S912XET512J3VAG - 16-bit 50MHz 512KB Flash MCU | NXP
料号： S912XET512J3VAG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
S912XET512J3VAG 概述
A 16-bit microcontroller (MCU) is a single-chip computer whose CPU processes data in 16-bit words, sitting between 8-bit parts (low cost, simple control) and 32-bit parts (high compute) in the embedded hierarchy. The HCS12X family, originally developed by Freescale Semiconductor and now part of NXP Semiconductors, is a widely used automotive and industrial MCU architecture valued for its deterministic single-cycle core, 5V-tolerant I/O, and long lifecycle support.
Key features of the S912XET512J3VAG include the XGATE co-processor, a separate RISC engine that offloads interrupt handling and I/O processing to create virtual peripherals and boost overall system throughput. Additional highlights are flexible, programmable hardware-emulated EEPROM, a memory protection unit (MPU) with supervisor/user modes for system integrity, and a 12-bit ADC with 3 us conversion time for accurate analog acquisition.
On the peripheral side, the device offers an enhanced capture timer (ECT), periodic interrupt timer (PIT), real-time interrupt (RTI), PWM, watchdog timer (WDT), low-voltage detect (LVD), and power-on reset (POR). Connectivity interfaces cover CANbus for automotive networks, I2C, SPI, SCI (UART), IrDA, and an external bus interface (EBI/EMI), giving designers flexible options for both in-vehicle networking and board-level expansion.
Typical applications include automotive body and chassis modules, industrial control systems, motor management units, and building automation nodes where a robust 16-bit core, CAN connectivity, and 105C-capable variants are required. The large 512 KB Flash accommodates complex protocol stacks such as CAN diagnostics (UDS/OBD) alongside application code.
A key design consideration is clock configuration: to reach the full 50 MHz bus speed the on-chip PLL must be programmed correctly at startup, and EMC layout practices (short crystal traces, solid ground plane) become important. Budget Flash retention and EEPROM emulation endurance per the manufacturer datasheet for write-intensive uses.
This page synthesizes distributor availability data, same-family drop-in alternatives, parametric comparison tables, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： S912XET512J3VAG ——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： S912XET512J3VAG （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Flash Memory, Core, EEPROM.
快速对比工具——选择替代料号进行并排对比：
S912XET512J2VAGR
✅ 直接替换✓ 有现货
$1 / 个
查看数据手册 →S912XET512BMAGR
✅ 直接替换✓ 有现货
$6.6 / 个
查看数据手册 →S912XEQ512J3VAG
✅ 直接替换✓ 有现货
$10.75 / 个
查看数据手册 →S912XEG384J2VAL
✅ 直接替换✓ 有现货
$17.8 / 个
查看数据手册 →S912XET256J2VAG
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →MC9S12XEP768CAG
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$19.85 / 个
查看数据手册 →MC9S12XDT512MAA
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →S912XET512J3VAG 最大额定值与电气特性
| Core Processor | HCS12X |
| Core Size | 16-bit |
| Bus Speed | 50 MHz |
| Program Memory Size | 512 KB (512K x 8) |
| Program Memory Type | FLASH |
| EEPROM | Hardware-emulated, programmable (size per datasheet) |
| Co-processor | XGATE RISC co-processor |
| Memory Protection | MPU with supervisor/user modes |
| ADC Resolution | 12-bit |
| ADC Conversion Time | 3 us |
| Connectivity | CANbus, EBI/EMI, I2C, IrDA, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT, ECT, PIT, RTI |
| Number of I/O | 119 |
| 封装 | 144-LQFP (20x20 mm) |
| 安装类型 | Surface Mount |
| Terminal Form | Gull Wing |
| Part Status | Active |
S912XET512J3VAG 144-lqfp (20x20 mm) 引脚配置指南
S912XET512J3VAG（144-lqfp (20x20 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： S912XET512J3VAG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
S912XET512J3VAG 适用于 6 应用s: Automotive Body Control Modules, Industrial Motor Control and Drives, CAN Network Gateway Nodes, Building Automation and HVAC Controllers, Agricultural and Off-Highway Vehicle ECUs, Test and Measurement Instrumentation.
Automotive Body Control Modules
Body control modules (BCMs) coordinate lighting, wipers, door locks, and window motors across a CAN network. The S912XET512J3VAG fits this role with its built-in CANbus interface, 119 I/O lines for direct loads and switches, 12-bit ADC with 3 us conversion for switch and sensor multiplexing, and XGATE co-processor to service CAN and I/O interrupts without loading the main CPU. The 512 KB Flash holds the full lighting/load-control application plus UDS diagnostics. The hardware-emulated EEPROM stores configuration and fault-history data across power cycles. Automotive-focused designs should select the -40/+105 degC qualified S912XEQ512J3VAG variant instead.
推荐
Industrial Motor Control and Drives
Industrial motor controllers require fast analog feedback, precise timing, and robust communications. The S912XET512J3VAG provides a 12-bit ADC with 3 us conversion time for current and position sensing, the enhanced capture timer (ECT) for PWM measurement and encoder capture, and PWM outputs for inverter staging. The XGATE co-processor offloads time-critical current-loop housekeeping, while the periodic interrupt timer (PIT) sequences control loops deterministically at up to the 50 MHz bus rate. CANbus links the drive to factory networks, and the watchdog timer (WDT) enforces safe shutdown on software faults. The MPU adds protection for parameter tables in shared memory.
