S912XHZ256F1VAG - 16-bit MCU, S12X, 256KB Flash, 80MHz | NXP
MPN: S912XHZ256F1VAG ✓ AktifS912XHZ256F1VAG Ringkasan
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.
Alternatif penggantian untuk S912XHZ256F1VAG — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian S912XHZ256F1VAG (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, Core Architecture, Program Memory (Flash), RAM.
S912XHZ256F1VAGR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
S912XHZ512F1VAG
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MC9S12XHZ256VAG
✅ Drop-InKontak untuk harga
Lihat Datasheet →S912XHZ384F1VAG
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
S912XEQ384F1VAG
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
S912XHZ256F1VAG Rating Maksimal & Karakteristik Listrik
| Core | HCS12X (S12X) with XGATE coprocessor |
| Lebar Bus Data | 16-bit |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 12 KB |
| EEPROM (emulated) | 4 KB |
| Maximum CPU Clock | 80 MHz |
| Tegangan Pemuat | 2.5 V / 5 V |
| Suhu Kerja | -40C to +105C |
| Paket | 144-LQFP (20x20 mm) |
| Tipe Mounting | Surface Mount |
| Jumlah Pin | 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 |
Konfigurasi Pin S912XHZ256F1VAG
| Pin produk 1 | VSS — Ground reference |
| Pin produk 2 | VDDR — Voltage regulator supply |
| Pin produk 3 | VDDX — External supply (5V/3.3V) |
| Pin produk 4 | RESET — External reset input, active low |
| Pin produk 5 | MODC — Mode control |
| Pin produk 6 | BKGD — Background debug mode |
| Pin produk 7 | XTAL — Crystal oscillator input |
| Pin produk 8 | EXTAL — Crystal oscillator output |
| Pin produk 9 | VSS — Ground |
| Pin produk 10 | PAD0 — Port AD bit 0 / ATD input |
| Pin produk 11 | PAD1 — Port AD bit 1 / ATD input |
| Pin produk 12 | PAD2 — Port AD bit 2 / ATD input |
| Pin produk 13 | PAD3 — Port AD bit 3 / ATD input |
| Pin produk 14 | PAD4 — Port AD bit 4 / ATD input |
| Pin produk 15 | PAD5 — Port AD bit 5 / ATD input |
| Pin produk 16 | PAD6 — Port AD bit 6 / ATD input |
| Pin produk 17 | PAD7 — Port AD bit 7 / ATD input |
| Pin produk 18 | PAD8 — Port AD bit 8 / ATD input |
| Pin produk 19 | PAD9 — Port AD bit 9 / ATD input |
| Pin produk 20 | PAD10 — Port AD bit 10 / ATD input |
| Pin produk 21 | PAD11 — Port AD bit 11 / ATD input |
| Pin produk 22 | PAD12 — Port AD bit 12 / ATD input |
| Pin produk 23 | PAD13 — Port AD bit 13 / ATD input |
| Pin produk 24 | PAD14 — Port AD bit 14 / ATD input |
| Pin produk 25 | PAD15 — Port AD bit 15 / ATD input |
| Pin produk 26 | VRH — ATD reference high |
| Pin produk 27 | VRL — ATD reference low |
| Pin produk 28 | VDDA — ATD supply |
| Pin produk 29 | VSSA — ATD ground |
| Pin produk 30 | PS0 — Port S bit 0 |
| Pin produk 31 | PS1 — Port S bit 1 |
| Pin produk 32 | PS2 — Port S bit 2 |
