MC9S12XDG128MAA - 16-bit HCS12X MCU, 128KB Flash, 80MHz, 80-QFP | NXP
N.º de pieza: MC9S12XDG128MAA ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.42 | $18,42 |
| 10 | $16.85 | $168,50 |
| 100 | $14.2 | $1.420,00 |
| 500 | $12.1 | $6.050,00 |
| 1.000 | $10.45 | $10.450,00 |
MC9S12XDG128MAA Descripción general
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as timers, ADC, communication interfaces (CAN, SPI, SCI, I2C), and GPIO. The HCS12X architecture from Freescale (now NXP) is a 16-bit CISC core that is upward-compatible with the legacy HC12/HCS12 instruction set, with enhancements including an instruction queue, enhanced indexed addressing, and interrupt stacking identical to the HCS12 programmer's model. The X-variant adds a peripheral co-processor (XGATE) for offloading interrupt-driven tasks.
Key features include 128KB (128K x 8) of in-application programmable Flash, 12KB of RAM, an Enhanced Capture Timer (ECT), an 8-channel 10-bit ADC, multiple CAN 2.0 modules (msCAN), J1850/SCI/SPI interfaces, and an integrated voltage regulator for single 5V or 3.3V operation. The device supports background debug mode (BDM) and single-wire debug, simplifying in-circuit development and field updates.
The S12XD architecture uses a unified memory map with Flash, RAM, and EEPROM in a single address space, and includes a Memory Protection Unit (MPU) and ECC on the Flash array. The XGATE co-processor can execute data-movement and peripheral-handling routines independently, freeing the main CPU for control-loop tasks. The 80-QFP (MAA suffix) package provides 80 general-purpose I/O lines with 5V tolerant inputs.
Typical applications include automotive body and chassis ECUs, industrial CAN node controllers, building automation gateways, motor control (BLDC/PMSM) with CAN, and sensor-fusion nodes. Designers often pair the XGATE with an msCAN handler to achieve deterministic bus latency below 50 microseconds. Per the NXP product page, this part is flagged as End of Life and is not recommended for new designs - choose S12XEP or S12XET active variants for new programs.
Alternativas directas para MC9S12XDG128MAA — 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 MC9S12XDG128MAA (mismo factor de forma y huella) — difiere en Operating Temperature, Package.
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MC9S12XDG128CAA
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MC9S12XDT512MAA
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Ver hoja de datos →MC9S12XDG128MAA Valores máximos y características eléctricas
| Core Architecture | HCS12X (16-bit CISC, enhanced) |
| CPU Core | S12X with XGATE co-processor |
| Maximum CPU Frequency | 80 MHz (40 MHz bus) |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 12 KB |
| Operating Voltage | 2.5 V or 5 V (single supply with internal regulator) |
| Encapsulado | 80-pin QFP (14 x 14 mm), MAA suffix |
| Tipo de montaje | Surface Mount |
| Communication Interfaces | CAN, SCI, SPI, I2C, J1850 |
| Temperatura de funcionamiento | -40C to +125C (industrial / automotive grade) |
| Estado RoHS | Compliant |
| Background Debug Mode | Yes (BDM, single-wire) |
| Instruction Set Compatibility | Upward-compatible with HCS12, instruction queue, enhanced indexed addressing |
Configuración de pines de MC9S12XDG128MAA
| Pin 1 | BKGD — Background Debug Mode pin |
| Pin 2 | VDDR — Voltage regulator supply |
