MC9S12XDT256CPV - 16-bit HCS12X MCU, 256KB Flash, 112-LQFP | NXP
MPN: MC9S12XDT256CPV ✗ Cuối đờiMC9S12XDT256CPV Tóm tắt
An HCS12X microcontroller (MCU) is a 16-bit automotive-grade microcontroller that combines the legacy HCS12 instruction set with an XGATE peripheral co-processor to offload interrupt-driven tasks. It sits in the broader category: MCU -> 16-bit MCU -> HCS12X -> automotive MCU -> embedded processor -> semiconductor. The XGATE engine delivers up to 80 MIPS on peripheral events while the S12X CPU runs the application code, enabling deterministic real-time response in body, chassis, and gateway ECUs.
Key specifications include 256KB of program Flash with 4KB EEPROM and 12KB RAM, an 80 MHz XGATE peripheral co-processor, a 25/40 MHz CPU bus, an enhanced Capture Timer (ECT), four PWM channels with 8-bit or 16-bit resolution, up to two CAN 2.0A/B modules, two SCI, two SPI, an I2C bus, and an 8-channel 10-bit ATD (ADC). The 112-LQFP industrial temperature grade supports -40C to +85C, suiting under-the-hood and body-control modules.
Architecturally the device pairs the HCS12X CPU with the XGATE RISC co-processor, allowing peripheral DMA-style servicing. It supports background-debug mode (BDM), on-chip voltage regulator, and a periodic interrupt timer. The 112-LQFP package supports external address/data bus expansion, suitable for multi-drop automotive networks.
Typical applications include automotive body control, CAN/LIN gateway nodes, HVAC modules, instrument cluster MCUs, and industrial multiplexing controllers. The wide 2.5V/5V supply range simplifies integration into legacy 5V analog/mixed-signal automotive subsystems while preserving modern peripherals.
When designing with this part, ensure decoupling caps are placed close to VDD/VSS pairs and that unused pins are configured to a defined state in software to avoid shoot-through. The XGATE initialization must be performed before peripheral interrupts are enabled.
This page synthesizes distributor pricing, automotive-same-family drop-in alternatives, and practical firmware boot notes that complement the manufacturer datasheet reference manual.
Bộ thay thế dễ dàng lắp đặt cho MC9S12XDT256CPV — 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 MC9S12XDT256CPV (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Processor, Supply Voltage, Timers.
MC9S12XDT512MAA
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12DT256CPVE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S12DG256CCPV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC9S12A512CPVE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC9S12XDT256CPV Tỷ lệ tối đa & tính chất điện
| Core | HCS12X (16-bit CISC with XGATE co-processor) |
| Family | S12XD |
| Program Memory | 256 KB Flash |
| EEPROM | 4 KB |
| RAM | 12 KB |
| CPU Bus Frequency | 25 MHz / 40 MHz (max) |
| XGATE Co-processor | 80 MHz, RISC-style peripheral engine |
| Điện áp cung cấp | 2.5 V / 5 V (dual-range) |
| Hộp | 112-LQFP (20 x 20 mm, 0.65 mm pitch) |
| Số chân | 112 |
| Temperature Grade | Industrial (-40C to +85C) |
| Kiểu lắp đặt | Surface Mount |
| CAN Modules | Up to 2 x CAN 2.0A/B (msCAN) |
| SCI / SPI / I2C | 2 x SCI, 2 x SPI, 1 x I2C |
| ADC | 8-channel, 10-bit ATD |
| PWM Channels | 4 x 8/16-bit PWM |
| Timers | ECT (Enhanced Capture Timer), PIT, RTI |
| Debug Interface | BDM (Background Debug Mode) |
Hướng dẫn cấu hình chân MC9S12XDT256CPV 112-lqfp (20 x 20 mm, 0.65 mm pitch)
Cấu hình chân cho MC9S12XDT256CPV (112-lqfp (20 x 20 mm, 0.65 mm pitch) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MC9S12XDT256CPV.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MC9S12XDT256CPV phù hợp cho 6 Áp dụngs: Automotive Body Control Module, CAN/LIN Gateway ECU, HVAC Climate Control Module, Instrument Cluster Display Controller, Industrial Multiplexing Controller, Body Electronics Sensor Hub.
Automotive Body Control Module
The MC9S12XDT256CPV fits automotive BCM applications because it provides 256 KB Flash, 12 KB RAM, 4 KB EEPROM, and two CAN msCAN modules needed for body-network multiplexing. Its XGATE co-processor at 80 MHz offloads CAN message servicing and PWM updates, leaving the main HCS12X CPU free to run logical door/window/lighting state machines. Operating from a 5V regulated battery rail at industrial temperature (-40C to +85C), it survives underhood and behind-dash thermal conditions. Reference peripherals include ECT timer-driven window anti-pinch detection and the 10-bit ADC for switch-bouncing debounce of physical inputs.
Được đề xuất
CAN/LIN Gateway ECU
The MC9S12XDT256CPV suits CAN/LIN gateway applications because dual msCAN channels and SCI/SPI peripherals allow bridges between in-vehicle networks. Placing a gateway ECU in chassis domains (drive, comfort, powertrain) benefits from the 80 MHz XGATE co-processor that handles high-throughput message routing without CPU throttling. The 256 KB Flash region stores routing tables and diagnostics firmware, while the 4 KB EEPROM preserves CAN IDs and feature flags across battery disconnect events. Industrial temperature grade and the wide 2.5V/5V supply range support integration with 5V analog sensor networks common in 2000s-era vehicle platforms.
