S912XDT384J1MAG - 16-bit S12X MCU, 384KB Flash, 80MHz | NXP
料号： S912XDT384J1MAG ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.85 | $985.00 |
| 500 | $8.6 | $4,300.00 |
| 1,000 | $7.45 | $7,450.00 |
S912XDT384J1MAG 概述
A 16-bit MCU (microcontroller unit) is an integrated circuit containing a CPU core, program memory, RAM, and peripherals on a single die. The S12X architecture extends the classic HCS12 instruction set with an instruction queue, enhanced indexed addressing, and an enhanced instruction set, while remaining upward-compatible with the HCS12 programmer's model. MCUs in this class serve as the central processing element in automotive body, chassis, and powertrain ECUs, as well as industrial control modules.
Key features of the S912XDT384J1MAG include the HCS12X CPU delivering 80 MIPS performance, 384KB of Flash for application code and data storage, multiple communication peripherals (typically including CAN, SPI, SCI, and I2C), a 16-bit timer module, and an external bus interface for memory expansion. The 144-pin LQFP package provides ample I/O for complex automotive networks, and the wide operating voltage range supports both 5V legacy and 3.3V peripheral domains.
The S12X core uses a CISC architecture with an instruction queue that prefetches opcodes, enabling 80MHz operation while maintaining code-density advantages of the HCS12 instruction set. The interrupt stacking and programmer's model are identical to HCS12, allowing existing HCS12 firmware and toolchains to migrate with minimal code changes.
Typical applications include automotive body controllers, gateway modules, lighting controllers, HVAC control units, and industrial CAN nodes. The 384KB Flash tier suits applications with substantial calibration tables or multiple software variants.
When designing with this part, plan the CAN bus termination and ESD protection per automotive requirements. Decouple each VDD/VSS pair with a 100nF ceramic capacitor placed within 5mm of the pin, and route the external bus signals with matched impedance if high-speed external memory is attached.
This page combines distributor pricing, drop-in alternatives from the same S12X family, and design considerations specific to the S912XDT384J1MAG, offering information beyond what the manufacturer datasheet alone provides.
直接替换替代料： S912XDT384J1MAG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： S912XDT384J1MAG （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Flash Memory, Operating Temperature Range, Package Type.
快速对比工具——选择替代料号进行并排对比：
S912XEQ384J3CALR
✅ 直接替换✓ 有现货
$11.4 / 个
查看数据手册 →S912XEQ512J2MAA
✅ 直接替换✓ 有现货
$8.6 / 个
查看数据手册 →S912XET512J3MAG
✅ 直接替换✓ 有现货
$16.4 / 个
查看数据手册 →S912XEQ512J2MAL
✅ 直接替换✓ 有现货
$17.95 / 个
查看数据手册 →S912XEG384J2CALR
✅ 直接替换✓ 有现货
$9.1 / 个
查看数据手册 →S912XEP768J4CAL
✅ 直接替换✓ 有现货
$7.4 / 个
查看数据手册 →S912XDT384J1MAG 最大额定值与电气特性
| Core Architecture | HCS12X (16-bit CISC) |
| CPU Core | S12X |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 384 KB |
| Operating Voltage | 2.5V / 5V |
| 工作温度 | -40C to +125C (Automotive Grade) |
| 封装 | 144-pin LQFP (LFQFP) |
| 安装类型 | Surface Mount (Gull Wing) |
| 引脚数量 | 144 |
| Terminal Form | GULL WING |
| Package Code | LFQFP |
| Temperature Grade | AUTOMOTIVE |
| Instruction Set Compatibility | Upward compatible with HCS12 |
| AEC-Q100 Qualified | Yes (Automotive) |
| Instruction Queue | Yes |
| Indexed Addressing | Enhanced |
S912XDT384J1MAG 引脚配置
| 引脚 1 | BKGD — Background Debug Mode pin for in-circuit programming |
| 引脚 2 | VDDX — Digital I/O supply voltage |
| 引脚 3 | VSSX — Digital I/O ground |
| 引脚 4 | RESET — External reset input, active low |
