MC9S12XHZ256VAG - 16-bit MCU 256KB Flash 80MHz 144-LQFP | NXP
MPN: MC9S12XHZ256VAG ✗ סוף ייצורMC9S12XHZ256VAG סקירה
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.
חלופות תחליף ישיר עבור MC9S12XHZ256VAG — 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 MC9S12XHZ256VAG (אותו גורם צורה וטביעת רגל) — שונים ב Package, Operating Temperature, Core Architecture, ADC, Temperature Grade.
MC9S12XHZ384VAG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC9S12XHZ512VAG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
S912XHZ384F1VAG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
S912XHZ512F1VAG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
S912XHZ256F1VAGR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC9S12XHZ256VAG דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | HCS12X (16-bit) |
| CPU Clock Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 12 KB |
| מארז | 144-LQFP (20x20 mm) |
| טמפרטורת פעולה | -40C to +105C (Automotive) |
| מספר פינים | 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 |
| מתח אספקה | 3.15 V to 5.5 V |
| סטטוס RoHS | Compliant |
| סוג הרכבה | Surface Mount (Gull Wing) |
| Temperature Grade | Automotive (VAG suffix) |
תצורת פינים של MC9S12XHZ256VAG
| פין 1 | VSS — Ground reference |
| פין 2 | VDDR — Voltage regulator supply |
| פין 3 | VDD1 — Core voltage supply (1.8V regulated) |
| פין 4 | VDD2 — I/O voltage supply (5V) |
| פין 5 | VSS — Ground |
| פין 6 | RESET — External reset input, active low |
| פין 7 | BKGD — Background Debug Mode (BDM) interface |
| פין 8 | MODC — Mode select for BDM/JTAG |
| פין 9 | TCLK — JTAG test clock |
| פין 10 | TD I/O — JTAG test data input/output |
| פין 11 | TMS — JTAG test mode select |
| פין 12 | TRST — JTAG test reset |
| פין 13 | TCK — JTAG test clock (alternate) |
| פין 14 | CAN0TX — MSCAN0 transmit |
| פין 15 | CAN0RX — MSCAN0 receive |
| פין 16 | CAN1TX — MSCAN1 transmit |
| פין 17 | CAN1RX — MSCAN1 receive |
| פין 18 | CAN2TX — MSCAN2 transmit |
| פין 19 | CAN2RX — MSCAN2 receive |
| פין 20 | CAN3TX — MSCAN3 transmit |
| פין 21 | CAN3RX — MSCAN3 receive |
| פין 22 | PAD0 — GPIO/TFT data line |
| פין 23 | PAD1 — GPIO/TFT data line |
| פין 24 | PAD2 — GPIO/TFT data line |
| פין 25 | PAD3 — GPIO/TFT data line |
| פין 26 | PAD4 — GPIO/TFT data line |
| פין 27 | PAD5 — GPIO/TFT data line |
| פין 28 | PAD6 — GPIO/TFT data line |
| פין 29 | PAD7 — GPIO/TFT data line |
| פין 30 | PAD8 — GPIO/TFT data line |
| פין 31 | PAD9 — GPIO/TFT data line |
| פין 32 | PAD10 — GPIO/TFT data line |
| פין 33 | PAD11 — GPIO/TFT data line |
| פין 34 | PAD12 — GPIO/TFT data line |
| פין 35 | PAD13 — GPIO/TFT data line |
| פין 36 | PAD14 — GPIO/TFT data line |
| פין 37 | PAD15 — GPIO/TFT data line |
| פין 38 | PWM0 — Pulse-width modulator output 0 |
| פין 39 | PWM1 — Pulse-width modulator output 1 |
| פין 40 | PWM2 — Pulse-width modulator output 2 |
| פין 41 | PWM3 — Pulse-width modulator output 3 |
| פין 42 | PWM4 — Pulse-width modulator output 4 |
| פין 43 | PWM5 — Pulse-width modulator output 5 |
| פין 44 | PWM6 — Pulse-width modulator output 6 |
| פין 45 | PWM7 — Pulse-width modulator output 7 |
| פין 46 | AN0 — ADC analog input channel 0 |
| פין 47 | AN1 — ADC analog input channel 1 |
| פין 48 | AN2 — ADC analog input channel 2 |
| פין 49 | AN3 — ADC analog input channel 3 |
| פין 50 | AN4 — ADC analog input channel 4 |
| פין 51 | AN5 — ADC analog input channel 5 |
| פין 52 | AN6 — ADC analog input channel 6 |
| פין 53 | AN7 — ADC analog input channel 7 |
| פין 54 | AN8 — ADC analog input channel 8 |
| פין 55 | AN9 — ADC analog input channel 9 |
| פין 56 | AN10 — ADC analog input channel 10 |
| פין 57 | AN11 — ADC analog input channel 11 |
| פין 58 | AN12 — ADC analog input channel 12 |
| פין 59 | AN13 — ADC analog input channel 13 |
| פין 60 | AN14 — ADC analog input channel 14 |
| פין 61 | AN15 — ADC analog input channel 15 |
| פין 62 | VRH — ADC high reference voltage |
| פין 63 | VRL — ADC low reference voltage |
| פין 64 | VSSA — Analog ground |
| פין 65 | VDDA — Analog supply voltage |
| פין 66 | TFT_CLK — TFT display clock output |
| פין 67 | TFT_HSYNC — TFT horizontal sync |
| פין 68 | TFT_VSYNC — TFT vertical sync |
