S9S12DT12F1MFUE - 128K Flash Automotive Microcontroller | NXP
MPN: S9S12DT12F1MFUE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.82 | $17.82 |
| 10 | $17.82 | $178.20 |
| 100 | $17.82 | $1,782.00 |
| 500 | $17.82 | $8,910.00 |
| 1,000 | $17.82 | $17,820.00 |
S9S12DT12F1MFUE Overview
What is an automotive embedded microcontroller? It is a semiconductor device that combines a processor core, nonvolatile program memory, data memory, and peripheral interfaces into one integrated control component. Automotive-qualified versions are selected for embedded systems that execute deterministic control, communication, sensing, or power-management tasks. The S9S12DT12F1MFUE belongs to this broader embedded -> microcontroller -> automotive MCU hierarchy.
The verified product record provides three principal commercial and identity facts: 128K flash, automotive classification, and MARLIN2 identification. The listing also identifies Freescale Semiconductor as the original manufacturer name, while current distributor records associate the part with NXP Semiconductors. Its reported package is PQFP in one distributor result, but the exact package dimensions, terminal count, and exposed-pad arrangement were not provided. Confirm the package drawing and pin map against the official datasheet before PCB release or substitution.
Verified marketplace information shows a reference price of $17.82 with 1,200 units in stock in one listing, while another distributor listing reports 1.820 units in stock from $16.70. These observations are source-specific and time-sensitive rather than guaranteed quotations. As of 2026-10-20, use them as purchasing reference points and request a live quote for production quantities, date-code requirements, traceability, and delivery scheduling.
The part is best evaluated for legacy automotive and industrial embedded platforms only after the complete datasheet confirms CPU type, Flash organization, SRAM, peripherals, operating voltage, temperature grade, clocking, package dimensions, qualification status, and software-device mapping. Firmware migration also depends on exact peripheral compatibility, pin multiplexing, interrupt vectors, and memory-map equivalence. This evidence-first approach avoids treating a generic functional substitute as a safe production drop-in.
The principal purchasing benefit is targeted availability for the exact S9S12DT12F1MFUE orderable code. The principal risk is assuming that similar S9S12 devices are interchangeable without verifying the DT part family, F1 temperature or qualification coding, MFUE package suffix, pin compatibility, and embedded software support.
This page consolidates verified distributor inventory, pricing, source links, and unresolved qualification data into one procurement record. It intentionally separates known values from missing technical evidence and does not claim a drop-in replacement unless package, pinout, memory, peripherals, and qualification are all verified.
Drop-in alternatives for S9S12DT12F1MFUE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with S9S12DT12F1MFUE (same form factor and footprint).
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Request AlternativesS9S12DT12F1MFUE Maximum Ratings & Electrical Characteristics
| Device Type | Embedded - Microcontrollers |
| Manufacturer Lineage | Freescale Semiconductor |
| Current Brand Association | NXP Semiconductors |
| Program Memory | 128K Flash |
| Automotive Classification | AUTO |
| Device Description | 128K FLASH AUTO MARLIN2 |
| Reported Package Type | PQFP |
| Mounting Type | Surface Mount |
| Reference Price | $17.82 |
| Alternative Listed Starting Price | $16.70 |
S9S12DT12F1MFUE pqfp Pin Configuration Guide
Pin configuration for S9S12DT12F1MFUE (pqfp package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for S9S12DT12F1MFUE.
Refer to the datasheet for full pin configuration.
Typical Applications
S9S12DT12F1MFUE is suitable for 6 applications: Legacy Automotive Embedded Control, Powertrain supervisory Controller, Body and Chassis Control Module, Industrial Control Retrofit, Engine or Motor Control Module, Communication Gateway Retrofit.
Legacy Automotive Embedded Control
The S9S12DT12F1MFUE fits a legacy automotive embedded-control socket when the existing platform already requires the exact 128K Flash AUTO MARLIN2 orderable code. Its verified automotive classification supports use in that sourcing context, but it does not by itself establish AEC-Q100 status or a production temperature grade. Integration therefore begins with an exact-MPN datasheet review, followed by schematic, footprint, firmware, and qualification verification. The benefit is avoiding an unnecessary hardware and software migration in a mature platform; the tradeoff is reliance on legacy-device lifecycle and supply-chain planning.
