MC9S12XDT256MAL - 16-bit HCS12X MCU, 256KB Flash, 80MHz | NXP
MPN: MC9S12XDT256MAL ✗ Cuối đờiMC9S12XDT256MAL Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC9S12XDT256MAL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC9S12XDT256MAL (cùng hình factor và footprint) — khác nhau ở Supply Voltage, Package, ADC, Core Architecture, Operating Temperature.
MC9S12XDT256MAA
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XD256MAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDQ256MAG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12DT256BMPV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S12HZ256CAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12XDT256MAL Tỷ lệ tối đa & tính chất điện
| 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) |
| Điện áp cung cấp | 2.5V / 5V |
| Nhiệt độ hoạt động | -40C to +125C (automotive grade) |
| Hộp | 112-pin LQFP (20x20 mm) |
| Kiểu lắp đặt | 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 |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
Cấu hình chân MC9S12XDT256MAL
| Chân 1 | BKGD — Background Debug Mode pin |
| Chân 2 | PA0 — Port A bit 0 (general I/O) |
| Chân 3 | PA1 — Port A bit 1 (general I/O) |
| Chân 4 | PA2 — Port A bit 2 (general I/O) |
| Chân 5 | PA3 — Port A bit 3 (general I/O) |
| Chân 6 | PA4 — Port A bit 4 (general I/O) |
| Chân 7 | PA5 — Port A bit 5 (general I/O) |
| Chân 8 | PA6 — Port A bit 6 (general I/O) |
| Chân 9 | PA7 — Port A bit 7 (general I/O) |
| Chân 10 | VSS — Ground |
| Chân 11 | VDDR — I/O supply voltage |
| Chân 12 | VDDX — External voltage regulator supply |
| Chân 13 | VSSX — Voltage regulator ground |
| Chân 14 | RESET — External reset input (active low) |
| Chân 15 | VSSPLL — PLL ground |
| Chân 16 | VDDPLL — PLL supply voltage |
| Chân 17 | EXTAL — External oscillator input |
| Chân 18 | XTAL — External oscillator output |
| Chân 19 | TEST — Test mode pin (must be tied high in normal operation) |
| Chân 20 | VSS — Ground |
| Chân 21 | VDD — Core supply voltage (2.5V regulated) |
| Chân 22 | PP0 — Port P bit 0 (PWM/timer) |
| Chân 23 | PP1 — Port P bit 1 (PWM/timer) |
| Chân 24 | PP2 — Port P bit 2 (PWM/timer) |
| Chân 25 | PP3 — Port P bit 3 (PWM/timer) |
| Chân 26 | PP4 — Port P bit 4 (PWM/timer) |
| Chân 27 | PP5 — Port P bit 5 (PWM/timer) |
| Chân 28 | PP6 — Port P bit 6 (PWM/timer) |
| Chân 29 | PP7 — Port P bit 7 (PWM/timer) |
| Chân 30 | PJ0 — Port J bit 0 |
| Chân 31 | PJ1 — Port J bit 1 |
| Chân 32 | PJ2 — Port J bit 2 |
| Chân 33 | PJ3 — Port J bit 3 |
| Chân 34 | PJ4 — Port J bit 4 |
| Chân 35 | PJ5 — Port J bit 5 |
| Chân 36 | PJ6 — Port J bit 6 |
| Chân 37 | PJ7 — Port J bit 7 |
| Chân 38 | PK0 — Port K bit 0 |
| Chân 39 | PK1 — Port K bit 1 |
| Chân 40 | PK2 — Port K bit 2 |
| Chân 41 | PK3 — Port K bit 3 |
| Chân 42 | PK4 — Port K bit 4 |
| Chân 43 | PK5 — Port K bit 5 |
| Chân 44 | PK6 — Port K bit 6 |
| Chân 45 | PK7 — Port K bit 7 |
| Chân 46 | PM0 — Port M bit 0 |
| Chân 47 | PM1 — Port M bit 1 |
| Chân 48 | PM2 — Port M bit 2 |
| Chân 49 | PM3 — Port M bit 3 |
| Chân 50 | PM4 — Port M bit 4 |
| Chân 51 | PM5 — Port M bit 5 |