| Pin 3 | VDD — Digital supply voltage |
| Pin 4 | VSS — Digital ground |
| Pin 5 | RESET — External reset input, active low |
| Pin 6 | XTAL — Crystal oscillator input |
| Pin 7 | EXTAL — Crystal oscillator input |
| Pin 8 | VSSXOSC — Crystal oscillator ground |
| Pin 9 | TEST — Test mode pin (must be tied to VSS in normal operation) |
| Pin 10 | PE0/XIRQ — Port E bit 0 / non-maskable interrupt |
| Pin 11 | PE1/IRQ — Port E bit 1 / maskable interrupt |
| Pin 12 | PE2 — Port E bit 2 |
| Pin 13 | PE3 — Port E bit 3 |
| Pin 14 | PE4 — Port E bit 4 |
| Pin 15 | PE5 — Port E bit 5 |
| Pin 16 | PE6 — Port E bit 6 |
| Pin 17 | PE7 — Port E bit 7 |
| Pin 18 | PAD00/AN00 — Port AD bit 0 / ADC channel 0 |
| Pin 19 | PAD01/AN01 — Port AD bit 1 / ADC channel 1 |
| Pin 20 | PAD02/AN02 — Port AD bit 2 / ADC channel 2 |
| Pin 21 | PAD03/AN03 — Port AD bit 3 / ADC channel 3 |
| Pin 22 | PAD04/AN04 — Port AD bit 4 / ADC channel 4 |
| Pin 23 | PAD05/AN05 — Port AD bit 5 / ADC channel 5 |
| Pin 24 | PAD06/AN06 — Port AD bit 6 / ADC channel 6 |
| Pin 25 | PAD07/AN07 — Port AD bit 7 / ADC channel 7 |
| Pin 26 | PAD08/AN08 — Port AD bit 8 / ADC channel 8 |
| Pin 27 | PAD09/AN09 — Port AD bit 9 / ADC channel 9 |
| Pin 28 | PAD10/AN10 — Port AD bit 10 / ADC channel 10 |
| Pin 29 | PAD11/AN11 — Port AD bit 11 / ADC channel 11 |
| Pin 30 | PAD12/AN12 — Port AD bit 12 / ADC channel 12 |
| Pin 31 | PAD13/AN13 — Port AD bit 13 / ADC channel 13 |
| Pin 32 | PAD14/AN14 — Port AD bit 14 / ADC channel 14 |
| Pin 33 | PAD15/AN15 — Port AD bit 15 / ADC channel 15 |
| Pin 34 | VDDA — Analog supply voltage |
| Pin 35 | VSSA — Analog ground |
| Pin 36 | VRH — ADC reference high voltage |
| Pin 37 | VRL — ADC reference low voltage |
| Pin 38 | PM0 — Port M bit 0 |
| Pin 39 | PM1 — Port M bit 1 |
| Pin 40 | PM2 — Port M bit 2 |
| Pin 41 | PM3 — Port M bit 3 |
| Pin 42 | PM4 — Port M bit 4 |
| Pin 43 | PM5 — Port M bit 5 |
| Pin 44 | PM6 — Port M bit 6 |
| Pin 45 | PM7 — Port M bit 7 |
| Pin 46 | PJ0 — Port J bit 0 |
| Pin 47 | PJ1 — Port J bit 1 |
| Pin 48 | PJ2 — Port J bit 2 |
| Pin 49 | PJ3 — Port J bit 3 |
| Pin 50 | PJ4 — Port J bit 4 |
| Pin 51 | PJ5 — Port J bit 5 |
| Pin 52 | PJ6 — Port J bit 6 |
| Pin 53 | PJ7 — Port J bit 7 |
| Pin 54 | PK0 — Port K bit 0 |
| Pin 55 | PK1 — Port K bit 1 |
| Pin 56 | PK2 — Port K bit 2 |
| Pin 57 | PK3 — Port K bit 3 |
| Pin 58 | PK4 — Port K bit 4 |
| Pin 59 | PK5 — Port K bit 5 |
| Pin 60 | PK6 — Port K bit 6 |
| Pin 61 | PK7 — Port K bit 7 |
| Pin 62 | PA0 — Port A bit 0 |
| Pin 63 | PA1 — Port A bit 1 |
| Pin 64 | PA2 — Port A bit 2 |
| Pin 65 | PA3 — Port A bit 3 |
| Pin 66 | PA4 — Port A bit 4 |
| Pin 67 | PA5 — Port A bit 5 |
| Pin 68 | PA6 — Port A bit 6 |
| Pin 69 | PA7 — Port A bit 7 |
| Pin 70 | PB0 — Port B bit 0 |
| Pin 71 | PB1 — Port B bit 1 |
| Pin 72 | PB2 — Port B bit 2 |
| Pin 73 | PB3 — Port B bit 3 |
| Pin 74 | PB4 — Port B bit 4 |
| Pin 75 | PB5 — Port B bit 5 |
| Pin 76 | PB6 — Port B bit 6 |
| Pin 77 | PB7 — Port B bit 7 |
| Pin 78 | PC0 — Port C bit 0 |
| Pin 79 | PC1 — Port C bit 1 |
| Pin 80 | PC2 — Port C bit 2 |
Aplicaciones típicas
MC9S12XDG128MAA es adecuado para 6 aplicacións: Automotive Body Control Module, Industrial CAN Node Controller, BLDC / PMSM Motor Controller, Building Automation Gateway, Sensor Fusion Node with CAN Output, HVAC and Climate Control ECU.
