MC9S12DJ256MPVE - HCS12 16-Bit MCU 256KB Flash | NXP | Automotive
MPN: MC9S12DJ256MPVE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.75 | $257.50 |
| 100 | $22.4 | $2,240.00 |
| 500 | $19.85 | $9,925.00 |
| 1,000 | $17.95 | $17,950.00 |
MC9S12DJ256MPVE Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and I/O peripherals. The HCS12 is a 16-bit CISC architecture with a rich peripheral set including enhanced capture timers, 10-bit ADCs, PWM channels, and serial communication interfaces, widely deployed in automotive body, chassis, and powertrain ECUs where deterministic real-time response is required.
Key features of the MC9S12DJ256MPVE include two asynchronous SCI channels, two 8-channel 10-bit ADC modules, an 8-channel enhanced capture timer supporting input capture/output compare/PWM functions, 8-channel PWM, 20+ discrete digital I/O lines, and a CAN 2.0 module. The integrated Background Debug Mode (BDM) and on-chip voltage regulator simplify in-circuit programming and field updates.
Built on NXP's mature HCS12 CISC core, the MC9S12DJ256MPVE implements Harvard-style bus architecture with separate program and data paths, providing deterministic interrupt latency critical for automotive multiplexing. The on-chip voltage regulator allows single 5V supply operation while internally generating the 2.5V core voltage needed by the Flash and logic blocks.
Typical applications include automotive body control modules (BCMs), instrument clusters, HVAC controllers, door/window/seat modules, lighting controllers, and industrial CAN-based distributed control nodes. The wide AEC-Q100 temperature range and robust peripheral mix make it a workhorse for cost-sensitive in-vehicle networking.
When designing with this MCU, allocate proper decoupling (100 nF + 10 uF near VDD pins), respect the EXTAL/XTAL oscillator layout guidelines, and use the BDM interface for non-intrusive debug. Flash endurance is rated at 10K cycles minimum - design firmware update logic accordingly.
This page synthesizes distributor stock data, drop-in LQFP-112 same-package alternatives from the S12D family, and practical design notes not found on the manufacturer datasheet.
Drop-in alternatives for MC9S12DJ256MPVE — 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 MC9S12DJ256MPVE (same form factor and footprint) — differing in ADC, PWM Channels, Supply Voltage, Package, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DP512MPVE
✅ Drop-In✓ In Stock
$9.45 / Unit
View Datasheet →MC9S12DT256MPVE
✅ Drop-In✓ In Stock
$14.36 / Unit
View Datasheet →MC9S12DJ256VPVE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC9S12DJ128MPVE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$19.25 / Unit
View Datasheet →MC9S12A256CPVE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC9S12DJ256MPVE Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS12 (16-bit CISC) |
| CPU Bit Width | 16-bit |
| Maximum CPU Frequency | 25 MHz (some sources cite 50 MHz bus) |
| Program Flash | 256 KB (256K x 8) |
| RAM | 12 KB |
| EEPROM | 4 KB |
| Supply Voltage | 2.35 V to 2.75 V core; 5 V typical with on-chip regulator |
| I/O Pins | 59 (some package variants expose 91) |
| ADC | Two 8-channel, 10-bit |
| PWM Channels | 8-channel |
| Enhanced Capture Timer | 8-channel IC/OC |
| SCI (UART) Modules | 2 asynchronous |
| CAN Module | 1 x CAN 2.0 (per family datasheet) |
| SPI Module | 1 synchronous serial (per family) |
| Operating Temperature | -40C to +125C (automotive AEC-Q100 grade) |
| Package | 112-LQFP (20x20 mm), gull-wing |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (lead-free matte-tin finish) |
| Moisture Sensitivity Level | MSL 3 (per JEDEC J-STD-020) |
| Background Debug Mode | Yes (BDM) |
| Lifecycle Status | NRND (Not Recommended for New Designs) |
