S912XHZ256F1VAG - 16-bit MCU, S12X, 256KB Flash, 80MHz | NXP
Référence : S912XHZ256F1VAG ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour S912XHZ256F1VAG — 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 S912XHZ256F1VAG (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Core Architecture, Program Memory (Flash), RAM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
S912XHZ256F1VAGR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S912XHZ512F1VAG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC9S12XHZ256VAG
✅ Remplacement direct✓ En stock
$15.2 / unité
Voir la fiche technique →S912XHZ384F1VAG
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
S912XEQ384F1VAG
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
S912XHZ256F1VAG Valeurs maximales et caractéristiques électriques
| Core | HCS12X (S12X) with XGATE coprocessor |
| Largeur du bus de données | 16-bit |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 12 KB |
| EEPROM (emulated) | 4 KB |
| Maximum CPU Clock | 80 MHz |
| Tension d'alimentation | 2.5 V / 5 V |
| Température de fonctionnement | -40C to +105C |
| Boîtier | 144-LQFP (20x20 mm) |
| Type de montage | Surface Mount |
| Nombre de broches | 144 |
| Display Capability | On-chip TFT driver (up to 6 gauges, color TFT) |
| CAN Modules | Multiple MSCAN channels |
| AEC-Q100 | Automotive qualified |
| Statut RoHS | Compliant |
Configuration des broches de S912XHZ256F1VAG
| Broche 1 | VSS — Ground reference |
| Broche 2 | VDDR — Voltage regulator supply |
| Broche 3 | VDDX — External supply (5V/3.3V) |
| Broche 4 | RESET — External reset input, active low |
| Broche 5 | MODC — Mode control |
| Broche 6 | BKGD — Background debug mode |
| Broche 7 | XTAL — Crystal oscillator input |
| Broche 8 | EXTAL — Crystal oscillator output |
| Broche 9 | VSS — Ground |
| Broche 10 | PAD0 — Port AD bit 0 / ATD input |
| Broche 11 | PAD1 — Port AD bit 1 / ATD input |
| Broche 12 | PAD2 — Port AD bit 2 / ATD input |
| Broche 13 | PAD3 — Port AD bit 3 / ATD input |
| Broche 14 | PAD4 — Port AD bit 4 / ATD input |
| Broche 15 | PAD5 — Port AD bit 5 / ATD input |
| Broche 16 | PAD6 — Port AD bit 6 / ATD input |
| Broche 17 | PAD7 — Port AD bit 7 / ATD input |
| Broche 18 | PAD8 — Port AD bit 8 / ATD input |
| Broche 19 | PAD9 — Port AD bit 9 / ATD input |
| Broche 20 | PAD10 — Port AD bit 10 / ATD input |
| Broche 21 | PAD11 — Port AD bit 11 / ATD input |
| Broche 22 | PAD12 — Port AD bit 12 / ATD input |
| Broche 23 | PAD13 — Port AD bit 13 / ATD input |
| Broche 24 | PAD14 — Port AD bit 14 / ATD input |
| Broche 25 | PAD15 — Port AD bit 15 / ATD input |
| Broche 26 | VRH — ATD reference high |
| Broche 27 | VRL — ATD reference low |
| Broche 28 | VDDA — ATD supply |
| Broche 29 | VSSA — ATD ground |
| Broche 30 | PS0 — Port S bit 0 |
| Broche 31 | PS1 — Port S bit 1 |
| Broche 32 | PS2 — Port S bit 2 |
| Broche 33 | PS3 — Port S bit 3 |
| Broche 34 | PS4 — Port S bit 4 |
| Broche 35 | PS5 — Port S bit 5 |
| Broche 36 | PS6 — Port S bit 6 |
| Broche 37 | PS7 — Port S bit 7 |
| Broche 38 | PT0 — Port T bit 0 (timer) |
| Broche 39 | PT1 — Port T bit 1 (timer) |
| Broche 40 | PT2 — Port T bit 2 (timer) |
| Broche 41 | PT3 — Port T bit 3 (timer) |
| Broche 42 | PT4 — Port T bit 4 (timer) |
| Broche 43 | PT5 — Port T bit 5 (timer) |
| Broche 44 | PT6 — Port T bit 6 (timer) |
| Broche 45 | PT7 — Port T bit 7 (timer) |
| Broche 46 | PE0 — Port E bit 0 / IRQ |
| Broche 47 | PE1 — Port E bit 1 / IRQ |
| Broche 48 | PE2 — Port E bit 2 / XIRQ |
| Broche 49 | PE3 — Port E bit 3 |
| Broche 50 | PE4 — Port E bit 4 / SCI |
| Broche 51 | PE5 — Port E bit 5 / SCI |
| Broche 52 | PE6 — Port E bit 6 / SPI |
| Broche 53 | PE7 — Port E bit 7 / SPI |
| Broche 54 | VSS — Ground |
| Broche 55 | VDDX — External supply |
| Broche 56 | PJ0 — Port J bit 0 (CAN0) |
| Broche 57 | PJ1 — Port J bit 1 (CAN0) |
