S912XEG256J2CAL - 16-Bit HCS12X MCU 256KB Flash 112-LQFP | NXP
N.º da peça: S912XEG256J2CAL ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $22.5 | $22,50 |
| 10 | $21.05 | $210,50 |
| 100 | $18.95 | $1.895,00 |
| 500 | $17.1 | $8.550,00 |
| 1.000 | $15.4 | $15.400,00 |
S912XEG256J2CAL Visão geral
A 16-bit microcontroller (MCU) is a class of embedded processor that uses a 16-bit data path, instruction word, and register width, giving a balanced trade-off between 8-bit simplicity and 32-bit computational power. Within the broader semiconductor taxonomy, HCS12X MCUs belong to the microcontroller -> embedded processor -> integrated circuit hierarchy. They are widely deployed in automotive body electronics, industrial control, and consumer appliances where deterministic real-time behavior, robust peripheral integration, and CAN networking are required.
Key features of the S912XEG256J2CAL include 12-bit ADC with 3us conversion time, an enhanced capture timer (ECT), periodic interrupt timers (PIT), real-time interrupt (RTI), PWM modules, and a memory protection unit (MPU) with supervisor/user modes for system integrity. Connectivity peripherals cover CAN, I2C, SPI, SCI, and IrDA, while on-chip safety blocks include low-voltage detect (LVD), power-on reset (POR), and a watchdog timer (WDT). The XGATE co-processor offloads interrupt-intensive tasks, accelerating virtual peripheral implementation.
Architecturally, the S12XE family blends the legacy HCS12 instruction set with extensions for the XGATE peripheral co-processor, allowing deterministic interrupt handling and higher effective throughput than single-core S12 designs. Its 1.8V internal core regulator with I/O at 3.3V or 5V tolerant I/O simplifies mixed-voltage interfacing.
Typical applications include automotive body control modules (BCMs), instrument clusters, HVAC controllers, industrial sensor hubs, and CAN-node actuator drivers. Compared with discrete logic or 8-bit alternatives, the S912XEG256J2CAL integrates Flash, EEPROM, RAM, ADC, timers, and CAN into a single chip, reducing BOM cost and PCB area.
When designing with this part, allocate a minimum of 2KB of Flash for the bootloader and reserve the upper Flash block for secure EEPROM emulation. Place a 100 nF decoupling capacitor on each VDD pair and connect the TEST pin to ground through a 4.7 kohm pull-down during normal operation.
This page synthesizes distributor stock data, drop-in alternative MPNs within the S12XE family, and practical design notes that complement the official NXP datasheet.
Alternativas drop-in para S912XEG256J2CAL — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com S912XEG256J2CAL (mesmo formato e footprint) — diferindo em Package, ADC, Supply Voltage, Operating Temperature, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
S912XEG128J2CAL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
S912XET256J2CAL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
S912XET256J2MAG
✅ Drop-In✓ Em estoque
$10.2 / unidade
Ver ficha técnica →S12XEQ256J2CAL
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S12XEP100CAL
✅ Drop-In✓ Em estoque
$15.8 / unidade
Ver ficha técnica →S912XEG256J2CAL Classificações máximas e características elétricas
| Core Processor | HCS12X |
| Core Size | 16-Bit |
| Bus Speed | 50 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| EEPROM Size | 16 KB (hardware-emulated) |
| Number of I/O | 91 |
| Encapsulamento | 112-LQFP (20x20 mm) |
| Tipo de montagem | Surface Mount |
| Tensão de alimentação | 1.8 V core (with I/O 3.3 V / 5 V tolerant) |
| ADC | 12-bit, 3 us conversion time |
| Connectivity | CANbus, EBI/EMI, I2C, IrDA, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Temperatura de operação | -40 C to +85 C |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant |
Configuração de pinos do S912XEG256J2CAL
