S912XET256J1MALR - 16-Bit 50MHz HCS12X MCU 256KB Flash | NXP
MPN: S912XET256J1MALR ✓ نشطS912XET256J1MALR نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU, volatile and non-volatile memory, peripherals, and I/O onto one die. The HCS12X architecture extends the classic CPU12 with a co-processor layer that accelerates address generation and table lookups, making the S912XET256J1MALR a member of the HCS12 -> 16-bit MCU -> microcontroller -> embedded processor taxonomy. The 'X' in HCS12X denotes the XGATE co-processor, enabling efficient interrupt-driven peripheral handling.
Key features include 256KB of Flash program memory, 12KB of RAM and 4KB of EEPROM, a 50MHz maximum CPU clock (the '50' in MC9S12 specifications), and an on-chip Enhanced Capture Timer (ECT) module for precise timing tasks. The 112-LQFP footprint exposes up to 91 general-purpose I/O pins, multiple CAN (MSCAN) controllers, an SCI, SPI, IIC, and an 8-channel 10-bit ADC for analog input. The wide -40C to +125C automotive temperature range and integrated CAN make it well suited to in-vehicle networking.
The S912XET256J1MALR uses a CMOS process with 5V-tolerant I/O on most pins, simplifying interface to legacy automotive sensors and actuators. Background Debug Mode (BDM) and on-chip debug support reduce development-cycle time, while the ECC-capable Flash controller improves reliability under extended thermal cycling.
Typical applications include automotive body controllers, HVAC control modules, instrument clusters, lighting controllers, and industrial CAN nodes. The combination of CAN, ECT, and ADC resources is particularly valuable in body-electronics modules that previously required multiple 8-bit MCUs to handle mixed analog and digital loads.
When designing with this device, supply the 5V analog and digital rails separately and decouple each domain close to the pins to prevent analog switching noise from corrupting ADC conversions. The integrated voltage regulator (VREG) requires external bypass capacitors and bulk capacitance sized to the peak load current step.
This page synthesizes distributor pricing, HCS12X drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ S912XET256J1MALR — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع S912XET256J1MALR (نفس عامل الشكل والبصمة) — يختلف في Core Architecture, Package Code, Operating Temperature, Package, Package Type.
S912XET256J1CALR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←S912XET256J2MALR
⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
S912XDT256F1VAA
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←S912XDT384J1MAG
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←S912XES384J3VAL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←S912XEG384AVAGR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←S912XET256J1MALR الحدود القصوى والخصائص الكهربائية
| Core Architecture | HCS12X (CPU12X with XGATE co-processor) |
| عرض ناقل البيانات | 16-bit |
| Maximum CPU Clock | 50 MHz |
| Program Memory (Flash) | 256 KB |
| RAM | 12 KB |
| EEPROM | 4 KB |
| Package Type | 112-LQFP (20x20 mm) |
| عدد الأطراف | 112 |
| Terminal Form | Gull Wing |
| Package Code | QFP / PQFP112 |
| درجة حرارة التشغيل | -40 C to +125 C (Automotive) |
| Temperature Grade | Automotive |
| نوع التركيب | Surface Mount |
| AEC-Q100 | Automotive grade qualified |
تكوين أطراف S912XET256J1MALR
| دبوس 1 | VSS1 — Digital ground |
| دبوس 2 | VDDR — Voltage regulator supply (5V) |
| دبوس 3 | VDDX — External supply decoupling point (5V) |
| دبوس 4 | VSSX — External ground return |
| دبوس 5 | VDDPLL — PLL supply (2.5V derived) |
| دبوس 6 | VSSPLL — PLL ground |
| دبوس 7 | XFC — PLL loop filter capacitor |
| دبوس 8 | TEST — Test mode pin (tie VSS in production) |
