MC9S12DJ128MPVE - 16-bit HCS12 MCU, 128KB Flash | NXP
MPN: MC9S12DJ128MPVE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $31.51 | $31.51 |
| 10 | $28.4 | $284.00 |
| 100 | $24.85 | $2,485.00 |
| 500 | $21.6 | $10,800.00 |
| 1,000 | $19.25 | $19,250.00 |
MC9S12DJ128MPVE Overview
A microcontroller (MCU) is an integrated circuit containing a CPU, memory and peripherals on a single die, used to control embedded systems. The HCS12 is a 16-bit CISC architecture from Freescale (now NXP) widely deployed in automotive body, chassis and industrial control. Within the broader semiconductor taxonomy, an MCU belongs to microcontrollers -> microprocessors -> logic ICs -> integrated circuits. The MC9S12DJ128MPVE targets designs requiring deterministic real-time behaviour, on-chip CAN-style networking, and ample Flash for protocol stacks.
Key differentiating features include the dual-ADC architecture (16 channels of 10-bit sampling), 8-channel PWM for motor or lighting control, integrated CAN-style networking peripherals, and background debug mode (BDM) for in-circuit non-intrusive debugging. The 128KB Flash supports in-application reprogramming via the internal Flash controller, enabling firmware updates without external boot ROM.
Typical applications include automotive body controllers, HVAC control modules, industrial sensor hubs, CAN node endpoints, and 16-bit legacy upgrade paths from older HC11/HC12 designs. The wide operating temperature range suits under-hood and industrial environments.
When designing with this MCU, allocate a 4.7uF to 10uF decoupling capacitor bank near each VDD/VSS pair, route the oscillator pins with a guarded ground return, and use the BDM interface for production programming. Engineers migrating from HC11 should consult NXP application note AN2466 for memory mapping differences.
This page synthesises distributor pricing, drop-in HCS12 family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MC9S12DJ128MPVE — 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 MC9S12DJ128MPVE (same form factor and footprint) — differing in Core Architecture, Package, ADC Channels, EEPROM, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DG128CPVE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DT128VPVE
✅ Drop-In✓ In Stock
$9.21 / Unit
View Datasheet →MC9S12DT128CPVE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12A256CPVE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908AZ32ACFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DJ128MPVE Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS12 (16-bit CISC) |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 8 KB |
| EEPROM | 2 KB |
| Maximum CPU Clock | 25 MHz (50 MHz internal bus via PLL, see datasheet) |
| Supply Voltage | 2.35 V to 2.75 V (single 2.5V nominal) |
| Digital I/O Pins | 59 |
| ADC | 2x 8-channel, 10-bit |
| PWM Channels | 8 |
| SCI (UART) | 2 |
| SPI | 1 |
| I2C (Inter-IC Bus) | 1 |
| Package | 112-LQFP (20x20 mm) |
| Operating Temperature | -40C to +125C (automotive grade) |
| Mounting Type | Surface Mount |
| Debug Interface | BDM (Background Debug Mode) |
| RoHS Status | Compliant |
MC9S12DJ128MPVE Pin Configuration
| Pin 1 | XCLKS — Clock mode select (external clock/lock select) |
| Pin 2 | PE7 — Port E bit 7 / PWM channel 7 / XBUS address |
| Pin 3 | PE6 — Port E bit 6 / PWM channel 6 / XBUS address |
| Pin 4 | PE5 — Port E bit 5 / PWM channel 5 / XBUS address |
| Pin 5 | PE4 — Port E bit 4 / PWM channel 4 / XBUS address |
| Pin 6 | PE3 — Port E bit 3 / TCLK input |
