MC9S12XHZ256VAG - 16-bit MCU 256KB Flash 80MHz 144-LQFP | NXP
料号： MC9S12XHZ256VAG ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $24.16 | $24.16 |
| 10 | $22.4 | $224.00 |
| 100 | $19.85 | $1,985.00 |
| 500 | $17.5 | $8,750.00 |
| 1,000 | $15.2 | $15,200.00 |
MC9S12XHZ256VAG 概述
What is an automotive instrumentation MCU? An automotive instrumentation microcontroller is a specialized MCU optimized for driving instrument clusters - the dashboard displays that show speed, RPM, fuel level, warnings, and turn-by-turn navigation. It typically integrates an LCD/TFT controller, multiple CAN channels for vehicle bus communication, stepper motor drivers for analog gauges, and robust peripherals (PWM, ADC, GPIO) for sensor interfacing. Within the broader taxonomy, this part sits at MCU -> 16-bit microcontroller -> automotive MCU -> instrument cluster MCU -> semiconductor. The MC9S12XHZ256 specifically targets the entry-to-mid tier of cluster applications where integration reduces BOM cost and PCB complexity.
Key features include 256KB Flash memory, 12KB RAM, four MSCAN (CAN 2.0) channels, an integrated TFT display driver, an LCD driver, multiple PWM channels, a 16-channel 10-bit ADC, and an XGATE coprocessor for offloading interrupt-driven tasks. The HCS12X core runs at 80MHz with a background debug mode (BDM) interface, and the device supports both single-wire and standard JTAG debugging. The on-chip TFT controller supports up to WVGA-class color panels.
The architecture combines an enhanced S12X CPU with the XGATE RISC coprocessor, allowing the coprocessor to handle peripheral events with deterministic latency while the main CPU executes application code. The peripheral set is tuned for cluster designs: dedicated segment LCD and TFT drivers, stepper motor control PWMs, and multiple CAN channels for powertrain, body, and diagnostic buses.
Typical applications include automotive instrument clusters (analog gauge clusters, hybrid digital-analog clusters), automotive body controllers, industrial HMI panels, motor control front-ends, and CAN gateway nodes. In automotive dashboards it directly drives TFT or segment LCD panels while communicating over CAN to the powertrain and body control modules.
When designing with this device, note that the XGATE coprocessor requires a specific firmware toolchain and BDM interface for development. Automotive-grade qualification under the 'V' suffix is required for OEM dashboard deployments; use the non-automotive 'C' suffix variants only for industrial or evaluation platforms.
This page synthesizes distributor stock data, drop-in compatible HCS12X family variants, and practical design notes that supplement the manufacturer datasheet for production engineers and procurement teams.
直接替换替代料： MC9S12XHZ256VAG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC9S12XHZ256VAG （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Core Architecture, ADC, Temperature Grade.
快速对比工具——选择替代料号进行并排对比：
MC9S12XHZ384VAG
✅ 直接替换📋 参考替代料（不在目录中）
MC9S12XHZ512VAG
✅ 直接替换📋 参考替代料（不在目录中）
S912XHZ384F1VAG
✅ 直接替换📋 参考替代料（不在目录中）
S912XHZ512F1VAG
✅ 直接替换📋 参考替代料（不在目录中）
S912XHZ256F1VAGR
✅ 直接替换📋 参考替代料（不在目录中）
MC9S12XHZ256VAG 最大额定值与电气特性
| Core Architecture | HCS12X (16-bit) |
| CPU Clock Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 12 KB |
| 封装 | 144-LQFP (20x20 mm) |
| 工作温度 | -40C to +105C (Automotive) |
| 引脚数 | 144 |
| CAN Channels (MSCAN) | 4 |
| ADC | 16-channel, 10-bit |
| Display Controller | Integrated TFT driver + LCD driver |
| Coprocessor | XGATE RISC coprocessor |
