MC9S12DT256CMPV - 16-Bit 50MHz Automotive MCU, 256KB Flash | NXP
N.º de pieza: MC9S12DT256CMPV ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $22.5 | $22,50 |
| 10 | $19.8 | $198,00 |
| 100 | $16.4 | $1.640,00 |
| 500 | $13.95 | $6.975,00 |
| 1.000 | $11.5 | $11.500,00 |
MC9S12DT256CMPV Descripción general
What is an HCS12 microcontroller? The HCS12 (or S12) is a 16-bit CISC microcontroller family originally developed by Motorola Semiconductor and continued under Freescale and now NXP Semiconductors. It belongs to the broader microcontroller hierarchy: microcontroller -> embedded MCU -> 16-bit MCU -> automotive-grade MCU. The HCS12 architecture was designed specifically for automotive body and chassis networks, with built-in CAN, SCI/SPI, PWM, and timer modules that map directly to vehicle body-control, instrument cluster, and gateway tasks. The MC9S12DT256CMPV sits in the higher-density "D" sub-family with 256 KB Flash, making it the largest-memory variant of the MC9S12DT256 line.
Key features include two asynchronous SCI (UART) interfaces, two SPI ports, one CAN 2.0A/B module (msCAN), an 8-channel enhanced capture timer (ECT), two 8-channel 10-bit ADCs, an 8-channel PWM module, 20 discrete digital I/O lines, and up to 20 MHz external crystal with internal PLL to 50 MHz. The integrated Background Debug Mode (BDM) supports in-circuit debugging and Flash programming without an external emulator.
Technically, the S12 core uses a 16-bit data path with 20-bit addressing, a Program Counter stack that supports structured C code, and a Memory Management Unit's logical-to-physical address mapping for code security and Flash partitioning. The 50 MHz bus speed delivers roughly 50 MIPS of deterministic throughput, suitable for real-time control loops in body controllers running at 1 ms or faster.
Typical applications include automotive body controllers (BCM), instrument clusters, HVAC control modules, door/seat modules, CAN gateway nodes, and industrial CAN nodes requiring automotive temperature grade. Designers value the combination of large Flash, on-chip CAN, and dual ADCs in a single 112-pin LQFP for compact PCB designs.
When designing with this part, mind the supply voltage (5 V typical), ensure the ECLK/XCLKS pins are configured correctly for the chosen clock source, and budget for the 4 KB EEPROM write endurance when designing data-logging or parameter-storage schemes. Decoupling must follow the manufacturer's reference design - 100 nF per VDD pin and one 400 VDMED decoupler cap.
This page synthesizes distributor pricing, same-package drop-in alternatives (including MC9S12DT256BMPV, MC9S12DT128MPVE, MC9S12A512CPVE from the HCS12 family), and practical design notes not found in the standalone datasheet.