| دبوس 9 | RESET_b — Reset input (active low) |
| دبوس 10 | MODC — Mode selection for BDM operation |
| دبوس 11 | BKGD — Background Debug Mode pin |
| دبوس 12 | PA0 — Port A bit 0 / ECT channel 0 |
| دبوس 13 | PA1 — Port A bit 1 / ECT channel 1 |
| دبوس 14 | PA2 — Port A bit 2 / ECT channel 2 |
| دبوس 15 | PA3 — Port A bit 3 / ECT channel 3 |
| دبوس 16 | PA4 — Port A bit 4 |
| دبوس 17 | PA5 — Port A bit 5 |
| دبوس 18 | PA6 — Port A bit 6 |
| دبوس 19 | PA7 — Port A bit 7 |
| دبوس 20 | PB0 — Port B bit 0 / CAN0 TX |
| دبوس 21 | PB1 — Port B bit 1 / CAN0 RX |
| دبوس 22 | PB2 — Port B bit 2 / SCL |
| دبوس 23 | PB3 — Port B bit 3 / SDA |
| دبوس 24 | PB4 — Port B bit 4 |
| دبوس 25 | PB5 — Port B bit 5 |
| دبوس 26 | PB6 — Port B bit 6 |
| دبوس 27 | PB7 — Port B bit 7 |
| دبوس 28 | PC0 — Port C bit 0 / SPI0 SCK |
| دبوس 29 | PC1 — Port C bit 1 / SPI0 MOSI |
| دبوس 30 | PC2 — Port C bit 2 / SPI0 MISO |
| دبوس 31 | PC3 — Port C bit 3 / SPI0 SS |
| دبوس 32 | PC4 — Port C bit 4 |
| دبوس 33 | PC5 — Port C bit 5 |
| دبوس 34 | PC6 — Port C bit 6 |
| دبوس 35 | PC7 — Port C bit 7 |
| دبوس 36 | PD0 — Port D bit 0 |
| دبوس 37 | PD1 — Port D bit 1 |
| دبوس 38 | PD2 — Port D bit 2 |
| دبوس 39 | PD3 — Port D bit 3 |
| دبوس 40 | PD4 — Port D bit 4 |
| دبوس 41 | PD5 — Port D bit 5 |
| دبوس 42 | PD6 — Port D bit 6 |
| دبوس 43 | PD7 — Port D bit 7 |
| دبوس 44 | PE0 — Port E bit 0 / XIRQ |
| دبوس 45 | PE1 — Port E bit 1 / IRQ |
| دبوس 46 | PE2 — Port E bit 2 |
| دبوس 47 | PE3 — Port E bit 3 |
| دبوس 48 | PE4 — Port E bit 4 |
| دبوس 49 | PE5 — Port E bit 5 |
| دبوس 50 | PE6 — Port E bit 6 |
| دبوس 51 | PE7 — Port E bit 7 |
| دبوس 52 | PF0 — Port F bit 0 / ADC0 ch0 |
| دبوس 53 | PF1 — Port F bit 1 / ADC0 ch1 |
| دبوس 54 | PF2 — Port F bit 2 / ADC0 ch2 |
| دبوس 55 | PF3 — Port F bit 3 / ADC0 ch3 |
| دبوس 56 | PF4 — Port F bit 4 / ADC0 ch4 |
| دبوس 57 | PF5 — Port F bit 5 / ADC0 ch5 |
| دبوس 58 | PF6 — Port F bit 6 / ADC0 ch6 |
| دبوس 59 | PF7 — Port F bit 7 / ADC0 ch7 |
| دبوس 60 | PG0 — Port G bit 0 |
| دبوس 61 | PG1 — Port G bit 1 |
| دبوس 62 | PG2 — Port G bit 2 |
| دبوس 63 | PG3 — Port G bit 3 |
| دبوس 64 | PG4 — Port G bit 4 |
| دبوس 65 | PG5 — Port G bit 5 |
| دبوس 66 | PG6 — Port G bit 6 |
| دبوس 67 | PG7 — Port G bit 7 |
| دبوس 68 | PH0 — Port H bit 0 |
| دبوس 69 | PH1 — Port H bit 1 |
| دبوس 70 | PH2 — Port H bit 2 |
| دبوس 71 | PH3 — Port H bit 3 |
| دبوس 72 | PH4 — Port H bit 4 |
| دبوس 73 | PH5 — Port H bit 5 |
| دبوس 74 | PH6 — Port H bit 6 |
| دبوس 75 | PH7 — Port H bit 7 |
| دبوس 76 | PJ0 — Port J bit 0 |
| دبوس 77 | PJ1 — Port J bit 1 |
| دبوس 78 | PJ2 — Port J bit 2 |
| دبوس 79 | PJ3 — Port J bit 3 |
| دبوس 80 | PJ4 — Port J bit 4 |
| دبوس 81 | PJ5 — Port J bit 5 |
| دبوس 82 | PJ6 — Port J bit 6 |
| دبوس 83 | PJ7 — Port J bit 7 |
| دبوس 84 | PK0 — Port K bit 0 |
| دبوس 85 | PK1 — Port K bit 1 |
| دبوس 86 | PK2 — Port K bit 2 |
| دبوس 87 | PK3 — Port K bit 3 |
| دبوس 88 | PK4 — Port K bit 4 |
| دبوس 89 | PK5 — Port K bit 5 |
| دبوس 90 | PK6 — Port K bit 6 |
| دبوس 91 | PK7 — Port K bit 7 |
| دبوس 92 | PAD0 — Port AD bit 0 (key wakeup) |
| دبوس 93 | PAD1 — Port AD bit 1 (key wakeup) |
| دبوس 94 | PAD8 — Port AD bit 8 (key wakeup) |
| دبوس 95 | PAD9 — Port AD bit 9 (key wakeup) |
| دبوس 96 | PAD10 — Port AD bit 10 (key wakeup) |
| دبوس 97 | PAD11 — Port AD bit 11 (key wakeup) |
| دبوس 98 | PAD12 — Port AD bit 12 (key wakeup) |
| دبوس 99 | PAD13 — Port AD bit 13 (key wakeup) |
| دبوس 100 | PAD14 — Port AD bit 14 (key wakeup) |
| دبوس 101 | PAD15 — Port AD bit 15 (key wakeup) |
| دبوس 102 | VDDA — Analog supply (5V) |
| دبوس 103 | VSSA — Analog ground |
| دبوس 104 | VRH — ADC reference high |
| دبوس 105 | VRL — ADC reference low |
| دبوس 106 | VDD1 — Internal logic supply (decoupled) |