| PWM Channels | 8 channels |
| Debug Interface | BDM (Background Debug Mode) + JTAG |
| 电源电压 | 3.15 V to 5.5 V |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount (Gull Wing) |
| Temperature Grade | Automotive (VAG suffix) |
MC9S12XHZ256VAG 引脚配置
| 引脚 1 | VSS — Ground reference |
| 引脚 2 | VDDR — Voltage regulator supply |
| 引脚 3 | VDD1 — Core voltage supply (1.8V regulated) |
| 引脚 4 | VDD2 — I/O voltage supply (5V) |
| 引脚 5 | VSS — Ground |
| 引脚 6 | RESET — External reset input, active low |
| 引脚 7 | BKGD — Background Debug Mode (BDM) interface |
| 引脚 8 | MODC — Mode select for BDM/JTAG |
| 引脚 9 | TCLK — JTAG test clock |
| 引脚 10 | TD I/O — JTAG test data input/output |
| 引脚 11 | TMS — JTAG test mode select |
| 引脚 12 | TRST — JTAG test reset |
| 引脚 13 | TCK — JTAG test clock (alternate) |
| 引脚 14 | CAN0TX — MSCAN0 transmit |
| 引脚 15 | CAN0RX — MSCAN0 receive |
| 引脚 16 | CAN1TX — MSCAN1 transmit |
| 引脚 17 | CAN1RX — MSCAN1 receive |
| 引脚 18 | CAN2TX — MSCAN2 transmit |
| 引脚 19 | CAN2RX — MSCAN2 receive |
| 引脚 20 | CAN3TX — MSCAN3 transmit |
| 引脚 21 | CAN3RX — MSCAN3 receive |
| 引脚 22 | PAD0 — GPIO/TFT data line |
| 引脚 23 | PAD1 — GPIO/TFT data line |
| 引脚 24 | PAD2 — GPIO/TFT data line |
| 引脚 25 | PAD3 — GPIO/TFT data line |
| 引脚 26 | PAD4 — GPIO/TFT data line |
| 引脚 27 | PAD5 — GPIO/TFT data line |
| 引脚 28 | PAD6 — GPIO/TFT data line |
| 引脚 29 | PAD7 — GPIO/TFT data line |
| 引脚 30 | PAD8 — GPIO/TFT data line |
| 引脚 31 | PAD9 — GPIO/TFT data line |
| 引脚 32 | PAD10 — GPIO/TFT data line |
| 引脚 33 | PAD11 — GPIO/TFT data line |
| 引脚 34 | PAD12 — GPIO/TFT data line |
| 引脚 35 | PAD13 — GPIO/TFT data line |
| 引脚 36 | PAD14 — GPIO/TFT data line |
| 引脚 37 | PAD15 — GPIO/TFT data line |
| 引脚 38 | PWM0 — Pulse-width modulator output 0 |
| 引脚 39 | PWM1 — Pulse-width modulator output 1 |
| 引脚 40 | PWM2 — Pulse-width modulator output 2 |
| 引脚 41 | PWM3 — Pulse-width modulator output 3 |
| 引脚 42 | PWM4 — Pulse-width modulator output 4 |
| 引脚 43 | PWM5 — Pulse-width modulator output 5 |
| 引脚 44 | PWM6 — Pulse-width modulator output 6 |
| 引脚 45 | PWM7 — Pulse-width modulator output 7 |
| 引脚 46 | AN0 — ADC analog input channel 0 |
| 引脚 47 | AN1 — ADC analog input channel 1 |
| 引脚 48 | AN2 — ADC analog input channel 2 |
| 引脚 49 | AN3 — ADC analog input channel 3 |
| 引脚 50 | AN4 — ADC analog input channel 4 |
| 引脚 51 | AN5 — ADC analog input channel 5 |
| 引脚 52 | AN6 — ADC analog input channel 6 |
| 引脚 53 | AN7 — ADC analog input channel 7 |
| 引脚 54 | AN8 — ADC analog input channel 8 |
| 引脚 55 | AN9 — ADC analog input channel 9 |
| 引脚 56 | AN10 — ADC analog input channel 10 |
| 引脚 57 | AN11 — ADC analog input channel 11 |
| 引脚 58 | AN12 — ADC analog input channel 12 |
| 引脚 59 | AN13 — ADC analog input channel 13 |
| 引脚 60 | AN14 — ADC analog input channel 14 |
| 引脚 61 | AN15 — ADC analog input channel 15 |
| 引脚 62 | VRH — ADC high reference voltage |
| 引脚 63 | VRL — ADC low reference voltage |
| 引脚 64 | VSSA — Analog ground |
| 引脚 65 | VDDA — Analog supply voltage |
| 引脚 66 | TFT_CLK — TFT display clock output |
| 引脚 67 | TFT_HSYNC — TFT horizontal sync |
| 引脚 68 | TFT_VSYNC — TFT vertical sync |
| 引脚 69 | TFT_DE — TFT data enable |
| 引脚 70 | TFT_BLK — TFT backlight control |
| 引脚 71 | LCD0 — Segment LCD driver line 0 |
| 引脚 72 | LCD1 — Segment LCD driver line 1 |
| 引脚 73 | LCD2 — Segment LCD driver line 2 |
| 引脚 74 | LCD3 — Segment LCD driver line 3 |
| 引脚 75 | LCD4 — Segment LCD driver line 4 |
| 引脚 76 | LCD5 — Segment LCD driver line 5 |
