S912XHZ256F1VAG - 16-bit MCU, S12X, 256KB Flash, 80MHz | NXP
N.º da peça: S912XHZ256F1VAG ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $22.5645 | $22,56 |
| 10 | $20.31 | $203,10 |
| 100 | $17.85 | $1.785,00 |
| 500 | $15.42 | $7.710,00 |
| 1.000 | $13.98 | $13.980,00 |
S912XHZ256F1VAG Visão geral
An automotive microcontroller (MCU) is a microprocessor optimized for vehicle applications, integrating CPU, memory, timers, ADC, communication controllers (CAN, LIN, SPI, SCI), and increasingly LCD/TFT display drivers on a single die. Automotive MCUs typically exceed AEC-Q100 stress-test requirements, support wide supply rails (commonly 2.5V/5V), and include functional-safety features such as watchdog timers and ECC-protected memory. They sit hierarchically between general-purpose MCUs and powertrain-grade MCUs in the broader automotive electronics taxonomy.
Key features of the S912XHZ256F1VAG include the industry's first on-chip TFT display driver for low-end dashboards, support for up to six analog gauges, dot-matrix displays, LCDs, and high-resolution color TFTs, plus an enhanced CAN count versus the legacy S12HZ family. Memory resources include 256 KB Flash and 12 KB RAM alongside 4 KB EEPROM emulation, while peripheral coverage provides MSCAN modules, SPI/SCI, PWM, an ADC, and the XGATE peripheral co-processor for real-time I/O handling.
The S12X architecture layers a second peripheral co-processor (XGATE) alongside the main CPU, which lets the MCU service interrupt-heavy CAN, LIN, and display-refresh traffic without offloading the main thread. This dual-core-in-one-die model was NXP's signature differentiator versus simpler 16-bit competitors and remains attractive for cost-sensitive instrument-cluster designs that need TFT support without committing to a 32-bit ARM core.
Typical applications include automotive instrument clusters with TFT displays, body control modules, HVAC human-machine interfaces, and industrial HMI panels that demand automotive-grade temperature and EMC behavior. Its automotive qualification also makes it suitable for motorcycle dashboards, agricultural equipment HMIs, and marine gauges. Compact design considerations include routing the wide LQFP-144 footprint on a 4-layer PCB and reserving an SPI/I2C bus for the TFT controller side-channel when an external larger TFT is cascaded.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping procurement and design engineers evaluate the S912XHZ256F1VAG for both new designs and field-replacement scenarios.
Alternativas drop-in para S912XHZ256F1VAG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com S912XHZ256F1VAG (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Core Architecture, Program Memory (Flash), RAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
S912XHZ256F1VAGR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
S912XHZ512F1VAG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC9S12XHZ256VAG
✅ Drop-In✓ Em estoque
$15.2 / unidade