| Pin 7 | PE2 — Port E bit 2 / TCLK input |
| Pin 8 | PE1 — Port E bit 1 / XIRQ interrupt |
| Pin 9 | PE0 — Port E bit 0 / IRQ interrupt |
| Pin 10 | PK7 — Port K bit 7 / ECS / XBUS |
| Pin 11 | PK6 — Port K bit 6 / ECS / XBUS |
| Pin 12 | PK5 — Port K bit 5 / XBUS |
| Pin 13 | PK4 — Port K bit 4 / XBUS |
| Pin 14 | PK3 — Port K bit 3 / XBUS |
| Pin 15 | PK2 — Port K bit 2 / XBUS |
| Pin 16 | PK1 — Port K bit 1 / XBUS |
| Pin 17 | PK0 — Port K bit 0 / XBUS |
| Pin 18 | VDDR — Voltage regulator supply (regulated output) |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Digital supply voltage 2.5V |
| Pin 21 | VSS — Ground |
| Pin 22 | EXTAL — External oscillator input |
| Pin 23 | XTAL — External oscillator output |
| Pin 24 | RESET — Reset input (active low) |
| Pin 25 | BKGD — Background Debug Mode (BDM) data |
| Pin 26 | MODC — Mode select (BDM/normal mode) |
| Pin 27 | PAD0 — Port AD bit 0 / AN0 / ATD input |
| Pin 28 | PAD1 — Port AD bit 1 / AN1 / ATD input |
| Pin 29 | PAD2 — Port AD bit 2 / AN2 / ATD input |
| Pin 30 | PAD3 — Port AD bit 3 / AN3 / ATD input |
| Pin 31 | PAD4 — Port AD bit 4 / AN4 / ATD input |
| Pin 32 | PAD5 — Port AD bit 5 / AN5 / ATD input |
| Pin 33 | PAD6 — Port AD bit 6 / AN6 / ATD input |
| Pin 34 | PAD7 — Port AD bit 7 / AN7 / ATD input |
| Pin 35 | PAD8 — Port AD bit 8 / AN8 |
| Pin 36 | PAD9 — Port AD bit 9 / AN9 |
| Pin 37 | PAD10 — Port AD bit 10 / AN10 |
| Pin 38 | PAD11 — Port AD bit 11 / AN11 |
| Pin 39 | PAD12 — Port AD bit 12 / AN12 |
| Pin 40 | PAD13 — Port AD bit 13 / AN13 |
| Pin 41 | PAD14 — Port AD bit 14 / AN14 |
| Pin 42 | PAD15 — Port AD bit 15 / AN15 |
| Pin 43 | VDDA — Analog supply voltage |
| Pin 44 | VSSA — Analog ground |
| Pin 45 | VRH — ADC high reference voltage |
| Pin 46 | VRL — ADC low reference voltage |
| Pin 47 | PS7 — Port S bit 7 / SS / MISO / TXD1 |
| Pin 48 | PS6 — Port S bit 6 / SCK / RXD1 |
| Pin 49 | PS5 — Port S bit 5 / MOSI / TXD2 |
| Pin 50 | PS4 — Port S bit 4 / MISO / RXD2 |
| Pin 51 | PS3 — Port S bit 3 / SS / TXD1 |
| Pin 52 | PS2 — Port S bit 2 / SCK / RXD1 |
| Pin 53 | PS1 — Port S bit 1 / SDA / MOSI |
| Pin 54 | PS0 — Port S bit 0 / SCL / SCK |
| Pin 55 | PT7 — Port T bit 7 / IOC7 |
| Pin 56 | PT6 — Port T bit 6 / IOC6 |
| Pin 57 | PT5 — Port T bit 5 / IOC5 |
| Pin 58 | PT4 — Port T bit 4 / IOC4 |
| Pin 59 | PT3 — Port T bit 3 / IOC3 |
| Pin 60 | PT2 — Port T bit 2 / IOC2 |
| Pin 61 | PT1 — Port T bit 1 / IOC1 |
| Pin 62 | PT0 — Port T bit 0 / IOC0 |
| Pin 63 | PJ7 — Port J bit 7 / SCL / TXCAN |
| Pin 64 | PJ6 — Port J bit 6 / SDA / RXCAN |
| Pin 65 | PJ5 — Port J bit 5 / MOSI |
| Pin 66 | PJ4 — Port J bit 4 / MISO |
| Pin 67 | PJ3 — Port J bit 3 / SCK |
| Pin 68 | PJ2 — Port J bit 2 / SS |
| Pin 69 | PJ1 — Port J bit 1 / TXD0 |
| Pin 70 | PJ0 — Port J bit 0 / RXD0 |
| Pin 71 | PP7 — Port P bit 7 / PWM7 |
| Pin 72 | PP6 — Port P bit 6 / PWM6 |
| Pin 73 | PP5 — Port P bit 5 / PWM5 |
| Pin 74 | PP4 — Port P bit 4 / PWM4 |
| Pin 75 | PP3 — Port P bit 3 / PWM3 |
| Pin 76 | PP2 — Port P bit 2 / PWM2 |
| Pin 77 | PP1 — Port P bit 1 / PWM1 |
| Pin 78 | PP0 — Port P bit 0 / PWM0 |
| Pin 79 | PM7 — Port M bit 7 / TXCAN |
| Pin 80 | PM6 — Port M bit 6 / RXCAN |
| Pin 81 | PM5 — Port M bit 5 / TXCAN4 |
| Pin 82 | PM4 — Port M bit 4 / RXCAN4 |
| Pin 83 | PM3 — Port M bit 3 / TXCAN0 |
| Pin 84 | PM2 — Port M bit 2 / RXCAN0 |
| Pin 85 | PM1 — Port M bit 1 / TXCAN1 |
| Pin 86 | PM0 — Port M bit 0 / RXCAN1 |
| Pin 87 | PH7 — Port H bit 7 / SS |
| Pin 88 | PH6 — Port H bit 6 / SCK |
| Pin 89 | PH5 — Port H bit 5 / MOSI |
