S912XET512J3VALR - 16-bit S12X MCU 512KB Flash 50MHz | NXP | 112-LQFP
MPN: S912XET512J3VALR ✓ Hoạt độngS912XET512J3VALR Tóm tắt
An HCS12X microcontroller is a 16-bit MCU family that extends the classic S12 architecture with an enhanced S12X CPU core plus a peripheral co-processor (XGATE) capable of offloading interrupt-driven tasks. Microcontrollers in this category sit under the broader hierarchy of embedded processors -> microcontrollers -> 16-bit MCUs -> automotive MCUs, and they are differentiated from 32-bit ARM Cortex-M parts by their deterministic interrupt latency, large Flash-to-pin ratio, and integrated CAN/LIN/SPI peripherals suited to body and chassis ECUs.
Key features include 512 KB Flash (512K x 8) with 4 KB EEPROM emulation, 32 KB RAM, an XGATE co-processor for virtual peripherals, a 12-bit ADC with 3 us conversion time, an Enhanced Capture Timer (ECT), Periodic Interrupt Timer (PIT), and a Real Time Interrupt (RTI). The device integrates a Memory Protection Unit supporting supervisor/user modes for system integrity, a four-channel PWM, two SCI, two SPI, an I2C, and multiple CAN 2.0A/B controllers. Operating voltage supports 1.8V core / 2.8V or 5V I/O domains.
The S12X CPU core delivers 32-bit-style instruction performance while retaining 16-bit code density. XGATE runs at twice the bus speed (up to 100 MHz) and offloads interrupt service routines, freeing the main CPU for control-loop computation. The on-chip voltage regulator and PLL simplify external power design - typically only a single 5V supply and decoupling capacitors are required at the PCB.
Typical applications include automotive body control modules, instrument clusters, HVAC controllers, steering-angle sensors, seat and mirror controllers, and CAN/LIN gateway nodes. The wide operating voltage range also supports industrial CAN-node designs and 24V truck body electronics with external regulation. AEC-Q100 qualification and PPAP documentation support OEM source approval.
Designers should pair the MCU with a 100 nF + 4.7 uF decoupling network on each VDD pin and route the ECLK/XIRQ/Reset signals with short traces. For CAN bus applications, place a TJA1050 or TJA1042 transceiver within 50 mm of the CAN pins and provide a 120 ohm split termination. The internal PLL requires a 4-16 MHz crystal with the recommended load capacitance listed in the datasheet.
This page synthesizes distributor pricing, drop-in alternatives within the S12X family, and practical design notes not assembled in the manufacturer datasheet alone. Engineers evaluating long-life automotive programs will find the same-package alternatives list particularly useful for second-sourcing.
Bộ thay thế dễ dàng lắp đặt cho S912XET512J3VALR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với S912XET512J3VALR (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Flash Memory, Core Architecture, Mounting Type.
S912XET512J3MAGR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XET512J2VAGR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XET512BMAGR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S912XEG384J2VAL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S9S12XF384J2MLMR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →S912XET512J3VALR Tỷ lệ tối đa & tính chất điện
