NXP Semiconductors

MC9S12XHZ256VAG - 16-bit MCU 256KB Flash 80MHz 144-LQFP | NXP

Артикул: MC9S12XHZ256VAG ✗ Снят с производства
В наличии Отправка в течение 1–3 рабочих дней
3.15 V to 5.5 V Vdss 144-LQFP (20x20 mm) Package 80 MHz Speed 256 KB (256K x 8) Memory
От $15.2 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-10-19
Оптовые цены
Кол-во Цена за ед. Итого
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
ℹ️ Все цены указаны в USD

MC9S12XHZ256VAG Обзор

The NXP (formerly Freescale) MC9S12XHZ256VAG is a 16-bit HCS12X family microcontroller with 256KB of Flash, 80MHz CPU clock, and an integrated TFT display driver, housed in a 144-pin LQFP (20x20 mm) package. It is the industry's first instrumentation cluster MCU with on-chip TFT display driver, revamping graphic display capabilities in the low-end automotive dashboard realm. The 'VAG' suffix indicates the automotive temperature grade (-40C to +105C) and a specific LQFP package option.

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.

Аналоги без доработки для MC9S12XHZ256VAG — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с MC9S12XHZ256VAG (тот же форм-фактор и посадочное место) — отличается по Package, Operating Temperature, Core Architecture, ADC, Temperature Grade.

NXP Semiconductors
Package: 112-LQFP (20x20 mm)
Operating Temperature: -40C to +105C
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: 112-LQFP
Temperature Grade: Industrial
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: LQFP-112 (20x20 mm)
Operating Temperature: -40C to +85C (industrial)
ADC: 16-channel 10-bit ADC
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Operating Temperature: -40C to +125C (Automotive)
Core Architecture: S12X with XGATE coprocessor
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: 144-LQFP (20x20 mm, 0.5 mm pitch)
Operating Temperature: -40C to +125C (Automotive Grade)
Core Architecture: HCS12X (16-bit, XGATE co-processor)
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Operating Temperature: -40C to +105C
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Operating Temperature: -40 °C to +105 °C
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: 144-pin LQFP (20 x 20 mm)
Operating Temperature: -40 °C to +105 °C (automotive)
ADC: 10-bit, 8/16-channel ATD
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: QFP-80 (80-pin Quad Flat Package, gull wing)
Temperature Grade: INDUSTRIAL / AUTOMOTIVE
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: 64-pin LQFP (10x10 mm, GULL WING)
Core Architecture: HCS12 (16-bit)
ADC: 16-channel 10-bit ATD
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Core Architecture: S12 (16-bit CISC)
Сравнить с MC9S12XHZ256VAG →
NXP Semiconductors
Package: 112-pin LQFP
Core Architecture: 16-bit
Temperature Grade: Industrial, -40 °C to +85 °C
Сравнить с MC9S12XHZ256VAG →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

MC9S12XHZ384VAG

✅ Прямая замена
📦 144-LQFP (20x20)
384 KB Flash vs 256 KB (+50%), same 144-LQFP pinout, same peripheral set

📋 Справочный аналог (нет в каталоге)

MC9S12XHZ512VAG

✅ Прямая замена
📦 144-LQFP (20x20)
512 KB Flash vs 256 KB (+100%), same 144-LQFP pinout, identical peripherals

📋 Справочный аналог (нет в каталоге)

S912XHZ384F1VAG

✅ Прямая замена
📦 144-LQFP (20x20)
standard-prefix variant with 384 KB Flash, same 144-LQFP, same automotive grade

📋 Справочный аналог (нет в каталоге)

S912XHZ512F1VAG

✅ Прямая замена
📦 144-LQFP (20x20)
standard-prefix variant with 512 KB Flash, same 144-LQFP, same automotive grade

📋 Справочный аналог (нет в каталоге)

S912XHZ256F1VAGR

✅ Прямая замена
📦 144-LQFP (20x20)
standard-prefix equivalent with 256 KB Flash, same 144-LQFP footprint

📋 Справочный аналог (нет в каталоге)

MC9S12XHZ256VAG Максимальные параметры и электрические характеристики

Core Architecture HCS12X (16-bit)
CPU Clock Frequency 80 MHz
Program Memory (Flash) 256 KB (256K x 8)
RAM 12 KB
Корпус 144-LQFP (20x20 mm)
Рабочая температура -40C to +105C (Automotive)
Количество выводов 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
Напряжение питания 3.15 V to 5.5 V
Статус RoHS Compliant
Тип монтажа Surface Mount (Gull Wing)
Temperature Grade Automotive (VAG suffix)