Alternativas directas para MC9S12DT256CMPV — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC9S12DT256CMPV (mismo factor de forma y huella) — difiere en Package, RoHS Status, Core Processor, PWM Channels, ADC Resolution.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC9S12DT256BMPV
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S12DT128MPVE
✅ Sustitución directa✓ En stock
$36.5 / unidad
Ver hoja de datos →MC9S12A512CPVE
✅ Sustitución directa✓ En stock
$10.45 / unidad
Ver hoja de datos →MC9S12DG256CCPV
✅ Sustitución directa✓ En stock
$18.2 / unidad
Ver hoja de datos →MC9S12A64CPVE
✅ Sustitución directa✓ En stock
$32.6 / unidad
Ver hoja de datos →MC9S12XEQ384CAG
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MC9S12XDT512MAA
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MC9S12DT256CMPV Valores máximos y características eléctricas
| Core Architecture | HCS12 (S12) 16-bit CISC |
| Bus Frequency | Up to 50 MHz |
| Program Flash | 256 KB |
| RAM | 12 KB |
| EEPROM | 4 KB |
| Encapsulado | LQFP-112 |
| Recuento de pines | 112 |
| Operating Voltage | 5.0 V (4.5 V to 5.5 V) |
| Temperature Grade | Automotive (-40C to +125C) |
| ADC | 2 x 8-channel 10-bit |
| PWM Channels | 8 channels |
| Enhanced Capture Timer | 8-channel (ECT) |
| SCI (UART) Interfaces | 2 |
| SPI Interfaces | 2 |
| CAN Modules | 1 x msCAN (CAN 2.0A/B) |
| GPIO (Approx.) | 20 discrete digital I/O lines |
| Debug Interface | Background Debug Mode (BDM) |
| Tipo de montaje | Surface Mount (LQFP, gull-wing) |
| Estado RoHS | Compliant (per NXP product page) |
Configuración de pines de MC9S12DT256CMPV
| Pin 1 | TXCAN — msCAN transmit output |
| Pin 2 | RXCAN — msCAN receive input |
| Pin 3 | PAD0 — Port AD bit 0 / ATD0 analog input |
| Pin 4 | PAD1 — Port AD bit 1 / ATD0 analog input |
| Pin 5 | PAD2 — Port AD bit 2 / ATD0 analog input |
| Pin 6 | PAD3 — Port AD bit 3 / ATD0 analog input |
| Pin 7 | PAD4 — Port AD bit 4 / ATD0 analog input |
| Pin 8 | PAD5 — Port AD bit 5 / ATD0 analog input |
| Pin 9 | PAD6 — Port AD bit 6 / ATD0 analog input |
| Pin 10 | PAD7 — Port AD bit 7 / ATD0 analog input |
| Pin 11 | VSS1 — Ground (digital) |
| Pin 12 | VDD1 — Digital supply 5 V |
| Pin 13 | PA0 — Port A bit 0 / PWM channel |
| Pin 14 | PA1 — Port A bit 1 / PWM channel |
| Pin 15 | PA2 — Port A bit 2 / PWM channel |
| Pin 16 | PA3 — Port A bit 3 / PWM channel |
| Pin 17 | PA4 — Port A bit 4 / PWM channel |
| Pin 18 | PA5 — Port A bit 5 / PWM channel |
| Pin 19 | PA6 — Port A bit 6 / PWM channel |
| Pin 20 | PA7 — Port A bit 7 / PWM channel |
| Pin 21 | PB0 — Port B bit 0 / GPIO |
| Pin 22 | PB1 — Port B bit 1 / GPIO |
| Pin 23 | PB2 — Port B bit 2 / GPIO |
| Pin 24 | PB3 — Port B bit 3 / GPIO |
| Pin 25 | PB4 — Port B bit 4 / GPIO |
| Pin 26 | PB5 — Port B bit 5 / GPIO |
| Pin 27 | PB6 — Port B bit 6 / GPIO |
| Pin 28 | PB7 — Port B bit 7 / GPIO |
| Pin 29 | PC0 — Port C bit 0 / address/data bus |
| Pin 30 | PC1 — Port C bit 1 / address/data bus |
| Pin 31 | PC2 — Port C bit 2 / address/data bus |
| Pin 32 | PC3 — Port C bit 3 / address/data bus |