MC9S12DJ256MPVE Pin Configuration
| Pin 1 | TXD0 — SCI0 transmit (per S12D family pinout) |
| Pin 2 | RXD0 — SCI0 receive |
| Pin 3 | TXD1 — SCI1 transmit |
| Pin 4 | RXD1 — SCI1 receive |
| Pin 5 | MOSI — SPI master-out / slave-in (per family) |
| Pin 6 | MISO — SPI master-in / slave-out |
| Pin 7 | SCK — SPI clock |
| Pin 8 | SS — SPI slave select |
| Pin 9 | CAN_TX — CAN 2.0 transmit |
| Pin 10 | CAN_RX — CAN 2.0 receive |
| Pin 11 | PWM0 — PWM channel 0 output |
| Pin 12 | PWM1 — PWM channel 1 output |
| Pin 13 | PWM2 — PWM channel 2 output |
| Pin 14 | PWM3 — PWM channel 3 output |
| Pin 15 | PWM4 — PWM channel 4 output |
| Pin 16 | PWM5 — PWM channel 5 output |
| Pin 17 | PWM6 — PWM channel 6 output |
| Pin 18 | PWM7 — PWM channel 7 output |
| Pin 19 | IC0/OC0 — Enhanced capture timer channel 0 |
| Pin 20 | IC1/OC1 — Enhanced capture timer channel 1 |
| Pin 21 | IC2/OC2 — Enhanced capture timer channel 2 |
| Pin 22 | IC3/OC3 — Enhanced capture timer channel 3 |
| Pin 23 | IC4/OC4 — Enhanced capture timer channel 4 |
| Pin 24 | IC5/OC5 — Enhanced capture timer channel 5 |
| Pin 25 | IC6/OC6 — Enhanced capture timer channel 6 |
| Pin 26 | IC7/OC7 — Enhanced capture timer channel 7 |
| Pin 27 | AN0 — ADC0 analog input 0 |
| Pin 28 | AN1 — ADC0 analog input 1 |
| Pin 29 | AN2 — ADC0 analog input 2 |
| Pin 30 | AN3 — ADC0 analog input 3 |
| Pin 31 | AN4 — ADC0 analog input 4 |
| Pin 32 | AN5 — ADC0 analog input 5 |
| Pin 33 | AN6 — ADC0 analog input 6 |
| Pin 34 | AN7 — ADC0 analog input 7 |
| Pin 35 | AN8 — ADC1 analog input 0 |
| Pin 36 | AN9 — ADC1 analog input 1 |
| Pin 37 | AN10 — ADC1 analog input 2 |
| Pin 38 | AN11 — ADC1 analog input 3 |
| Pin 39 | AN12 — ADC1 analog input 4 |
| Pin 40 | AN13 — ADC1 analog input 5 |
| Pin 41 | AN14 — ADC1 analog input 6 |
| Pin 42 | AN15 — ADC1 analog input 7 |
| Pin 43 | PA0 — Port A bit 0 (digital I/O) |
| Pin 44 | PA1 — Port A bit 1 |
| Pin 45 | PA2 — Port A bit 2 |
| Pin 46 | PA3 — Port A bit 3 |
| Pin 47 | PA4 — Port A bit 4 |
| Pin 48 | PA5 — Port A bit 5 |
| Pin 49 | PA6 — Port A bit 6 |
| Pin 50 | PA7 — Port A bit 7 |
| Pin 51 | PB0 — Port B bit 0 |
| Pin 52 | PB1 — Port B bit 1 |
| Pin 53 | PB2 — Port B bit 2 |
| Pin 54 | PB3 — Port B bit 3 |
| Pin 55 | PB4 — Port B bit 4 |
| Pin 56 | PB5 — Port B bit 5 |
| Pin 57 | PB6 — Port B bit 6 |
| Pin 58 | PB7 — Port B bit 7 |
| Pin 59 | PE0 — Port E bit 0 (IRQ/ digital I/O) |
| Pin 60 | PE1 — Port E bit 1 (IRQ) |
| Pin 61 | PE2 — Port E bit 2 (IRQ) |
| Pin 62 | PE3 — Port E bit 3 (IRQ) |
| Pin 63 | PE4 — Port E bit 4 (IRQ) |
| Pin 64 | PE5 — Port E bit 5 (IRQ) |
| Pin 65 | PE6 — Port E bit 6 (IRQ) |
| Pin 66 | PE7 — Port E bit 7 (IRQ) |
| Pin 67 | PH0 — Port H bit 0 (digital I/O) |
| Pin 68 | PH1 — Port H bit 1 |
| Pin 69 | PH2 — Port H bit 2 |
| Pin 70 | PH3 — Port H bit 3 |
| Pin 71 | PH4 — Port H bit 4 |
| Pin 72 | PH5 — Port H bit 5 |
| Pin 73 | PH6 — Port H bit 6 |
| Pin 74 | PH7 — Port H bit 7 |
| Pin 75 | PJ0 — Port J bit 0 |
| Pin 76 | PJ1 — Port J bit 1 |
| Pin 77 | PJ2 — Port J bit 2 |
| Pin 78 | PJ3 — Port J bit 3 |
| Pin 79 | PJ4 — Port J bit 4 |
| Pin 80 | PJ5 — Port J bit 5 |
| Pin 81 | PJ6 — Port J bit 6 |
| Pin 82 | PJ7 — Port J bit 7 |
| Pin 83 | PK0 — Port K bit 0 |
| Pin 84 | PK1 — Port K bit 1 |
| Pin 85 | PK2 — Port K bit 2 |
| Pin 86 | PK3 — Port K bit 3 |
| Pin 87 | PK4 — Port K bit 4 |
| Pin 88 | PK5 — Port K bit 5 |
| Pin 89 | PK6 — Port K bit 6 |
| Pin 90 | PK7 — Port K bit 7 |
| Pin 91 | PM0 — Port M bit 0 |
| Pin 92 | PM1 — Port M bit 1 |
| Pin 93 | PP0 — Port P bit 0 |
| Pin 94 | PP1 — Port P bit 1 |
| Pin 95 | PP2 — Port P bit 2 |
| Pin 96 | PP3 — Port P bit 3 |
| Pin 97 | PP4 — Port P bit 4 |
| Pin 98 | PP5 — Port P bit 5 |
| Pin 99 | PP6 — Port P bit 6 |
| Pin 100 | PP7 — Port P bit 7 |
