MC9S12DJ128VFUE - 16-Bit 25MHz 128KB Flash MCU | NXP
MPN: MC9S12DJ128VFUE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $29.9635 | $29.96 |
| 10 | $29.9635 | $299.64 |
| 100 | $29.9635 | $2,996.35 |
| 500 | $29.9635 | $14,981.75 |
| 1,000 | $29.9635 | $29,963.50 |
MC9S12DJ128VFUE Overview
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and input/output interfaces on one device. The MC9S12DJ128VFUE belongs to the HCS12 family and combines a 16-bit CISC-style core with serial communications, analog conversion, timing, and watchdog resources. This makes it suitable for embedded systems that require deterministic control, automotive networking, and mixed analog/digital signal acquisition.
The verified feature set includes two asynchronous serial communications interfaces, two 8-channel 10-bit analog-to-digital converters, an 8-channel PWM module, a watchdog timer, CANbus capability, I2C, SPI, and SCI connectivity. Its 128 KB Flash memory supports 128K x 8 organization, while the stated 2.35 V to 2.75 V supply range identifies a 2.5 V operating class. The family documentation also identifies 20 discrete digital I/O lines, while distributor records report 59 total I/O ports.
The MC9S12DJ128VFUE belongs to the MC9S12D family, designed with fully pin-compatible members to support scalable memory and peripheral options. This family characteristic can simplify board planning when a design changes memory capacity or peripheral requirements without requiring a complete PCB redesign. Clock generation, interrupt control, resource mapping, and bus interface functions are integrated into the device.
Typical applications include automotive body modules, multiplexing controllers, motor and relay control, instrumentation, industrial embedded controllers, and CAN-based nodes. The CANbus, SCI, SPI, and I2C interfaces support communication with sensors, actuators, diagnostic equipment, and other embedded controllers. The watchdog timer improves system resilience by helping detect abnormal execution states, while the PWM outputs suit motor, lamp, and proportional valve control.
Designers should verify the complete electrical and pin-level requirements against the manufacturer datasheet before layout or firmware substitution. The verified distributor descriptions differ on package terminology and report conflicting clock information; the authoritative selection record from DigiKey identifies 25 MHz, while another result lists 50 MHz. Validate the operating frequency, voltage variants, pin multiplexing, and automotive qualifications for the exact suffix before release to production.
This page consolidates verified manufacturer and distributor information, package data, interface details, memory characteristics, and engineering cautions. It also distinguishes explicitly verified facts from fields that require confirmation, helping engineers evaluate the MC9S12DJ128VFUE without relying on unverified generic substitutions.
Drop-in alternatives for MC9S12DJ128VFUE — 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 MC9S12DJ128VFUE (same form factor and footprint) — differing in Package, Product Type, ADC, Flash Memory, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DJ128MFUE
✅ Drop-In✓ In Stock
$10.75 / Unit
View Datasheet →MC9S12DG128BVFU
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →MC9S12DJ64VFUE
✅ Drop-In✓ In Stock
$8.75 / Unit
View Datasheet →MC9S12DT256MFUE
✅ Drop-In✓ In Stock
$19.2 / Unit
View Datasheet →MC9S12D64CFUER
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →MC9S12DJ128VFUE Maximum Ratings & Electrical Characteristics
| Core Processor | HCS12 16-bit CISC core |
| Maximum Clock Speed | 25 MHz per DigiKey; conflicting third-party result states 50 MHz |
| Data Bus Width | 16 bit |
| Program Memory | 128 KB Flash (128K x 8) |
| EEPROM Memory | 2 KB (2K x 8) |
| RAM Memory | 8 KB |
| Supply Voltage | 2.35 V to 2.75 V |
| I/O Ports | 59 |
| Discrete Digital I/O Lines | 20 |
| ADC | Two 8-channel 10-bit ADCs |
| PWM | 8-channel PWM |
| Serial Communication Interfaces | Two asynchronous serial communication interfaces |
| Connectivity | CANbus, I2C, SCI, and SPI |
| Timers | Enhanced capture timer and watchdog timer |
| Package | 80-pin plastic LQFP/PQFP, 14 x 14 mm |
| Mounting | Surface mount |
| Operating Temperature | -40 °C to 105 °C |
| Lifecycle Status | NRND according to the NXP product page result |
MC9S12DJ128VFUE 80-pin plastic lqfp/pqfp, 14 x 14 mm Pin Configuration Guide
Pin configuration for MC9S12DJ128VFUE (80-pin plastic lqfp/pqfp, 14 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 MC9S12DJ128VFUE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S12DJ128VFUE is suitable for 6 applications: Automotive Body Control Module, CAN Network Sensor Node, Motor and Relay Control, Industrial Embedded Controller, Instrumentation and Data Acquisition, Diagnostic and Service Interface.