| Pin 33 | PC4 — Port C bit 4 / address/data bus |
| Pin 34 | PC5 — Port C bit 5 / address/data bus |
| Pin 35 | PC6 — Port C bit 6 / address/data bus |
| Pin 36 | PC7 — Port C bit 7 / address/data bus |
| Pin 37 | VSS2 — Ground (digital) |
| Pin 38 | VDD2 — Digital supply 5 V |
| Pin 39 | PE0 — Port E bit 0 / IRQ / XIRQ |
| Pin 40 | PE1 — Port E bit 1 / IRQ |
| Pin 41 | PE2 — Port E bit 2 / GPIO |
| Pin 42 | PE3 — Port E bit 3 / GPIO |
| Pin 43 | PE4 — Port E bit 4 / GPIO |
| Pin 44 | PE5 — Port E bit 5 / GPIO |
| Pin 45 | PE6 — Port E bit 6 / GPIO |
| Pin 46 | PE7 — Port E bit 7 / GPIO |
| Pin 47 | PF0 — Port F bit 0 / GPIO |
| Pin 48 | PF1 — Port F bit 1 / GPIO |
| Pin 49 | PF2 — Port F bit 2 / GPIO |
| Pin 50 | PF3 — Port F bit 3 / GPIO |
| Pin 51 | PF4 — Port F bit 4 / GPIO |
| Pin 52 | PF5 — Port F bit 5 / GPIO |
| Pin 53 | PF6 — Port F bit 6 / GPIO |
| Pin 54 | PF7 — Port F bit 7 / GPIO |
| Pin 55 | PG0 — Port G bit 0 / GPIO |
| Pin 56 | PG1 — Port G bit 1 / GPIO |
| Pin 57 | PG2 — Port G bit 2 / GPIO |
| Pin 58 | PG3 — Port G bit 3 / GPIO |
| Pin 59 | PG4 — Port G bit 4 / GPIO |
| Pin 60 | PG5 — Port G bit 5 / GPIO |
| Pin 61 | PG6 — Port G bit 6 / GPIO |
| Pin 62 | PG7 — Port G bit 7 / GPIO |
| Pin 63 | PH0 — Port H bit 0 / GPIO |
| Pin 64 | PH1 — Port H bit 1 / GPIO |
| Pin 65 | PH2 — Port H bit 2 / GPIO |
| Pin 66 | PH3 — Port H bit 3 / GPIO |
| Pin 67 | PH4 — Port H bit 4 / GPIO |
| Pin 68 | PH5 — Port H bit 5 / GPIO |
| Pin 69 | PH6 — Port H bit 6 / GPIO |
| Pin 70 | PH7 — Port H bit 7 / GPIO |
| Pin 71 | PJ0 — Port J bit 0 / GPIO |
| Pin 72 | PJ1 — Port J bit 1 / GPIO |
| Pin 73 | PJ2 — Port J bit 2 / GPIO |
| Pin 74 | PJ3 — Port J bit 3 / GPIO |
| Pin 75 | PJ4 — Port J bit 4 / GPIO |
| Pin 76 | PJ5 — Port J bit 5 / GPIO |
| Pin 77 | PJ6 — Port J bit 6 / GPIO |
| Pin 78 | PJ7 — Port J bit 7 / GPIO |
| Pin 79 | PK0 — Port K bit 0 / GPIO |
| Pin 80 | PK1 — Port K bit 1 / GPIO |
| Pin 81 | PK2 — Port K bit 2 / GPIO |
| Pin 82 | PK3 — Port K bit 3 / GPIO |
| Pin 83 | PK4 — Port K bit 4 / GPIO |
| Pin 84 | PK5 — Port K bit 5 / GPIO |
| Pin 85 | PK6 — Port K bit 6 / GPIO |
| Pin 86 | PK7 — Port K bit 7 / GPIO |
| Pin 87 | PL0 — Port L bit 0 / GPIO |
| Pin 88 | PL1 — Port L bit 1 / GPIO |
| Pin 89 | PL2 — Port L bit 2 / GPIO |
| Pin 90 | PL3 — Port L bit 3 / GPIO |
| Pin 91 | PL4 — Port L bit 4 / GPIO |
| Pin 92 | PL5 — Port L bit 5 / GPIO |
| Pin 93 | PL6 — Port L bit 6 / GPIO |
| Pin 94 | PL7 — Port L bit 7 / GPIO |
| Pin 95 | PM0 — Port M bit 0 / GPIO |
| Pin 96 | PM1 — Port M bit 1 / GPIO |
| Pin 97 | PM2 — Port M bit 2 / GPIO |
| Pin 98 | PM3 — Port M bit 3 / GPIO |
| Pin 99 | PM4 — Port M bit 4 / GPIO |
| Pin 100 | PM5 — Port M bit 5 / GPIO |
| Pin 101 | PM6 — Port M bit 6 / GPIO |
| Pin 102 | PM7 — Port M bit 7 / GPIO |
| Pin 103 | PS0 — Port S bit 0 / SPI1 / SCI1 |
| Pin 104 | PS1 — Port S bit 1 / SPI1 / SCI1 |
| Pin 105 | PS2 — Port S bit 2 / SPI1 / SCI1 |
| Pin 106 | PS3 — Port S bit 3 / SPI1 / SCI1 |
| Pin 107 | PS4 — Port S bit 4 / SPI1 / SCI1 |
| Pin 108 | PS5 — Port S bit 5 / SPI1 / SCI1 |