| Pin produk 33 | PS3 — Port S bit 3 |
| Pin produk 34 | PS4 — Port S bit 4 |
| Pin produk 35 | PS5 — Port S bit 5 |
| Pin produk 36 | PS6 — Port S bit 6 |
| Pin produk 37 | PS7 — Port S bit 7 |
| Pin produk 38 | PT0 — Port T bit 0 (timer) |
| Pin produk 39 | PT1 — Port T bit 1 (timer) |
| Pin produk 40 | PT2 — Port T bit 2 (timer) |
| Pin produk 41 | PT3 — Port T bit 3 (timer) |
| Pin produk 42 | PT4 — Port T bit 4 (timer) |
| Pin produk 43 | PT5 — Port T bit 5 (timer) |
| Pin produk 44 | PT6 — Port T bit 6 (timer) |
| Pin produk 45 | PT7 — Port T bit 7 (timer) |
| Pin produk 46 | PE0 — Port E bit 0 / IRQ |
| Pin produk 47 | PE1 — Port E bit 1 / IRQ |
| Pin produk 48 | PE2 — Port E bit 2 / XIRQ |
| Pin produk 49 | PE3 — Port E bit 3 |
| Pin produk 50 | PE4 — Port E bit 4 / SCI |
| Pin produk 51 | PE5 — Port E bit 5 / SCI |
| Pin produk 52 | PE6 — Port E bit 6 / SPI |
| Pin produk 53 | PE7 — Port E bit 7 / SPI |
| Pin produk 54 | VSS — Ground |
| Pin produk 55 | VDDX — External supply |
| Pin produk 56 | PJ0 — Port J bit 0 (CAN0) |
| Pin produk 57 | PJ1 — Port J bit 1 (CAN0) |
| Pin produk 58 | PJ2 — Port J bit 2 |
| Pin produk 59 | PJ3 — Port J bit 3 |
| Pin produk 60 | PJ4 — Port J bit 4 |
| Pin produk 61 | PJ5 — Port J bit 5 |
| Pin produk 62 | PJ6 — Port J bit 6 |
| Pin produk 63 | PJ7 — Port J bit 7 |
| Pin produk 64 | PK0 — Port K bit 0 |
| Pin produk 65 | PK1 — Port K bit 1 |
| Pin produk 66 | PK2 — Port K bit 2 |
| Pin produk 67 | PK3 — Port K bit 3 |
| Pin produk 68 | PK4 — Port K bit 4 |
| Pin produk 69 | PK5 — Port K bit 5 |
| Pin produk 70 | PK6 — Port K bit 6 |
| Pin produk 71 | PK7 — Port K bit 7 |
| Pin produk 72 | PM0 — Port M bit 0 (TFT/LCD) |
| Pin produk 73 | PM1 — Port M bit 1 (TFT/LCD) |
| Pin produk 74 | PM2 — Port M bit 2 (TFT/LCD) |
| Pin produk 75 | PM3 — Port M bit 3 (TFT/LCD) |
| Pin produk 76 | PM4 — Port M bit 4 (TFT/LCD) |
| Pin produk 77 | PM5 — Port M bit 5 (TFT/LCD) |
| Pin produk 78 | PM6 — Port M bit 6 (TFT/LCD) |
| Pin produk 79 | PM7 — Port M bit 7 (TFT/LCD) |
| Pin produk 80 | PN0 — Port N bit 0 (TFT/LCD) |
| Pin produk 81 | PN1 — Port N bit 1 (TFT/LCD) |
| Pin produk 82 | PN2 — Port N bit 2 (TFT/LCD) |
| Pin produk 83 | PN3 — Port N bit 3 (TFT/LCD) |
| Pin produk 84 | PN4 — Port N bit 4 (TFT/LCD) |
| Pin produk 85 | PN5 — Port N bit 5 (TFT/LCD) |
| Pin produk 86 | PN6 — Port N bit 6 (TFT/LCD) |
| Pin produk 87 | PN7 — Port N bit 7 (TFT/LCD) |
| Pin produk 88 | PP0 — Port P bit 0 (PWM) |
| Pin produk 89 | PP1 — Port P bit 1 (PWM) |
| Pin produk 90 | PP2 — Port P bit 2 (PWM) |
| Pin produk 91 | PP3 — Port P bit 3 (PWM) |
| Pin produk 92 | PP4 — Port P bit 4 (PWM) |
| Pin produk 93 | PP5 — Port P bit 5 (PWM) |
| Pin produk 94 | PP6 — Port P bit 6 (PWM) |
| Pin produk 95 | PP7 — Port P bit 7 (PWM) |