Automotive Body Control Module
The MC9S12DJ128VFUE fits an automotive body-control node because it combines a 16-bit HCS12 core with CANbus, SCI, I2C, SPI, 8-channel PWM, and two 8-channel 10-bit ADCs. A controller can acquire sensor inputs, operate relays or lamps through PWM-capable outputs, and communicate with vehicle networks through CANbus. Its 128 KB Flash provides room for application code while 8 KB RAM supports working state and 2 KB EEPROM can retain configuration values. The verified 2.35 V to 2.75 V supply range must be reconciled with the vehicle power architecture and protected through appropriate regulation and transient control. Because the exact VFUE qualification status is not supplied, production use requires NXP confirmation of automotive grade and lifecycle suitability.
Recommended
CAN Network Sensor Node
For a CAN-connected sensor node, the MC9S12DJ128VFUE provides the communication and acquisition resources needed to consolidate several inputs into a vehicle or industrial network. The verified feature list includes CANbus connectivity, two asynchronous serial communication interfaces, SPI, I2C, two 10-bit ADCs, and a watchdog timer. The processor can sample analog sensors, manage digital inputs, filter measurements, and transmit status frames while the watchdog provides a recovery mechanism for unexpected firmware or hardware states. Its 25 MHz selection value should be confirmed against the exact device documentation before timing calculations. Board design must validate transceiver selection, bus termination, isolation requirements, grounding, and the device's exact pin assignments.
Recommended
Motor and Relay Control
The MC9S12DJ128VFUE is appropriate for small motor, valve, relay, and actuator control systems where deterministic digital timing and analog feedback are needed. Its verified 8-channel PWM resource can generate control signals for multiple actuator channels, while the two 8-channel 10-bit ADCs can monitor feedback or sensor voltages. The 16-bit CPU supports the control logic, while CANbus, SCI, and I2C allow supervisory commands and diagnostics. Designers must check PWM frequency, duty-cycle limits, pin electrical ratings, ADC acquisition requirements, and protection against inductive loads. Flyback paths, current sensing, grounding, and watchdog-controlled safe states are essential for reliable operation.
Recommended
Industrial Embedded Controller
The MC9S12DJ128VFUE can serve as an embedded controller for industrial equipment that needs local I/O, serial connectivity, and analog measurement. Its 59 reported I/O ports provide a substantial interface budget, while the verified 8-channel PWM and dual 10-bit ADC resources support monitoring and basic control functions. SCI and SPI can connect to displays, sensors, data converters, or service interfaces, while I2C supports lower-bandwidth peripherals. The 128 KB Flash and 8 KB RAM are suitable for moderate embedded applications, but memory planning is important for buffers and diagnostics. Confirm the exact operating-temperature, clock, electrical, and qualification details before using the device in a production industrial controller.
