S912XEQ384J2MAA - 384KB Flash 16-bit MCU 50MHz | NXP | Automotive
部品番号: S912XEQ384J2MAA ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.75 | $167.50 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $10.95 | $10,950.00 |
S912XEQ384J2MAA 概要
A microcontroller (MCU) is an integrated circuit that combines a processor core, memory (Flash, RAM, EEPROM), and multiple peripherals onto a single silicon die. The S912X family specifically targets automotive body and chassis applications with a 16-bit accumulator-based CPU, peripheral co-processor (XGATE) for interrupt-driven I/O, and on-chip CAN/LIN/SPI/SCI interfaces. Within the broader taxonomy, the S12XE fits the hierarchy: 16-bit MCU -> 8/16/32-bit microcontroller class -> embedded processor -> semiconductor. Compared with 32-bit ARM Cortex-M parts the S12XE offers deterministic interrupt latency and a mature automotive software ecosystem.
Key feature points include 384KB Flash, 32KB RAM, 4KB EEPROM, a 50MHz enhanced HCS12X core, an XGATE peripheral co-processor, up to 63 general-purpose I/O, dual 12-bit ADC, four CAN 2.0 controllers, two SCI, SPI and IIC buses, and an integrated enhanced capture timer. Hardware security includes Flash protection and a watchdog. The QFP-80 (14x14 mm, 0.65 mm pitch) body provides a thermal pad and gull-wing leads suited for hand and reflow soldering on automotive PCBs.
From an architectural standpoint, the S12XE core pairs an enhanced S12 CPU with the XGATE peripheral co-processor, allowing high-bandwidth interrupt and message-routing tasks to be offloaded from the main core. This two-core arrangement is distinctive within the 16-bit MCU class and was tuned for CAN-driven automotive networks where deterministic response time matters more than raw CPU throughput. The 50MHz bus clock yields 50ns instruction-cycle granularity for tight real-time loops.
Typical applications include automotive body controllers, HVAC modules, instrument clusters, LIN/CAN nodes, and seat/window/lighting modules. The wide operating temperature range and CAN 2.0 controllers suit chassis and body-domain networks where multiple ECUs exchange real-time messages over a shared bus.
When designing with this part, allocate sufficient decoupling on AVDD/VSS and place the 4MHz external resonator within 1cm of EXTAL/XTAL to avoid clock jitter. Ensure unused I/O are configured as outputs to lower current draw, and verify programming-voltage sequencing against the BGND/debug-entry procedure documented in the S12XE reference manual.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in a quick scan of the manufacturer PDF.
ドロップイン代替品: S912XEQ384J2MAA — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: S912XEQ384J2MAA （同一形状・フットプリント） — 相違点: Core Architecture, Package, Core Processor, Core Size, EEPROM.
クイック比較ツール — 並列比較する代替部品を選択:
S912XEQ384BMAA
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MC9S12XEQ384CAG
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →S912XET512J2VAGR
✅ ドロップイン✓ 在庫あり
$1 / 個
データシートを見る →MCF51JE128VLK
✅ ドロップイン✓ 在庫あり
$6.95 / 個
データシートを見る →S912XEQ384J2MAA 最大定格＆電気的特性
| Core Architecture | S12XE (HCS12X family) |
| データバス幅 | 16-bit |
| 最大クロック周波数 | 50 MHz |
| Program Memory (Flash) | 384 KB |
| RAM | 32 KB |
| EEPROM | 4 KB |
| Package Type | 80-QFP (QFP-80, 14x14 mm, 0.65 mm pitch) |
| Number of Terminals | 80 |
| Terminal Form | GULL WING |
| Package Shape | SQUARE (QFP) |
| 実装タイプ | Surface Mount |
| Temperature Grade | AUTOMOTIVE (-40C to +125C) |
| CAN 2.0 Controllers | 4 (msCAN) |
| ADC | 12-bit |
| 動作温度範囲 | -40C to +125C |
S912XEQ384J2MAA square (qfp) ピン配置ガイド
S912XEQ384J2MAA (square (qfp) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: S912XEQ384J2MAA.
詳細は データシート をご参照ください。
主な用途
S912XEQ384J2MAA の用途: 6 件s: Automotive Body Control Module, Automotive HVAC Control Unit, CAN Gateway ECU, Automotive Lighting Controller, Industrial CAN Sensor Hub, Automotive Instrument Cluster.