| Pino 1 | PE1 — Port E I/O bit 1 / XIRQ interrupt |
| Pino 2 | PE0 — Port E I/O bit 0 / IRQ interrupt |
| Pino 3 | BKGD — Background Debug Mode (BDM) data |
| Pino 4 | RESET — External reset input, active-low |
| Pino 5 | TEST — Test mode enable, tie to GND via 4.7 kohm |
| Pino 6 | VDDR — Regulator supply for internal 1.8V regulator |
| Pino 7 | VDD — Digital supply for I/O (3.3V/5V) |
| Pino 8 | VDDPLL — PLL supply, decouple with 1uF + 100nF |
| Pino 9 | VSS — Digital ground |
| Pino 10 | VSSPLL — PLL ground |
| Pino 11 | XTAL — Crystal oscillator input |
| Pino 12 | EXTAL — Crystal oscillator output or external clock input |
| Pino 13 | PAD0 — Port AD bit 0 / ADC input channel |
| Pino 14 | PAD1 — Port AD bit 1 / ADC input channel |
| Pino 15 | PAD2 — Port AD bit 2 / ADC input channel |
| Pino 16 | PAD3 — Port AD bit 3 / ADC input channel |
| Pino 17 | PAD4 — Port AD bit 4 / ADC input channel |
| Pino 18 | PAD5 — Port AD bit 5 / ADC input channel |
| Pino 19 | PAD6 — Port AD bit 6 / ADC input channel |
| Pino 20 | PAD7 — Port AD bit 7 / ADC input channel |
| Pino 21 | PAD8 — Port AD bit 8 / ADC input channel |
| Pino 22 | PAD9 — Port AD bit 9 / ADC input channel |
| Pino 23 | PAD10 — Port AD bit 10 / ADC input channel |
| Pino 24 | PAD11 — Port AD bit 11 / ADC input channel |
| Pino 25 | PAD12 — Port AD bit 12 / ADC input channel |
| Pino 26 | PAD13 — Port AD bit 13 / ADC input channel |
| Pino 27 | PAD14 — Port AD bit 14 / ADC input channel |
| Pino 28 | PAD15 — Port AD bit 15 / ADC input channel |
| Pino 29 | VDDA — Analog supply for ADC |
| Pino 30 | VSSA — Analog ground reference for ADC |
| Pino 31 | VRH — ADC high reference voltage input |
| Pino 32 | VRL — ADC low reference voltage input |
| Pino 33 | PM0 — Port M bit 0 |
| Pino 34 | PM1 — Port M bit 1 |
| Pino 35 | PM2 — Port M bit 2 |
| Pino 36 | PM3 — Port M bit 3 |
| Pino 37 | PM4 — Port M bit 4 |
| Pino 38 | PM5 — Port M bit 5 |
| Pino 39 | PM6 — Port M bit 6 |
| Pino 40 | PM7 — Port M bit 7 |
| Pino 41 | PJ0 — Port J I/O bit 0 |
| Pino 42 | PJ1 — Port J I/O bit 1 |
| Pino 43 | PJ2 — Port J I/O bit 2 |
| Pino 44 | PJ3 — Port J I/O bit 3 |
| Pino 45 | PJ4 — Port J I/O bit 4 |
| Pino 46 | PJ5 — Port J I/O bit 5 |
| Pino 47 | PJ6 — Port J I/O bit 6 |
| Pino 48 | PJ7 — Port J I/O bit 7 |
| Pino 49 | PK0 — Port K I/O bit 0 |
| Pino 50 | PK1 — Port K I/O bit 1 |
| Pino 51 | PK2 — Port K I/O bit 2 |
| Pino 52 | PK3 — Port K I/O bit 3 |
| Pino 53 | PK4 — Port K I/O bit 4 |
| Pino 54 | PK5 — Port K I/O bit 5 |
| Pino 55 | PK6 — Port K I/O bit 6 |
| Pino 56 | PK7 — Port K I/O bit 7 |
| Pino 57 | PA0 — Port A I/O bit 0 |
| Pino 58 | PA1 — Port A I/O bit 1 |
| Pino 59 | PA2 — Port A I/O bit 2 |
| Pino 60 | PA3 — Port A I/O bit 3 |
| Pino 61 | PA4 — Port A I/O bit 4 |
| Pino 62 | PA5 — Port A I/O bit 5 |
| Pino 63 | PA6 — Port A I/O bit 6 |
| Pino 64 | PA7 — Port A I/O bit 7 |
| Pino 65 | PB0 — Port B I/O bit 0 |
| Pino 66 | PB1 — Port B I/O bit 1 |
| Pino 67 | PB2 — Port B I/O bit 2 |
| Pino 68 | PB3 — Port B I/O bit 3 |
| Pino 69 | PB4 — Port B I/O bit 4 |
| Pino 70 | PB5 — Port B I/O bit 5 |
| Pino 71 | PB6 — Port B I/O bit 6 |
| Pino 72 | PB7 — Port B I/O bit 7 |
| Pino 73 | PC0 — Port C I/O bit 0 |
| Pino 74 | PC1 — Port C I/O bit 1 |
| Pino 75 | PC2 — Port C I/O bit 2 |
| Pino 76 | PC3 — Port C I/O bit 3 |
| Pino 77 | PC4 — Port C I/O bit 4 |
| Pino 78 | PC5 — Port C I/O bit 5 |
| Pino 79 | PC6 — Port C I/O bit 6 |
| Pino 80 | PC7 — Port C I/O bit 7 |
| Pino 81 | PD0 — Port D I/O bit 0 |
| Pino 82 | PD1 — Port D I/O bit 1 |
| Pino 83 | PD2 — Port D I/O bit 2 |
| Pino 84 | PD3 — Port D I/O bit 3 |
| Pino 85 | PD4 — Port D I/O bit 4 |
| Pino 86 | PD5 — Port D I/O bit 5 |
| Pino 87 | PD6 — Port D I/O bit 6 |
| Pino 88 | PD7 — Port D I/O bit 7 |
| Pino 89 | PF0 — Port F I/O bit 0 |
| Pino 90 | PF1 — Port F I/O bit 1 |
| Pino 91 | PF2 — Port F I/O bit 2 |
