected high-side (2×) and low-side (2×) outputs, 10-bit 15-channel ADC, LIN transceiver, and wake-up-capable HV inputs for automotive body control modules.

For engineers reviewing the MM912F634DV1AER2 datasheet, MM912F634DV1AER2 pinout, MM912F634DV1AER2 application, or MM912F634DV1AER2 equivalent, key selection criteria include its integrated LIN PHY + MCU architecture, dual high/low-side driver protection, cyclic sense low-power operation, and automotive-grade -40°C to 105°C temperature range with reverse-battery protection.

Technical Context

The MM912F634DV1AER2 implements a die-to-die (D2D) interface between its HCS12 MCU die and SMARTMOS analog die, enabling transparent memory-mapped access to analog peripherals including current sense, voltage sense, and high-voltage wake-up inputs. Its LIN 2.1 physical layer integrates an SCI interface and supports bus speeds up to 20 kbps.

It features two independent watchdogs (COP and window), on-chip 2.5 V and 5.0 V regulators, Hall sensor supply (HSUP, 18 V), and thermal shutdown with chip temperature sensing. The analog die includes six wake-up inputs (L0–L5), selectable gain current sense (ISENSEH/ISENSEL), and reverse-battery protected VS1/VS2 power rails.

Key Specifications

Pinout & Package

MM912F634DV1AER2 uses a 48-pin LQFP-EP (exposed pad) package per Freescale document 98ASA00173D. The exposed pad must be connected to ground for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar relay driver with LIN applications.

Compared with MC33816 and SPC560B50L5, MM912F634DV1AER2 provides higher integration density-combining MCU, LIN PHY, protected drivers, ADC, and wake-up logic in one package-reducing board space, component count, and qualification effort for entry-level automotive body nodes.

Availability

MM912F634DV1AER2 is available at Aetrix Electronics and suitable for automotive body control modules, smart junction boxes, seat control units, and roof modules requiring stable component supply across extended temperature and harsh electrical environments.

Supply support for MM912F634DV1AER2 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, IoT, and communication infrastructure solutions, with deep heritage in automotive microcontrollers and analog power systems.

The MM912F634 series belongs to NXP's integrated automotive system basis chips (SBCs) product line, designed specifically for cost-sensitive, LIN-connected body electronics applications requiring high reliability, integrated protection, and minimal external components.

FAQ

What is the operating temperature range for MM912F634DV1AER2?

MM912F634DV1AER2 is rated for -40°C to +105°C ambient operating temperature, qualified per AEC-Q100 Grade 2 requirements. This range supports under-hood and cabin-mounted automotive applications where thermal stability and long-term reliability are critical. The internal chip temperature sensor enables real-time thermal monitoring within the MM912F634DV1AER2 die.

Does MM912F634DV1AER2 include an integrated LIN transceiver?

Yes, MM912F634DV1AER2 integrates a full LIN 2.1 physical layer transceiver on-die, compliant with ISO 17987-4. The LIN pin supports single-wire bus communication at up to 20 kbps, includes built-in ESD protection, and interfaces directly with the on-chip SCI module-eliminating the need for an external LIN transceiver IC in the MM912F634DV1AER2 design.

How many high-side and low-side drivers does MM912F634DV1AER2 provide?

MM912F634DV1AER2 provides two protected high-side drivers (HS1 and HS2) and two protected low-side drivers (LS1 and LS2). Each driver includes short-circuit protection, thermal shutdown, and active clamp circuitry. HS1/HS2 are powered from VS2 (12 V rail), while LS1/LS2 reference PGND and support PWM control for precise load management in the MM912F634DV1AER2.

What analog input capabilities does MM912F634DV1AER2 support?

MM912F634DV1AER2 features a 10-bit, 15-channel ADC with flexible input scaling: 0–2.5 V (ADC2p5 reference), 0–5 V, and 0–18 V ranges via internal dividers. Six high-voltage inputs (L0–L5) serve dual roles as wake-up sources and analog channels (AD3–AD8). VSENSE provides dedicated battery voltage sensing with reverse-battery protection-key for diagnostics in the MM912F634DV1AER2.

Is MM912F634DV1AER2 pin-compatible with other variants in the MM912F634 family?

MM912F634DV1AER2 (AE package, Analog Option 1) shares the same 48-pin LQFP-EP footprint and pinout with MM912F634DV2AE, but differs in analog functionality: DV1AE includes current sense (ISENSEH/ISENSEL) and six wake-up inputs (L0–L5), while DV2AE omits current sense and supports only L0–L3. No PCB changes are required when migrating between these two MM912F634DV1AER2-compatible variants.