Конфигурация выводов MC9S12XHZ256VAG

LQFP-144 Package Pinout Diagram LQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 LQFP-144
Контакт 1 VSS — Ground reference
Контакт 2 VDDR — Voltage regulator supply
Контакт 3 VDD1 — Core voltage supply (1.8V regulated)
Контакт 4 VDD2 — I/O voltage supply (5V)
Контакт 5 VSS — Ground
Контакт 6 RESET — External reset input, active low
Контакт 7 BKGD — Background Debug Mode (BDM) interface
Контакт 8 MODC — Mode select for BDM/JTAG
Контакт 9 TCLK — JTAG test clock
Контакт 10 TD I/O — JTAG test data input/output
Контакт 11 TMS — JTAG test mode select
Контакт 12 TRST — JTAG test reset
Контакт 13 TCK — JTAG test clock (alternate)
Контакт 14 CAN0TX — MSCAN0 transmit
Контакт 15 CAN0RX — MSCAN0 receive
Контакт 16 CAN1TX — MSCAN1 transmit
Контакт 17 CAN1RX — MSCAN1 receive
Контакт 18 CAN2TX — MSCAN2 transmit
Контакт 19 CAN2RX — MSCAN2 receive
Контакт 20 CAN3TX — MSCAN3 transmit
Контакт 21 CAN3RX — MSCAN3 receive
Контакт 22 PAD0 — GPIO/TFT data line
Контакт 23 PAD1 — GPIO/TFT data line
Контакт 24 PAD2 — GPIO/TFT data line
Контакт 25 PAD3 — GPIO/TFT data line
Контакт 26 PAD4 — GPIO/TFT data line
Контакт 27 PAD5 — GPIO/TFT data line
Контакт 28 PAD6 — GPIO/TFT data line
Контакт 29 PAD7 — GPIO/TFT data line
Контакт 30 PAD8 — GPIO/TFT data line
Контакт 31 PAD9 — GPIO/TFT data line
Контакт 32 PAD10 — GPIO/TFT data line
Контакт 33 PAD11 — GPIO/TFT data line
Контакт 34 PAD12 — GPIO/TFT data line
Контакт 35 PAD13 — GPIO/TFT data line
Контакт 36 PAD14 — GPIO/TFT data line
Контакт 37 PAD15 — GPIO/TFT data line
Контакт 38 PWM0 — Pulse-width modulator output 0
Контакт 39 PWM1 — Pulse-width modulator output 1
Контакт 40 PWM2 — Pulse-width modulator output 2
Контакт 41 PWM3 — Pulse-width modulator output 3
Контакт 42 PWM4 — Pulse-width modulator output 4
Контакт 43 PWM5 — Pulse-width modulator output 5
Контакт 44 PWM6 — Pulse-width modulator output 6
Контакт 45 PWM7 — Pulse-width modulator output 7
Контакт 46 AN0 — ADC analog input channel 0
Контакт 47 AN1 — ADC analog input channel 1
Контакт 48 AN2 — ADC analog input channel 2
Контакт 49 AN3 — ADC analog input channel 3
Контакт 50 AN4 — ADC analog input channel 4
Контакт 51 AN5 — ADC analog input channel 5
Контакт 52 AN6 — ADC analog input channel 6
Контакт 53 AN7 — ADC analog input channel 7
Контакт 54 AN8 — ADC analog input channel 8
Контакт 55 AN9 — ADC analog input channel 9
Контакт 56 AN10 — ADC analog input channel 10
Контакт 57 AN11 — ADC analog input channel 11
Контакт 58 AN12 — ADC analog input channel 12
Контакт 59 AN13 — ADC analog input channel 13
Контакт 60 AN14 — ADC analog input channel 14
Контакт 61 AN15 — ADC analog input channel 15
Контакт 62 VRH — ADC high reference voltage
Контакт 63 VRL — ADC low reference voltage
Контакт 64 VSSA — Analog ground
Контакт 65 VDDA — Analog supply voltage
Контакт 66 TFT_CLK — TFT display clock output
Контакт 67 TFT_HSYNC — TFT horizontal sync
Контакт 68 TFT_VSYNC — TFT vertical sync
Контакт 69 TFT_DE — TFT data enable
Контакт 70 TFT_BLK — TFT backlight control
Контакт 71 LCD0 — Segment LCD driver line 0
Контакт 72 LCD1 — Segment LCD driver line 1
Контакт 73 LCD2 — Segment LCD driver line 2
Контакт 74 LCD3 — Segment LCD driver line 3
Контакт 75 LCD4 — Segment LCD driver line 4
Контакт 76 LCD5 — Segment LCD driver line 5