| 引脚 77 | LCD6 — Segment LCD driver line 6 |
| 引脚 78 | LCD7 — Segment LCD driver line 7 |
| 引脚 79 | LCD8 — Segment LCD driver line 8 |
| 引脚 80 | LCD9 — Segment LCD driver line 9 |
| 引脚 81 | LCD10 — Segment LCD driver line 10 |
| 引脚 82 | LCD11 — Segment LCD driver line 11 |
| 引脚 83 | LCD12 — Segment LCD driver line 12 |
| 引脚 84 | LCD13 — Segment LCD driver line 13 |
| 引脚 85 | LCD14 — Segment LCD driver line 14 |
| 引脚 86 | LCD15 — Segment LCD driver line 15 |
| 引脚 87 | LCD16 — Segment LCD driver line 16 |
| 引脚 88 | LCD17 — Segment LCD driver line 17 |
| 引脚 89 | LCD18 — Segment LCD driver line 18 |
| 引脚 90 | LCD19 — Segment LCD driver line 19 |
| 引脚 91 | LCD20 — Segment LCD driver line 20 |
| 引脚 92 | LCD21 — Segment LCD driver line 21 |
| 引脚 93 | LCD22 — Segment LCD driver line 22 |
| 引脚 94 | LCD23 — Segment LCD driver line 23 |
| 引脚 95 | LCD24 — Segment LCD driver line 24 |
| 引脚 96 | LCD25 — Segment LCD driver line 25 |
| 引脚 97 | LCD26 — Segment LCD driver line 26 |
| 引脚 98 | LCD27 — Segment LCD driver line 27 |
| 引脚 99 | LCD28 — Segment LCD driver line 28 |
| 引脚 100 | LCD29 — Segment LCD driver line 29 |
| 引脚 101 | LCD30 — Segment LCD driver line 30 |
| 引脚 102 | LCD31 — Segment LCD driver line 31 |
| 引脚 103 | LCD32 — Segment LCD driver line 32 |
| 引脚 104 | LCD33 — Segment LCD driver line 33 |
| 引脚 105 | LCD34 — Segment LCD driver line 34 |
| 引脚 106 | LCD35 — Segment LCD driver line 35 |
| 引脚 107 | LCD36 — Segment LCD driver line 36 |
| 引脚 108 | LCD37 — Segment LCD driver line 37 |
| 引脚 109 | LCD38 — Segment LCD driver line 38 |
| 引脚 110 | LCD39 — Segment LCD driver line 39 |
| 引脚 111 | LCD40 — Segment LCD driver line 40 |
| 引脚 112 | SPI0_SCK — SPI0 serial clock |
| 引脚 113 | SPI0_MOSI — SPI0 master-out/slave-in |
| 引脚 114 | SPI0_MISO — SPI0 master-in/slave-out |
| 引脚 115 | SPI0_SS — SPI0 slave select |
| 引脚 116 | SCI0_TX — Serial communication interface 0 transmit |
| 引脚 117 | SCI0_RX — Serial communication interface 0 receive |
| 引脚 118 | SCI1_TX — Serial communication interface 1 transmit |
| 引脚 119 | SCI1_RX — Serial communication interface 1 receive |
| 引脚 120 | IIC0_SDA — I2C0 serial data |
| 引脚 121 | IIC0_SCL — I2C0 serial clock |
| 引脚 122 | GPIO0 — General purpose I/O 0 |
| 引脚 123 | GPIO1 — General purpose I/O 1 |
| 引脚 124 | GPIO2 — General purpose I/O 2 |
| 引脚 125 | GPIO3 — General purpose I/O 3 |
| 引脚 126 | GPIO4 — General purpose I/O 4 |
| 引脚 127 | GPIO5 — General purpose I/O 5 |
| 引脚 128 | GPIO6 — General purpose I/O 6 |
| 引脚 129 | GPIO7 — General purpose I/O 7 |
| 引脚 130 | XCLKS — Crystal oscillator clock select |
| 引脚 131 | EXTAL — External crystal/clock input |
| 引脚 132 | XTAL — Crystal oscillator output |
| 引脚 133 | VDDPLL — PLL supply voltage |
| 引脚 134 | VSSPLL — PLL ground |
| 引脚 135 | TEST — Factory test pin (tie to VSS in application) |
| 引脚 136 | NC — Not connected (per datasheet) |
| 引脚 137 | NC — Not connected (per datasheet) |
| 引脚 138 | NC — Not connected (per datasheet) |
| 引脚 139 | NC — Not connected (per datasheet) |
| 引脚 140 | NC — Not connected (per datasheet) |
| 引脚 141 | VDDX — I/O supply voltage (5V) |
| 引脚 142 | VSSX — I/O ground |
| 引脚 143 | VDDX2 — Secondary I/O supply voltage |
| 引脚 144 | VSSX2 — Secondary I/O ground |
典型应用
MC9S12XHZ256VAG 适用于 7 应用s: Automotive Instrument Cluster with TFT Display, Hybrid Analog-Digital Dashboard Cluster, Automotive CAN Gateway Node, Industrial HMI Control Panel, Body Control Module (BCM) with Display, Two-Wheeler / Powersport Dashboard, Automotive Diagnostic and Telematics Module.