推荐
CAN Network Gateway Nodes
Gateway nodes route and translate messages between CAN segments and other buses. The S912XET512J3VAG is well suited because its XGATE co-processor can implement a high-throughput CAN message buffer while the main HCS12X core runs routing logic and diagnostics. With 512 KB Flash, the part stores multiple protocol stacks (J1939, OBD/UDS) simultaneously, and the SPI and SCI interfaces extend connectivity to additional transceivers or telemetry modules. The 3 us 12-bit ADC supports monitoring of supply and sensor health on the node. The memory protection unit isolates the routing table area from application code, improving robustness of always-on gateway operation.
推荐
Building Automation and HVAC Controllers
Building automation controllers manage dampers, valves, fans, and sensors on long product lifecycles. The S912XET512J3VAG addresses this with plentiful I/O (119 lines), a 12-bit ADC for temperature and pressure inputs with 3 us conversions, SCI/I2C links to displays and sensors, and hardware-emulated EEPROM for storing schedules and calibration data without an external EEPROM device. The real-time interrupt (RTI) supports time-of-day scheduling with low overhead, and 512 KB Flash accommodates BACnet-style application growth. Long-family-availability and the 50 MHz bus provide headroom for future feature updates via field firmware upgrades over SCI or CAN.
推荐
Agricultural and Off-Highway Vehicle ECUs
Off-highway equipment ECUs must tolerate electrically harsh 12V/24V environments while controlling hydraulic valves and reading numerous sensors. The S912XET512J3VAG offers the CANbus connectivity required by ISOBUS/J1939 implement networks, 12-bit ADC sampling at 3 us for joystick and pressure sensor inputs, and PWM channels for proportional valve drivers. The low-voltage detect (LVD) and power-on reset (POR) peripherals ensure orderly behavior during cranking transients. With 512 KB Flash, a single ECU can host implement-control logic plus ISOBUS terminal stacks. For extreme-temperature cabs and engine bays, select the -40/+105 degC S912XEQ512J3VAG variant.
推荐
Test and Measurement Instrumentation
Bench and portable instrumentation benefits from the S912XET512J3VAG's deterministic 16-bit core, 3 us 12-bit ADC for auxiliary measurements, and rich communications: SCI for host links, SPI for precision converter front-ends, and I2C for configuration devices. The enhanced capture timer captures external event timing for frequency and period measurements, while the XGATE co-processor maintains buffering so the main CPU can process and format results without dropping samples. The 512 KB Flash supports menu-driven UIs and data-logging tables in hardware-emulated EEPROM. The 144-LQFP package exposes 119 I/O lines for front-panel keypads, relays, and display drivers.
推荐
推荐产品汇总
工程参考数据： S912XET512J3VAG ——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 | S912XET512J2VAGR | S912XET512BMAGR | S912XEQ512J3VAG | S912XEG384J2VAL | S912XET256J2VAG |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP - same | 144-LQFP - same | QFP 144 - same | 144-LQFP - same | 144-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Bus Speed | HCS12X 16-bit @ 50 MHz | HCS12X 16-bit @ 50 MHz | HCS12X 16-bit @ 50 MHz | S12X 16-bit @ 50 MHz | HCS12X 16-bit @ 50 MHz | HCS12X 16-bit @ 50 MHz |
| Program Flash | 512 KB | 512 KB | 512 KB | 512 KB | 384 KB | 256 KB |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes | Yes |
| Hardware-emulated EEPROM | Yes (S12XE feature) | Yes | Yes | Yes | Yes | Yes |
关键差异点
- S12XE-generation system features （对比 MC9S12XDT512MAA)
- Maximum Flash in the drop-in S12XE footprint （对比 S912XET256J2VAG)
- Standard-grade availability vs automotive-qualified sibling （对比 S912XEQ512J3VAG)
设计说明
The S12XE family operates from a single 5V nominal supply with an internal regulator for the core (verify exact range in the S12XE family datasheet). Provide solid 100 nF decoupling on each VDD/VDDA/VDDX pin pair plus 10 uF bulk near the regulator pins. Keep the analog VDDA supply filtered (ferrite plus RC) so the 12-bit ADC achieves its specified accuracy; noise on VDDA directly degrades ADC effective resolution.
For the 144-LQFP (20x20 mm), fan out with 0.5 mm pitch escape routing on a minimum 4-layer board: solid ground plane on layer 2, power pours on layer 3. Place the PLL loop filter components exactly per the S12XE family datasheet layout guidance, close to the device, with short returns to a quiet ground. Unused I/O should be configured as outputs low or inputs with pull resistors per NXP hardware design guidance (AN-style application notes for HCS12 designs) to avoid floating-pin EMI and latch-up sensitivity.
Three common pitfalls: (1) Do not assume full 50 MHz bus at reset - the PLL must be initialized in software (PLLSEL/PLL configuration) before time-critical routines run; baud rates for SCI/CAN depend on the final bus clock. (2) When using hardware-emulated EEPROM (EEE), budget erase/write endurance and reserve the correct D-Flash partition per the datasheet - writing parameter data at high frequency can exhaust endurance. (3) When substituting S12XD (e.g., MC9S12XDT512MAA) parts with S12XE parts, re-map the EEE and MPU registers, as they do not exist on the XD generation.
合规信息
Compliance data was not present in the retrieved web data. The automotive-qualified variant S912XEQ512J3VAG (-40/+105 degC) is listed by NXP for automotive applications. Verify RoHS/REACH status on the official NXP product page.