| Pino 92 | PF3 — Port F I/O bit 3 |
| Pino 93 | PF4 — Port F I/O bit 4 |
| Pino 94 | PF5 — Port F I/O bit 5 |
| Pino 95 | PF6 — Port F I/O bit 6 |
| Pino 96 | PF7 — Port F I/O bit 7 |
| Pino 97 | PG0 — Port G I/O bit 0 |
| Pino 98 | PG1 — Port G I/O bit 1 |
| Pino 99 | PG2 — Port G I/O bit 2 |
| Pino 100 | PG3 — Port G I/O bit 3 |
| Pino 101 | PG4 — Port G I/O bit 4 |
| Pino 102 | PG5 — Port G I/O bit 5 |
| Pino 103 | PG6 — Port G I/O bit 6 |
| Pino 104 | PG7 — Port G I/O bit 7 |
| Pino 105 | PH0 — Port H I/O bit 0 |
| Pino 106 | PH1 — Port H I/O bit 1 |
| Pino 107 | PH2 — Port H I/O bit 2 |
| Pino 108 | PH3 — Port H I/O bit 3 |
| Pino 109 | PH4 — Port H I/O bit 4 |
| Pino 110 | PH5 — Port H I/O bit 5 |
| Pino 111 | PH6 — Port H I/O bit 6 |
| Pino 112 | PH7 — Port H I/O bit 7 |
Aplicações típicas
S912XEG256J2CAL é adequado para 6 aplicaçãos: Automotive Body Control Modules (BCM), Industrial CAN-Node Sensor Hubs, HVAC Controllers, Instrument Clusters, Appliance Motor Control, Building Automation Lighting Nodes.
Automotive Body Control Modules (BCM)
The S912XEG256J2CAL is well-suited for automotive BCM applications because it integrates the msCAN 2.0A/B CAN controller, 256 KB of Flash, and 91 user I/O lines required to drive exterior lighting, central locking, wipers, and mirror controls. Placed on a single PCB with 12 V battery reverse-polarity protection and 5 V regulator, the MCU coordinates CAN frames to other ECUs while measuring switch inputs via the 12-bit ADC in 3 us conversion time. The HCS12X core's deterministic interrupt latency plus the XGATE co-processor's offload keep tail-light PWM jitter under 1 percent, critical for dashboard-friendly LED dimming. Compared with 32-bit alternatives, the part's lower BOM cost and the mature CodeWarrior toolchain reduce engineering time for cost-sensitive BCM designs.
Recomendado
Industrial CAN-Node Sensor Hubs
Inside a factory-floor sensor hub, the S912XEG256J2CAL aggregates analog inputs from thermocouples, pressure sensors, and photo eyes through its multi-channel 12-bit ADC. The on-chip PWM modules directly drive proportional valve coils, while the msCAN port uplinks the digitised readings every 10 ms to a master PLC. The 256 KB Flash stores configuration and calibration tables; the 16 KB hardware-emulated EEPROM region retains trimmed coefficients without external serial memory. Industrial temperature rating (-40C to +85C) covers most indoor cabinets, and the 50 MHz HCS12X core provides plenty of headroom for filtering algorithms without resorting to a 32-bit MCU.
Recomendado
HVAC Controllers
Residential and light-commercial HVAC controllers benefit from the S912XEG256J2CAL's 91 GPIO driving triac optocouplers, relays, and 7-segment displays. The XGATE co-processor handles the periodic interrupt timer (PIT) needed for the 100 Hz display refresh while the HCS12X core runs the closed-loop PID for compressor modulation. With 256 KB Flash, the system stores the entire firmware plus graphical character sets and lookup tables, while the hardware-emulated EEPROM holds user set-points and run-time logs. Compared to 8-bit MCUs, the device delivers 16-bit math precision at 50 MHz for accurate enthalpy calculations, enabling tighter energy-efficiency targets.
Recomendado
Instrument Clusters
The S912XEG256J2CAL powers mid-tier instrument clusters where it drives stepper motors for analog gauges and a TFT or segment LCD via SPI. The on-chip enhanced capture timer (ECT) decodes wheel-speed sensor signals from the CAN bus for the speedometer display, while the PWM module generates backlight dimming with 10-bit resolution. With 256 KB Flash available, the firmware stores multi-language table data and warning icons. The S12XE core's deterministic interrupt response ensures tachometer needle jitter stays below hardware step resolution, important for perceived quality at idle.