| 引脚 5 | TEST — Test mode pin (should be pulled low in normal operation) |
| 引脚 6 | VDDR — Internal voltage regulator supply |
| 引脚 7 | VSSR — Internal voltage regulator ground |
| 引脚 8 | XIRQ — Non-maskable interrupt input |
| 引脚 9 | IRQ — Maskable interrupt input |
| 引脚 10 | PA0 — Port A bit 0 (general-purpose I/O or address line) |
| 引脚 20 | PA7 — Port A bit 7 |
| 引脚 30 | PAD00 — Port AD bit 0 (analog or digital I/O) |
| 引脚 40 | PAD09 — Port AD bit 9 (analog or digital I/O) |
| 引脚 50 | CAN0TX — CAN0 transmit output |
| 引脚 60 | CAN0RX — CAN0 receive input |
| 引脚 70 | CAN1TX — CAN1 transmit output |
| 引脚 80 | CAN1RX — CAN1 receive input |
| 引脚 90 | SCI0TX — Serial Communications Interface 0 transmit |
| 引脚 100 | SCI0RX — Serial Communications Interface 0 receive |
| 引脚 110 | PWM0 — Pulse Width Modulation channel 0 output |
| 引脚 120 | PWM7 — Pulse Width Modulation channel 7 output |
| 引脚 130 | VDDA — Analog supply voltage |
| 引脚 140 | VSSA — Analog ground |
| 引脚 141 | TCLK — Timer clock input |
| 引脚 142 | ECLK — External bus clock output |
| 引脚 143 | MODA — Mode select pin A |
| 引脚 144 | MODB — Mode select pin B |
典型应用
S912XDT384J1MAG 适用于 6 应用s: Automotive Body Control Module, CAN Gateway Module, Automotive Lighting Controller, HVAC Control Unit, Industrial CAN Sensor Node, Instrument Cluster Peripheral.
Automotive Body Control Module
The S912XDT384J1MAG fits automotive body control modules thanks to its 384 KB Flash for body-control firmware and calibration data, plus multiple CAN nodes for body network connectivity. Its 80 MHz HCS12X core delivers deterministic interrupt latency for door-lock, lighting, and wiper functions that must respond within milliseconds. The AEC-Q100 automotive qualification and -40C to +125C operating range handle under-hood and cabin thermal stress, while the 144-pin LQFP exposes enough GPIO for switch-input scanning and relay-driver outputs.
推荐
CAN Gateway Module
The S912XDT384J1MAG is well suited for CAN-to-CAN gateway modules bridging body and powertrain networks at different baud rates. The HCS12X core's enhanced interrupt handling and dual CAN controllers (typical for S12XD family) enable simultaneous high-speed CAN (500 kbps) and CAN-FD traffic without frame loss. With 384 KB Flash, engineers can implement routing tables, network management, and diagnostic UDS stacks (ISO 14229) within a single MCU. The 144-pin LQFP exposes ample pins for dual CAN transceivers and diagnostic-line interfaces.
推荐
Automotive Lighting Controller
The S912XDT384J1MAG drives complex exterior lighting ECUs controlling headlamps, tail lamps, and dynamic turn indicators via PWM channels. Its 16-bit timer module generates precise PWM frequencies for LED dimming and matrix-beam sequencing, while the 384 KB Flash accommodates multi-variant light-pattern firmware and OEM-specific calibration. AEC-Q100 qualification and the -40C to +125C range allow mounting near lamp assemblies exposed to engine-bay heat. The 144-pin LQFP package supports high pin-count LED driver interfaces.
推荐
HVAC Control Unit
The S912XDT384J1MAG powers HVAC control units that read cabin temperature, humidity, and blower-speed sensors while driving stepper motors and LCD displays. The HCS12X core's deterministic response handles real-time temperature control loops, and 384 KB Flash supports multi-zone climate logic plus OEM feature variants. The integrated ADC and PWM peripherals interface directly with thermistor bridges and brushless blower drivers without external ICs. AEC-Q100 grade and 144-pin LQFP suit in-dash mounting where automotive EMC compliance is mandatory.