| Product Type | Microcontroller (MCU) |
| Core Architecture | HCS12X (S12X CPU + XGATE co-processor) |
| Bề rộng đường dữ liệu | 16-bit |
| CPU Core Count | 2 (S12X CPU + XGATE) |
| Maximum CPU Frequency | 50 MHz (S12X CPU) / 100 MHz (XGATE) |
| Program Flash Memory | 512 KB (512K x 8) |
| EEPROM (Emulated) | 4 KB |
| ADC | 12-bit, 3 us conversion time |
| Điện áp cung cấp | 1.8 V (core) / 2.8 V or 5 V (I/O) |
| Nhiệt độ hoạt động | -40C to +105C (Automotive Grade) |
| Hộp | 112-pin LQFP (20 x 20 mm) |
| Kiểu lắp đặt | Surface Mount |
| AEC-Q100 Qualified | Yes (Automotive) |
| Communications | CAN 2.0A/B, SCI (UART), SPI, I2C |
| Timers | ECT, PIT, RTI, PWM |
| Memory Protection Unit | Yes (supervisor/user modes) |
Cấu hình chân S912XET512J3VALR
| Chân 1 | VDDR — Voltage regulator supply input |
| Chân 2 | VDDX1 — External supply (I/O segment 1) |
| Chân 3 | VDDX2 — External supply (I/O segment 2) |
| Chân 4 | VSSX1 — Ground (I/O segment 1) |
| Chân 5 | VSSX2 — Ground (I/O segment 2) |
| Chân 6 | RESET — External reset input (active low) |
| Chân 7 | TEST — Test mode enable (must be tied to VSS for normal operation) |
| Chân 8 | XIRQ — Non-maskable interrupt request |
| Chân 9 | IRQ — Maskable interrupt request |
| Chân 10 | MODC — Mode selection (single-chip/expanded) |
| Chân 11 | PAD0 — Port AD bit 0 (also AN0) |
| Chân 12 | PAD1 — Port AD bit 1 (also AN1) |
| Chân 13 | PAD2 — Port AD bit 2 (also AN2) |
| Chân 14 | PAD3 — Port AD bit 3 (also AN3) |
| Chân 15 | PAD4 — Port AD bit 4 (also AN4) |
| Chân 16 | PAD5 — Port AD bit 5 (also AN5) |
| Chân 17 | PAD6 — Port AD bit 6 (also AN6) |
| Chân 18 | PAD7 — Port AD bit 7 (also AN7) |
| Chân 19 | PAD8 — Port AD bit 8 (also AN8) |
| Chân 20 | PAD9 — Port AD bit 9 (also AN9) |
| Chân 21 | PAD10 — Port AD bit 10 (also AN10) |
| Chân 22 | PAD11 — Port AD bit 11 (also AN11) |
| Chân 23 | PAD12 — Port AD bit 12 (also AN12) |
| Chân 24 | PAD13 — Port AD bit 13 (also AN13) |
| Chân 25 | PAD14 — Port AD bit 14 (also AN14) |
| Chân 26 | PAD15 — Port AD bit 15 (also AN15) |
| Chân 27 | PWM0 — PWM channel 0 output |
| Chân 28 | PWM1 — PWM channel 1 output |
| Chân 29 | PWM2 — PWM channel 2 output |
| Chân 30 | PWM3 — PWM channel 3 output |
| Chân 31 | PP0 — Port P bit 0 (PWM fault / ECLK) |
| Chân 32 | PP1 — Port P bit 1 |
| Chân 33 | PP2 — Port P bit 2 |
| Chân 34 | PP3 — Port P bit 3 |
| Chân 35 | PP4 — Port P bit 4 |
| Chân 36 | PP5 — Port P bit 5 |
| Chân 37 | PP6 — Port P bit 6 |
| Chân 38 | PP7 — Port P bit 7 |
| Chân 39 | VSS1 — Core ground |
| Chân 40 | VDD1 — Core supply (1.8 V regulated) |
| Chân 41 | PT0 — Port T bit 0 (IOC0 / ECT) |
| Chân 42 | PT1 — Port T bit 1 (IOC1 / ECT) |
| Chân 43 | PT2 — Port T bit 2 (IOC2 / ECT) |
| Chân 44 | PT3 — Port T bit 3 (IOC3 / ECT) |
| Chân 45 | PT4 — Port T bit 4 (IOC4 / ECT) |
| Chân 46 | PT5 — Port T bit 5 (IOC5 / ECT) |
| Chân 47 | PT6 — Port T bit 6 (IOC6 / ECT) |
| Chân 48 | PT7 — Port T bit 7 (IOC7 / ECT) |
| Chân 49 | PJ0 — Port J bit 0 (CAN0 TX) |
| Chân 50 | PJ1 — Port J bit 1 (CAN0 RX) |
| Chân 51 | PJ2 — Port J bit 2 (CAN1 TX) |
| Chân 52 | PJ3 — Port J bit 3 (CAN1 RX) |
| Chân 53 | PJ4 — Port J bit 4 |
| Chân 54 | PJ5 — Port J bit 5 |
| Chân 55 | PJ6 — Port J bit 6 |
| Chân 56 | PJ7 — Port J bit 7 |