| Pin 90 | PH4 — Port H bit 4 / MISO |
| Pin 91 | PH3 — Port H bit 3 / SS1 |
| Pin 92 | PH2 — Port H bit 2 / SCK1 |
| Pin 93 | PH1 — Port H bit 1 / MOSI1 |
| Pin 94 | PH0 — Port H bit 0 / MISO1 |
| Pin 95 | VDD — Digital supply voltage 2.5V |
| Pin 96 | VSS — Ground |
| Pin 97 | PB7 — Port B bit 7 / address |
| Pin 98 | PB6 — Port B bit 6 / address |
| Pin 99 | PB5 — Port B bit 5 / address |
| Pin 100 | PB4 — Port B bit 4 / address |
| Pin 101 | PB3 — Port B bit 3 / address |
| Pin 102 | PB2 — Port B bit 2 / address |
| Pin 103 | PB1 — Port B bit 1 / address |
| Pin 104 | PB0 — Port B bit 0 / address |
| Pin 105 | PA7 — Port A bit 7 / address / data |
| Pin 106 | PA6 — Port A bit 6 / address / data |
| Pin 107 | PA5 — Port A bit 5 / address / data |
| Pin 108 | PA4 — Port A bit 4 / address / data |
| Pin 109 | PA3 — Port A bit 3 / address / data |
| Pin 110 | PA2 — Port A bit 2 / address / data |
| Pin 111 | PA1 — Port A bit 1 / address / data |
| Pin 112 | PA0 — Port A bit 0 / address / data |
Typical Applications
MC9S12DJ128MPVE is suitable for 6 applications: Automotive Body Control Module, Industrial Sensor Hub / PLC Slice, HVAC Climate Control Module, CAN Node Endpoint / Gateway, 16-bit Legacy Upgrade from HC11/HC12, Motor Control and Lighting PWM.
Automotive Body Control Module
The MC9S12DJ128MPVE fits automotive body controllers because its 128KB Flash and 8KB RAM support CAN-style networking stacks plus body-control firmware in a single die. The 112-LQFP package gives 59 digital I/O lines, enough to drive lighting, door, mirror and wiper loads through FET pre-drivers. The dual 8-channel 10-bit ADC pair provides 16 analog inputs for current sensing and switch reading. Its -40C to +125C qualification matches under-hood and cabin environments, while the BDM debug port supports production-line programming. Compared with HC11 predecessors, the HCS12 core delivers roughly 2x the MIPS at the same 25MHz bus, enabling more sophisticated body-network firmware without changing the PCB footprint.
Recommended
Industrial Sensor Hub / PLC Slice
The MC9S12DJ128MPVE suits industrial sensor hubs because its dual 10-bit ADC bank provides 16 analog channels for thermocouples, 4-20mA loops and bridge sensors. The 128KB Flash holds Modbus, PROFIBUS or CANopen protocol stacks alongside control logic. Two SCI ports enable simultaneous RS-232/RS-485 master plus slave links, while the SPI bus drives external DACs and digital potentiometers. The 2.35V to 2.75V single-supply rail simplifies EMC-compliant industrial designs, and the 112-LQFP package aids hand-rework during prototyping. Engineers value the deterministic HCS12 interrupt latency, critical for closed-loop control loops in PLC slice applications where timing jitter cannot be tolerated.
Recommended
HVAC Climate Control Module
The MC9S12DJ128MPVE is well matched to HVAC climate control modules because its 8-channel PWM directly drives brushless DC fan motors and stepper-motor damper actuators without external pulse-train hardware. The dual 10-bit ADC reads multiple temperature sensors (NTC thermistors) and humidity probes concurrently, while the SCI ports communicate with the vehicle CAN bus for setpoint commands. The 128KB Flash stores the climate-control algorithm plus diagnostic trouble codes (DTCs), and 8KB RAM accommodates lookup tables for airflow characterisation. The -40C to +125C automotive temperature grade ensures reliable operation in cabin and under-hood HVAC locations, and the 112-LQFP footprint supports standard four-layer PCB designs.
