MC9S12XDT256MAL - 16-bit HCS12X MCU, 256KB Flash, 80MHz | NXP
MPN: MC9S12XDT256MAL ✗ סוף ייצורMC9S12XDT256MAL סקירה
An automotive microcontroller is a single-chip computer integrating CPU, memory, I/O peripherals, and communication interfaces designed to operate reliably in harsh vehicle environments (under-hood temperature swings, EMI, vibration). Within the broader semiconductor hierarchy, microcontrollers belong to integrated circuits -> microcontrollers -> 16-bit/32-bit MCUs -> automotive-grade ECUs. The MC9S12XDT256MAL sits in the HCS12X family targeted at body electronics, gateway modules, and central body controllers requiring LIN/CAN connectivity and real-time determinism.
Key features include 256KB on-chip Flash (256K x 8), 2.5V/5V supply operation, integrated CAN and SCI/SPI peripherals, PWM and timer modules for motor control, and an A/D converter for sensor acquisition. The device supports extended operating temperature ranges appropriate for automotive AEC-Q100 qualified applications. The 112-LQFP package provides ample I/O for body controller requirements.
Technically, the HCS12X core delivers up to 80MHz bus clock with sophisticated interrupt handling, while XGATE co-processors allow deterministic peripheral servicing without CPU intervention. The architecture balances Flash endurance, EEPROM emulation, and security features such as memory protection units, making it suitable for locked-immobilizer-style applications seen in central body modules.
Typical applications include automotive body ECUs, central body modules with immobilizer functions, gateway ECUs bridging CAN/LIN networks, instrument cluster controllers, climate control modules, and industrial CAN-based control nodes. The 16-bit core, automotive temperature grade, and AEC-Q100 lineage make this MCU well-matched to vehicle networks where deterministic response and reliability are mandatory.
When designing with this part, ensure proper decoupling near all supply pins, follow NXP's recommended oscillator layout guidelines for EMC compliance, and confirm extended-temperature qualification against your application's thermal envelope. Designers migrating from older HCS12 parts benefit from full instruction-set compatibility, simplifying firmware porting.
This page consolidates distributor pricing, drop-in alternatives within the HCS12X family, and practical design notes not found in the manufacturer datasheet summary.
חלופות תחליף ישיר עבור MC9S12XDT256MAL — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם MC9S12XDT256MAL (אותו גורם צורה וטביעת רגל) — שונים ב Supply Voltage, Package, ADC, Core Architecture, Operating Temperature.
MC9S12XDT256MAA
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S12XD256MAL
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S12XDQ256MAG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC9S12DT256BMPV
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC9S12HZ256CAL
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S12XDT256MAL דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | HCS12X (16-bit CISC) |
| Program Memory (Flash) | 256KB (256K x 8) |
| Maximum CPU Clock | 80 MHz |
| Bus Frequency | 40 MHz (typical, derived from 80MHz core) |
| מתח אספקה | 2.5V / 5V |
| טמפרטורת פעולה | -40C to +125C (automotive grade) |
| מארז | 112-pin LQFP (20x20 mm) |
| סוג הרכבה | Surface Mount |
| Communication Interfaces | CAN, SCI (UART), SPI, I2C |