| Pin produk 96 | PQ0 — Port Q bit 0 |
| Pin produk 97 | PQ1 — Port Q bit 1 |
| Pin produk 98 | PQ2 — Port Q bit 2 |
| Pin produk 99 | PQ3 — Port Q bit 3 |
| Pin produk 100 | PQ4 — Port Q bit 4 |
| Pin produk 101 | PQ5 — Port Q bit 5 |
| Pin produk 102 | PQ6 — Port Q bit 6 |
| Pin produk 103 | PQ7 — Port Q bit 7 |
| Pin produk 104 | PR0 — Port R bit 0 |
| Pin produk 105 | PR1 — Port R bit 1 |
| Pin produk 106 | PR2 — Port R bit 2 |
| Pin produk 107 | PR3 — Port R bit 3 |
| Pin produk 108 | PR4 — Port R bit 4 |
| Pin produk 109 | PR5 — Port R bit 5 |
| Pin produk 110 | PR6 — Port R bit 6 |
| Pin produk 111 | PR7 — Port R bit 7 |
| Pin produk 112 | VSS — Ground |
| Pin produk 113 | VDDX — External supply |
| Pin produk 114 | CAN0TX — MSCAN0 transmit |
| Pin produk 115 | CAN0RX — MSCAN0 receive |
| Pin produk 116 | CAN1TX — MSCAN1 transmit |
| Pin produk 117 | CAN1RX — MSCAN1 receive |
| Pin produk 118 | CAN2TX — MSCAN2 transmit |
| Pin produk 119 | CAN2RX — MSCAN2 receive |
| Pin produk 120 | CAN3TX — MSCAN3 transmit |
| Pin produk 121 | CAN3RX — MSCAN3 receive |
| Pin produk 122 | TXD0 — SCI0 transmit |
| Pin produk 123 | RXD0 — SCI0 receive |
| Pin produk 124 | TXD1 — SCI1 transmit |
| Pin produk 125 | RXD1 — SCI1 receive |
| Pin produk 126 | MOSI0 — SPI0 master out / slave in |
| Pin produk 127 | MISO0 — SPI0 master in / slave out |
| Pin produk 128 | SCK0 — SPI0 clock |
| Pin produk 129 | SS0 — SPI0 slave select |
| Pin produk 130 | MOSI1 — SPI1 master out / slave in |
| Pin produk 131 | MISO1 — SPI1 master in / slave out |
| Pin produk 132 | SCK1 — SPI1 clock |
| Pin produk 133 | SS1 — SPI1 slave select |
| Pin produk 134 | TCLK — Timer clock input |
| Pin produk 135 | IOC — Input capture / output compare |
| Pin produk 136 | VSS — Ground |
| Pin produk 137 | VDDX — External supply |
| Pin produk 138 | TFTCLK — TFT display clock |
| Pin produk 139 | TFTVSYNC — TFT vertical sync |
| Pin produk 140 | TFTHSYNC — TFT horizontal sync |
| Pin produk 141 | TFTDE — TFT data enable |
| Pin produk 142 | TFTD0 — TFT data bit 0 |
| Pin produk 143 | TFTD1 — TFT data bit 1 |
| Pin produk 144 | VSS — Ground |
Aplikasi Umum
S912XHZ256F1VAG cocok untuk 7 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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%.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk S912XHZ256F1VAG — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- First MCU with on-chip TFT display driver in this price tier (vsMC9S12XHZ256VAG)
- Doubles Flash headroom with same pinout (vsS912XHZ512F1VAG)
- Same family upgrade with extra CAN/LIN (vsS912XEQ384F1VAG)
Catatan Desain
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.
Informasi Konformitas
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.