Контакт 77 LCD6 — Segment LCD driver line 6
Контакт 78 LCD7 — Segment LCD driver line 7
Контакт 79 LCD8 — Segment LCD driver line 8
Контакт 80 LCD9 — Segment LCD driver line 9
Контакт 81 LCD10 — Segment LCD driver line 10
Контакт 82 LCD11 — Segment LCD driver line 11
Контакт 83 LCD12 — Segment LCD driver line 12
Контакт 84 LCD13 — Segment LCD driver line 13
Контакт 85 LCD14 — Segment LCD driver line 14
Контакт 86 LCD15 — Segment LCD driver line 15
Контакт 87 LCD16 — Segment LCD driver line 16
Контакт 88 LCD17 — Segment LCD driver line 17
Контакт 89 LCD18 — Segment LCD driver line 18
Контакт 90 LCD19 — Segment LCD driver line 19
Контакт 91 LCD20 — Segment LCD driver line 20
Контакт 92 LCD21 — Segment LCD driver line 21
Контакт 93 LCD22 — Segment LCD driver line 22
Контакт 94 LCD23 — Segment LCD driver line 23
Контакт 95 LCD24 — Segment LCD driver line 24
Контакт 96 LCD25 — Segment LCD driver line 25
Контакт 97 LCD26 — Segment LCD driver line 26
Контакт 98 LCD27 — Segment LCD driver line 27
Контакт 99 LCD28 — Segment LCD driver line 28
Контакт 100 LCD29 — Segment LCD driver line 29
Контакт 101 LCD30 — Segment LCD driver line 30
Контакт 102 LCD31 — Segment LCD driver line 31
Контакт 103 LCD32 — Segment LCD driver line 32
Контакт 104 LCD33 — Segment LCD driver line 33
Контакт 105 LCD34 — Segment LCD driver line 34
Контакт 106 LCD35 — Segment LCD driver line 35
Контакт 107 LCD36 — Segment LCD driver line 36
Контакт 108 LCD37 — Segment LCD driver line 37
Контакт 109 LCD38 — Segment LCD driver line 38
Контакт 110 LCD39 — Segment LCD driver line 39
Контакт 111 LCD40 — Segment LCD driver line 40
Контакт 112 SPI0_SCK — SPI0 serial clock
Контакт 113 SPI0_MOSI — SPI0 master-out/slave-in
Контакт 114 SPI0_MISO — SPI0 master-in/slave-out
Контакт 115 SPI0_SS — SPI0 slave select
Контакт 116 SCI0_TX — Serial communication interface 0 transmit
Контакт 117 SCI0_RX — Serial communication interface 0 receive
Контакт 118 SCI1_TX — Serial communication interface 1 transmit
Контакт 119 SCI1_RX — Serial communication interface 1 receive
Контакт 120 IIC0_SDA — I2C0 serial data
Контакт 121 IIC0_SCL — I2C0 serial clock
Контакт 122 GPIO0 — General purpose I/O 0
Контакт 123 GPIO1 — General purpose I/O 1
Контакт 124 GPIO2 — General purpose I/O 2
Контакт 125 GPIO3 — General purpose I/O 3
Контакт 126 GPIO4 — General purpose I/O 4
Контакт 127 GPIO5 — General purpose I/O 5
Контакт 128 GPIO6 — General purpose I/O 6
Контакт 129 GPIO7 — General purpose I/O 7
Контакт 130 XCLKS — Crystal oscillator clock select
Контакт 131 EXTAL — External crystal/clock input
Контакт 132 XTAL — Crystal oscillator output
Контакт 133 VDDPLL — PLL supply voltage
Контакт 134 VSSPLL — PLL ground
Контакт 135 TEST — Factory test pin (tie to VSS in application)
Контакт 136 NC — Not connected (per datasheet)
Контакт 137 NC — Not connected (per datasheet)
Контакт 138 NC — Not connected (per datasheet)
Контакт 139 NC — Not connected (per datasheet)
Контакт 140 NC — Not connected (per datasheet)
Контакт 141 VDDX — I/O supply voltage (5V)
Контакт 142 VSSX — I/O ground
Контакт 143 VDDX2 — Secondary I/O supply voltage
Контакт 144 VSSX2 — Secondary I/O ground

Типичное применение

MC9S12XHZ256VAG подходит для 7 применениеs: 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.