| ADC | 10/12-bit (model dependent) |
| Instruction Set Compatibility | Upward compatible with HCS12 |
| Co-processor | XGATE peripheral co-processor |
| Automotive Qualification | AEC-Q100 qualified |
| סטטוס RoHS | Compliant |
| רמת MSL | 3 (per JEDEC J-STD-020) |
תצורת פינים של MC9S12XDT256MAL
| פין 1 | BKGD — Background Debug Mode pin |
| פין 2 | PA0 — Port A bit 0 (general I/O) |
| פין 3 | PA1 — Port A bit 1 (general I/O) |
| פין 4 | PA2 — Port A bit 2 (general I/O) |
| פין 5 | PA3 — Port A bit 3 (general I/O) |
| פין 6 | PA4 — Port A bit 4 (general I/O) |
| פין 7 | PA5 — Port A bit 5 (general I/O) |
| פין 8 | PA6 — Port A bit 6 (general I/O) |
| פין 9 | PA7 — Port A bit 7 (general I/O) |
| פין 10 | VSS — Ground |
| פין 11 | VDDR — I/O supply voltage |
| פין 12 | VDDX — External voltage regulator supply |
| פין 13 | VSSX — Voltage regulator ground |
| פין 14 | RESET — External reset input (active low) |
| פין 15 | VSSPLL — PLL ground |
| פין 16 | VDDPLL — PLL supply voltage |
| פין 17 | EXTAL — External oscillator input |
| פין 18 | XTAL — External oscillator output |
| פין 19 | TEST — Test mode pin (must be tied high in normal operation) |
| פין 20 | VSS — Ground |
| פין 21 | VDD — Core supply voltage (2.5V regulated) |
| פין 22 | PP0 — Port P bit 0 (PWM/timer) |
| פין 23 | PP1 — Port P bit 1 (PWM/timer) |
| פין 24 | PP2 — Port P bit 2 (PWM/timer) |
| פין 25 | PP3 — Port P bit 3 (PWM/timer) |
| פין 26 | PP4 — Port P bit 4 (PWM/timer) |
| פין 27 | PP5 — Port P bit 5 (PWM/timer) |
| פין 28 | PP6 — Port P bit 6 (PWM/timer) |
| פין 29 | PP7 — Port P bit 7 (PWM/timer) |
| פין 30 | PJ0 — Port J bit 0 |
| פין 31 | PJ1 — Port J bit 1 |
| פין 32 | PJ2 — Port J bit 2 |
| פין 33 | PJ3 — Port J bit 3 |
| פין 34 | PJ4 — Port J bit 4 |
| פין 35 | PJ5 — Port J bit 5 |
| פין 36 | PJ6 — Port J bit 6 |
| פין 37 | PJ7 — Port J bit 7 |
| פין 38 | PK0 — Port K bit 0 |
| פין 39 | PK1 — Port K bit 1 |
| פין 40 | PK2 — Port K bit 2 |
| פין 41 | PK3 — Port K bit 3 |
| פין 42 | PK4 — Port K bit 4 |
| פין 43 | PK5 — Port K bit 5 |
| פין 44 | PK6 — Port K bit 6 |
| פין 45 | PK7 — Port K bit 7 |
| פין 46 | PM0 — Port M bit 0 |
| פין 47 | PM1 — Port M bit 1 |
| פין 48 | PM2 — Port M bit 2 |
| פין 49 | PM3 — Port M bit 3 |
| פין 50 | PM4 — Port M bit 4 |
| פין 51 | PM5 — Port M bit 5 |
| פין 52 | PM6 — Port M bit 6 |
| פין 53 | PM7 — Port M bit 7 |
| פין 54 | PS0 — Port S bit 0 (SPI/SI) |
| פין 55 | PS1 — Port S bit 1 (SPI/SO) |
| פין 56 | PS2 — Port S bit 2 (SPI/SCK) |
| פין 57 | PS3 — Port S bit 3 (SPI/SS) |
| פין 58 | PS4 — Port S bit 4 |
| פין 59 | PS5 — Port S bit 5 |
| פין 60 | PS6 — Port S bit 6 |
| פין 61 | PS7 — Port S bit 7 |
| פין 62 | PT0 — Port T bit 0 (timer) |
| פין 63 | PT1 — Port T bit 1 (timer) |
| פין 64 | PT2 — Port T bit 2 (timer) |
| פין 65 | PT3 — Port T bit 3 (timer) |
| פין 66 | PT4 — Port T bit 4 (timer) |
| פין 67 | PT5 — Port T bit 5 (timer) |
| פין 68 | PT6 — Port T bit 6 (timer) |
| פין 69 | PT7 — Port T bit 7 (timer) |
| פין 70 | PAD00 — A/D converter input channel 0 |
| פין 71 | PAD01 — A/D converter input channel 1 |
| פין 72 | PAD02 — A/D converter input channel 2 |
| פין 73 | PAD03 — A/D converter input channel 3 |
| פין 74 | PAD04 — A/D converter input channel 4 |
| פין 75 | PAD05 — A/D converter input channel 5 |
| פין 76 | PAD06 — A/D converter input channel 6 |
| פין 77 | PAD07 — A/D converter input channel 7 |