Được đề xuất
HVAC Climate Control Module
In HVAC control modules the MC9S12XDT256CPV supports dual-zone climate algorithms through the 8-channel 10-bit ATD for mixed-air temperature sensors, NTC monitoring, and stepper motor PWM outputs. The ECT and PWM channels operate blend and mode doors precisely using hardware timers, freeing the CPU from interrupt overhead. The 12 KB RAM holds closed-loop control loops and defrost schedules, while the 4 KB EEPROM non-volatilely stores user-set temperatures and driver preferences across battery disconnects. Industrial-grade -40C to +85C operation enables fast boot at sub-zero cabin temperatures.
Được đề xuất
Instrument Cluster Display Controller
The MC9S12XDT256CPV drives analog/digital instrument clusters using the integrated SPI and PWM channels for dimming gauges and a stepper motor driver interface. The XGATE co-processor services SPI-driven display controllers and LIN/K-Line diagnostics in real time, while the HCS12X CPU runs state-based animations and warning logic. With 12 KB RAM the part buffers gauge sweeps and CAN-received vehicle speed signals; 4 KB EEPROM stores mileage and warning history. Industrial temperature grade and 5V tolerant pins simplify integration with legacy gauge-driver circuitry.
Được đề xuất
Industrial Multiplexing Controller
Beyond automotive, the MC9S12XDT256CPV suits industrial RS-485 and CAN multiplexing controllers used in factory automation and process control. Dual CAN interfaces support DeviceNet and CANopen protocols, while the ECT timer provides hardware event capture for high-speed counters. Operating across 2.5V to 5V and industrial temperature, the part replaces legacy 8051 designs needing more deterministic interrupt response. The 4 KB EEPROM stores calibration constants and node IDs in non-volatile memory for field serviceability.
Được đề xuất
Body Electronics Sensor Hub
The MC9S12XDT256CPV aggregates automotive sensors (parking aid, rain/light, occupancy, kicker) through the 8-channel 10-bit ADC and SPI/I2C peripherals. The XGATE co-processor services sensor I2C transactions at high rates without overloading the main CPU, allowing quick response to wake-up events. The 12 KB RAM buffers simultaneous multi-sensor samples; 256 KB Flash stores sensor calibration and runtime diagnostics. Industrial temperature grade enables reliable operation across extreme cabin and chassis conditions, and 5V-tolerant pins interface with legacy 5V sensors.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S12XDT256CPV — 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 | MC9S12XDT512MAA | MC9S12DT256CPVE | MC9S12DG256CCPV | MC9S12A512CPVE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20 mm) | 112-LQFP - same | 112-LQFP - same | 112-LQFP - same | 112-LQFP - same |
| Core | HCS12X + XGATE | HCS12X + XGATE | HCS12 (no XGATE) | HCS12 (no XGATE) | HCS12 (no XGATE) |
| Program Flash | 256 KB | 512 KB | 256 KB | 256 KB | 512 KB |
| RAM | 12 KB | 32 KB | 12 KB | 12 KB | 14 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| CPU Bus Frequency | 40 MHz | 40 MHz | 25 MHz | 25 MHz | 25 MHz |
| XGATE Co-processor | 80 MHz | 80 MHz | Not available | Not available | Not available |
| CAN Modules | 2 x msCAN | 2 x msCAN | 2 x msCAN | 2 x msCAN | 2 x msCAN |
| Lifecycle | NRND | Active | Active (legacy S12D) | NRND | NRND |
Bảo phân biệt quan trọng
- Integrated 80 MHz XGATE co-processor for peripheral offload (vsMC9S12DT256CPVE (legacy S12D, no XGATE))
- Higher CPU bus speed (40 MHz) than legacy MC9S12DT256 (vsMC9S12DT256CPVE (25 MHz CPU bus))
- Same S12XD pin-compatible migration path to 512 KB Flash (vsMC9S12XDT512MAA (active, 512 KB Flash))
Ghi chú thiết kế
Estimated: At a 5V VDD supplying 60 mA active and 50 uA Stop-mode current, design a decoupling network with 1x 4.7 uF + 2x 100 nF ceramic caps placed within 5 mm of each VDD/VSSX pair. The on-chip voltage regulator generates 2.5 V for the core; ensure VDDR (regulator ballast) has a 4.7 uF / low-ESR cap to GND. For Stop-mode designs, verify the RTI wake source is enabled in the MSCAN interrupt mask and that the BDM pin is left high-Z to avoid leakage.
For the 112-LQFP (0.65 mm pitch), use a 4-layer PCB with continuous VDD and GND planes under the MCU. Estimated: keep via stitching pitch below 3 mm around the perimeter to provide a low-impedance return for ADC inputs and ECT signals. Place external crystal traces within 5 mm of EXTAL/XTAL with short, guarded routing to avoid EMI coupling into the bus clock. Leave the no-connect pin footprint intact for test pads.
Beware three common pitfalls: (1) XGATE initialization order - the XGATE cannot run before PLL lock is acquired; gate interrupt sources with a software barrier. (2) EEPROM timing - wait for ECNFG CCIE before issuing EEPROM commands, or risk lost write cycles. (3) Background Debug Mode (BKGD) - leaving BKGD floating can cause spurious reset entries; tie to VDD via 10 kOhm pull-up. These three pitfalls match the most common S12XD field returns.
Estimated: MSCAN bus signals require termination only at the cable ends (120 ohm); do not intermediate-terminate on the MCU board. Use a 6.8 nF to 10 nF series cap on each CAN_H/CAN_L pin to the transceiver for EMI suppression. ECT capture pins are sensitive to noise - guard with a 33 ohm series resistor if routed near switching nodes. Keep ATD analog traces short and routed over a single unbroken ground plane.
Thông tin tuân thủ
Compliance certifications were not included in the verified web data; consult NXP product compliance documentation directly (npx.com part MC9S12XDT256CPV) for authoritative RoHS, REACH, and AEC-Q100 status. NRND lifecycle status noted.
