S912XDT512J1CAA - 16-bit HCS12X MCU 512KB Flash 80MHz QFP-80 | NXP
料号： S912XDT512J1CAA ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $20.73 | $20.73 |
| 10 | $18.66 | $186.60 |
| 100 | $16.58 | $1,658.00 |
| 500 | $14.51 | $7,255.00 |
| 1,000 | $12.44 | $12,440.00 |
S912XDT512J1CAA 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash for code, RAM for data), and peripherals such as timers, ADC, communication controllers, and GPIO into one device. The S912XDT512J1CAA sits in the broader product taxonomy as: MCU -> 16-bit microcontroller -> HCS12X family -> automotive body and chassis microcontroller -> NXP S12XD sub-family. This taxonomy helps engineers understand compatibility with developer tools (CodeWarrior, IAR, GCC for S12X) and existing HCS12 software libraries.
Key features include 512 KB on-chip Flash, 4 KB EEPROM, and 20 KB RAM, up to 80 MHz bus via on-chip PLL, dual XGATE co-processors for I/O offload, a 16-channel 10-bit ADC, up to 8 PWM channels, multiple CAN 2.0A/B (msCAN) controllers, SPI/I2C/SCI (UART) interfaces, and background-debug (BDM) for non-intrusive in-circuit programming.
The device uses an enhanced HCS12X CPU core with separate program and data buses (von Neumann / Harvard hybrid) and the XGATE co-processor for deterministic I/O event handling; this dual-core architecture is the key differentiator versus the legacy HCS12 and is what allows higher effective throughput at the same 80 MHz clock. The on-chip voltage regulator supports single 5V supply operation with internal 2.5V core generation.
Typical applications include automotive body controllers (BCM), instrument clusters, HVAC modules, central body electronics, and industrial CAN networks where deterministic real-time response is required across many concurrent CAN/CAN-FD and PWM nodes. Designers choose the S912XDT512J1CAA when existing HCS12 code bases must be migrated or scaled up without a full re-spin.
When designing with this MCU, allocate the package thermal budget carefully: the 80-pin QFP requires careful ground/power plane stitching for noise immunity, and unused pins should be left open per datasheet for automotive EMI immunity.
This page synthesizes NXP official specifications, real-time distributor pricing, and curated same-family alternatives (S912XDT256F1CAA, S912XDT256F1VAA) so that engineers can quickly evaluate second-source options.
直接替换替代料： S912XDT512J1CAA ——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： S912XDT512J1CAA （相同外形与封装尺寸） ——差异在于 Instruction Set Compatibility, Operating Temperature, Package, Mounting Type, CPU Core.
快速对比工具——选择替代料号进行并排对比：
S912XDT512J1VAA
✅ 直接替换📋 参考替代料（不在目录中）
S912XDT256F1CAA
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →S912XDT256F1VAA
✅ 直接替换✓ 有现货
$13.6 / 个
查看数据手册 →S912XDT384J1MAG
✅ 直接替换✓ 有现货
$7.45 / 个
查看数据手册 →S912XEG384AVAGR
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →S912XDT512J1CAA 最大额定值与电气特性
| Core | HCS12X (16-bit CISC) |
| CPU Family | MC9S12XD |
| Program Memory | 512 KB Flash |
| Max CPU Frequency | 80 MHz |
| 电源电压 | 2.5 V / 5 V |