Recommended
Powertrain supervisory Controller
The target may be considered for a supervisory control function in a legacy vehicle platform because the verified record identifies 128K Flash and an automotive MCU category. The record does not disclose CPU performance, RAM, input voltage, temperature limits, communication interfaces, or diagnostic coverage, so no claim can be made about real-time complexity or safety suitability. Engineers should match the exact peripheral set and qualification documents against the existing powertrain design, then measure wake-up, task timing, fault handling, and supply disturbances. The benefit is reuse of a known platform; the risk is assuming MARLIN2 identity alone proves functional adequacy.
Recommended
Body and Chassis Control Module
S9S12DT12F1MFUE is applicable as a candidate for an existing body or chassis control module when its 128K Flash and embedded-controller identity match the original design constraints. Because the verified data omits RAM, I/O mapping, timers, communication ports, diagnostic interfaces, and temperature grade, it cannot yet support a design sign-off. Review the complete pinout and package drawing, reproduce the established clock and peripheral initialization, and validate debouncing, fault detection, and bus timing. Exact-part continuity reduces certification churn, while missing public specifications create a significant qualification dependency.
Recommended
Industrial Control Retrofit
The exact S9S12DT12F1MFUE can support an industrial-control retrofit when the goal is to preserve the original controller board and firmware rather than redesign around a newer MCU. The verified 128K Flash figure provides the only firm capacity point, and no verified CPU, RAM, I/O, timing, or voltage details are supplied. Before retrofitting, map the complete pinout, confirm operating voltage, verify reset and clock behavior, and test every connected actuator or sensor input. The benefit is minimizing board changes; the tradeoff is accepting a legacy MCU whose future supply and qualification roadmap remain unconfirmed.
Recommended
Engine or Motor Control Module
The S9S12DT12F1MFUE may be considered for an existing engine- or motor-related controller when software and hardware were already designed around this exact identifier. Its verified 128K Flash and automotive classification are relevant, but the supplied evidence does not show PWM resolution, capture channels, ADC performance, control-loop support, RAM, clock speed, or operating-temperature limits. Validate timing-critical routines and analog channels against the datasheet, and verify safe-state behavior during reset and fault conditions. The benefit is retaining qualified control software; the risk is insufficient evidence for new safety-critical development.
Recommended
Communication Gateway Retrofit
The target can serve as the MCU in a legacy communication gateway when an installed board requires its exact embedded identity and 128K Flash organization. However, the verified listings do not identify CAN, LIN, Ethernet, serial, or USB resources, so gateway suitability cannot be inferred from the generic microcontroller category. Engineers should inventory the gateway's physical interfaces, protocol timing, connector routing, and pin multiplexing against the official datasheet, then perform bus compliance and fault-injection testing. Exact-part continuity can simplify maintenance; missing interface and timing data prevents unqualified use in a new gateway design.
Recommended
Recommended Products Summary
Engineering reference data for S9S12DT12F1MFUE — comparison, design guidance, and compliance information.
Selection Guide
Design Notes
Do not treat another S9S12 or MC9S12 identifier as a substitute based on family naming or Flash-class marketing. The verified evidence confirms 128K Flash, AUTO classification, and MARLIN2 only for the target. Before releasing a cross-reference, compare the official package drawing, complete terminal map, Flash organization, RAM, voltage range, temperature grade, clocking, peripherals, reset behavior, and qualification. A correct BOM substitution must also preserve startup code, linker memory regions, interrupts, and driver expectations.
Use the official S9S12DT12F1MFUE package drawing to establish the PCB footprint; the supplied sources identify PQFP but do not provide terminal count, body dimensions, lead pitch, pin 1 orientation, or exposed-pad requirements. Compare land patterns mechanically and electrically, place decoupling and support components according to the manufacturer guidance once verified, and inspect the first article for bridging and pin orientation. Never generate a footprint from the generic name PQFP alone.
Validate the power architecture before board bring-up because the supplied data does not state operating voltage, I/O thresholds, reset thresholds, or current consumption. Confirm the regulator tolerance, decoupling network, startup sequencing, and brownout behavior from the complete datasheet. Programmable protection, watchdog settings, and external clock conditions must match the legacy board requirements. Record startup current and rail tolerances during engineering validation rather than relying on an unverified generic S12 assumption.
Compliance Information
The listings identify the part as AUTO, but the supplied data does not explicitly state AEC-Q100 qualification, RoHS, REACH, lead-free, halogen-free, or conflict-minerals compliance. These fields remain unknown except that AEC-Q100 is not explicitly qualified in the provided evidence.
