MC9S12DJ256MFUE - 16-Bit 25MHz 256KB MCU | NXP
MPN: MC9S12DJ256MFUE ✗ End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MC9S12DJ256MFUE Overview
A microcontroller is a programmable control component that executes firmware, reads inputs, manages interfaces, and controls external hardware. The HCS12 family combines a 16-bit CISC core with automotive-oriented peripherals and system integration functions. In the broader hierarchy, this device is a microcontroller, embedded processor, semiconductor, and automotive electronic component.
The verified information identifies two asynchronous serial communications interfaces, two 8-channel 10-bit ADCs, an 8-channel PWM, a 20-channel enhanced capture timer, 20 discrete digital I/O lines, and 59 total I/O ports. Its 256 KB Flash memory provides on-chip program storage, while the HCS12 platform supports system resource mapping, clock generation, interrupt control, and bus interfacing. The NXP overview specifically places the MC9S12D family in automotive multiplexing applications.
The MC9S12D architecture uses full 16-bit internal data paths while allowing the external bus to operate in an 8-bit narrow mode for lower-cost memory interfacing. The SIM manages system resource mapping, clock generation, interrupts, and bus interfaces. The supplied distributor records identify the device as a 16-bit HCS12 microcontroller with Flash memory and an 80-pin package; one verified record states 25 MHz maximum frequency, while another third-party summary states 50 MHz, so the manufacturer record is used for the canonical specification and the discrepancy is flagged for validation.
Typical applications include automotive body or multiplexing controllers, distributed control modules, actuator interfaces, sensor acquisition systems, and other embedded control platforms requiring multiple analog channels, serial communication, PWM outputs, and deterministic bus interfacing. The automotive orientation makes the device suitable for designs where peripheral integration and 16-bit control throughput are important.
When designing around this MCU, verify the exact power, temperature, memory-map, oscillator, and peripheral limits in the NXP datasheet before release. Use the package pinout and manufacturer reference documentation for decoupling, clock, reset, analog-input, and external-bus layout. Because the part is NRND, new production designs should confirm lifecycle availability and migration requirements with NXP.
This page consolidates verified manufacturer, distributor, and technical-source information, highlights the device's verified peripheral set and package, and identifies where additional datasheet data or lifecycle confirmation is required. It is intended to support engineering comparison, sourcing, and design review rather than replace the manufacturer documentation.
Drop-in alternatives for MC9S12DJ256MFUE — 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 MC9S12DJ256MFUE (same form factor and footprint) — differing in ADC, Package, Core Architecture, Enhanced Capture Timer, Flash Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DT256MFUE
✅ Drop-In✓ In Stock
$19.2 / Unit
View Datasheet →MC9S12DJ64CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DP512CPVE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S12DT256MPVE
✅ Drop-In✓ In Stock
$14.36 / Unit
View Datasheet →MC9S12DJ256MFUE Maximum Ratings & Electrical Characteristics
| Architecture | 16-bit HCS12 CISC |
| Maximum Clock Frequency | 25 MHz |
| Flash Memory | 256 KB |
| RAM Memory | 12 KB |
| Data Bus | 16-bit |
| External Bus Narrow Mode | 8-bit |
| Supply Voltage | 2.35 V to 2.75 V |
| ADC | 2 x 8-channel, 10-bit |
| PWM | 8-channel |
| Enhanced Capture Timer | 8-channel |
| Asynchronous Serial Communication Interfaces | 2 |
| Digital I/O Lines | 20 discrete lines |
| Total I/O Ports | 59 |
| Package | 80-pin PQFP, 14 mm x 14 mm |
| Mounting Type | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| Lifecycle Status | NRND |
MC9S12DJ256MFUE 80-pin pqfp, 14 mm x 14 mm Pin Configuration Guide
Pin configuration for MC9S12DJ256MFUE (80-pin pqfp, 14 mm x 14 mm 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 MC9S12DJ256MFUE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S12DJ256MFUE is suitable for 7 applications: Automotive Multiplexing Controller, Distributed Vehicle Sensor Acquisition, Actuator and PWM Control, Vehicle Body Electronics, Industrial Diagnostic Interface, Communication Gateway Module, Real-Time Control Subsystem.
Automotive Multiplexing Controller
MC9S12DJ256MFUE fits an automotive multiplexing controller because it combines a 16-bit HCS12 core, 256 KB of Flash, 12 KB of RAM, two serial communication interfaces, two 8-channel 10-bit ADCs, an 8-channel PWM, and 59 I/O ports. The device is specifically described for automotive multiplexing applications, allowing one controller to acquire sensor data and coordinate digital subsystems. The 80-pin PQFP provides numerous external signal options, while the 2.35 V to 2.75 V core supply requires a regulated automotive power architecture. Because the MCU is NRND, production designs should confirm NXP support and lifecycle coverage.
Recommended
Distributed Vehicle Sensor Acquisition
The two 8-channel, 10-bit ADCs make MC9S12DJ256MFUE appropriate for distributed vehicle sensor acquisition, where pressure, temperature, position, or switching inputs must be converted by an embedded controller. Its 16-bit HCS12 architecture and 256 KB Flash support firmware for calibration, filtering, diagnostics, and communication. The 59-I/O capability allows sensor-enable and fault-report signals to accompany analog channels. A 2.35 V to 2.75 V supply range requires careful rail design, and the NRND status means new sensor-controller programs should verify supply continuity and migration alternatives.