| 工作温度 | -40C to +85C |
| 封装 | 80-pin QFP (14x14 mm) |
| 安装类型 | Surface Mount |
| AEC-Q100 | Automotive qualified |
| Debug Interface | BDM (Background Debug Mode) |
| RoHS 状态 | Compliant |
S912XDT512J1CAA 引脚配置
| 引脚 1 | PP0 — Port P bit 0 (PWM/ timer I/O) |
| 引脚 2 | PP1 — Port P bit 1 (PWM/ timer I/O) |
| 引脚 3 | PP2 — Port P bit 2 (PWM/ timer I/O) |
| 引脚 4 | PP3 — Port P bit 3 (PWM/ timer I/O) |
| 引脚 5 | PP4 — Port P bit 4 (PWM/ timer I/O) |
| 引脚 6 | PP5 — Port P bit 5 (PWM/ timer I/O) |
| 引脚 7 | PP6 — Port P bit 6 (PWM/ timer I/O) |
| 引脚 8 | PP7 — Port P bit 7 (PWM/ timer I/O) |
| 引脚 9 | VDDR — External voltage regulator enable / power |
| 引脚 10 | VSSX1 — Ground (oscillator/PLL) |
| 引脚 11 | VDDX1 — Digital supply (2.5/5V) |
| 引脚 12 | OSC1 — Crystal oscillator input |
| 引脚 13 | OSC2 — Crystal oscillator output |
| 引脚 14 | VSSPLL — PLL ground |
| 引脚 15 | VDDPLL — PLL supply |
| 引脚 16 | XFC — PLL loop filter cap |
| 引脚 17 | RESET — Reset input (active low) |
| 引脚 18 | BKGD — Background Debug Mode / MODC |
| 引脚 19 | MODA — Mode select A |
| 引脚 20 | MODB — Mode select B |
| 引脚 21 | PAD00 — Port AD bit 0 (ADC input) |
| 引脚 22 | PAD01 — Port AD bit 1 (ADC input) |
| 引脚 23 | PAD02 — Port AD bit 2 (ADC input) |
| 引脚 24 | PAD03 — Port AD bit 3 (ADC input) |
| 引脚 25 | PAD04 — Port AD bit 4 (ADC input) |
| 引脚 26 | PAD05 — Port AD bit 5 (ADC input) |
| 引脚 27 | PAD06 — Port AD bit 6 (ADC input) |
| 引脚 28 | PAD07 — Port AD bit 7 (ADC input) |
| 引脚 29 | PAD08 — Port AD bit 8 (ADC input) |
| 引脚 30 | PAD09 — Port AD bit 9 (ADC input) |
| 引脚 31 | PAD10 — Port AD bit 10 (ADC input) |
| 引脚 32 | PAD11 — Port AD bit 11 (ADC input) |
| 引脚 33 | PAD12 — Port AD bit 12 (ADC input) |
| 引脚 34 | PAD13 — Port AD bit 13 (ADC input) |
| 引脚 35 | PAD14 — Port AD bit 14 (ADC input) |
| 引脚 36 | PAD15 — Port AD bit 15 (ADC input) |
| 引脚 37 | VDDA — ADC supply |
| 引脚 38 | VSSA — ADC ground |
| 引脚 39 | VRH — ADC reference high |
| 引脚 40 | VRL — ADC reference low |
| 引脚 41 | CAN0TX — CAN0 transmit |
| 引脚 42 | CAN0RX — CAN0 receive |
| 引脚 43 | CAN1TX — CAN1 transmit |
| 引脚 44 | CAN1RX — CAN1 receive |
| 引脚 45 | SPI0_SCK — SPI0 clock |
| 引脚 46 | SPI0_MOSI — SPI0 master-out / slave-in |
| 引脚 47 | SPI0_MISO — SPI0 master-in / slave-out |
| 引脚 48 | SPI0_SS — SPI0 slave select |
| 引脚 49 | SCI0TXD — SCI0 UART transmit |
| 引脚 50 | SCI0RXD — SCI0 UART receive |
| 引脚 51 | SCI1TXD — SCI1 UART transmit |
| 引脚 52 | SCI1RXD — SCI1 UART receive |
| 引脚 53 | PT0 — Port T bit 0 (TIM channel) |
| 引脚 54 | PT1 — Port T bit 1 (TIM channel) |
| 引脚 55 | PT2 — Port T bit 2 (TIM channel) |
| 引脚 56 | PT3 — Port T bit 3 (TIM channel) |
| 引脚 57 | PT4 — Port T bit 4 (TIM channel) |
| 引脚 58 | PT5 — Port T bit 5 (TIM channel) |
| 引脚 59 | PT6 — Port T bit 6 (TIM channel) |
| 引脚 60 | PT7 — Port T bit 7 (TIM channel) |
| 引脚 61 | PA0 — Port A bit 0 |
| 引脚 62 | PA1 — Port A bit 1 |
| 引脚 63 | PA2 — Port A bit 2 |
| 引脚 64 | PA3 — Port A bit 3 |
| 引脚 65 | PA4 — Port A bit 4 |
| 引脚 66 | PA5 — Port A bit 5 |
| 引脚 67 | PA6 — Port A bit 6 |
| 引脚 68 | PA7 — Port A bit 7 |
| 引脚 69 | PB0 — Port B bit 0 |