| Pin 109 | PS6 — Port S bit 6 / SPI1 / SCI1 |
| Pin 110 | PS7 — Port S bit 7 / SPI1 / SCI1 |
| Pin 111 | VDDR — Voltage regulator supply (5 V) |
| Pin 112 | VSS — Ground (return for VDDR) |
Aplicaciones típicas
MC9S12DT256CMPV es adecuado para 7 aplicacións: Automotive Body Control Module (BCM), Instrument Cluster and HMI Driver, HVAC Control Module, CAN Gateway and Network Node, Industrial CAN Node / PLC I/O, Door Module and Seat Controller, Body Electronics - Lighting Controller.
Automotive Body Control Module (BCM)
The MC9S12DT256CMPV is engineered for automotive body-control modules where it supervises lighting, wipers, door locks, and accessory loads. Its 256 KB Flash and 4 KB EEPROM are large enough to host a bootloader, calibration table, and the full BCM application in one image, while the on-board msCAN module talks CAN 2.0A/B at 500 kbps to the rest of the vehicle network. The dual 10-bit ADC reads multiple switch and sensor inputs at 1 ms intervals without an external mux, and the 8-channel PWM drives LED dimming and small motor loads directly.
Recomendado
Instrument Cluster and HMI Driver
The MC9S12DT256CMPV drives automotive instrument clusters including analog gauge stepper control, LCD segment drivers, and telltale LEDs. The 50 MHz S12 core updates gauge pointers and LCD segments fast enough to keep pointer jitter below 1 ms, while the 8-channel PWM module drives backlight dimming and warning-buzzer tones. Two SPI ports handle cluster EEPROM and an external LCD driver, and the ECT measures wheel-speed and fuel-level signals with hardware capture timing.
Recomendado
HVAC Control Module
In automotive HVAC control modules, the MC9S12DT256CMPV manages blower-speed PWM, mode-door position sensing, and CAN communication with the BCM and engine ECU. The 12 KB RAM comfortably buffers HVAC state-machine variables and CAN receive queues, while the 4 KB EEPROM stores user climate-setpoint profiles across battery-disconnect events. Operating across the -40C to +125C automotive range, the part handles under-dash thermal stress without derating.
Recomendado
CAN Gateway and Network Node
The MC9S12DT256CMPV is used as a CAN gateway or network node bridging multiple CAN buses in vehicles. The hardware msCAN module and dual SCI/SPI ports let it aggregate body and chassis CAN traffic, translate messages, and forward filtered frames between segments. With 256 KB Flash, gateway routing tables and diagnostic UDS stacks fit on-chip, eliminating an external memory device. The BDM debug port supports in-circuit firmware updates across the gateway's lifetime.
Recomendado
Industrial CAN Node / PLC I/O
Outside automotive, the MC9S12DT256CMPV serves industrial CANopen or DeviceNet nodes, PLC digital/analog I/O modules, and motor-control edge nodes. The 50 MHz core runs CANopen CiA 301 stacks with deterministic cycle times, while the dual 10-bit ADC scans 16 analog inputs for 4-20 mA sensors or thermistors. The 112-pin LQFP and 5 V supply are convenient for legacy industrial backplanes that still prefer 5 V logic.
