S912XDT512J1CAA - 16-bit HCS12X MCU 512KB Flash 80MHz QFP-80 | NXP
N.º de pieza: S912XDT512J1CAA ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 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 Descripción general
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.
Alternativas directas para S912XDT512J1CAA — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con S912XDT512J1CAA (mismo factor de forma y huella) — difiere en Instruction Set Compatibility, Operating Temperature, Package, Mounting Type, CPU Core.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
S912XDT512J1VAA
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
S912XDT256F1CAA
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →S912XDT256F1VAA
✅ Sustitución directa✓ En stock
$13.6 / unidad
Ver hoja de datos →S912XDT384J1MAG
✅ Sustitución directa✓ En stock
$7.45 / unidad
Ver hoja de datos →S912XEG384AVAGR
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →S912XDT512J1CAA Valores máximos y características eléctricas
| Core | HCS12X (16-bit CISC) |
| CPU Family | MC9S12XD |
| Program Memory | 512 KB Flash |
| Max CPU Frequency | 80 MHz |
| Tensión de alimentación | 2.5 V / 5 V |
| Temperatura de funcionamiento | -40C to +85C |
| Encapsulado | 80-pin QFP (14x14 mm) |
| Tipo de montaje | Surface Mount |
| AEC-Q100 | Automotive qualified |
| Debug Interface | BDM (Background Debug Mode) |
| Estado RoHS | Compliant |
Configuración de pines de S912XDT512J1CAA
| Pin 1 | PP0 — Port P bit 0 (PWM/ timer I/O) |
| Pin 2 | PP1 — Port P bit 1 (PWM/ timer I/O) |
| Pin 3 | PP2 — Port P bit 2 (PWM/ timer I/O) |
| Pin 4 | PP3 — Port P bit 3 (PWM/ timer I/O) |
| Pin 5 | PP4 — Port P bit 4 (PWM/ timer I/O) |
| Pin 6 | PP5 — Port P bit 5 (PWM/ timer I/O) |
| Pin 7 | PP6 — Port P bit 6 (PWM/ timer I/O) |
| Pin 8 | PP7 — Port P bit 7 (PWM/ timer I/O) |
| Pin 9 | VDDR — External voltage regulator enable / power |
| Pin 10 | VSSX1 — Ground (oscillator/PLL) |
| Pin 11 | VDDX1 — Digital supply (2.5/5V) |
| Pin 12 | OSC1 — Crystal oscillator input |
| Pin 13 | OSC2 — Crystal oscillator output |
| Pin 14 | VSSPLL — PLL ground |
| Pin 15 | VDDPLL — PLL supply |
| Pin 16 | XFC — PLL loop filter cap |
| Pin 17 | RESET — Reset input (active low) |
| Pin 18 | BKGD — Background Debug Mode / MODC |
| Pin 19 | MODA — Mode select A |
| Pin 20 | MODB — Mode select B |
| Pin 21 | PAD00 — Port AD bit 0 (ADC input) |
| Pin 22 | PAD01 — Port AD bit 1 (ADC input) |
| Pin 23 | PAD02 — Port AD bit 2 (ADC input) |
| Pin 24 | PAD03 — Port AD bit 3 (ADC input) |
| Pin 25 | PAD04 — Port AD bit 4 (ADC input) |
| Pin 26 | PAD05 — Port AD bit 5 (ADC input) |
| Pin 27 | PAD06 — Port AD bit 6 (ADC input) |
| Pin 28 | PAD07 — Port AD bit 7 (ADC input) |
| Pin 29 | PAD08 — Port AD bit 8 (ADC input) |
| Pin 30 | PAD09 — Port AD bit 9 (ADC input) |
| Pin 31 | PAD10 — Port AD bit 10 (ADC input) |
| Pin 32 | PAD11 — Port AD bit 11 (ADC input) |
| Pin 33 | PAD12 — Port AD bit 12 (ADC input) |
| Pin 34 | PAD13 — Port AD bit 13 (ADC input) |
| Pin 35 | PAD14 — Port AD bit 14 (ADC input) |
| Pin 36 | PAD15 — Port AD bit 15 (ADC input) |
| Pin 37 | VDDA — ADC supply |
| Pin 38 | VSSA — ADC ground |
| Pin 39 | VRH — ADC reference high |
| Pin 40 | VRL — ADC reference low |
| Pin 41 | CAN0TX — CAN0 transmit |
| Pin 42 | CAN0RX — CAN0 receive |
| Pin 43 | CAN1TX — CAN1 transmit |
| Pin 44 | CAN1RX — CAN1 receive |
| Pin 45 | SPI0_SCK — SPI0 clock |
| Pin 46 | SPI0_MOSI — SPI0 master-out / slave-in |
| Pin 47 | SPI0_MISO — SPI0 master-in / slave-out |
| Pin 48 | SPI0_SS — SPI0 slave select |
| Pin 49 | SCI0TXD — SCI0 UART transmit |
| Pin 50 | SCI0RXD — SCI0 UART receive |
| Pin 51 | SCI1TXD — SCI1 UART transmit |
| Pin 52 | SCI1RXD — SCI1 UART receive |
| Pin 53 | PT0 — Port T bit 0 (TIM channel) |
| Pin 54 | PT1 — Port T bit 1 (TIM channel) |
| Pin 55 | PT2 — Port T bit 2 (TIM channel) |
| Pin 56 | PT3 — Port T bit 3 (TIM channel) |
| Pin 57 | PT4 — Port T bit 4 (TIM channel) |
| Pin 58 | PT5 — Port T bit 5 (TIM channel) |
| Pin 59 | PT6 — Port T bit 6 (TIM channel) |
| Pin 60 | PT7 — Port T bit 7 (TIM channel) |
| Pin 61 | PA0 — Port A bit 0 |
| Pin 62 | PA1 — Port A bit 1 |
| Pin 63 | PA2 — Port A bit 2 |
| Pin 64 | PA3 — Port A bit 3 |
| Pin 65 | PA4 — Port A bit 4 |
| Pin 66 | PA5 — Port A bit 5 |
| Pin 67 | PA6 — Port A bit 6 |
| Pin 68 | PA7 — Port A bit 7 |
| Pin 69 | PB0 — Port B bit 0 |
| Pin 70 | PB1 — Port B bit 1 |
| Pin 71 | PB2 — Port B bit 2 |
| Pin 72 | PB3 — Port B bit 3 |
| Pin 73 | PB4 — Port B bit 4 |
| Pin 74 | PB5 — Port B bit 5 |
| Pin 75 | PB6 — Port B bit 6 |
| Pin 76 | PB7 — Port B bit 7 |
| Pin 77 | PE0 — Port E bit 0 (IRQ/XIRQ) |
| Pin 78 | PE1 — Port E bit 1 (IRQ) |
| Pin 79 | VDDX2 — Digital supply 2 |
| Pin 80 | VSSX2 — Ground 2 |
Aplicaciones típicas
S912XDT512J1CAA es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para S912XDT512J1CAA — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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) |
Diferenciadores clave
- Largest Flash in S12XD QFP-80 footprint (frente a S912XDT256F1CAA)
- HCS12X core with XGATE co-processor (frente a MC9S12XEQ512MAA (S12XE family))
- Industrial and automotive temperature range in single part (frente a MC9S12D64CFUE)
- Code compatibility with legacy HCS12 firmware (frente a MC56F8346MFVE (Freescale DSP))
Notas de diseño
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).
Información de cumplimiento
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.