| Chân 52 | PM6 — Port M bit 6 |
| Chân 53 | PM7 — Port M bit 7 |
| Chân 54 | PS0 — Port S bit 0 (SPI/SI) |
| Chân 55 | PS1 — Port S bit 1 (SPI/SO) |
| Chân 56 | PS2 — Port S bit 2 (SPI/SCK) |
| Chân 57 | PS3 — Port S bit 3 (SPI/SS) |
| Chân 58 | PS4 — Port S bit 4 |
| Chân 59 | PS5 — Port S bit 5 |
| Chân 60 | PS6 — Port S bit 6 |
| Chân 61 | PS7 — Port S bit 7 |
| Chân 62 | PT0 — Port T bit 0 (timer) |
| Chân 63 | PT1 — Port T bit 1 (timer) |
| Chân 64 | PT2 — Port T bit 2 (timer) |
| Chân 65 | PT3 — Port T bit 3 (timer) |
| Chân 66 | PT4 — Port T bit 4 (timer) |
| Chân 67 | PT5 — Port T bit 5 (timer) |
| Chân 68 | PT6 — Port T bit 6 (timer) |
| Chân 69 | PT7 — Port T bit 7 (timer) |
| Chân 70 | PAD00 — A/D converter input channel 0 |
| Chân 71 | PAD01 — A/D converter input channel 1 |
| Chân 72 | PAD02 — A/D converter input channel 2 |
| Chân 73 | PAD03 — A/D converter input channel 3 |
| Chân 74 | PAD04 — A/D converter input channel 4 |
| Chân 75 | PAD05 — A/D converter input channel 5 |
| Chân 76 | PAD06 — A/D converter input channel 6 |
| Chân 77 | PAD07 — A/D converter input channel 7 |
| Chân 78 | VRH — A/D high reference voltage |
| Chân 79 | VRL — A/D low reference voltage |
| Chân 80 | VDDA — A/D supply voltage |
| Chân 81 | VSSA — A/D ground |
| Chân 82 | CAN0TX — CAN0 transmit output |
| Chân 83 | CAN0RX — CAN0 receive input |
| Chân 84 | CAN1TX — CAN1 transmit output |
| Chân 85 | CAN1RX — CAN1 receive input |
| Chân 86 | CAN2TX — CAN2 transmit output |
| Chân 87 | CAN2RX — CAN2 receive input |
| Chân 88 | CAN3TX — CAN3 transmit output |
| Chân 89 | CAN3RX — CAN3 receive input |
| Chân 90 | SCIO_TX — Serial Communications Interface 0 transmit |
| Chân 91 | SCIO_RX — Serial Communications Interface 0 receive |
| Chân 92 | SCI1_TX — Serial Communications Interface 1 transmit |
| Chân 93 | SCI1_RX — Serial Communications Interface 1 receive |
| Chân 94 | SPI0_SCK — SPI 0 serial clock |
| Chân 95 | SPI0_MOSI — SPI 0 master out / slave in |
| Chân 96 | SPI0_MISO — SPI 0 master in / slave out |
| Chân 97 | SPI0_SS — SPI 0 slave select |
| Chân 98 | SPI1_SCK — SPI 1 serial clock |
| Chân 99 | SPI1_MOSI — SPI 1 master out / slave in |
| Chân 100 | SPI1_MISO — SPI 1 master in / slave out |
| Chân 101 | SPI1_SS — SPI 1 slave select |
| Chân 102 | PE0 — Port E bit 0 (general I/O) |
| Chân 103 | PE1 — Port E bit 1 (general I/O) |
| Chân 104 | PE2 — Port E bit 2 (general I/O) |
| Chân 105 | PE3 — Port E bit 3 (general I/O) |
| Chân 106 | PE4 — Port E bit 4 (general I/O) |
| Chân 107 | PE5 — Port E bit 5 (general I/O) |
| Chân 108 | PE6 — Port E bit 6 (general I/O) |
| Chân 109 | PE7 — Port E bit 7 (general I/O) |
| Chân 110 | PH0 — Port H bit 0 |
| Chân 111 | PH1 — Port H bit 1 |
| Chân 112 | PH2 — Port H bit 2 (IRQ) |
Ứng dụng tiêu biểu
MC9S12XDT256MAL phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12XDT256MAL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- HCS12X core with XGATE co-processor (vsMC9S12DT256BMPV)
- Multi-channel MSCAN integration (vsMC9S12HZ256CAL)
- Wider temperature range (vsMC9S12HZ256CAL)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