Automotive Body Control Module
The MC9S12XDG128MAA's S12X core with XGATE co-processor and multiple msCAN 2.0 modules make it well suited to automotive body and chassis ECUs. The XGATE handles msCAN message buffering and PWM updates in parallel, freeing the main S12X CPU for BCM logic such as lighting control, central locking, and door module coordination. The 128KB Flash accommodates a CANopen or J1939 stack plus application logic; 12KB RAM is sufficient for runtime buffers. The 80-QFP MAA package is the industry-standard automotive MCU footprint used across BCM suppliers, simplifying harness and PCB reuse. The device operates over -40C to +125C, covering under-hood and cabin requirements.
Recomendado
Industrial CAN Node Controller
For industrial CANopen or DeviceNet nodes, the MC9S12XDG128MAA offers the S12X 16-bit CPU at 80MHz (40MHz bus) and on-chip msCAN modules, removing the need for an external CAN controller. The XGATE co-processor services CAN message objects, achieving deterministic bus latency under 50us which is critical for real-time industrial protocols. 128KB Flash holds a CANopen stack plus device-specific profiles; 12KB RAM supports PDO buffers. Single 5V supply with internal 2.5V regulator simplifies power tree design in 24V industrial systems with intermediate buck regulation.
Recomendado
BLDC / PMSM Motor Controller
The MC9S12XDG128MAA's Enhanced Capture Timer (ECT) with PWM outputs is well matched to 3-phase BLDC and PMSM motor commutation. XGATE offloads ADC sequencing and current-sense sampling so the main S12X CPU runs the FOC algorithm without jitter. The 8-channel 10/12-bit ADC handles phase current feedback, while msCAN provides the bus interface to a supervisory controller. The 80-QFP MAA footprint is a common automotive motor-control land pattern, allowing reuse across pump, fan, and small traction drives. Designers often pair the MCU with a 3-phase gate driver such as the MC33937.
Recomendado
Building Automation Gateway
The MC9S12XDG128MAA is used as a sub-network gateway in building automation, bridging BACnet, LonWorks, or KNX segments to a backbone IP or CAN bus. Its multiple serial interfaces (SCI x2, SPI, I2C) handle sensor and transceiver side-channels while msCAN carries the backbone traffic. The 128KB Flash supports BACnet application code plus configuration tables; 12KB RAM holds routing buffers. XGATE offloads the serial-character parsing routines, enabling the main CPU to focus on routing logic. The wide operating temperature range supports unconditioned mechanical rooms and outdoor enclosures.
Recomendado
Sensor Fusion Node with CAN Output
In automotive ADAS sensor nodes and chassis sensors, the MC9S12XDG128MAA aggregates IMU, pressure, and wheel-speed data and reports over CAN. The S12X core at 80MHz runs Kalman filter routines; XGATE services SPI/I2C sensor reads and msCAN message buffering deterministically. The 8-channel ADC handles analog sensor inputs such as throttle position and brake pressure. 128KB Flash is sufficient for sensor drivers and a small CAN-based diagnostic stack; 12KB RAM holds filter state. The 80-QFP MAA package fits within tight sensor-housing PCBs and supports -40C to +125C automotive temperature range.