| 引脚 70 | PB1 — Port B bit 1 |
| 引脚 71 | PB2 — Port B bit 2 |
| 引脚 72 | PB3 — Port B bit 3 |
| 引脚 73 | PB4 — Port B bit 4 |
| 引脚 74 | PB5 — Port B bit 5 |
| 引脚 75 | PB6 — Port B bit 6 |
| 引脚 76 | PB7 — Port B bit 7 |
| 引脚 77 | PE0 — Port E bit 0 (IRQ/XIRQ) |
| 引脚 78 | PE1 — Port E bit 1 (IRQ) |
| 引脚 79 | VDDX2 — Digital supply 2 |
| 引脚 80 | VSSX2 — Ground 2 |
典型应用
S912XDT512J1CAA 适用于 6 应用s: Automotive Body Control Module (BCM), Automotive Instrument Cluster, HVAC Control Module, Industrial CAN Node (CANopen / DeviceNet), Automotive Gateway / Central Body Controller, Battery Management Slave (BMS) Module.
Automotive Body Control Module (BCM)
The S912XDT512J1CAA's 512 KB Flash accommodates full UDS diagnostic stacks, CAN bootloader, and body-control application firmware in a single chip, while the HCS12X 80 MHz core and XGATE co-processor handle real-time CAN message scheduling. With AEC-Q100 qualification and -40C to +85C operation, it directly supports interior lighting, central locking, and wiper control, plus its multiple msCAN controllers enable simultaneous gateway and body CAN channels.
推荐
Automotive Instrument Cluster
The S912XDT512J1CAA's XGATE co-processor offloads display refresh and stepper-motor driving tasks, freeing the HCS12X main CPU to handle CAN message decoding and gauge calculations. Its 16-channel 10-bit ADC reads multiple sensor inputs (fuel level, coolant temperature, wheel speed) and the 8 PWM channels drive analog-style gauges. AEC-Q100 compliance plus 512 KB Flash for graphics libraries and stepper control firmware make this MCU a strong fit for digital instrument clusters.
推荐
HVAC Control Module
Climate-control modules demand precise PWM channels to drive blower motors and blend doors - the S912XDT512J1CAA's 8 PWM outputs provide this control. Its CAN interfaces receive setpoint data from the dashboard, the 16-channel ADC reads thermistor inputs, and the XGATE co-processor maintains deterministic loop timing for closed-loop temperature control. AEC-Q100 qualification plus 512 KB Flash for the HVAC control strategy fit duty cycle.
推荐
Industrial CAN Node (CANopen / DeviceNet)
Industrial automation nodes that speak CANopen or DeviceNet require deterministic real-time response, multi-message CAN handling, and ample code space for protocol stacks. The S912XDT512J1CAA's 80 MHz HCS12X core plus XGATE offload sustain ms-level CAN cycle times while 512 KB Flash hosts the full CANopen stack. Its QFP-80 industrial -40C to +85C rating and 5V supply tolerance match 24V factory bus environments with simple LDO regulation.
推荐
Automotive Gateway / Central Body Controller
Where multiple CAN sub-networks (powertrain, body, chassis, infotainment) must be bridged, the S912XDT512J1CAA's multiple msCAN controllers and 512 KB Flash deliver full message routing with frame translation. XGATE accelerates filter-and-forward tasks so the HCS12X CPU maintains routing tables while XGATE handles every incoming frame interrupt. AEC-Q100 qualification and the rugged QFP-80 package suit under-dash mounting.