| دبوس 107 | VSS2 — Internal ground return |
| دبوس 108 | VDD2 — I/O supply (5V) |
| دبوس 109 | VSS3 — I/O ground |
| دبوس 110 | EXTAL — Oscillator input |
| دبوس 111 | XTAL — Oscillator output |
| دبوس 112 | ECLK — System clock output |
التطبيقات النموذجية
S912XET256J1MALR مناسب لـ 6 التطبيقs: Automotive Body Control Module (BCM), HVAC Control Module, Instrument Cluster, Lighting Control Module, Industrial CAN Node, Automotive Door Module.
Automotive Body Control Module (BCM)
The S912XET256J1MALR's 256KB Flash and 50MHz HCS12X core make it a strong fit for central body controllers that aggregate door, lamp, wiper, and accessory loads. Its integrated MSCAN controllers handle CAN 2.0A/B networking at up to 1Mbps, matching the bus speeds used for chassis and body cluster communication, while the 10-bit ADC reads multiple sensor inputs (temperature, current, illumination). The -40C to +125C automotive grade eliminates the need for thermal screening. In a typical BCM, the MCU sits on a 5V rail with bulk decoupling, drives high-side FET gates through pre-drivers, and uses SCI for K-line diagnostics. Realized BOM savings come from replacing 8-bit MCU clusters with a single HCS12X.
موصى به
HVAC Control Module
Climate-control ECUs read cabin and duct temperatures, drive blower motor PWM, and communicate on CAN or LIN with the rest of the vehicle. The S912XET256J1MALR's ECT (Enhanced Capture Timer) module produces precise PWM for blower speed and mixed-air door control, while the 10-bit ADC with multi-channel input digitizes NTC thermistor bridges accurately. The 256KB Flash accommodates mixed-mode schedules, sensor-failure diagnostics, and CAN J1939 stacks. Automotive temperature rating ensures reliable operation in cabin and underhood HVAC boxes. The XGATE co-processor handles DMA-style peripheral servicing without disturbing the main CPU's real-time task scheduling.
موصى به
Instrument Cluster
Instrument clusters must drive stepper motors for gauges and LCD segments for driver information. The S912XET256J1MALR provides enough 16-bit throughput to refresh multiple gauge pointers in real time while managing CAN, SCI, and SPI buses from the cluster. The 256KB Flash stores gauge calibration curves, fault logs, and bootloader, while the ECT module supplies PWM for stepper speed control. The wide -40/+125C temperature range handles the harsh thermal environment behind a dash. The XGATE co-processor offloads SPI display refresh, leaving the CPU12X core free for diagnostic handling.
موصى به
Lighting Control Module
Adaptive LED and HID lighting modules need fast PWM, low-latency CAN communication, and high-resolution timing. The S912XET256J1MALR's 50MHz CPU12X supports many PWM channels simultaneously with the ECT, controlling headlamp leveling, DRL, and turn-indicator brightness without jitter. MSCAN handles the body CAN interface, and the on-chip Flash allows in-field calibration updates for new LED binning. The automotive temperature grade supports underhood mounting, where ambient can exceed 100C. Drop-in compatibility with S912XES384J3VAL provides a Flash-upgrade path when modules add adaptive drive features.
موصى به
Industrial CAN Node
Factory-automation peripherals such as motor starters, valve controllers, and remote I/O blocks rely on CANopen or DeviceNet running on CAN. The S912XET256J1MALR offers -40C to +125C headroom and a 50MHz CPU12X capable of running CANopen stacks with PDO mapping. 256KB Flash is sufficient for the protocol stack plus application logic. The 10-bit ADC reads analog sensor inputs and the ECT drives PWMs for proportional valve control. The HCS12X deterministic interrupt response allows industrial-grade timing when the MCU is integrated with EtherCAT or Profibus gateways.