Automotive Body Control Module
Body control modules integrate lighting, central locking, wiper, and mirror controls onto a single CAN/LIN-attached ECU. The S912XEQ384J2MAA fits this role because its 384KB Flash and 32KB RAM cover the largest S12XE-class body-control stacks, while its 4 msCAN 2.0 channels allow simultaneous gateway traffic between the body CAN, chassis CAN, and diagnostic CAN buses. The automotive -40C to +125C temperature grade ensures headroom in engine-bay and sun-exposed cabins. Compared with 32-bit Cortex-M parts the S12XE's XGATE co-processor delivers deterministic interrupt response for time-critical window-mirror and lighting messages without RTOS overhead, simplifying functional-safety conformance. Industry datasheet designs place the MCU on the QFP-80 footprint with a 4MHz ceramic resonator, six 100nF decoupling caps distributed around AVDD/VSS pairs, and an external CAN transceiver (e.g. TJA1042) on each CAN bus.
おすすめ
Automotive HVAC Control Unit
HVAC modules need exact PWM for blower fans, NTC thermistor sampling, and a CAN/LIN bus to the body controller. The S912XEQ384J2MAA's on-chip 12-bit ADC captures NTC temperature with 0.1C resolution per LSB, and the ECT (enhanced capture timer) generates mixed-frequency PWM for blower and mode-door actuators without consuming CPU cycles. Four msCAN controllers free one bus for the HVAC local node and a second for body-network gateway traffic. The automotive temperature grade spans the full cabin thermal swing including direct-sun load scenarios. Drop the part onto the QFP-80 footprint with 100nF ceramic bypass caps on every AVDD/VSS, an automotive-grade CAN transceiver, and a 4MHz external resonator. The XGATE co-processor handles the LIN/UART high-rate scheduler offload that traditionally overloads single-core S12 parts.
おすすめ
CAN Gateway ECU
CAN gateways bridge body, chassis, and powertrain CAN buses, routing messages between segments of different speeds. The S912XEQ384J2MAA fits this role with 384KB Flash for the AUTOSAR-compliant gateway stack and 4 msCAN 2.0 controllers that can host four independent bus segments simultaneously. The XGATE co-processor manages message filtering and the hardware scheduler, offloading repetitive CAN mailbox servicing from the main core and ensuring sub-millisecond forwarding latency. The 80-QFP package integrates cleanly onto a central gateway PCB along with high-speed CAN transceivers and a watchdog supervisor. Reference designs from NXP place the MCU in the centre of the board with the four CAN lines fanning to dual-row transceiver footprints; decoupling is concentrated around the AVDD/VSS pins.
おすすめ
Automotive Lighting Controller
Exterior lighting modules - headlights, tail lights, indicators, DRL - demand precise PWM dimming and CAN/LIN communication with the body controller. The S912XEQ384J2MAA generates multi-channel 16-bit PWM through the ECT for LED drivers and headlamp-leveling motors, while its 12-bit ADC reads photodiode feedback for adaptive headlight systems. The 384KB Flash supports OTA-friendly bootloader + dual-bank firmware commonly required by lighting ECUs. Drop the part onto the QFP-80 footprint with high-side LED drivers off-chip and place CAN/LIN transceivers at the PCB edge connectors. The XGATE offload keeps the main core free to handle CAN tick-bus and PWM update cycles at 200Hz without missing deadlines.
おすすめ
Industrial CAN Sensor Hub
Outside the automotive market the S12XE family is widely deployed in industrial CAN sensor hubs where 16-bit determinism and rugged temperature performance matter. The S912XEQ384J2MAA reads 12-bit ADC sensor data, manages four msCAN segments and forwards to a PLC or SCADA controller. The 80-QFP industrial-friendly outline mounts onto standard 0.65mm-pitch footprint PCBs common in factory-automation stations. Use the XGATE co-processor for time-critical CNC machine control loops and integrate the MCU with industrial-grade isolated CAN transceivers at the bus boundary. Decoupling follows the same 100nF-per-VDD rule as automotive designs and the -40C to +125C operating range supports cabinet and outdoor installations.