| Broche 58 | PJ2 — Port J bit 2 |
| Broche 59 | PJ3 — Port J bit 3 |
| Broche 60 | PJ4 — Port J bit 4 |
| Broche 61 | PJ5 — Port J bit 5 |
| Broche 62 | PJ6 — Port J bit 6 |
| Broche 63 | PJ7 — Port J bit 7 |
| Broche 64 | PK0 — Port K bit 0 |
| Broche 65 | PK1 — Port K bit 1 |
| Broche 66 | PK2 — Port K bit 2 |
| Broche 67 | PK3 — Port K bit 3 |
| Broche 68 | PK4 — Port K bit 4 |
| Broche 69 | PK5 — Port K bit 5 |
| Broche 70 | PK6 — Port K bit 6 |
| Broche 71 | PK7 — Port K bit 7 |
| Broche 72 | PM0 — Port M bit 0 (TFT/LCD) |
| Broche 73 | PM1 — Port M bit 1 (TFT/LCD) |
| Broche 74 | PM2 — Port M bit 2 (TFT/LCD) |
| Broche 75 | PM3 — Port M bit 3 (TFT/LCD) |
| Broche 76 | PM4 — Port M bit 4 (TFT/LCD) |
| Broche 77 | PM5 — Port M bit 5 (TFT/LCD) |
| Broche 78 | PM6 — Port M bit 6 (TFT/LCD) |
| Broche 79 | PM7 — Port M bit 7 (TFT/LCD) |
| Broche 80 | PN0 — Port N bit 0 (TFT/LCD) |
| Broche 81 | PN1 — Port N bit 1 (TFT/LCD) |
| Broche 82 | PN2 — Port N bit 2 (TFT/LCD) |
| Broche 83 | PN3 — Port N bit 3 (TFT/LCD) |
| Broche 84 | PN4 — Port N bit 4 (TFT/LCD) |
| Broche 85 | PN5 — Port N bit 5 (TFT/LCD) |
| Broche 86 | PN6 — Port N bit 6 (TFT/LCD) |
| Broche 87 | PN7 — Port N bit 7 (TFT/LCD) |
| Broche 88 | PP0 — Port P bit 0 (PWM) |
| Broche 89 | PP1 — Port P bit 1 (PWM) |
| Broche 90 | PP2 — Port P bit 2 (PWM) |
| Broche 91 | PP3 — Port P bit 3 (PWM) |
| Broche 92 | PP4 — Port P bit 4 (PWM) |
| Broche 93 | PP5 — Port P bit 5 (PWM) |
| Broche 94 | PP6 — Port P bit 6 (PWM) |
| Broche 95 | PP7 — Port P bit 7 (PWM) |
| Broche 96 | PQ0 — Port Q bit 0 |
| Broche 97 | PQ1 — Port Q bit 1 |
| Broche 98 | PQ2 — Port Q bit 2 |
| Broche 99 | PQ3 — Port Q bit 3 |
| Broche 100 | PQ4 — Port Q bit 4 |
| Broche 101 | PQ5 — Port Q bit 5 |
| Broche 102 | PQ6 — Port Q bit 6 |
| Broche 103 | PQ7 — Port Q bit 7 |
| Broche 104 | PR0 — Port R bit 0 |
| Broche 105 | PR1 — Port R bit 1 |
| Broche 106 | PR2 — Port R bit 2 |
| Broche 107 | PR3 — Port R bit 3 |
| Broche 108 | PR4 — Port R bit 4 |
| Broche 109 | PR5 — Port R bit 5 |
| Broche 110 | PR6 — Port R bit 6 |
| Broche 111 | PR7 — Port R bit 7 |
| Broche 112 | VSS — Ground |
| Broche 113 | VDDX — External supply |
| Broche 114 | CAN0TX — MSCAN0 transmit |
| Broche 115 | CAN0RX — MSCAN0 receive |
| Broche 116 | CAN1TX — MSCAN1 transmit |
| Broche 117 | CAN1RX — MSCAN1 receive |
| Broche 118 | CAN2TX — MSCAN2 transmit |
| Broche 119 | CAN2RX — MSCAN2 receive |
| Broche 120 | CAN3TX — MSCAN3 transmit |
| Broche 121 | CAN3RX — MSCAN3 receive |
| Broche 122 | TXD0 — SCI0 transmit |
| Broche 123 | RXD0 — SCI0 receive |
| Broche 124 | TXD1 — SCI1 transmit |
| Broche 125 | RXD1 — SCI1 receive |
| Broche 126 | MOSI0 — SPI0 master out / slave in |
| Broche 127 | MISO0 — SPI0 master in / slave out |
| Broche 128 | SCK0 — SPI0 clock |
| Broche 129 | SS0 — SPI0 slave select |
| Broche 130 | MOSI1 — SPI1 master out / slave in |
| Broche 131 | MISO1 — SPI1 master in / slave out |
| Broche 132 | SCK1 — SPI1 clock |
| Broche 133 | SS1 — SPI1 slave select |
| Broche 134 | TCLK — Timer clock input |
| Broche 135 | IOC — Input capture / output compare |
| Broche 136 | VSS — Ground |
| Broche 137 | VDDX — External supply |
| Broche 138 | TFTCLK — TFT display clock |
| Broche 139 | TFTVSYNC — TFT vertical sync |
| Broche 140 | TFTHSYNC — TFT horizontal sync |
| Broche 141 | TFTDE — TFT data enable |
| Broche 142 | TFTD0 — TFT data bit 0 |
| Broche 143 | TFTD1 — TFT data bit 1 |
| Broche 144 | VSS — Ground |
Applications typiques
S912XHZ256F1VAG convient pour 7 applications: 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.
Recommandé
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.
Recommandé
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%.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour S912XHZ256F1VAG — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