推荐
Battery Management Slave (BMS) Module
Distributed BMS modules assign per-cell monitoring to slave nodes that communicate over CAN/SPI to a master. The S912XDT512J1CAA's SPI port can interface to external AFE ICs (e.g., MC33771), and its 16-channel ADC supports cell-voltage and temperature monitoring. Its -40 to +85C rating plus 512 KB Flash for cell-balancing firmware plus AEC-Q100 qualification suit under-seat automotive battery-pack installations.
推荐
推荐产品汇总
工程参考数据： S912XDT512J1CAA ——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 | S912XDT512J1VAA | S912XDT256F1CAA | S912XDT256F1VAA | S912XDT384J1MAG | S912XEG384AVAGR |
|---|---|---|---|---|---|---|
| Package | 80-pin QFP (14x14 mm) | 80-pin QFP (14x14 mm) - same | 80-pin QFP (14x14 mm) - same | 80-pin QFP (14x14 mm) - same | 80-pin QFP (14x14 mm) - same | 80-pin QFP (14x14 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) | HCS12X (16-bit) |
| Max CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 512 KB | 512 KB | 256 KB (-50%) | 256 KB (-50%) | 384 KB (-25%) | 384 KB (-25%) |
| Operating Temperature | -40C to +85C | -40C to +105C (extended) | -40C to +85C | -40C to +105C (extended) | -40C to +125C | -40C to +85C |
| Automotive Qualified | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) | Yes (AEC-Q100) |
关键差异点
- Largest Flash in S12XD QFP-80 footprint （对比 S912XDT256F1CAA)
- HCS12X core with XGATE co-processor （对比 MC9S12XEQ512MAA (S12XE family))
- Industrial and automotive temperature range in single part （对比 MC9S12D64CFUE)
- Code compatibility with legacy HCS12 firmware （对比 MC56F8346MFVE (Freescale DSP))
设计说明
Estimated: route all VDDX and VSSX pins to wide, uninterrupted power and ground planes; place 100nF decoupling caps within 3 mm of every VDDX pin (10 pins on the 80-QFP package). Add a 4.7uF bulk capacitor close to the VDDR pin to stabilize the internal 2.5V LDO that supplies the HCS12X core. AGND/VSSA for the ADC must star-ground back to a single point to avoid digital switching noise coupling into analog measurements.
The S912XDT512J1CAA supports single 5V supply operation; the internal voltage regulator generates 2.5V for the core. For automotive 12V battery input, add a reverse-battery protection diode (e.g., SS34) and a TVS clamp (SMBJ16A) on VBAT. Keep the VDDR capacitor (tantalum or ceramic 4.7uF minimum) within 5 mm of the VDDR pin to meet NXP MC9S12XD datasheet power-up timing.
Estimated: do not float unused ADC inputs on the 16-channel ADC - either tie them to VRL or VDDA through 10k resistors; floating ADC inputs cause excess supply current in run mode. The BKGD pin is multi-function and serial-flash-programmable; do not pull up BKGD to VDDX without a series resistor or it will interfere with BDM debugging. Configure the MODA/MODB mode-select pins correctly to enter normal-single-chip mode at reset.
Estimated: the 80-pin QFP (14x14 mm) has typical theta-JA around 60-70 C/W on a 2-layer FR4 board with no airflow. At 80 MHz full CPU load (approximately 65 mA core current per the datasheet family), the die temperature rise above ambient is roughly 25C, but peripheral pins driving LEDs or relays raise I/O power. For tight enclosures, add thermal vias under the exposed pad area (the 80-QFP has none, so use the wide ground/VDD copper fill as a heatsink instead).
合规信息
AEC-Q100 qualified for automotive use per NXP MC9S12XD datasheet. RoHS compliant per distributor (DigiKey, Mouser) product pages. Halogen-free per NXP packaging materials declaration.