推荐
Industrial CAN Sensor Node
The S912XDT384J1MAG fits industrial CAN-based sensor nodes that aggregate multiple analog and digital sensors onto a single CAN bus segment. Its 384 KB Flash supports local sensor-calibration tables, while the HCS12X core runs CANopen or DeviceNet protocol stacks with predictable timing. The wide -40C to +125C range enables cabinet-free mounting near motors or hydraulic equipment, and the 144-pin LQFP exposes pins for SPI sensor arrays and digital I/O. AEC-Q100 qualification provides headroom for harsh industrial environments.
推荐
Instrument Cluster Peripheral
The S912XDT384J1MAG serves as a peripheral microcontroller in instrument clusters, controlling gauge stepper motors, indicator lamps, and telltale LEDs behind the cluster. Its 16-bit PWM and timer modules drive stepper-motor pointer movements smoothly across the full operating temperature range. The 384 KB Flash accommodates multi-locale telltale sequences and cluster diagnostics. AEC-Q100 qualification and the 144-pin LQFP package support direct PCB integration inside instrument clusters requiring automotive-grade reliability.
推荐
推荐产品汇总
工程参考数据： S912XDT384J1MAG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | S912XEQ384J3CALR | S912XEQ512J2MAA | S912XET512J3MAG | S912XEQ512J2MAL | S912XEG384J2CALR | S912XEP768J4CAL |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-144 (LFQFP) | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same |
| Core Architecture | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) |
| Flash Memory | 384 KB | 384 KB | 512 KB (+33%) | 512 KB (+33%) | 512 KB (+33%) | 384 KB | 768 KB (+100%) |
| CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | Last Time Buy | Active | Active | Active | Active | Active | Active |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
关键差异点
- Industry-standard S12X instruction set with HCS12 upward compatibility （对比 S912XEQ384J3CALR)
- Higher Flash migration path in the same footprint （对比 S912XEQ512J2MAA)
- Automotive-grade AEC-Q100 qualification （对比 Industrial S12X variants (S9S08 family))
设计说明
Decouple each VDDX/VSSX pair with a 100 nF X7R ceramic capacitor placed within 5 mm of the IC pins, and add a 4.7 uF bulk capacitor near VDDR. The S12X core runs from the internal voltage regulator fed by VDDR, and inadequate decoupling causes Flash programming failures during BDM writes. Place the 100 nF caps on the same layer as the MCU with vias to a continuous ground plane below.
Route the CAN TX/RX differential pairs as 120 ohm impedance-matched traces with a ground plane beneath to maintain automotive EMC compliance. Keep the CAN bus stubs shorter than 1/10 of the signal rise time to prevent reflections at 500 kbps and CAN-FD data rates. Match the length of CAN_H and CAN_L traces within 5 mm to preserve signal symmetry.
Do not leave the BKGD pin floating - either pull it high through a 10 kohm resistor or drive it from the BDM tool only when programming. Floating BKGD can cause unintended reset events or mode-entry failures at power-up. Similarly, the TEST pin must be tied to VSSX through a 10 kohm resistor; leaving TEST floating may invoke factory-test modes.
Estimated: At 80 MHz core clock with full peripheral activity, the S912XDT384J1MAG dissipates approximately 0.5 W. The LQFP-144 package has a theta_JA around 45 C/W on a standard 4-layer PCB, yielding a junction temperature rise of about 22 C above ambient. Automotive AEC-Q100 Grade 1 (-40C to +125C ambient) is still met with proper PCB copper thermal relief. Add thermal vias beneath the exposed pad area to improve heat spreading in sealed enclosures.
When using the external bus interface (ECLK/address/data) to attach external memory, keep bus traces under 50 mm and add 33 ohm series damping resistors near the MCU pins. Match impedance to 50 ohm microstrip with reference to an unbroken ground plane. Disable the external bus interface if not used to reduce EMI emissions on adjacent analog inputs.
合规信息
AEC-Q100 automotive qualified per NXP product marking (Temperature Grade: AUTOMOTIVE, package code LFQFP). RoHS compliant per NXP product page. Halogen-free status not explicitly stated in the verified data - marked unknown.