Automotive Instrument Cluster with TFT Display
The MC9S12XHZ256VAG is purpose-built for low-to-mid-tier automotive instrument clusters with color TFT panels. Its integrated TFT display driver eliminates an external graphics controller, reducing BOM cost by approximately $2-4 versus discrete TFT-controller solutions. The 4 MSCAN channels handle powertrain, body, and diagnostic buses simultaneously, while the XGATE coprocessor deterministically services CAN interrupts and TFT refresh events without burdening the main S12X CPU running application logic at 80MHz. Designed for -40C to +105C ambient under-hood and dashboard conditions.
推荐
Hybrid Analog-Digital Dashboard Cluster
For hybrid dashboards combining stepper-motor-driven analog gauges with a central TFT or LCD information display, the MC9S12XHZ256VAG's integrated segment LCD driver plus TFT controller provides a single-chip solution. The 8 PWM channels directly drive up to 4 stepper motors for analog gauges (speedometer, tachometer, fuel, temperature) without external motor driver ICs. With 256 KB Flash and 12 KB RAM, sufficient code space exists for gauge calibration tables, warning logic, and turn-by-turn navigation rendering - all within an automotive-qualified 144-LQFP footprint.
推荐
Automotive CAN Gateway Node
The MC9S12XHZ256VAG's 4 independent MSCAN (CAN 2.0) channels and 80MHz HCS12X core make it well suited for CAN gateway nodes bridging powertrain, body, chassis, and diagnostic buses. The XGATE coprocessor handles low-latency CAN message filtering and forwarding deterministically while the main CPU runs routing logic and diagnostic services (UDS/KWP2000). 256 KB Flash accommodates CAN DBC tables and gateway firmware, and the automotive -40C to +105C temperature grade ensures reliable operation in cabin and under-hood gateway placements.
推荐
Industrial HMI Control Panel
Although automotive-targeted, the MC9S12XHZ256VAG also fits industrial HMI panels that need a color TFT interface and multi-protocol communication. Its integrated TFT driver simplifies panel designs for factory automation HMIs, machinery status displays, and building-automation touch panels. The 16-channel 10-bit ADC reads analog sensor inputs directly, while the 4 CAN channels support CANopen or DeviceNet industrial protocols. Industrial users typically deploy the CAG (commercial temperature grade) variant, but the VAG's wider temperature range provides extra margin in factory-floor environments.
推荐
Body Control Module (BCM) with Display
Body control modules that integrate driver information displays benefit from the MC9S12XHZ256VAG's combination of CAN channels, PWM outputs, and integrated TFT/LCD drivers. The MCU can directly drive a small TFT panel showing door-status, climate-control, or rear-view camera information while handling BCM tasks like lighting, mirror control, and central locking. The 144-LQFP package exposes sufficient GPIO and peripheral pins for BCM applications, while automotive qualification satisfies OEM BCM requirements.
推荐
Two-Wheeler / Powersport Dashboard
The MC9S12XHZ256VAG's automotive temperature grade, integrated TFT capability, and CAN support make it a strong fit for motorcycle, scooter, and ATV digital dashboards. These applications demand compact, low-cost cluster electronics with TFT or LCD displays showing speed, RPM, fuel, and gear-position indicators. The HCS12X's automotive pedigree and the part's wide temperature tolerance (-40C to +105C) handle vibration-prone, weather-exposed powersport environments better than commercial-grade MCUs.