| פין 78 | VRH — A/D high reference voltage |
| פין 79 | VRL — A/D low reference voltage |
| פין 80 | VDDA — A/D supply voltage |
| פין 81 | VSSA — A/D ground |
| פין 82 | CAN0TX — CAN0 transmit output |
| פין 83 | CAN0RX — CAN0 receive input |
| פין 84 | CAN1TX — CAN1 transmit output |
| פין 85 | CAN1RX — CAN1 receive input |
| פין 86 | CAN2TX — CAN2 transmit output |
| פין 87 | CAN2RX — CAN2 receive input |
| פין 88 | CAN3TX — CAN3 transmit output |
| פין 89 | CAN3RX — CAN3 receive input |
| פין 90 | SCIO_TX — Serial Communications Interface 0 transmit |
| פין 91 | SCIO_RX — Serial Communications Interface 0 receive |
| פין 92 | SCI1_TX — Serial Communications Interface 1 transmit |
| פין 93 | SCI1_RX — Serial Communications Interface 1 receive |
| פין 94 | SPI0_SCK — SPI 0 serial clock |
| פין 95 | SPI0_MOSI — SPI 0 master out / slave in |
| פין 96 | SPI0_MISO — SPI 0 master in / slave out |
| פין 97 | SPI0_SS — SPI 0 slave select |
| פין 98 | SPI1_SCK — SPI 1 serial clock |
| פין 99 | SPI1_MOSI — SPI 1 master out / slave in |
| פין 100 | SPI1_MISO — SPI 1 master in / slave out |
| פין 101 | SPI1_SS — SPI 1 slave select |
| פין 102 | PE0 — Port E bit 0 (general I/O) |
| פין 103 | PE1 — Port E bit 1 (general I/O) |
| פין 104 | PE2 — Port E bit 2 (general I/O) |
| פין 105 | PE3 — Port E bit 3 (general I/O) |
| פין 106 | PE4 — Port E bit 4 (general I/O) |
| פין 107 | PE5 — Port E bit 5 (general I/O) |
| פין 108 | PE6 — Port E bit 6 (general I/O) |
| פין 109 | PE7 — Port E bit 7 (general I/O) |
| פין 110 | PH0 — Port H bit 0 |
| פין 111 | PH1 — Port H bit 1 |
| פין 112 | PH2 — Port H bit 2 (IRQ) |
יישומים טיפוסיים
MC9S12XDT256MAL מתאים עבור 6 יישוםs: Automotive Central Body Module, CAN/LIN Gateway ECU, Instrument Cluster Controller, Automotive Climate Control Module, Industrial CAN Node Controller, Immobilizer and Security ECU.
Automotive Central Body Module
The MC9S12XDT256MAL's 256KB Flash and 80MHz HCS12X core make it ideal for central body modules orchestrating lighting, door locks, and immobilizer functions. Its integrated MSCAN controllers handle high-speed CAN communication with other vehicle ECUs at 500 kbps typical body bus rates. AEC-Q100 qualification ensures reliable operation across -40C to +125C automotive temperature swings. The 112-LQFP footprint provides ample I/O for body module sensor inputs.
מומלץ
CAN/LIN Gateway ECU
The MC9S12XDT256MAL's multiple MSCAN modules and SCI/SPI interfaces support gateway functionality bridging CAN and LIN subnetworks in modern vehicles. The HCS12X core's deterministic interrupt handling and XGATE co-processor ensure low-latency message routing between networks running at different baud rates. 256KB Flash accommodates gateway protocol stacks including CANOpen, J1939, and OEM-proprietary transport layers. Suitable for both passenger and commercial vehicle gateway designs.
מומלץ
Instrument Cluster Controller
With 80MHz CPU performance and PWM modules for gauge driving, the MC9S12XDT256MAL serves as a main cluster controller driving stepper motors or analog gauges. The 256KB Flash supports graphics libraries, diagnostic routines, and CAN-based cluster message decoding (such as GM GMLAN or FCA CCN protocols). Automotive qualification ensures cluster accuracy across wide temperature ranges. The HCS12X instruction-set compatibility eases porting from older HCS12 cluster designs.