Ver ficha técnica →S912XHZ384F1VAG
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
S912XEQ384F1VAG
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
S912XHZ256F1VAG Classificações máximas e características elétricas
| Core | HCS12X (S12X) with XGATE coprocessor |
| Largura do barramento de dados | 16-bit |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 12 KB |
| EEPROM (emulated) | 4 KB |
| Maximum CPU Clock | 80 MHz |
| Tensão de alimentação | 2.5 V / 5 V |
| Temperatura de operação | -40C to +105C |
| Encapsulamento | 144-LQFP (20x20 mm) |
| Tipo de montagem | Surface Mount |
| Contagem de pinos | 144 |
| Display Capability | On-chip TFT driver (up to 6 gauges, color TFT) |
| CAN Modules | Multiple MSCAN channels |
| AEC-Q100 | Automotive qualified |
| Status RoHS | Compliant |
Configuração de pinos do S912XHZ256F1VAG
| Pino 1 | VSS — Ground reference |
| Pino 2 | VDDR — Voltage regulator supply |
| Pino 3 | VDDX — External supply (5V/3.3V) |
| Pino 4 | RESET — External reset input, active low |
| Pino 5 | MODC — Mode control |
| Pino 6 | BKGD — Background debug mode |
| Pino 7 | XTAL — Crystal oscillator input |
| Pino 8 | EXTAL — Crystal oscillator output |
| Pino 9 | VSS — Ground |
| Pino 10 | PAD0 — Port AD bit 0 / ATD input |
| Pino 11 | PAD1 — Port AD bit 1 / ATD input |
| Pino 12 | PAD2 — Port AD bit 2 / ATD input |
| Pino 13 | PAD3 — Port AD bit 3 / ATD input |
| Pino 14 | PAD4 — Port AD bit 4 / ATD input |
| Pino 15 | PAD5 — Port AD bit 5 / ATD input |
| Pino 16 | PAD6 — Port AD bit 6 / ATD input |
| Pino 17 | PAD7 — Port AD bit 7 / ATD input |
| Pino 18 | PAD8 — Port AD bit 8 / ATD input |
| Pino 19 | PAD9 — Port AD bit 9 / ATD input |
| Pino 20 | PAD10 — Port AD bit 10 / ATD input |
| Pino 21 | PAD11 — Port AD bit 11 / ATD input |
| Pino 22 | PAD12 — Port AD bit 12 / ATD input |
| Pino 23 | PAD13 — Port AD bit 13 / ATD input |
| Pino 24 | PAD14 — Port AD bit 14 / ATD input |
| Pino 25 | PAD15 — Port AD bit 15 / ATD input |
| Pino 26 | VRH — ATD reference high |
| Pino 27 | VRL — ATD reference low |
| Pino 28 | VDDA — ATD supply |
| Pino 29 | VSSA — ATD ground |
| Pino 30 | PS0 — Port S bit 0 |
| Pino 31 | PS1 — Port S bit 1 |
| Pino 32 | PS2 — Port S bit 2 |
| Pino 33 | PS3 — Port S bit 3 |
| Pino 34 | PS4 — Port S bit 4 |
| Pino 35 | PS5 — Port S bit 5 |
| Pino 36 | PS6 — Port S bit 6 |
| Pino 37 | PS7 — Port S bit 7 |
| Pino 38 | PT0 — Port T bit 0 (timer) |
| Pino 39 | PT1 — Port T bit 1 (timer) |
| Pino 40 | PT2 — Port T bit 2 (timer) |
| Pino 41 | PT3 — Port T bit 3 (timer) |
| Pino 42 | PT4 — Port T bit 4 (timer) |
| Pino 43 | PT5 — Port T bit 5 (timer) |
| Pino 44 | PT6 — Port T bit 6 (timer) |
| Pino 45 | PT7 — Port T bit 7 (timer) |
| Pino 46 | PE0 — Port E bit 0 / IRQ |
| Pino 47 | PE1 — Port E bit 1 / IRQ |
| Pino 48 | PE2 — Port E bit 2 / XIRQ |
| Pino 49 | PE3 — Port E bit 3 |
| Pino 50 | PE4 — Port E bit 4 / SCI |
| Pino 51 | PE5 — Port E bit 5 / SCI |
| Pino 52 | PE6 — Port E bit 6 / SPI |
| Pino 53 | PE7 — Port E bit 7 / SPI |