Recomendado
Door Module and Seat Controller
Door modules and seat controllers use the MC9S12DT256CMPV to drive window lifters, mirror adjust, seat motors, and puddle lamps with the 8-channel PWM. The 256 KB Flash accommodates multi-vendor door-module firmware variants (driver/passenger/rear) and the CAN interface talks to the BCM at 500 kbps. Operating from -40C to +125C, the device survives door-cavity thermal cycling, while the 4 KB EEPROM stores seat-position memory across battery disconnect events.
Recomendado
Body Electronics - Lighting Controller
Daytime running light, adaptive headlight, and interior lighting controllers use the MC9S12DT256CMPV to drive high-current LED strings, read ambient light sensors, and CAN-report lighting faults. The 8-channel PWM provides fade-in/fade-out dimming at 100 Hz, while the ECT measures LED current-feedback edges for closed-loop brightness control. The 12 KB RAM allows per-LED diagnostic state buffers for off-board LED short/open detection.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S12DT256CMPV — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S12DT256BMPV | MC9S12DT128MPVE | MC9S12A512CPVE | MC9S12DG256CCPV |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-112 | LQFP-112 - same | LQFP-112 - same | LQFP-112 - same | LQFP-112 - same |
| Program Flash | 256 KB | 256 KB | 128 KB (-50%) | 512 KB (+100%) | 256 KB |
| RAM | 12 KB | 12 KB | 8 KB | 14 KB | 12 KB |
| EEPROM | 4 KB | 4 KB | 2 KB | 4 KB | 4 KB |
| Core / Max Bus Frequency | HCS12 / 50 MHz | HCS12 / 50 MHz | HCS12 / 50 MHz | HCS12 / 50 MHz | HCS12 / 50 MHz |
| CAN Modules | 1 x msCAN | 1 x msCAN | 1 x msCAN | 1 x msCAN | 1 x msCAN |
| ADC | 2 x 8-ch 10-bit | 2 x 8-ch 10-bit | 2 x 8-ch 10-bit | 2 x 8-ch 10-bit | 2 x 8-ch 10-bit |
| Temperature Grade | Automotive (-40C to +125C) | Automotive (-40C to +125C) | Automotive (-40C to +125C) | Automotive (-40C to +125C) | Automotive (-40C to +125C) |
Diferenciadores clave
- Largest on-chip Flash in the MC9S12DT256 sub-family (frente a MC9S12DT128MPVE)
- Latest C mask revision with errata fixes (frente a MC9S12DT256BMPV)
- Drop-in upgrade path to higher-memory variant (frente a MC9S12A512CPVE)
Notas de diseño
Estimated: With VIN=5 V, I_core ~ 50 mA active and 1 mA stop, the MCU's internal VDDR regulator dissipates up to 0.25 W. Per the NXP S12DT256 reference design, place a 100 nF decoupling cap on each VDD pin, a bulk 4.7 uF tantalum on VDDR, and a ferrite bead on the analog AVDD rail. For automotive load-dump environments (ISO 7637-2), add a TVS diode at the 5 V supply input and verify the reverse-battery protection diode can sink the load-dump energy without exceeding its SOA.
Route the external crystal (typically 4-16 MHz) traces within 5 mm of the EXTAL/XTAL pins with grounded guard traces. Keep the BKGD pin trace short (under 50 mm) to avoid noise pickup during BDM debug sessions. Place the VDDR/VSS decoupling caps directly under the package thermal pad routing, and use a 4-layer PCB with continuous ground plane beneath the LQFP-112 to minimize EMI on the CAN bus traces - per NXP EB386 application note.
Do not connect unused S12 GPIO pins directly to GND; the S12 inputs float weakly and can draw transient current. Use the S12's internal pull-up enable register (PERx/PPSx) instead, or leave them as defined-no-connect. Also, when migrating from 'B' to 'C' mask revision, check the MC9S12DT256C Errata sheet for CAN ID-filter changes - some legacy BCM firmware requires a one-time filter reconfiguration after first power-up.
Información de cumplimiento
AEC-Q100 qualified per NXP automotive MCU certification. Lead-free and halogen-free per NXP material declaration. Drop-in alternatives share the same LQFP-112 footprint.