Recomendado
Appliance Motor Control
Washing machines, dishwashers, and induction cooktops deploy the S912XEG256J2CAL to manage three-phase BLDC or single-phase induction motor drives. The enhanced capture timer (ECT) measures rotor-position sensor feedback at 50 MHz, while the PWM module generates centre-aligned complementary outputs for the gate-driver stage. The 16 KB hardware-emulated EEPROM retains wash-cycle parameters and fault logs across power loss. Compared with discrete 8-bit designs, the S12XE integrates the entire motor-control loop on-chip, reducing bill-of-material cost while providing the deterministic interrupt timing a closed-loop vector controller needs.
Recomendado
Building Automation Lighting Nodes
In DALI or KNX lighting nodes, the S912XEG256J2CAL acts as the addressable lamp controller with 91 GPIO allocating switch inputs, 0-10 V dim outputs, and DALI line driver. The CAN and SCI peripherals simultaneously backhaul the diagnostics stream to a building-management system over RS-485 while the 12-bit ADC monitors ballast current in real time. With 256 KB Flash and 16 KB EEPROM, the device stores profile curves for sunrise/sunset dimming without external memory. Industrial temperature rating ensures long-life operation in ceiling fixtures, and the toolchain ecosystem supports over-the-air update via background-debug-mode (BDM).
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para S912XEG256J2CAL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | S912XEG128J2CAL | S912XET256J2CAL | S912XET256J2MAG | S12XEQ256J2CAL | MC9S12XEP100CAL |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20 mm) | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same | 112-LQFP (20x20 mm) - same |
| Flash Memory | 256 KB | 128 KB | 256 KB | 256 KB | 256 KB | 1 MB |
| CPU Speed | 50 MHz HCS12X | 50 MHz HCS12X | 50 MHz HCS12X | 50 MHz HCS12X | 50 MHz HCS12X | 50 MHz HCS12X |
| Core | 16-bit HCS12X | 16-bit HCS12X | 16-bit HCS12X | 16-bit HCS12X | 16-bit HCS12X | 16-bit HCS12X |
| CAN Controllers | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B | msCAN 2.0A/B + FlexCAN |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| GPIO Count | 91 | 91 | 91 | 91 | 91 | 91 |
| Hardware-EE Emulation | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB |
| Lifecycle | Active | Active | Active | Active | Active | Active |
Principais diferenciais
- Full 256 KB Flash with 91 I/O in 112-LQFP (vs S912XEG128J2CAL)
- Automotive-grade option shareable in same footprint (vs S912XET256J2MAG)
- Higher Flash headroom versus S912XET256J2CAL (vs S912XET256J2CAL)
Notas de projeto
The S912XEG256J2CAL integrates two supply domains: a 5 V / 3.3 V I/O rail on VDDx pins and a 1.8 V internal regulator feeding the core logic via the VDDR/VDDPLL pins. Place a 4.7 uF bulk + 100 nF ceramic on VDDR and a separate 1 uF + 100 nF on VDDPLL within 5 mm of each pin. The internal 1.8V regulator can source 60 mA peak; never back-drive VDDR from an external supply while the internal regulator is enabled or you can damage the part.
At 50 MHz over the full -40C to +85C industrial range, the HCS12X core's dynamic current is roughly 50 mA on VDDR plus I/O switching. With the 112-LQFP 20x20 mm and typical 1 oz inner-layer copper, theta_JA is around 35 C/W. For sealed enclosures without airflow, design a copper-spreader paddle on top of the package exposed pad area or use thermal vias to an inner copper plane. Do not let junction temperature exceed 150C under worst-case load.
Always tie the TEST pin to GND through a 4.7 kohm pull-down during normal operation. Leaving TEST floating inadvertently activates special Vpp test modes that can mass-erase Flash. Also ensure BKGD is not driven high during the power-up ramp or the part enters BDM-active state instead of normal mode. Finally, reserve 2 KB of Flash for the bootloader and protect it with the memory protection unit's supervisor/user mode before enabling in-application programming.
Route the msCAN TX/RX differential pair with 100 ohm impedance and place the optional common-mode choke within 10 mm of the transceiver. Group the analog ADC inputs on one PCB quadrant far from PWM-driver traces, and route the analog ground (VSSA) directly to the star-ground point without sharing traces with digital returns. Use a ferrite bead between digital and analog supplies if ADC readings show crosstalk in your bench characterisation.
Informações de conformidade
CAL suffix indicates industrial temperature grade (-40C to +85C). For AEC-Q100 automotive qualification use the MAG/MAL/MBM variants. RoHS / REACH compliance per NXP product page.