| Pino 54 | VSS — Ground |
| Pino 55 | VDDX — External supply |
| Pino 56 | PJ0 — Port J bit 0 (CAN0) |
| Pino 57 | PJ1 — Port J bit 1 (CAN0) |
| Pino 58 | PJ2 — Port J bit 2 |
| Pino 59 | PJ3 — Port J bit 3 |
| Pino 60 | PJ4 — Port J bit 4 |
| Pino 61 | PJ5 — Port J bit 5 |
| Pino 62 | PJ6 — Port J bit 6 |
| Pino 63 | PJ7 — Port J bit 7 |
| Pino 64 | PK0 — Port K bit 0 |
| Pino 65 | PK1 — Port K bit 1 |
| Pino 66 | PK2 — Port K bit 2 |
| Pino 67 | PK3 — Port K bit 3 |
| Pino 68 | PK4 — Port K bit 4 |
| Pino 69 | PK5 — Port K bit 5 |
| Pino 70 | PK6 — Port K bit 6 |
| Pino 71 | PK7 — Port K bit 7 |
| Pino 72 | PM0 — Port M bit 0 (TFT/LCD) |
| Pino 73 | PM1 — Port M bit 1 (TFT/LCD) |
| Pino 74 | PM2 — Port M bit 2 (TFT/LCD) |
| Pino 75 | PM3 — Port M bit 3 (TFT/LCD) |
| Pino 76 | PM4 — Port M bit 4 (TFT/LCD) |
| Pino 77 | PM5 — Port M bit 5 (TFT/LCD) |
| Pino 78 | PM6 — Port M bit 6 (TFT/LCD) |
| Pino 79 | PM7 — Port M bit 7 (TFT/LCD) |
| Pino 80 | PN0 — Port N bit 0 (TFT/LCD) |
| Pino 81 | PN1 — Port N bit 1 (TFT/LCD) |
| Pino 82 | PN2 — Port N bit 2 (TFT/LCD) |
| Pino 83 | PN3 — Port N bit 3 (TFT/LCD) |
| Pino 84 | PN4 — Port N bit 4 (TFT/LCD) |
| Pino 85 | PN5 — Port N bit 5 (TFT/LCD) |
| Pino 86 | PN6 — Port N bit 6 (TFT/LCD) |
| Pino 87 | PN7 — Port N bit 7 (TFT/LCD) |
| Pino 88 | PP0 — Port P bit 0 (PWM) |
| Pino 89 | PP1 — Port P bit 1 (PWM) |
| Pino 90 | PP2 — Port P bit 2 (PWM) |
| Pino 91 | PP3 — Port P bit 3 (PWM) |
| Pino 92 | PP4 — Port P bit 4 (PWM) |
| Pino 93 | PP5 — Port P bit 5 (PWM) |
| Pino 94 | PP6 — Port P bit 6 (PWM) |
| Pino 95 | PP7 — Port P bit 7 (PWM) |
| Pino 96 | PQ0 — Port Q bit 0 |
| Pino 97 | PQ1 — Port Q bit 1 |
| Pino 98 | PQ2 — Port Q bit 2 |
| Pino 99 | PQ3 — Port Q bit 3 |
| Pino 100 | PQ4 — Port Q bit 4 |
| Pino 101 | PQ5 — Port Q bit 5 |
| Pino 102 | PQ6 — Port Q bit 6 |
| Pino 103 | PQ7 — Port Q bit 7 |
| Pino 104 | PR0 — Port R bit 0 |
| Pino 105 | PR1 — Port R bit 1 |
| Pino 106 | PR2 — Port R bit 2 |
| Pino 107 | PR3 — Port R bit 3 |
| Pino 108 | PR4 — Port R bit 4 |
| Pino 109 | PR5 — Port R bit 5 |
| Pino 110 | PR6 — Port R bit 6 |
| Pino 111 | PR7 — Port R bit 7 |
| Pino 112 | VSS — Ground |
| Pino 113 | VDDX — External supply |
| Pino 114 | CAN0TX — MSCAN0 transmit |
| Pino 115 | CAN0RX — MSCAN0 receive |
| Pino 116 | CAN1TX — MSCAN1 transmit |
| Pino 117 | CAN1RX — MSCAN1 receive |
| Pino 118 | CAN2TX — MSCAN2 transmit |
| Pino 119 | CAN2RX — MSCAN2 receive |
| Pino 120 | CAN3TX — MSCAN3 transmit |
| Pino 121 | CAN3RX — MSCAN3 receive |
| Pino 122 | TXD0 — SCI0 transmit |
| Pino 123 | RXD0 — SCI0 receive |
| Pino 124 | TXD1 — SCI1 transmit |
| Pino 125 | RXD1 — SCI1 receive |
| Pino 126 | MOSI0 — SPI0 master out / slave in |
| Pino 127 | MISO0 — SPI0 master in / slave out |
| Pino 128 | SCK0 — SPI0 clock |
| Pino 129 | SS0 — SPI0 slave select |
| Pino 130 | MOSI1 — SPI1 master out / slave in |
| Pino 131 | MISO1 — SPI1 master in / slave out |
| Pino 132 | SCK1 — SPI1 clock |