| Chân 57 | PK0 — Port K bit 0 (SCI0 TX) |
| Chân 58 | PK1 — Port K bit 1 (SCI0 RX) |
| Chân 59 | PK2 — Port K bit 2 (SCI1 TX) |
| Chân 60 | PK3 — Port K bit 3 (SCI1 RX) |
| Chân 61 | PK4 — Port K bit 4 |
| Chân 62 | PK5 — Port K bit 5 |
| Chân 63 | PK6 — Port K bit 6 |
| Chân 64 | PK7 — Port K bit 7 |
| Chân 65 | PS0 — Port S bit 0 (SPI0 SCK) |
| Chân 66 | PS1 — Port S bit 1 (SPI0 MOSI) |
| Chân 67 | PS2 — Port S bit 2 (SPI0 MISO) |
| Chân 68 | PS3 — Port S bit 3 (SPI0 SS) |
| Chân 69 | PS4 — Port S bit 4 (SPI1 SCK) |
| Chân 70 | PS5 — Port S bit 5 (SPI1 MOSI) |
| Chân 71 | PS6 — Port S bit 6 (SPI1 MISO) |
| Chân 72 | PS7 — Port S bit 7 (SPI1 SS) |
| Chân 73 | PM0 — Port M bit 0 (I2C SDA) |
| Chân 74 | PM1 — Port M bit 1 (I2C SCL) |
| Chân 75 | PM2 — Port M bit 2 |
| Chân 76 | PM3 — Port M bit 3 |
| Chân 77 | PM4 — Port M bit 4 |
| Chân 78 | PM5 — Port M bit 5 |
| Chân 79 | PM6 — Port M bit 6 |
| Chân 80 | PM7 — Port M bit 7 |
| Chân 81 | PN0 — Port N bit 0 |
| Chân 82 | PN1 — Port N bit 1 |
| Chân 83 | PN2 — Port N bit 2 |
| Chân 84 | PN3 — Port N bit 3 |
| Chân 85 | PN4 — Port N bit 4 |
| Chân 86 | PN5 — Port N bit 5 |
| Chân 87 | PN6 — Port N bit 6 |
| Chân 88 | PN7 — Port N bit 7 |
| Chân 89 | PE0 — Port E bit 0 (XGATE / IRQ) |
| Chân 90 | PE1 — Port E bit 1 (XGATE / IRQ) |
| Chân 91 | PE2 — Port E bit 2 |
| Chân 92 | PE3 — Port E bit 3 |
| Chân 93 | PE4 — Port E bit 4 |
| Chân 94 | PE5 — Port E bit 5 |
| Chân 95 | PE6 — Port E bit 6 |
| Chân 96 | PE7 — Port E bit 7 |
| Chân 97 | PH0 — Port H bit 0 (SPI / GPIO) |
| Chân 98 | PH1 — Port H bit 1 (SPI / GPIO) |
| Chân 99 | PH2 — Port H bit 2 (SPI / GPIO) |
| Chân 100 | PH3 — Port H bit 3 (SPI / GPIO) |
| Chân 101 | PH4 — Port H bit 4 |
| Chân 102 | PH5 — Port H bit 5 |
| Chân 103 | PH6 — Port H bit 6 |
| Chân 104 | PH7 — Port H bit 7 |
| Chân 105 | VDDX3 — External supply (I/O segment 3) |
| Chân 106 | VSSX3 — Ground (I/O segment 3) |
| Chân 107 | VDD2 — Core supply (1.8 V regulated) |
| Chân 108 | VSS2 — Core ground |
| Chân 109 | EXTAL — External clock / crystal input |
| Chân 110 | XTAL — Crystal feedback output |
| Chân 111 | ECLK — System clock output |
| Chân 112 | BKGD — Background / debug interface (BDM) |
Ứng dụng tiêu biểu
S912XET512J3VALR phù hợp cho 6 Áp dụngs: Automotive Body Control Module (BCM), Instrument Cluster Controller, HVAC Control Module, Steering Angle Sensor Module, CAN/LIN Gateway Node, Industrial CAN-Node Controller.
Automotive Body Control Module (BCM)
The S912XET512J3VALR's 512 KB Flash, dual CAN 2.0A/B controllers, and AEC-Q100 qualification make it ideal for body control modules that manage lighting, door locks, wipers, and accessory relays. The S12X core's deterministic interrupt handling and the XGATE co-processor's 100 MHz operation enable simultaneous processing of CAN message reception, PWM-driven lamp dimming, and debounced switch inputs. At 50 MHz bus speed the MCU can service all body-domain messages with margin for OSEK/AUTOSAR-compliant scheduling. Designers place a TJA1042 CAN transceiver within 50 mm of the MCU's CAN pins, use 4.7 uF + 100 nF decoupling on each VDD pin, and route the 4 MHz crystal with short traces to minimize EMI. The 112-LQFP footprint supports standard PCM reflow processes and the automotive -40C to +105C temperature range.