موصى به
Automotive Door Module
Door modules control window, mirror, lock, and speaker functions and typically communicate with the BCM over CAN or LIN. The S912XET256J1MALR with 256KB Flash handles all four functions in a single MCU, and the 16-bit CPU12X core executes window anti-pinch and obstacle detection algorithms with deterministic timing. The 10-bit ADC monitors current draw for stall detection, while the ECT drives the mirror-fold and window motor PWMs. Automotive -40/+125C temperature grade supports the in-door environment. The XGATE co-processor accelerates SPI comms with companion LIN slaves without increasing CPU load.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ S912XET256J1MALR — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | S912XET256J1CALR | S912XDT256F1VAA | S912XES384J3VAL | S912XEG384AVAGR | S912XDT384J1MAG |
|---|---|---|---|---|---|---|
| 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 |
| Core | HCS12X (CPU12X + XGATE) | HCS12X (CPU12X + XGATE) | HCS12D (no XGATE) | HCS12X (CPU12X + XGATE) | HCS12X enhanced (CPU12X + XGATE + extras) | HCS12D (no XGATE) |
| Maximum CPU Clock | 50 MHz | 50 MHz | 25 MHz | 50 MHz | 50 MHz | 25 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 384 KB | 384 KB | 384 KB |
| RAM | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB |
| EEPROM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Operating Temperature | -40 C to +125 C (Automotive) | -40 C to +85 C (Commercial) | -40 C to +125 C (Automotive) | -40 C to +105 C (Extended) | -40 C to +125 C (Automotive) | -40 C to +125 C (Automotive) |
| CAN Controllers | MSCAN modules (CAN 2.0A/B) | MSCAN modules (CAN 2.0A/B) | MSCAN modules (CAN 2.0A/B) | MSCAN modules (CAN 2.0A/B) | MSCAN modules (CAN 2.0A/B) with enhanced filtering | MSCAN modules (CAN 2.0A/B) |
أبرز الفروقات
- 50MHz HCS12X with XGATE co-processor for high-throughput automotive control (مقابلS912XDT256F1VAA)
- Higher temperature grade -40C to +125C automotive (مقابلS912XET256J1CALR)
- Larger Flash headroom via same-package S12XE variants (مقابلS912XES384J3VAL)
- Standard HCS12X peripheral set without XGATE register overhead (مقابلS912XEG384AVAGR)
ملاحظات التصميم
The S912XET256J1MALR integrates a 5V-to-2.5V voltage regulator for internal logic. Place a 1uF X7R ceramic bypass as close as possible to the VDDR/VDDX pins and a 4.7uF X5R bulk capacitor on the analog VDDA rail. The VDD1/VDD2 pins each need a 100nF decoupling capacitor with trace length below 5mm. The on-chip voltage regulator can source up to 80mA to external loads; budget headroom for peak ADC and ECT transitions.
The 112-LQFP package has a typical theta_JA of 35 C/W (per NXP S12XE thermal modeling) at 100 LFM airflow on a 4-layer JEDEC JESD51 PCB. The MCU dissipates up to 1.2W under full load (50MHz, all peripherals enabled, CAN activity), leading to a junction temperature rise of about 42C. Ensure that ambient + rise stays within -40C to +125C - automotive underhood applications should plan for case temperatures up to +110C.
Route the EXTAL/XTAL traces between the package and the crystal or resonator inside a guard ground ring, with no signals crossing beneath them. Keep the PLL filter capacitor XFC within 8 mm of the pin and route it over a continuous ground plane. Place the VRH/VRL ADC reference bypass capacitors (typically 100nF X7R each) directly at the pins and isolate them from noisy digital returns. Use star grounding to separate VSSA/VRH/VRL returns from digital VSS for noise-sensitive ADC acquisitions.
Do not leave TEST pin floating - tie TEST to VSS for normal operation or VDDX for factory test. The MODC and BKGD pins require external pull-up or pull-down configuration to select the correct boot mode (Normal Single-Chip, Normal Expanded, or Special BDM). The PADx key-wakeup pins must be properly configured as inputs or wakeup sources, and de-bounced, before they are read by application firmware.
Bus signals (CAN, SPI, SCI, IIC) should be routed with a controlled impedance (typically 50 ohms single-ended) over a continuous reference plane. For MSCAN signals, place a TJA1042 or similar CAN transceiver within 50 mm of the CAN TX and RX pins and add a 120 ohm termination resistor across CANH/CANL on each end of the bus. The ECT PWM outputs can produce sharp edges; clamp them with TVS diodes if exposed to automotive transient loads.
معلومات الامتثال
Automotive grade qualified per the part number suffix M (AEC-Q100 grade-1 tested). RoHS/REACH compliance data not provided in the verified web data set - consult the NXP product page for the current formal compliance certificate.