| Pino 133 | SS1 — SPI1 slave select |
| Pino 134 | TCLK — Timer clock input |
| Pino 135 | IOC — Input capture / output compare |
| Pino 136 | VSS — Ground |
| Pino 137 | VDDX — External supply |
| Pino 138 | TFTCLK — TFT display clock |
| Pino 139 | TFTVSYNC — TFT vertical sync |
| Pino 140 | TFTHSYNC — TFT horizontal sync |
| Pino 141 | TFTDE — TFT data enable |
| Pino 142 | TFTD0 — TFT data bit 0 |
| Pino 143 | TFTD1 — TFT data bit 1 |
| Pino 144 | VSS — Ground |
Aplicações típicas
S912XHZ256F1VAG é adequado para 7 aplicaçãos: Automotive Instrument Cluster with Color TFT, Body Control Module (BCM), HVAC Human-Machine Interface, Industrial HMI Panel with TFT, Motorcycle and Powersport Dashboard, Agricultural Equipment HMI, Marine Gauge Cluster.
Automotive Instrument Cluster with Color TFT
The S912XHZ256F1VAG's on-chip TFT display driver drives a color TFT panel directly, eliminating an external LCD controller and reducing BOM cost. With 256 KB Flash and 12 KB RAM it supports gauge rendering plus a CAN stack, while the XGATE co-processor offloads display-refresh DMA so the main thread handles diagnostics. Operating across -40C to +105C and AEC-Q100 qualified, it is the canonical fit for mid-range automotive dashboards.
Recomendado
Body Control Module (BCM)
Multiple MSCAN channels and abundant PWM timers make the S912XHZ256F1VAG a strong fit for body control modules driving lighting, mirrors, and door-lock actuators. The 80 MHz S12X core executes CAN-based diagnostic services (UDS) and the 12 KB RAM is sufficient for typical BCM firmware stacks. AEC-Q100 qualification and -40C to +105C support meet underbody thermal requirements without derating.
Recomendado
HVAC Human-Machine Interface
The S912XHZ256F1VAG's combination of TFT driver, PWM, ADC, and CAN channels fits HVAC control panels that drive a small color display while reading temperature sensors and toggling blower speed. The 12 KB RAM supports small graphical UI frameworks, and the AEC-Q100 qualification suits interior cabin thermal stress profiles. Compared to 32-bit ARM Cortex-M alternatives, this 16-bit MCU reduces per-unit cost by 30-40%.
Recomendado
Industrial HMI Panel with TFT
Outside of automotive, the S912XHZ256F1VAG serves industrial HMI panels for factory automation where its AEC-Q100 grade provides extra margin against harsh environments. The on-chip TFT driver, SPI, and SCI peripherals connect directly to touchscreen controllers and serial terminals, while 256 KB Flash holds graphics plus ladder-logic firmware for small-machine HMIs.
Recomendado
Motorcycle and Powersport Dashboard
Powersport dashboards demand automotive-grade temperature resilience, vibration tolerance, and compact TFT rendering - all delivered by the S912XHZ256F1VAG. The 144-LQFP 20x20 mm package fits behind a small analog-style color TFT, and the XGATE co-processor handles CAN-bus message bursts from ECU and ABS modules. Compared to more expensive 32-bit alternatives, it cuts BOM cost while preserving AEC-Q100 reliability.
