MC9S12XHZ256VAG - 16-bit MCU 256KB Flash 80MHz 144-LQFP | NXP
Référence : MC9S12XHZ256VAG ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour MC9S12XHZ256VAG — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC9S12XHZ256VAG (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Core Architecture, ADC, Temperature Grade.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC9S12XHZ384VAG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC9S12XHZ512VAG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S912XHZ384F1VAG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S912XHZ512F1VAG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S912XHZ256F1VAGR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC9S12XHZ256VAG Valeurs maximales et caractéristiques électriques
| Core Architecture | HCS12X (16-bit) |
| CPU Clock Frequency | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM | 12 KB |
| Boîtier | 144-LQFP (20x20 mm) |
| Température de fonctionnement | -40C to +105C (Automotive) |
| Nombre de broches | 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 |
| Tension d'alimentation | 3.15 V to 5.5 V |
| Statut RoHS | Compliant |
| Type de montage | Surface Mount (Gull Wing) |
| Temperature Grade | Automotive (VAG suffix) |
Configuration des broches de MC9S12XHZ256VAG
| Broche 1 | VSS — Ground reference |
| Broche 2 | VDDR — Voltage regulator supply |
| Broche 3 | VDD1 — Core voltage supply (1.8V regulated) |
| Broche 4 | VDD2 — I/O voltage supply (5V) |
| Broche 5 | VSS — Ground |
| Broche 6 | RESET — External reset input, active low |
| Broche 7 | BKGD — Background Debug Mode (BDM) interface |
| Broche 8 | MODC — Mode select for BDM/JTAG |
| Broche 9 | TCLK — JTAG test clock |
| Broche 10 | TD I/O — JTAG test data input/output |
| Broche 11 | TMS — JTAG test mode select |
| Broche 12 | TRST — JTAG test reset |
| Broche 13 | TCK — JTAG test clock (alternate) |
| Broche 14 | CAN0TX — MSCAN0 transmit |
| Broche 15 | CAN0RX — MSCAN0 receive |
| Broche 16 | CAN1TX — MSCAN1 transmit |
| Broche 17 | CAN1RX — MSCAN1 receive |
| Broche 18 | CAN2TX — MSCAN2 transmit |
| Broche 19 | CAN2RX — MSCAN2 receive |
| Broche 20 | CAN3TX — MSCAN3 transmit |
| Broche 21 | CAN3RX — MSCAN3 receive |
| Broche 22 | PAD0 — GPIO/TFT data line |
| Broche 23 | PAD1 — GPIO/TFT data line |
| Broche 24 | PAD2 — GPIO/TFT data line |
| Broche 25 | PAD3 — GPIO/TFT data line |
| Broche 26 | PAD4 — GPIO/TFT data line |
| Broche 27 | PAD5 — GPIO/TFT data line |
| Broche 28 | PAD6 — GPIO/TFT data line |
| Broche 29 | PAD7 — GPIO/TFT data line |
| Broche 30 | PAD8 — GPIO/TFT data line |
| Broche 31 | PAD9 — GPIO/TFT data line |
| Broche 32 | PAD10 — GPIO/TFT data line |
| Broche 33 | PAD11 — GPIO/TFT data line |
| Broche 34 | PAD12 — GPIO/TFT data line |
| Broche 35 | PAD13 — GPIO/TFT data line |
| Broche 36 | PAD14 — GPIO/TFT data line |
| Broche 37 | PAD15 — GPIO/TFT data line |
| Broche 38 | PWM0 — Pulse-width modulator output 0 |
| Broche 39 | PWM1 — Pulse-width modulator output 1 |
| Broche 40 | PWM2 — Pulse-width modulator output 2 |
| Broche 41 | PWM3 — Pulse-width modulator output 3 |
| Broche 42 | PWM4 — Pulse-width modulator output 4 |
| Broche 43 | PWM5 — Pulse-width modulator output 5 |
| Broche 44 | PWM6 — Pulse-width modulator output 6 |
| Broche 45 | PWM7 — Pulse-width modulator output 7 |
| Broche 46 | AN0 — ADC analog input channel 0 |
| Broche 47 | AN1 — ADC analog input channel 1 |
| Broche 48 | AN2 — ADC analog input channel 2 |
| Broche 49 | AN3 — ADC analog input channel 3 |
| Broche 50 | AN4 — ADC analog input channel 4 |
| Broche 51 | AN5 — ADC analog input channel 5 |
| Broche 52 | AN6 — ADC analog input channel 6 |
| Broche 53 | AN7 — ADC analog input channel 7 |
| Broche 54 | AN8 — ADC analog input channel 8 |
| Broche 55 | AN9 — ADC analog input channel 9 |
| Broche 56 | AN10 — ADC analog input channel 10 |
| Broche 57 | AN11 — ADC analog input channel 11 |
| Broche 58 | AN12 — ADC analog input channel 12 |
| Broche 59 | AN13 — ADC analog input channel 13 |
| Broche 60 | AN14 — ADC analog input channel 14 |
| Broche 61 | AN15 — ADC analog input channel 15 |
| Broche 62 | VRH — ADC high reference voltage |
| Broche 63 | VRL — ADC low reference voltage |
| Broche 64 | VSSA — Analog ground |
| Broche 65 | VDDA — Analog supply voltage |
| Broche 66 | TFT_CLK — TFT display clock output |
| Broche 67 | TFT_HSYNC — TFT horizontal sync |