| פין 69 | TFT_DE — TFT data enable |
| פין 70 | TFT_BLK — TFT backlight control |
| פין 71 | LCD0 — Segment LCD driver line 0 |
| פין 72 | LCD1 — Segment LCD driver line 1 |
| פין 73 | LCD2 — Segment LCD driver line 2 |
| פין 74 | LCD3 — Segment LCD driver line 3 |
| פין 75 | LCD4 — Segment LCD driver line 4 |
| פין 76 | LCD5 — Segment LCD driver line 5 |
| פין 77 | LCD6 — Segment LCD driver line 6 |
| פין 78 | LCD7 — Segment LCD driver line 7 |
| פין 79 | LCD8 — Segment LCD driver line 8 |
| פין 80 | LCD9 — Segment LCD driver line 9 |
| פין 81 | LCD10 — Segment LCD driver line 10 |
| פין 82 | LCD11 — Segment LCD driver line 11 |
| פין 83 | LCD12 — Segment LCD driver line 12 |
| פין 84 | LCD13 — Segment LCD driver line 13 |
| פין 85 | LCD14 — Segment LCD driver line 14 |
| פין 86 | LCD15 — Segment LCD driver line 15 |
| פין 87 | LCD16 — Segment LCD driver line 16 |
| פין 88 | LCD17 — Segment LCD driver line 17 |
| פין 89 | LCD18 — Segment LCD driver line 18 |
| פין 90 | LCD19 — Segment LCD driver line 19 |
| פין 91 | LCD20 — Segment LCD driver line 20 |
| פין 92 | LCD21 — Segment LCD driver line 21 |
| פין 93 | LCD22 — Segment LCD driver line 22 |
| פין 94 | LCD23 — Segment LCD driver line 23 |
| פין 95 | LCD24 — Segment LCD driver line 24 |
| פין 96 | LCD25 — Segment LCD driver line 25 |
| פין 97 | LCD26 — Segment LCD driver line 26 |
| פין 98 | LCD27 — Segment LCD driver line 27 |
| פין 99 | LCD28 — Segment LCD driver line 28 |
| פין 100 | LCD29 — Segment LCD driver line 29 |
| פין 101 | LCD30 — Segment LCD driver line 30 |
| פין 102 | LCD31 — Segment LCD driver line 31 |
| פין 103 | LCD32 — Segment LCD driver line 32 |
| פין 104 | LCD33 — Segment LCD driver line 33 |
| פין 105 | LCD34 — Segment LCD driver line 34 |
| פין 106 | LCD35 — Segment LCD driver line 35 |
| פין 107 | LCD36 — Segment LCD driver line 36 |
| פין 108 | LCD37 — Segment LCD driver line 37 |
| פין 109 | LCD38 — Segment LCD driver line 38 |
| פין 110 | LCD39 — Segment LCD driver line 39 |
| פין 111 | LCD40 — Segment LCD driver line 40 |
| פין 112 | SPI0_SCK — SPI0 serial clock |
| פין 113 | SPI0_MOSI — SPI0 master-out/slave-in |
| פין 114 | SPI0_MISO — SPI0 master-in/slave-out |
| פין 115 | SPI0_SS — SPI0 slave select |
| פין 116 | SCI0_TX — Serial communication interface 0 transmit |
| פין 117 | SCI0_RX — Serial communication interface 0 receive |
| פין 118 | SCI1_TX — Serial communication interface 1 transmit |
| פין 119 | SCI1_RX — Serial communication interface 1 receive |
| פין 120 | IIC0_SDA — I2C0 serial data |
| פין 121 | IIC0_SCL — I2C0 serial clock |
| פין 122 | GPIO0 — General purpose I/O 0 |
| פין 123 | GPIO1 — General purpose I/O 1 |
| פין 124 | GPIO2 — General purpose I/O 2 |
| פין 125 | GPIO3 — General purpose I/O 3 |
| פין 126 | GPIO4 — General purpose I/O 4 |
| פין 127 | GPIO5 — General purpose I/O 5 |
| פין 128 | GPIO6 — General purpose I/O 6 |
| פין 129 | GPIO7 — General purpose I/O 7 |
| פין 130 | XCLKS — Crystal oscillator clock select |
| פין 131 | EXTAL — External crystal/clock input |
| פין 132 | XTAL — Crystal oscillator output |
| פין 133 | VDDPLL — PLL supply voltage |
| פין 134 | VSSPLL — PLL ground |
| פין 135 | TEST — Factory test pin (tie to VSS in application) |
| פין 136 | NC — Not connected (per datasheet) |
| פין 137 | NC — Not connected (per datasheet) |
| פין 138 | NC — Not connected (per datasheet) |
| פין 139 | NC — Not connected (per datasheet) |
| פין 140 | NC — Not connected (per datasheet) |
| פין 141 | VDDX — I/O supply voltage (5V) |
| פין 142 | VSSX — I/O ground |
| פין 143 | VDDX2 — Secondary I/O supply voltage |
| פין 144 | VSSX2 — Secondary I/O ground |
יישומים טיפוסיים
MC9S12XHZ256VAG מתאים עבור 7 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MC9S12XHZ256VAG — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Integrated TFT display driver in 144-LQFP (לעומתMC9S12XDP512CAL)
- Same-footprint Flash scalability (לעומתMC9S12XHZ512VAG)
- XGATE coprocessor for deterministic interrupt offload (לעומתMC9S12XS128MAE)
הערות תכנון
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.
מידע על תאימות
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.