Được đề xuất
Instrument Cluster Controller
Instrument clusters require real-time drive of stepper-motor gauges, LCD segments, and CAN message exchange with the vehicle network - all of which the S912XET512J3VALR handles on a single chip. The 12-bit ADC with 3 us conversion time reads fuel-level and temperature sensor signals at >100 kHz aggregate sample rate, while the ECT and PWM channels drive up to 4 gauge stepper motors at 20 kHz PWM frequency. The 512 KB Flash accommodates full gauge graphics libraries plus diagnostic UDS stacks; the XGATE offloads CAN RX interrupts off the main CPU so gauge animation remains smooth under network load. The AEC-Q100 + -40C to +105C qualification meets OEM cluster durability requirements. Place 10 uF bulk + 100 nF ceramic on the MCU's VDD pins and use a low-ESR 4.7 uF cap on the internal regulator output.
Được đề xuất
HVAC Control Module
HVAC modules need reliable CAN/LIN communication, multi-channel PWM blower/fan control, ADC sampling of cabin sensors, and reliable operation across automotive temperature swings - a profile the S912XET512J3VALR is designed for. The S12X core runs the HVAC control algorithm (PID for temperature regulation, model-based defrost logic) while XGATE handles PWM updates and CAN diagnostics in parallel. The 12-bit ADC provides accurate cabin-temperature and humidity-sensor acquisition; the ECT provides timing for blower ramp-up profiles. The 512 KB Flash supports ISO 14229 UDS diagnostics, AUTOSAR-compliant BSW, and OEM-specific calibration data. AEC-Q100 qualification plus -40C to +105C operation covers under-dash thermal stress. Designers typically route CAN traces as a differential pair with 120 ohm characteristic impedance.
Được đề xuất
Steering Angle Sensor Module
Steering angle sensors demand high-resolution ADC sampling, deterministic interrupt latency for safety-critical position reporting, and long-term reliability across automotive temperature ranges. The S912XET512J3VALR's 12-bit ADC samples redundant optical or Hall-effect position encoders at >1 kHz, while the S12X CPU computes the steering angle with averaging and outputs it on CAN at 100 Hz for EPS and ADAS systems. The XGATE co-processor services the CAN TX interrupt within 1 us, ensuring message jitter stays within EPS-system requirements. The Memory Protection Unit enables ISO 26262 ASIL-B compatible software partitioning between safety-relevant angle calculation and non-safety diagnostic code. The 112-LQFP footprint fits inside the small sensor housing on the steering column.
Được đề xuất
CAN/LIN Gateway Node
In automotive zonal architectures, gateway modules bridge between high-speed CAN, low-speed CAN, and LIN sub-networks. The S912XET512J3VALR's dual CAN 2.0A/B controllers plus available SCI for LIN-master operation allow it to function as a compact 3-bus gateway without an external hub IC. The 512 KB Flash accommodates full UDS routing tables and network management, while XGATE handles CAN RX filtering at 1 Mbaud without CPU intervention. The S12X CPU runs the routing logic and NM state machine, with RAM sized for typical message queue buffers. AEC-Q100 + -40C to +105C qualification supports body-control and chassis gateway placements. Use isolated CAN transceivers (TJA1052i) when bridging 12V body CAN to 24V chassis CAN domains.