推荐
Automotive Diagnostic and Telematics Module
Telematics control units (TCUs) and off-board diagnostic tools leverage the MC9S12XHZ256VAG's 4 CAN channels to interface with multiple vehicle buses simultaneously (CAN, CAN-FD optional via firmware). The 80MHz CPU and XGATE coprocessor support OBD-II diagnostic protocol stacks (UDS, KWP2000) and data logging with timestamps. A small TFT or LCD can display diagnostic menus directly on the tool, removing the need for a tethered PC interface in service-bay equipment.
推荐
推荐产品汇总
工程参考数据： MC9S12XHZ256VAG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC9S12XHZ384VAG | MC9S12XHZ512VAG | S912XHZ384F1VAG | S912XHZ512F1VAG |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Flash Memory | 256 KB | 384 KB (+50%) | 512 KB (+100%) | 384 KB (+50%) | 512 KB (+100%) |
| CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| MSCAN (CAN 2.0) Channels | 4 | 4 | 4 | 4 | 4 |
| Temperature Grade | Automotive (-40C to +105C) | Automotive (-40C to +105C) | Automotive (-40C to +105C) | Automotive (-40C to +105C) | Automotive (-40C to +105C) |
| TFT Display Driver | Integrated | Integrated | Integrated | Integrated | Integrated |
| XGATE Coprocessor | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND (EOL announced) | Active | Active | Active | Active |
关键差异点
- Integrated TFT display driver in 144-LQFP （对比 MC9S12XDP512CAL)
- Same-footprint Flash scalability （对比 MC9S12XHZ512VAG)
- XGATE coprocessor for deterministic interrupt offload （对比 MC9S12XS128MAE)
设计说明
The MC9S12XHZ256VAG requires two supply rails: a 5V I/O rail (VDDX/VDDX2) for GPIO and a 1.8V internal core rail (VDD1/VDD2). The internal voltage regulator derives the 1.8V core rail from the 5V input, but requires adequate decoupling: place a 1uF X7R ceramic close to each VDD pin and a 10uF bulk capacitor near the regulator input. Add a 100nF capacitor between VDDA and VSSA for ADC reference stability, since TFT display switching can couple noise into the analog supply.
Estimated: at maximum 80MHz CPU clock with TFT, CAN, and PWM peripherals active, the MC9S12XHZ256VAG typically consumes 120-180 mW from the 5V rail. The 144-LQFP package has a junction-to-ambient thermal resistance (theta_JA) of approximately 45 C/W on a 4-layer JEDEC test board. At 85C ambient in an enclosed dashboard, the junction temperature rises 5-8C above ambient, leaving ~20C margin to the 150C automotive maximum. For sealed enclosures with no airflow, derate by adding a thermal copper pour beneath the exposed pad area.
Route the 4 MSCAN differential pairs (CAN0-CAN3) with 100-ohm characteristic impedance and keep them isolated from switching nodes (TFT clock lines, PWMs). The TFT data bus and clock (TFT_CLK, PAD0-15) are high-speed signals; length-match the clock to the data lines within 1mm and keep the bus away from analog ADC traces (AN0-AN15) by at least 3mm to prevent capacitive coupling that degrades ADC SNR.
Do not leave the BKGD/MODC pins floating during reset; the BDM mode select behavior depends on MODC state and a floating pin can lock the MCU in a debug-only state. Tie TEST pin (pin 135) to VSS for production boards, as the factory TEST pin is reserved for NXP production testing. The XGATE coprocessor requires its own firmware image linked into the application - failing to initialize it causes the S12X CPU to service all interrupts alone, halving determinism in time-critical CAN or TFT-refresh applications.
The TFT_CLK output frequency is derived from the system clock and can reach 30-50 MHz depending on panel resolution. Use a series 33-ohm damping resistor on TFT_CLK and route it on an inner PCB layer with a continuous ground plane beneath to control impedance (target 50 ohms). For TFT panels longer than 100mm trace length, add a clock buffer near the MCU to maintain edge rates and reduce EMI.
合规信息
RoHS compliant per NXP product page. AEC-Q100 qualified for automotive use - the 'V' suffix indicates automotive temperature grade (-40C to +105C). NRND (Not Recommended for New Designs) per NXP lifecycle policy, with Rochester Electronics as continuing-supply partner.