Recommended
Instrumentation and Data Acquisition
The MC9S12DJ128VFUE is a reasonable fit for compact instrumentation where multiple analog channels, serial reporting, and local control are required. The two 8-channel 10-bit ADCs provide the core measurement channels, and the 16-bit processing core can perform scaling, filtering, calibration storage, and status reporting. EEPROM capacity is limited to 2 KB, so persistent calibration data must be budgeted carefully; RAM capacity is 8 KB and should be reserved for acquisition buffers and communication state. SCI, SPI, and I2C allow connection to external converters, display modules, or host equipment. Validate ADC reference accuracy, sample timing, input protection, grounding, and calibration procedures using the official electrical and timing documentation.
Recommended
Diagnostic and Service Interface
The MC9S12DJ128VFUE can support diagnostic and service functions through its CANbus and asynchronous serial interfaces. A service node can read operating parameters, report fault states, perform input/output checks, and update nonvolatile configuration where the 2 KB EEPROM budget permits. The 16-bit CPU and 128 KB Flash provide capacity for protocol handling, diagnostics, and application code, while the watchdog helps recover from unexpected states. In a service interface, designers should define frame identifiers, timeout behavior, security requirements, and safe command defaults before implementation. Electrical isolation, bus protection, ESD protection, and exact pin multiplexing must be validated against the official datasheet and the vehicle or equipment interface specification.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DJ128VFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DJ128MFUE | MC9S12DG128BVFU | MC9S12DJ64VFUE | MC9S12DT256MFUE | MC9S12D64CFUER |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-QFP (14 x 14 mm) | 80-QFP (14 x 14 mm) - package designation requires verification | 80-QFP (14 x 14 mm) - package designation requires verification | 80-QFP (14 x 14 mm) - package designation requires verification | 80-QFP (14 x 14 mm) - package designation requires verification | 80-QFP (14 x 14 mm) - package designation requires verification |
Key Differentiators
- Verified 128 KB Flash capacity (vs MC9S12DJ64VFUE)
- Automotive-oriented HCS12 peripheral set (vs MC9S12DG128BVFU)
- Specific 80-QFP 14 x 14 mm package selection (vs MC9S12DT256MFUE)
- Documented connectivity combination (vs MC9S12D64CFUER)
Design Notes
Validate the complete power architecture against the stated 2.35 V to 2.75 V supply range before placing the MC9S12DJ128VFUE on a board. Separate analog and digital supply requirements, regulator tolerances, startup sequencing, and I/O voltage domains must be checked against the official datasheet. Do not infer a 5 V-compatible interface from the family name or automotive context. Estimated input power cannot be calculated reliably without the final clock, active peripherals, I/O loading, and voltage-domain data; obtain those values before sizing the regulator and decoupling network.
Use the official NXP 80-pin package drawing and land pattern rather than a generic QFP footprint. Confirm pin 1 orientation, exposed thermal or thermal-pad details if present, and the exact meaning of every power, ground, debug, analog-reference, and communications pin. Keep decoupling connections short and route high-current or switching-node connections away from ADC and communication inputs. Because the supplied snippets do not include the complete pinout, the package cannot be safely released without a datasheet-level cross-check.
The retrieved clock data conflicts: DigiKey identifies 25 MHz, while another result lists 50 MHz. Treat 25 MHz as the verified selection value, but verify the exact VFUE device maximum before configuring the clock tree, timer periods, UART baud rates, or interrupt latency. Also verify package suffix and temperature-grade meaning before treating a similarly named MC9S12 member as a replacement. A family-compatible name is not sufficient evidence of firmware, pin, or lifecycle compatibility.
For CANbus, SCI, SPI, and I2C interfaces, follow the exact electrical and pin-multiplexing requirements from the datasheet. Use appropriate protection, grounding, and return-path planning for external connectors and harnesses. For ADC channels, verify source impedance, sampling time, reference voltage, and acquisition settling rather than treating the 10-bit resolution as an accuracy specification. PWM outputs driving inductive or high-current loads need external protection and defined safe states, especially when the firmware can be reset or halted.
Compliance Information
The retrieved product-page snippet references environmental quality but does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Compliance must be confirmed for the exact MC9S12DJ128VFUE suffix and current manufacturer documentation.