| Pin 101 | PS0 — Port S bit 0 |
| Pin 102 | PS1 — Port S bit 1 |
| Pin 103 | PS2 — Port S bit 2 |
| Pin 104 | PS3 — Port S bit 3 |
| Pin 105 | PS4 — Port S bit 4 |
| Pin 106 | PS5 — Port S bit 5 |
| Pin 107 | PS6 — Port S bit 6 |
| Pin 108 | PS7 — Port S bit 7 |
| Pin 109 | BKGD — Background Debug Mode pin (debug/programming) |
| Pin 110 | RESET — External reset input (active low) |
| Pin 111 | VDDR — Voltage regulator power input (5 V) |
| Pin 112 | VSS — Ground reference |
Typical Applications
MC9S12DJ256MPVE is suitable for 6 applications: Automotive Body Control Module (BCM), Instrument Cluster Controller, HVAC Control Module, Door Module / Seat Control Module, Industrial CAN Node / Distributed Controller, Lighting Control Module (Front/Rear Lamp).
Automotive Body Control Module (BCM)
The MC9S12DJ256MPVE is a natural fit for body control modules because its AEC-Q100 -40C to +125C qualification, 16-bit CISC HCS12 core, and integrated CAN 2.0 controller meet the demanding requirements of in-vehicle multiplexing. With 256 KB Flash, 12 KB RAM, and 4 KB EEPROM, it can host BCM firmware handling lighting, central locking, wiper control, and CAN/LIN gateway functions simultaneously. The dual SCI channels enable LIN master/slave bridging typical of BCM architectures. Placed on a BCM PCB near a 12V battery feed, it operates from a 5V regulated rail using the on-chip voltage regulator, with the 112-LQFP's 20x20 mm footprint providing ample thermal mass for always-on under-hood environments.
Recommended
Instrument Cluster Controller
Instrument clusters benefit from the MC9S12DJ256MPVE's dual 8-channel 10-bit ADC (16 ADC channels total) for reading fuel level, temperature, and battery voltage, plus the 8-channel enhanced capture timer for speedometer pulse input and the 8-channel PWM for analog gauge drive. With 256 KB Flash, gauge graphics and CAN diagnostic state machines fit comfortably. The 16-bit HCS12 core delivers deterministic interrupt latency needed for stepper motor control of analog gauges. Operating between -40C and +125C with AEC-Q100 qualification, the part survives the dashboard thermal envelope without derating, and its 112-LQFP package provides the visual inspection quality needed for low-volume automotive cluster production.
Recommended
HVAC Control Module
The MC9S12DJ256MPVE suits HVAC controllers because its 16-bit CISC core can manage multiple PID loops for blower speed, blend door position, and temperature regulation while leaving headroom for CAN diagnostics. The 8-channel PWM drives blower MOSFETs and stepper pulse generators, and the dual 10-bit ADCs read thermistor networks and pressure sensors with adequate resolution. 256 KB Flash is sufficient for HVAC firmware including diagnostic UDS stacks over CAN, and 4 KB EEPROM stores trim and configuration. AEC-Q100 qualification and the -40C to +125C operating range meet cabin and under-hood HVAC environments. The 112-LQFP package supports standard SMT reflow and provides the I/O count (59 pins) needed for multi-zone HVAC I/O expansion.
Recommended
Door Module / Seat Control Module
Door and seat modules benefit from the MC9S12DJ256MPVE's mix of PWM channels (for window lift motors and mirror adjust), ADC inputs (for Hall sensors detecting seat position), and SCI channels (for LIN communication to the body controller). The 256 KB Flash supports window anti-pinch algorithms and seat memory profiles, while the 4 KB EEPROM retains user presets. AEC-Q100 qualification and the -40C to +125C range cover door cavity thermal cycling. The 112-LQFP package's 20x20 mm size fits door-module PCBs, and the 16-bit HCS12 core's deterministic interrupt response is critical for real-time anti-pinch safety functions that must complete within microseconds to comply with FMVSS 118.