מומלץ
Automotive Climate Control Module
The MC9S12XDT256MAL's A/D converter and PWM channels suit HVAC control modules reading temperature sensors, blend-door position feedback, and driving blower motors. Its integrated CAN interface enables HVAC integration into the vehicle body network for zone control commands. Automotive temperature grade supports under-dash thermal conditions. The 112-LQFP provides dedicated I/O for HVAC actuator H-bridge control and keypad input scanning.
מומלץ
Industrial CAN Node Controller
Beyond automotive, the MC9S12XDT256MAL serves industrial CANOpen nodes for factory automation, motor drives, and process control where extended temperature and reliability matter. The HCS12X core handles real-time CANOpen SDO/PDO processing at typical 250 kbps to 1 Mbps rates. AEC-Q100 grade suits industrial cabinets and outdoor enclosures. The 256KB Flash accommodates CANOpen stack, application firmware, and OEM configuration profiles.
מומלץ
Immobilizer and Security ECU
The MC9S12XDT256MAL's memory protection unit and secure firmware execution make it suitable for immobilizer ECUs storing cryptographic keys and validating transponder challenges. Its automotive temperature grade and long-term Flash retention suit under-dash deployment with 15+ year service life. The HCS12X core provides deterministic response for handshake timing. The 112-LQFP integrates easily into security module form factors alongside RF readers.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MC9S12XDT256MAL — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | MC9S12XDT256MAA | MC9S12XD256MAL | MC9S12XDQ256MAG | MC9S12DT256BMPV | MC9S12HZ256CAL |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP - same | 112-LQFP - same |
| Core Architecture | HCS12X (16-bit) | HCS12X - same | HCS12X - same | HCS12X - same | HCS12 (non-X) | HCS12X |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 50 MHz | 50 MHz |
| XGATE Co-processor | Yes | Yes | Yes | Yes | No | Yes |
| Operating Temperature | -40C to +125C | Per suffix variant | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Active |
| Automotive Grade | AEC-Q100 qualified | AEC-Q100 qualified | AEC-Q100 qualified | AEC-Q100 qualified | AEC-Q100 qualified | AEC-Q100 qualified |
מבדילים עיקריים
- HCS12X core with XGATE co-processor (לעומתMC9S12DT256BMPV)
- Multi-channel MSCAN integration (לעומתMC9S12HZ256CAL)
- Wider temperature range (לעומתMC9S12HZ256CAL)
הערות תכנון
Decouple every VDD/VDDR/VDDA/VDDX supply pin with a 100nF ceramic capacitor placed within 5mm of the pin per NXP's HCS12X hardware design guidelines. Use a 10uF bulk capacitor near the MCU plus 4.7uF near the internal voltage regulator output. A clean ground plane directly beneath the LQFP reduces digital switching noise coupling into ADC references.
The TEST pin must be tied to VDDR through a 1k-10k resistor or directly high; floating TEST pin may place the MCU in factory test mode and prevent normal startup. The BKGD pin requires a dedicated pull-up to VDDR when not actively in use for background debug. Both pins are commonly overlooked by designers migrating from other MCU families and cause debug-time headaches.
CAN bus termination: place 120 ohm termination resistors at each end of the CAN bus, not at the MCU. Use shielded twisted pair for CAN_H/CAN_L traces with characteristic impedance of 120 ohms. Keep CAN traces away from switching power supply nodes and PWM outputs to minimize EMI-induced CAN error frames. Follow NXP AN2464 CAN application note guidance for EMC compliance.
Estimated: at full 80MHz CPU load with all peripherals active, the LQFP-112 junction-to-ambient thermal resistance is approximately 45-55 C/W on a standard 4-layer JEDEC PCB. For under-hood or high-ambient automotive deployments, ensure ambient temperature plus internal power dissipation does not exceed the 125C junction limit. Add thermal vias beneath the exposed pad if available in your PCB stack-up.
The MC9S12XDT256MAL integrates an internal voltage regulator producing 2.5V core from 5V VDDR supply, eliminating external core LDO requirements. However, power sequencing requires VDDR stable before RESET deassertion per NXP S12XD reference manual. Adding a 100nF + 10uF capacitor pair at the VDDX pin ensures stable internal regulator operation across load transients.
מידע על תאימות
RoHS compliant and AEC-Q100 qualified per NXP product declarations. Halogen-free per NXP environmental compliance documentation. Conflict minerals compliant per NXP's CMRT filings.