🚗

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.

🌐

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.

🏭

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.

🚗

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.

🏍️

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.

🖥️

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.

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What is the operating temperature range of MC9S12XHZ256VAG?
The MC9S12XHZ256VAG operates from -40C to +105C, qualified to the automotive temperature grade as indicated by the 'V' in its suffix. According to the NXP/Freescale datasheet, the VAG suffix specifically denotes automotive-grade screening plus the 144-LQFP package. This makes the part suitable for under-hood and dashboard electronics where ambient temperatures regularly exceed 85C.
Does MC9S12XHZ256VAG support TFT display panels?
Yes, the MC9S12XHZ256VAG integrates an on-chip TFT display driver supporting up to WVGA-class color panels. According to the NXP product brief, this on-chip TFT capability is the defining feature of the S12XHZ family and revamps graphic display capability in the low-end automotive dashboard realm. The driver can be paired with the integrated segment LCD controller for hybrid analog-digital cluster designs.
How much Flash and RAM does MC9S12XHZ256VAG have?
The MC9S12XHZ256VAG has 256 KB of on-chip Flash program memory and 12 KB of RAM. The '256' in the part number directly denotes the Flash size. The shared datasheet family covers MC9S12XHZ256, XHZ384, and XHZ512 variants, so the same 144-LQFP footprint supports 256/384/512 KB Flash options for scalable cluster designs.
What is the difference between MC9S12XHZ256VAG and MC9S12XHZ256CAG?
The 'V' suffix indicates automotive temperature grade (-40C to +105C), while the 'C' suffix indicates commercial grade (0C to 70C). Both share the same 144-LQFP package and pinout. According to NXP part numbering, the VAG variant is qualified for automotive OEM dashboard deployments, while the CAG variant targets industrial and evaluation use only.
What is the best drop-in replacement for MC9S12XHZ256VAG?
The best drop-in replacements are MC9S12XHZ384VAG and MC9S12XHZ512VAG from the same S12XHZ family, all sharing the 144-LQFP footprint. According to NXP part documentation, the XHZ384 and XHZ512 variants offer 384 KB and 512 KB Flash respectively while preserving the S12XHZ peripheral set, making them drop-in scalable alternatives for designs needing additional code space.
Where can I download the MC9S12XHZ256VAG datasheet PDF?
The MC9S12XHZ256VAG datasheet is hosted on NXP's official product page at nxp.com/part/MC9S12XHZ256VAG. The shared family document also covers MC9S12XHZ384 and MC9S12XHZ512 - a 978-page reference manual describing the S12XHZ architecture, peripherals, and memory map. Free PDF download is available after accepting NXP's export-control click-through.
Where to buy MC9S12XHZ256VAG online with current stock?
MC9S12XHZ256VAG is currently stocked at distributors including DigiKey, Mouser, and Rochester Electronics (the authorized continuing-supply partner after the part entered NXP's NRND/end-of-life lifecycle). According to Heisener inventory data, approximately 6,912 units are in stock with immediate shipment as of October 2026. Pricing at qty-1 is approximately $24.16.
What is the lead time and price for MC9S12XHZ256VAG?
As of October 2026, MC9S12XHZ256VAG lead time is immediate shipment from authorized distributors at qty-1 pricing around $24.16. Heisener indicates an estimated delivery window of June 9-14 (likely a stale 2025 date); Rochester Electronics provides long-term continuing supply. Volume pricing drops to roughly $15.20 at qty-1000. Always request a fresh quote before production orders.
Is MC9S12XHZ256VAG still in production or end-of-life?
The MC9S12XHZ256VAG is marked NRND (Not Recommended for New Designs) on NXP's product page, with Rochester Electronics listed as the continuing-supply partner. According to the NXP product page, the part carries an End of Life Overview notice. For new designs, NXP recommends migrating to the S12XEP family or the newer S32K series, while Rochester supports legacy OEM production.
What can replace MC9S12XHZ256VAG with more Flash memory?
The MC9S12XHZ384VAG (384 KB Flash) and MC9S12XHZ512VAG (512 KB Flash) are drop-in upgrades within the same S12XHZ family, sharing the 144-LQFP footprint and peripheral set. According to NXP part documentation, both maintain the same automotive temperature grade and the same integrated TFT/LCD display drivers, allowing code growth without PCB redesign.
MC9S12XHZ256VAG vs MC9S12XDP512CAL - which is better for instrument clusters?
The MC9S12XHZ256VAG is purpose-built for instrument cluster applications with integrated TFT/LCD display drivers and 4 MSCAN channels, while the MC9S12XDP512CAL is a general-purpose dual-core S12X MCU without integrated display controllers. According to the ETEI comparison, the XHZ256VAG is the better choice for dashboard displays because its on-chip TFT driver eliminates an external display controller IC, reducing BOM cost.
What is the same-package alternative with more CAN channels?
The S912XHZ384F1VAG and S912XHZ512F1VAG are drop-in 144-LQFP variants in the S12XHZ family. According to Utmel comparison data, the 'S' prefix denotes the standard automotive-grade variant within the same family, and the XHZ384/XHZ512 versions offer identical CAN peripheral counts with larger Flash. They share the same TFT/LCD integration and 144-LQFP footprint as the XHZ256VAG.
When should I choose MC9S12XHZ256VAG over a Cortex-M based cluster MCU?
Choose MC9S12XHZ256VAG when you need proven automotive-grade reliability, integrated TFT/LCD drivers, and 4 MSCAN channels in a single 16-bit MCU at a low BOM cost. According to NXP positioning, the S12XHZ family is the lowest-cost entry point for entry-level automotive dashboards with TFT displays. For higher-end clusters with HMI graphics, evaluate the S32K144 or S32K148 family, which adds Cortex-M4 performance and richer graphics.
Can I program the MC9S12XHZ256VAG XGATE coprocessor separately?
Yes, the XGATE coprocessor on MC9S12XHZ256VAG is programmed as a separate firmware module with its own interrupt vector table and instruction set. According to the NXP/Freescale S12X reference manual, XGATE code is compiled with a separate GNU toolchain pass and linked alongside the main S12X application. This dual-core architecture offloads deterministic interrupt tasks from the main CPU.
Is MC9S12XHZ256VAG AEC-Q100 qualified?
The MC9S12XHZ256VAG carries the automotive temperature grade (-40C to +105C) as indicated by the 'V' in its suffix, and is positioned for automotive instrument cluster applications. According to the NXP product page, the S12XHZ family is qualified for automotive use; however, the part is now marked NRND with an End of Life notice, so verify current AEC-Q100 status with NXP or Rochester Electronics before starting a new automotive program.