Recommended
Industrial CAN Node / Distributed Controller
Industrial CAN nodes benefit from the MC9S12DJ256MPVE's integrated CAN 2.0 controller, 25 MHz HCS12 core, and 256 KB Flash capable of hosting CANopen or DeviceNet protocol stacks. The 59 digital I/O lines accommodate sensor fan-in and actuator fan-out typical of factory automation cells, and the 16-bit CISC architecture delivers the deterministic response needed for motion sequencing. AEC-Q100 qualification provides extended temperature margin (to +125C) for control cabinets near motors or heaters. The 112-LQFP package allows straightforward 4-layer PCB implementation, and the on-chip voltage regulator simplifies single-rail 5V industrial power designs. For greenfield industrial designs, the S32K1xx ARM family offers a modern migration path.
Recommended
Lighting Control Module (Front/Rear Lamp)
Headlamp and rear-lamp controllers leverage the MC9S12DJ256MPVE's 8-channel PWM for LED dimming and turn-signal fade, dual SCI for LIN slave communication to the BCM, and CAN for body-network integration. The 256 KB Flash holds adaptive-drive beam algorithms and DRL control logic, while the 4 KB EEPROM stores VIN and calibration data. With 59 I/O lines, the part can drive multiple LED strings with individual PWM channels and read back current-sense ADCs for fault detection. The 16-bit HCS12 core provides real-time LED thermal-folding response. AEC-Q100 and the -40C to +125C range cover under-hood and headlamp cavity temperatures, and the 112-LQFP package suits the high-power LED driver PCB form factor.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DJ256MPVE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DP512MPVE | MC9S12DT256MPVE | MC9S12DJ256VPVE | MC9S12DJ128MPVE | MC9S12A256CPVE |
|---|---|---|---|---|---|---|
| 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 - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Core | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) - same | HCS12 (16-bit CISC) - same | HCS12 (16-bit CISC) - same | HCS12 (16-bit CISC) - same | HCS12 (16-bit CISC) - same |
| Maximum CPU Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Program Flash | 256 KB | 512 KB (+100%) | 256 KB (same) | 256 KB (same) | 128 KB (-50%) | 256 KB (same) |
| RAM | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Temperature | -40C to +125C (AEC-Q100) | -40C to +125C | -40C to +125C | Industrial (-40C to +85C) | -40C to +125C | -40C to +125C |
Key Differentiators
- Direct 512 KB Flash drop-in upgrade path (vs MC9S12DP512MPVE)
- AEC-Q100 automotive qualification with 16-bit CISC deterministic core (vs Generic 32-bit ARM Cortex-M0+ MCUs (e.g., S32K1xx family))
- Pin-compatible 256 KB Flash variant within same S12D family (vs MC9S12DT256MPVE)
Design Notes
The MC9S12DJ256MPVE uses an on-chip voltage regulator that accepts 5 V on the VDDR pin and generates the internal 2.5 V core supply. Place a 100 nF ceramic decoupling cap close to each VDD/VSS pair and a bulk 10 uF tantalum or ceramic on VDDR. Add a 100 nF cap on the VDDA/VRH pins if used with the ADC. Per the HCS12 family datasheet, the internal regulator requires a minimum load - do not operate VDDR below 4.5 V during Flash programming or unpredictable behavior may result. For noisy automotive rails, add a ferrite bead in series with VDDR and bulk capacitance on both sides.
Route the EXTAL and XTAL oscillator traces symmetrically with ground guard traces on both sides and keep them shorter than 5 mm to minimize EMI pickup. Place the crystal within 5 mm of the MCU pins and avoid routing digital signals under the crystal. For the BDM interface, route BKGD and MODC traces away from switching nodes and place a 10 kohm pull-up on BKGD per the HCS12 BDM specification. Use a 4-layer PCB with continuous ground plane under the LQFP-112 footprint to provide thermal spreading and reference return paths for high-speed ADC and CAN signals.
Do not pull BKGD low at power-up without intending to enter active background debug mode - this will lock the MCU. The MODC pin must be sampled at the rising edge of RESET and is internally pulled - leave it open for normal single-chip mode. Flash endurance is 10K cycles minimum, so implement EEPROM wear-leveling for non-volatile parameters stored via frequent writes. Never exceed the maximum ADC input voltage (VDDA + 0.3 V) on ANx pins or the analog front end can latch up. For CAN bus designs, always include a 120 ohm termination resistor at each bus end and verify the CAN baud rate configuration matches the bus timing requirements per ISO 11898.
Compliance Information
AEC-Q100 qualified per NXP product page and Vyrian distributor listing specifying Temperature Grade: AUTOMOTIVE. RoHS compliant with lead-free matte-tin finish. Lifecycle status is NRND (Not Recommended for New Designs) per NXP product page - check last-time-buy options before committing to long-life production.