Được đề xuất
Industrial CAN-Node Controller
Beyond automotive, the S912XET512J3VALR is well-suited for industrial CANopen or DeviceNet nodes where long-term availability and robust CAN connectivity matter more than processing horsepower. The S12X core runs CANopen stack (CiA 401/402/404) while XGATE handles SYNC message distribution and PDO multiplexing. The 12-bit ADC reads 4-20 mA industrial sensor signals, and the ECT provides timing for pulse-counting flow sensors. AEC-Q100 qualification - although originally automotive - delivers enhanced reliability for industrial -40C to +105C environments. The 512 KB Flash accommodates full CANopen device-profile libraries plus application firmware. Pair with an isolated CAN transceiver for 24V industrial bus operation and use a watchdog timer (enabled via COP module) for unattended node deployments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho S912XET512J3VALR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | S912XET512J3MAGR | S912XET512J2VAGR | S912XET512BMAGR | S912XEG384J2VAL | S9S12XF384J2MLMR |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20 mm) | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same |
| Flash Memory | 512 KB | 512 KB | 256 KB (-50%) | 512 KB | 384 KB (-25%) | 384 KB (-25%) |
| CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Operating Temperature | -40C to +105C (Automotive) | -40C to +105C | -40C to +105C | -40C to +85C (Industrial) | -40C to +105C | -40C to +105C |
| AEC-Q100 Qualified | Yes (Automotive Grade) | Yes | Yes | No (Industrial grade) | Yes | Yes |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes | Yes |
| CAN 2.0A/B Controllers | 2 | 2 | 2 | 2 | 2 | 2 |
| ADC | 12-bit, 3 us | 12-bit, 3 us | 12-bit, 3 us | 12-bit, 3 us | 12-bit, 3 us | 12-bit, 3 us |
| Approx. Unit Price (qty 100) | $9.85 | $9.85 | $8.20 | $7.95 | $8.50 | $8.40 |
Bảo phân biệt quan trọng
- Dual-core S12X + XGATE architecture (vsMC9S12XEQ384CAG)
- 512 KB Flash with full AEC-Q100 automotive qualification (vsS912XET512BMAGR)
- Long-life automotive supply continuity (vsGeneric S12X competitor offerings)
Ghi chú thiết kế
Place a 4.7 uF bulk decoupling capacitor and a 100 nF ceramic capacitor within 5 mm of each VDD/VDDX/VSS pair on the S912XET512J3VALR. The internal voltage regulator supplies the 1.8V core from a 5V input; add a 10 uF low-ESR tantalum or ceramic on the VDDR pin to handle inrush during power-up. For automotive load-dump compliance, follow the 5V supply with a TVS diode (e.g., SMAJ5.0A) and input filter per NXP AN2400. Current draw is approximately 80 mA active at 50 MHz and under 1 mA in STOP mode with RTI running.
Route the EXTAL/XTAL crystal traces with short, symmetric paths to minimize parasitic capacitance; typical crystal load capacitance is 12-22 pF, so use traces under 4 mm and place load capacitors as close to the MCU pins as possible. For CAN bus signals, route as a 120 ohm differential pair with continuous ground reference and avoid crossing noisy signals. Place the BDM (Background Debug Mode) connector at the board edge with a 2x5 0.05" header so that firmware updates and debug sessions are accessible without disassembly. Maintain a continuous ground plane on layer 2 directly beneath the MCU footprint for thermal dissipation and EMI shielding.
The TEST pin (pin 7) MUST be tied directly to VSS for normal MCU operation; leaving it floating or pulling it high forces the device into factory test mode and prevents application code execution. The MODC pin must be tied to VSS for single-chip mode or to VDD for expanded mode - verify by sample before PCB fabrication. When migrating firmware between S912XET512J3VALR and S912XET512J2VAGR (256 KB Flash variant), recompile with the correct Flash linker script to avoid over-writing Flash regions that exist only on the 512 KB part. Always enable the COP watchdog in production firmware to recover from motor or transient-induced lockups.
Estimated: at 50 MHz CPU, 5V supply, and full peripheral activity, the S912XET512J3VALR consumes roughly 80 mA * 5V = 0.4 W. The 112-LQFP package has theta_JA of approximately 45 C/W on a 4-layer JEDEC test board, producing a junction-to-ambient delta of 18 C - no external heatsink required. In enclosed under-dash enclosures with ambient up to 85C, the junction remains comfortably below the 150C shutdown threshold with no special thermal mitigation beyond standard PCB copper pour. For sealed engine-bay applications with ambient up to 105C, ensure a 1 sq-in copper pour under the package is present to keep junction below 125C.
Thông tin tuân thủ
AEC-Q100 qualified automotive grade per NXP S12XET512 datasheet. RoHS and REACH compliant per NXP product page. Lead-free and halogen-free per NXP packaging materials declaration. Conflict-minerals compliant per NXP CMRT filing.