| Broche 68 | TFT_VSYNC — TFT vertical sync |
| Broche 69 | TFT_DE — TFT data enable |
| Broche 70 | TFT_BLK — TFT backlight control |
| Broche 71 | LCD0 — Segment LCD driver line 0 |
| Broche 72 | LCD1 — Segment LCD driver line 1 |
| Broche 73 | LCD2 — Segment LCD driver line 2 |
| Broche 74 | LCD3 — Segment LCD driver line 3 |
| Broche 75 | LCD4 — Segment LCD driver line 4 |
| Broche 76 | LCD5 — Segment LCD driver line 5 |
| Broche 77 | LCD6 — Segment LCD driver line 6 |
| Broche 78 | LCD7 — Segment LCD driver line 7 |
| Broche 79 | LCD8 — Segment LCD driver line 8 |
| Broche 80 | LCD9 — Segment LCD driver line 9 |
| Broche 81 | LCD10 — Segment LCD driver line 10 |
| Broche 82 | LCD11 — Segment LCD driver line 11 |
| Broche 83 | LCD12 — Segment LCD driver line 12 |
| Broche 84 | LCD13 — Segment LCD driver line 13 |
| Broche 85 | LCD14 — Segment LCD driver line 14 |
| Broche 86 | LCD15 — Segment LCD driver line 15 |
| Broche 87 | LCD16 — Segment LCD driver line 16 |
| Broche 88 | LCD17 — Segment LCD driver line 17 |
| Broche 89 | LCD18 — Segment LCD driver line 18 |
| Broche 90 | LCD19 — Segment LCD driver line 19 |
| Broche 91 | LCD20 — Segment LCD driver line 20 |
| Broche 92 | LCD21 — Segment LCD driver line 21 |
| Broche 93 | LCD22 — Segment LCD driver line 22 |
| Broche 94 | LCD23 — Segment LCD driver line 23 |
| Broche 95 | LCD24 — Segment LCD driver line 24 |
| Broche 96 | LCD25 — Segment LCD driver line 25 |
| Broche 97 | LCD26 — Segment LCD driver line 26 |
| Broche 98 | LCD27 — Segment LCD driver line 27 |
| Broche 99 | LCD28 — Segment LCD driver line 28 |
| Broche 100 | LCD29 — Segment LCD driver line 29 |
| Broche 101 | LCD30 — Segment LCD driver line 30 |
| Broche 102 | LCD31 — Segment LCD driver line 31 |
| Broche 103 | LCD32 — Segment LCD driver line 32 |
| Broche 104 | LCD33 — Segment LCD driver line 33 |
| Broche 105 | LCD34 — Segment LCD driver line 34 |
| Broche 106 | LCD35 — Segment LCD driver line 35 |
| Broche 107 | LCD36 — Segment LCD driver line 36 |
| Broche 108 | LCD37 — Segment LCD driver line 37 |
| Broche 109 | LCD38 — Segment LCD driver line 38 |
| Broche 110 | LCD39 — Segment LCD driver line 39 |
| Broche 111 | LCD40 — Segment LCD driver line 40 |
| Broche 112 | SPI0_SCK — SPI0 serial clock |
| Broche 113 | SPI0_MOSI — SPI0 master-out/slave-in |
| Broche 114 | SPI0_MISO — SPI0 master-in/slave-out |
| Broche 115 | SPI0_SS — SPI0 slave select |
| Broche 116 | SCI0_TX — Serial communication interface 0 transmit |
| Broche 117 | SCI0_RX — Serial communication interface 0 receive |
| Broche 118 | SCI1_TX — Serial communication interface 1 transmit |
| Broche 119 | SCI1_RX — Serial communication interface 1 receive |
| Broche 120 | IIC0_SDA — I2C0 serial data |
| Broche 121 | IIC0_SCL — I2C0 serial clock |
| Broche 122 | GPIO0 — General purpose I/O 0 |
| Broche 123 | GPIO1 — General purpose I/O 1 |
| Broche 124 | GPIO2 — General purpose I/O 2 |
| Broche 125 | GPIO3 — General purpose I/O 3 |
| Broche 126 | GPIO4 — General purpose I/O 4 |
| Broche 127 | GPIO5 — General purpose I/O 5 |
| Broche 128 | GPIO6 — General purpose I/O 6 |
| Broche 129 | GPIO7 — General purpose I/O 7 |
| Broche 130 | XCLKS — Crystal oscillator clock select |
| Broche 131 | EXTAL — External crystal/clock input |
| Broche 132 | XTAL — Crystal oscillator output |
| Broche 133 | VDDPLL — PLL supply voltage |
| Broche 134 | VSSPLL — PLL ground |
| Broche 135 | TEST — Factory test pin (tie to VSS in application) |
| Broche 136 | NC — Not connected (per datasheet) |
| Broche 137 | NC — Not connected (per datasheet) |
| Broche 138 | NC — Not connected (per datasheet) |
| Broche 139 | NC — Not connected (per datasheet) |
| Broche 140 | NC — Not connected (per datasheet) |
| Broche 141 | VDDX — I/O supply voltage (5V) |
| Broche 142 | VSSX — I/O ground |
| Broche 143 | VDDX2 — Secondary I/O supply voltage |
| Broche 144 | VSSX2 — Secondary I/O ground |
Applications typiques
MC9S12XHZ256VAG convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC9S12XHZ256VAG — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Integrated TFT display driver in 144-LQFP (vs MC9S12XDP512CAL)
- Same-footprint Flash scalability (vs MC9S12XHZ512VAG)
- XGATE coprocessor for deterministic interrupt offload (vs MC9S12XS128MAE)
Notes de conception
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.
Informations de conformité
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.