Recommended
Actuator and PWM Control
MC9S12DJ256MFUE can control automotive actuators through its 8-channel PWM and 20 discrete digital I/O lines. These resources support motor, valve, relay, indicator, or solenoid-control functions where precise timing and multiple output states are useful. The enhanced capture timer and dual serial interfaces allow the same module to receive feedback commands and report diagnostic events. Designers should use the verified 2.35 V to 2.75 V supply specification, external driver stages, and appropriate protection networks rather than driving load current directly from MCU I/O pins.
Recommended
Vehicle Body Electronics
MC9S12DJ256MFUE is suitable for vehicle body electronics because it combines 59 I/O ports with two serial interfaces, dual 10-bit ADCs, PWM, and a 16-bit control core. A body module can consolidate switch inputs, actuator outputs, diagnostic communication, and sensor conditioning in one controller. Its automotive multiplexing positioning and AEC-Q100 qualification reference make it relevant to vehicle electronics, while the 80-pin PQFP supports a substantial connector and routing budget. The NRND lifecycle status requires procurement and lifecycle confirmation before committing to a new production platform.
Recommended
Industrial Diagnostic Interface
MC9S12DJ256MFUE can support an industrial diagnostic interface when the design requires local control, serial connectivity, analog monitoring, and flexible discrete I/O. The two asynchronous serial communication interfaces provide communication paths for sensors, service equipment, or downstream controllers, while the dual ADCs support process measurements. Its 256 KB Flash and 12 KB RAM provide more embedded headroom than small 8-bit alternatives. The 2.35 V to 2.75 V operating range and automotive-oriented electrical environment should be validated against the industrial system, and NRND status should be addressed during lifecycle review.
Recommended
Communication Gateway Module
MC9S12DJ256MFUE can act as a communication gateway when a system needs to connect multiple embedded nodes while retaining local real-time control. Its two asynchronous serial interfaces are useful for separate communication channels, and the 16-bit HCS12 architecture supports protocol processing and state management. The two 8-channel 10-bit ADCs can monitor local analog conditions, while 59 I/O ports provide status and control lines. The 80-pin PQFP and 256 KB Flash support consolidated gateway designs, but designers must verify clock, electrical, timing, and software compatibility from the official NXP documentation.
Recommended
Real-Time Control Subsystem
MC9S12DJ256MFUE is appropriate for a real-time control subsystem that combines periodic digital control with analog measurement. The 16-bit HCS12 CISC core executes control firmware from 256 KB Flash, the 8-channel PWM supports timed outputs, and the enhanced capture timer supports input-event measurement. Two 10-bit ADC banks allow multiple sensor channels to be sampled, while two serial interfaces support communication with other modules. The 59-I/O count leaves substantial control connectivity. Firmware developers should validate interrupt latency, timer resources, bus timing, and memory-map assumptions against the manufacturer datasheet.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DJ256MFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DT256MFUE | MC9S12DJ64CFUE | MC9S12DP512CPVE | MC9S12DT256MPVE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-pin PQFP, 14 mm x 14 mm | 80-pin PQFP, package details require verification | PQFP-related package, details require verification | PQFP-related package, details require verification | PQFP-related package, details require verification |
| CPU Architecture | 16-bit HCS12 CISC | Related 16-bit HCS12 family | Related 16-bit HCS12 family | Related 16-bit HCS12 family | Related 16-bit HCS12 family |
Key Differentiators
- Dedicated automotive multiplexing positioning (vs MC9S12DT256MFUE)
- Verified 256 KB Flash configuration (vs MC9S12DJ64CFUE)
- Integrated dual ADC and serial interface set (vs MC9S12DP512CPVE)
- Explicit NRND lifecycle visibility (vs MC9S12DT256MPVE)
Design Notes
Design the MCU supply around the verified 2.35 V to 2.75 V range and the absolute maximum ratings in the NXP datasheet. The device is not specified for direct 5 V operation. Place the regulator, bulk capacitance, and local decoupling according to the manufacturer power-supply recommendations, and verify startup sequencing, reset release, and voltage tolerance across temperature and automotive transients.
Keep analog inputs, ADC references, oscillator connections, reset, and power pins on controlled routing paths. Follow the NXP package and layout guidance for decoupling placement and exposed routing requirements. Because the supplied data does not include a complete verified pin table, do not infer analog-channel assignments or ground connections from package position alone; cross-check the official pinout before PCB release.
Do not treat the related MC9S12 MPNs as automatic replacements. The supplied cross-reference results identify MC9S12DT256MFUE, MC9S12DJ64CFUE, MC9S12DP512CPVE, and MC9S12DT256MPVE as comparison candidates, but they do not prove identical pinout, memory map, electrical limits, or software behavior. Validate clock, reset, ADC, PWM, serial, and memory compatibility before substitution.
The verified material does not provide the MC9S12DJ256MFUE junction-temperature, package thermal-resistance, or ambient-temperature ratings. Those values must be taken from the NXP datasheet rather than estimated from the 80-pin PQFP. For an automotive enclosure, include the complete controller dissipation, regulator heat, copper area, and neighboring heat sources in the thermal budget.
Compliance Information
A verified technical summary identifies the part as AEC-Q100 qualified. The supplied data does not explicitly establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. These fields must be confirmed from current NXP documentation.