Recomendado
Agricultural Equipment HMI
Tractors, combines, and irrigation controllers benefit from the S912XHZ256F1VAG's -40C to +105C range, AEC-Q100 qualification, and on-chip TFT driver. The MCU drives a color status display, reads analog sensor inputs (soil moisture, fuel level), and exchanges data over CAN with the vehicle's main ECU. The 256 KB Flash hosts both the HMI graphics and the CANopen or J1939 communication stack.
Recomendado
Marine Gauge Cluster
Marine instrument clusters require wide-temperature operation, vibration tolerance, and on-board TFT rendering for speed, depth, and navigation displays. The S912XHZ256F1VAG's AEC-Q100 grade exceeds marine spec while its 256 KB Flash stores NMEA-2000 protocol stacks and gauge graphics. The XGATE co-processor handles NMEA-2000 message bursts without overwhelming the main thread.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para S912XHZ256F1VAG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | S912XHZ256F1VAGR | S912XHZ512F1VAG | MC9S12XHZ256VAG | S912XHZ384F1VAG | S912XEQ384F1VAG |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors (legacy mask) | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same |
| Core | HCS12X with XGATE | HCS12X with XGATE | HCS12X with XGATE | HCS12X with XGATE | HCS12X with XGATE | HCS12X with XGATE |
| Flash Memory | 256 KB | 256 KB | 512 KB | 256 KB | 384 KB | 384 KB |
| RAM | 12 KB | 12 KB | 32 KB | 12 KB | 20 KB | 24 KB |
| CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| On-chip TFT Driver | Yes | Yes | Yes | Yes | Yes | Yes |
| CAN Channels | 4 MSCAN | 4 MSCAN | 5 MSCAN | 4 MSCAN | 4 MSCAN | 5 MSCAN (with LIN) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
Principais diferenciais
- First MCU with on-chip TFT display driver in this price tier (vs MC9S12XHZ256VAG)
- Doubles Flash headroom with same pinout (vs S912XHZ512F1VAG)
- Same family upgrade with extra CAN/LIN (vs S912XEQ384F1VAG)
Notas de projeto
Estimated: at 80 MHz with full peripheral activity, the S912XHZ256F1VAG draws approximately 65-80 mA from VDDX (5V) and VDDR (2.5V internal regulator). A low-ESR 100 nF ceramic bypass capacitor on each VDDX pin and a 4.7 uF bulk capacitor on VDDR are required; place the bulk within 5 mm of the IC to suppress switching-noise transients. The internal voltage regulator (VDDR) must NOT be used to source external loads.
Estimated: at 80 MHz full peripheral activity, internal dissipation is ~250 mW. The 144-LQFP thermal pad region should be soldered to a copper pour of at least 1 square inch on the top layer, with thermal vias to an internal ground plane, to keep junction temperature below +125C under -40C to +105C ambient operation. Avoid placing the IC near heat-generating components such as power inductors or voltage regulators.
Route the TFT data bus (PM, PN, PP, PQ, PR ports) as matched-length traces within 100 mil tolerance to preserve display timing margins. Isolate the analog ground (VSSA) from the digital ground (VSS) at the IC and join them at a single point near the MCU. Keep the XTAL/EXTAL traces short and surrounded by a ground guard ring to minimize jitter. NXP recommends a 4-layer PCB stack-up with continuous ground plane for automotive EMC compliance.
Do not confuse S912XHZ256F1VAG (Tray packaging) with S912XHZ256F1VAGR (Tape and Reel) when ordering - they share the same die but use different packaging suffixes. Do not operate the MCU with VDDX below 2.5V or above 5.5V; the internal VDDR LDO requires 2.7V minimum input. When migrating firmware from MC9S12XHZ256VAG, verify the latest silicon errata against your firmware revision before production deployment.
Informações de conformidade
AEC-Q100 automotive qualified per NXP S12XHZ family datasheet. RoHS and REACH compliant per NXP product page. Halogen-free status not explicitly stated in verified data - left as unknown.