おすすめ
Automotive Instrument Cluster
Traditional and hybrid instrument clusters display speedometer, tachometer, fuel, and driver information on a stepper-motor-driven gauge assembly. The S912XEQ384J2MAA drives multiple stepper motors with ECT PWM and parallel-data LCDs through the external bus interface. Its 384KB Flash holds the cluster firmware plus LUTs for gauge calibration, while 32KB RAM offers frame buffer headroom. The four CAN bus interfaces connect to CAN-body, CAN-chassis, CAN-powertrain, and OBD-II diagnostics from a single QFP-80 footprint. Place the MCU near the LCD connector with 22 ohm CAN-bus termination resistors at the bus edges, and follow NXP's BDM debug interface for in-cluster firmware updates.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: S912XEQ384J2MAA — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | S912XEQ384BMAA | MC9S12XEQ384CAG | S912XET512J2VAGR | MCF51JE128VLK |
|---|---|---|---|---|---|
| Package | 80-QFP (14x14 mm, 0.65 mm pitch) | 80-QFP (14x14 mm) | 80-QFP equivalent | 80-QFP equivalent (VAGR) | LQFP-80 |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | 16-bit S12XE | 16-bit S12XE | 16-bit S12XE | 16-bit S12XE | 32-bit ColdFire V1 |
| Flash Memory | 384 KB | 384 KB | 384 KB | 512 KB | 128 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Maximum Clock Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| CAN 2.0 Controllers | 4 | 4 | 4 | 5 | 2 |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +105C | -40C to +125C |
| Approximate 1k-unit Price (USD) | $10.95 | approx. $11.20 | approx. $9.80 | approx. $13.50 | approx. $7.20 |
主な差別化要因
- Highest Flash density in the 80-pin QFP S12XE family （vs MC9S12XEQ384CAG)
- XGATE peripheral co-processor for deterministic interrupt offload （vs MCF51JE128VLK)
- More CAN 2.0 channels than typical 16-bit MCUs （vs S912XEG384J2VAL)
- Mature automotive software ecosystem （vs MCF51JE128VLK)
設計ノート
Place one 100nF decoupling capacitor on every AVDD/VSS pair within 5mm of the MCU pin. Add a 4.7uF bulk capacitor at the regulator output to ride through motor back-EMF transients. Keep MCU supply current under 100mA draw from VDD; the run current scales with clock frequency and peripheral use - estimated at 25-50mA typical at 50MHz across all four msCAN controllers active.
Route the 4MHz external resonator as a 1cm-short differential pair from EXTAL/XTAL to ground with a guarded via-fence. The CAN bus traces (CAN_H, CAN_L) must be 100-ohm differential with no stubs; route length to the CAN transceiver should not exceed 5cm to preserve signal integrity. Place the CAN termination resistor (120 ohm) at both ends of the bus, and use a CAN-bus protection diode near the connector.
Estimated: CAN signal quality can degrade if PCB traces are routed across noisy regulator switching regions. Suggested layout is to keep CAN_H and CAN_L within 0.1mm of the same length and spaced at 0.5mm to maintain 100-ohm differential impedance. Add TVS diodes on the CAN bus and use CAN bus ferrite beads if the ECU is mounted within 50mm of a switching power stage.
Do not skip programming the WDOG in the system startup - S12XE WDO/COP ensures lockup-free operation but must be configured with ECLK and COPCTL set to a refresh rate matched to your slowest task tick. Make sure unused I/O pins are configured as outputs with PULL enabled, otherwise the MCU draws tens of microamperes per floating pin during automotive EMC tests. The PLL clock control register should be modified only after EXTAL stabilises to avoid start-up jitter.
Estimated: at 1.8V VDD and 50MHz maximum clock with all four msCAN controllers operating, typical junction temperature rise is 15-20C above ambient for the QFP-80 package - well within automotive -40C to +125C envelope. For a worst-case environmental cabin test at +85C ambient, the junction will reach 100-105C under full load without active cooling. Ensure adequate copper pour around the QFP thermal pad to dissipate heat to the PCB.
コンプライアンス情報
Lead-free and halogen-free status not contained in the verified web data; refer to the manufacturer datasheet IPC1752 XML at the NXP part-information page for definitive compliance data. Conflict-mineral declaration compliant per NXP/Freescale standard.