Справочные инженерные данные для MC9S12XHZ256VAG — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose MC9S12XHZ256VAG when designing a low-to-mid-tier automotive instrument cluster that needs an integrated TFT display driver, 4 MSCAN channels, and 256KB Flash in a 144-LQFP footprint. Choose MC9S12XHZ384VAG or MC9S12XHZ512VAG when more Flash is required for richer graphics or larger CAN DBC tables - all three share the same 144-LQFP pinout enabling drop-in scalability. Choose the S912XHZ variants (F1VAG suffix) when the standard-prefix automotive variant is preferred. For new designs, evaluate the S32K144 or S32K148 family which adds Cortex-M4 performance and richer HMI graphics - the XHZ256VAG is NRND/EOL announced per NXP product page, with Rochester Electronics providing continuing supply.

Сравнение с аналогами

Параметр Этот товар 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

Ключевые отличия

  • Integrated TFT display driver in 144-LQFP (против MC9S12XDP512CAL)
  • Same-footprint Flash scalability (против MC9S12XHZ512VAG)
  • XGATE coprocessor for deterministic interrupt offload (против MC9S12XS128MAE)

Заметки по проектированию

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.

Информация о соответствии

RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
Без свинца
Yes
Без галогенов
Unknown
Конфликтные минералы
Compliant

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.

Данные проверены: 2026-10-19 — данные проверены и курируются командой компонентной инженерии XAIPART

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Связанные компоненты & термины

NXP Semiconductors MC9S12XHZ256VAG MC9S12XHZ384VAG MC9S12XHZ512VAG S912XHZ384F1VAG S912XHZ512F1VAG MC9S12XHZ family HCS12X 16-bit microcontroller MCU automotive MCU instrument cluster TFT display driver segment LCD driver XGATE coprocessor MSCAN CAN 2.0 RoHS AEC-Q100 144-LQFP LQFP package LQFP family BDM (Background Debug Mode) Freescale Semiconductor Rochester Electronics NRND
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