Recommended
CAN Node Endpoint / Gateway
For CAN node endpoints and simple gateways, the MC9S12DJ128MPVE provides the HCS12 core plus on-chip timers and SCI/SPI/I2C peripherals that, with an external CAN transceiver, implement a CAN node capable of 125 kbit/s to 1 Mbit/s operation. The 128KB Flash comfortably stores CANopen or DeviceNet protocol stacks, and the 2KB EEPROM retains node configuration and address across power cycles. The BDM port enables in-circuit firmware updates without bus traffic interruption. Compared with newer S12Z parts, this DJ128 variant trades raw throughput for cost-effectiveness in volume CAN deployments.
Recommended
16-bit Legacy Upgrade from HC11/HC12
Designers migrating from Motorola HC11 or older HC12 designs find the MC9S12DJ128MPVE attractive because the HCS12 core preserves the HC11 instruction set while delivering higher code density and faster execution. The 112-LQFP package fits existing PCB layouts with the same 0.65 mm pitch as legacy HC12 QFP packages, minimising mechanical rework. The 128KB Flash supports direct porting of HC11 firmware with minimal re-assembly, and the existing development toolchains (CodeWarrior, Cosmic, IAR) work unchanged. This makes the DJ128 an excellent bridge for legacy products where full PCB redesign is not economical.
Recommended
Motor Control and Lighting PWM
The MC9S12DJ128MPVE integrates an 8-channel PWM block suitable for small DC and stepper motor control plus LED lighting dimming. Each PWM channel offers programmable duty and frequency, enabling closed-loop PID control of brushed DC motors, solenoids, and RGB LED strips. The dual 10-bit ADC samples motor current or LED driver feedback simultaneously with the PWM update, allowing hardware-triggered conversions tightly synchronised to the PWM edge - critical for high-resolution current sensing. The 128KB Flash holds sensorless commutation tables, while the 59 I/O lines provide ample headroom for H-bridge FET pre-drivers and discrete status LEDs.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DJ128MPVE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DG128CPVE | MC9S12DT128VPVE | MC9S12DT128CPVE | MC9S12A256CPVE | MC908AZ32ACFUE |
|---|---|---|---|---|---|---|
| Package | 112-LQFP (20x20 mm) | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HCS12 (16-bit) | HC08 (8-bit) |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 12 KB | 1 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB | 0.5 KB |
| CPU Clock | 25 MHz (50 MHz internal) | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 8.4 MHz |
| ADC Channels | 16 (2x 8-ch, 10-bit) | 16 (10-bit) | 16 (10-bit) | 16 (10-bit) | 16 (10-bit) | 8 (8-bit) |
| PWM Channels | 8 | 8 | 8 | 8 | 8 | 6 |
| Operating Voltage | 2.35V - 2.75V | 2.35V - 2.75V | 2.35V - 2.75V | 2.35V - 2.75V | 2.35V - 2.75V | 3.0V - 5.5V |
Key Differentiators
- Dual 8-channel 10-bit ADC versus single ADC bank on older MCUs (vs MC908AZ32ACFUE)
- HCS12 16-bit core with 25MHz bus versus HC08 8-bit at 8.4MHz (vs MC908AZ32ACFUE)
- Same-package upgrade path to 256KB Flash (vs MC9S12A256CPVE)
Design Notes
The MC9S12DJ128MPVE requires a tightly regulated 2.5V supply (2.35V to 2.75V). Use a low-dropout regulator such as the NXP TLV1117-25 or equivalent from the input 5V rail. Place a 4.7uF bulk capacitor and a 0.1uF decoupling capacitor within 5 mm of each VDD/VSS pin pair. The VDDR pin requires its own 4.7uF capacitor to stabilise the internal voltage regulator. Estimated: at 25MHz CPU and full peripheral activity, core current is approximately 50 mA, requiring the LDO to dissipate (5V - 2.5V) * 0.050A = 0.125W.
Route the EXTAL and XTAL traces as a guarded differential pair with a continuous ground return on the layer beneath. Place load capacitors (typically 10-22 pF) close to the MCU pins, with values selected per crystal manufacturer specifications for the target load capacitance (typically 12-16 pF). For automotive designs requiring high EMI immunity, use a four-layer PCB with the oscillator ground island isolated from noisy digital returns.
Avoid the common pitfall of leaving the BKGD/MODC pins floating during reset - both must be pulled to defined logic levels for normal operation mode entry. The MODC pin should be tied high through a 10k resistor for normal mode, or low for BDM mode. The RESET pin requires an external pull-up to VDD and a 1 nF capacitor for noise filtering; absence of this network causes spurious resets in electrically noisy automotive environments.
Compliance Information
RoHS and lead-free per NXP product page. AEC-Q100 qualified for automotive applications (-40C to +125C). REACH SVHC compliance should be verified against the latest NXP declaration document.