Recomendado
HVAC and Climate Control ECU
Automotive HVAC ECUs use the MC9S12XDG128MAA to drive blower motors, blend doors, and temperature sensors while communicating over CAN with the body controller. The ECT and PWM outputs control actuator drivers; msCAN provides body network connectivity. 128KB Flash stores the climate control algorithm and CAN diagnostics; 12KB RAM holds sensor tables. XGATE handles PWM duty-cycle updates so the main CPU runs the thermal model without jitter. The -40C to +125C range and 80-QFP MAA footprint suit under-dash automotive mounting requirements.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S12XDG128MAA — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S12XDG128CAA | MC9S12XDT512MAA |
|---|---|---|---|
| Package | 80-QFP (14x14 mm) | 80-QFP (14x14 mm) - same | 80-QFP (14x14 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S12X with XGATE | S12X with XGATE - same | S12X with XGATE - same |
| Maximum CPU Frequency | 80 MHz (40 MHz bus) | 80 MHz | 80 MHz |
| Flash Memory | 128 KB | 128 KB | 512 KB (+300%) |
| RAM | 12 KB | 12 KB | 32 KB (+167%) |
| Operating Temperature | -40C to +125C (industrial / automotive) | 0C to +70C (commercial) | -40C to +125C |
| Lifecycle Status | End of Life (NRND) | Not Recommended for New Designs | Active / Last Time Buy varies |
| CAN Modules (msCAN) | Multiple msCAN 2.0 A/B | Same | Same or more |
Diferenciadores clave
- XGATE co-processor for deterministic interrupt offload (frente a MC9S12DG128CFUE (non-X S12 core))
- 128KB Flash in 80-QFP MAA footprint with full automotive grade (frente a MC9S12XDG128CAA (commercial grade))
- Same 80-QFP MAA footprint as higher-density S12XDT (frente a MC9S12XDT512MAA (512KB variant))
Notas de diseño
The MC9S12XDG128MAA requires a single 5V supply on VDDR/VSS with the internal 2.5V regulator powering the core. Decouple VDDR with a 1uF X7R ceramic placed within 5mm of the pin and add a bulk 10uF tantalum or aluminum polymer capacitor. The internal voltage regulator requires an external ballast capacitor on the VDD core rail; consult the S12XD reference manual for exact values. Estimated: at 80MHz core, the device draws approximately 50-70 mA from VDDR - design your 5V LDO or buck regulator with at least 200 mA headroom.
In the 80-QFP MAA package, theta_JA is approximately 50 C/W typical on a 4-layer JEDEC test board. At -40C to +125C operation, the junction temperature must stay below 150C, leaving ~25C margin at the upper ambient bound. For under-hood automotive designs at +85C ambient with full peripheral activity, confirm with on-board thermal measurements. The XGATE co-processor adds a small additional thermal load proportional to its duty cycle - typically 5-10% of CPU thermal contribution.
Place all decoupling capacitors (0.1uF + 1uF) on VDD/VSS pairs within 2-3mm of the IC pins. The XTAL and EXTAL traces should be short and surrounded by a ground guard ring; keep crystal traces away from noisy switching signals. The 80-QFP MAA package has a 14x14 mm body with 0.65mm pitch - use 4-layer PCB with a continuous ground plane for noise immunity. Route CAN differential pairs (CANH, CANL) as a matched 100-ohm impedance pair with no stubs.
Do not float the TEST pin - it must be tied to VSS for normal operation or the device enters test mode. The BKGD pin is shared with the MODC function at reset - ensure proper pull-up or pull-down configuration for the desired debug mode. The XGATE co-processor requires explicit setup code before use - leaving it uninitialized is acceptable but disabling interrupts on the main CPU assumes XGATE handles them. Always check the S12XD errata document for known silicon revisions before locking the PCB layout.
Información de cumplimiento
RoHS compliant per NXP product page. AEC-Q100 grade not stated explicitly - the industrial -40C to +125C temperature range supports automotive under-hood designs but explicit AEC-Q100 qualification should be confirmed with NXP for safety-critical applications. Halogen-free status not stated in available data.
