S912XEG256J2CAL - 16-Bit HCS12X MCU 256KB Flash 112-LQFP | NXP
MPN: S912XEG256J2CAL ✓ AktifS912XEG256J2CAL Ringkasan
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.
Alternatif penggantian untuk S912XEG256J2CAL — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian S912XEG256J2CAL (sama faktor bentuk dan footprint) — berbeda di dalam Package, ADC, Supply Voltage, Operating Temperature, Core Architecture.
S912XEG128J2CAL
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
S912XET256J2CAL
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
S912XET256J2MAG
✅ Drop-InKontak untuk harga
Lihat Datasheet →S12XEQ256J2CAL
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MC9S12XEP100CAL
✅ Drop-InKontak untuk harga
Lihat Datasheet →S912XEG256J2CAL Rating Maksimal & Karakteristik Listrik
| 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 |
| Paket | 112-LQFP (20x20 mm) |
| Tipe Mounting | Surface Mount |
| Tegangan Pemuat | 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 |
| Suhu Kerja | -40 C to +85 C |
| Level MSL | 3 (168 hours) |
| Status RoHS | Compliant |
Konfigurasi Pin S912XEG256J2CAL
| Pin produk 1 | PE1 — Port E I/O bit 1 / XIRQ interrupt |
| Pin produk 2 | PE0 — Port E I/O bit 0 / IRQ interrupt |
| Pin produk 3 | BKGD — Background Debug Mode (BDM) data |
| Pin produk 4 | RESET — External reset input, active-low |
| Pin produk 5 | TEST — Test mode enable, tie to GND via 4.7 kohm |
| Pin produk 6 | VDDR — Regulator supply for internal 1.8V regulator |
| Pin produk 7 | VDD — Digital supply for I/O (3.3V/5V) |
| Pin produk 8 | VDDPLL — PLL supply, decouple with 1uF + 100nF |
| Pin produk 9 | VSS — Digital ground |
| Pin produk 10 | VSSPLL — PLL ground |
| Pin produk 11 | XTAL — Crystal oscillator input |
| Pin produk 12 | EXTAL — Crystal oscillator output or external clock input |
| Pin produk 13 | PAD0 — Port AD bit 0 / ADC input channel |
| Pin produk 14 | PAD1 — Port AD bit 1 / ADC input channel |
| Pin produk 15 | PAD2 — Port AD bit 2 / ADC input channel |
| Pin produk 16 | PAD3 — Port AD bit 3 / ADC input channel |
| Pin produk 17 | PAD4 — Port AD bit 4 / ADC input channel |
| Pin produk 18 | PAD5 — Port AD bit 5 / ADC input channel |
| Pin produk 19 | PAD6 — Port AD bit 6 / ADC input channel |
| Pin produk 20 | PAD7 — Port AD bit 7 / ADC input channel |
| Pin produk 21 | PAD8 — Port AD bit 8 / ADC input channel |
| Pin produk 22 | PAD9 — Port AD bit 9 / ADC input channel |
| Pin produk 23 | PAD10 — Port AD bit 10 / ADC input channel |
| Pin produk 24 | PAD11 — Port AD bit 11 / ADC input channel |
| Pin produk 25 | PAD12 — Port AD bit 12 / ADC input channel |
| Pin produk 26 | PAD13 — Port AD bit 13 / ADC input channel |
| Pin produk 27 | PAD14 — Port AD bit 14 / ADC input channel |
| Pin produk 28 | PAD15 — Port AD bit 15 / ADC input channel |
| Pin produk 29 | VDDA — Analog supply for ADC |
| Pin produk 30 | VSSA — Analog ground reference for ADC |
| Pin produk 31 | VRH — ADC high reference voltage input |
| Pin produk 32 | VRL — ADC low reference voltage input |
| Pin produk 33 | PM0 — Port M bit 0 |
| Pin produk 34 | PM1 — Port M bit 1 |
| Pin produk 35 | PM2 — Port M bit 2 |
| Pin produk 36 | PM3 — Port M bit 3 |
| Pin produk 37 | PM4 — Port M bit 4 |
| Pin produk 38 | PM5 — Port M bit 5 |
| Pin produk 39 | PM6 — Port M bit 6 |
| Pin produk 40 | PM7 — Port M bit 7 |
| Pin produk 41 | PJ0 — Port J I/O bit 0 |
| Pin produk 42 | PJ1 — Port J I/O bit 1 |
| Pin produk 43 | PJ2 — Port J I/O bit 2 |
| Pin produk 44 | PJ3 — Port J I/O bit 3 |
| Pin produk 45 | PJ4 — Port J I/O bit 4 |
| Pin produk 46 | PJ5 — Port J I/O bit 5 |
| Pin produk 47 | PJ6 — Port J I/O bit 6 |
| Pin produk 48 | PJ7 — Port J I/O bit 7 |
| Pin produk 49 | PK0 — Port K I/O bit 0 |
| Pin produk 50 | PK1 — Port K I/O bit 1 |
| Pin produk 51 | PK2 — Port K I/O bit 2 |
| Pin produk 52 | PK3 — Port K I/O bit 3 |
| Pin produk 53 | PK4 — Port K I/O bit 4 |
| Pin produk 54 | PK5 — Port K I/O bit 5 |
| Pin produk 55 | PK6 — Port K I/O bit 6 |
| Pin produk 56 | PK7 — Port K I/O bit 7 |
| Pin produk 57 | PA0 — Port A I/O bit 0 |
| Pin produk 58 | PA1 — Port A I/O bit 1 |
| Pin produk 59 | PA2 — Port A I/O bit 2 |
| Pin produk 60 | PA3 — Port A I/O bit 3 |
| Pin produk 61 | PA4 — Port A I/O bit 4 |
| Pin produk 62 | PA5 — Port A I/O bit 5 |
| Pin produk 63 | PA6 — Port A I/O bit 6 |
| Pin produk 64 | PA7 — Port A I/O bit 7 |
| Pin produk 65 | PB0 — Port B I/O bit 0 |
| Pin produk 66 | PB1 — Port B I/O bit 1 |
| Pin produk 67 | PB2 — Port B I/O bit 2 |
| Pin produk 68 | PB3 — Port B I/O bit 3 |
| Pin produk 69 | PB4 — Port B I/O bit 4 |
| Pin produk 70 | PB5 — Port B I/O bit 5 |
| Pin produk 71 | PB6 — Port B I/O bit 6 |
| Pin produk 72 | PB7 — Port B I/O bit 7 |
| Pin produk 73 | PC0 — Port C I/O bit 0 |
| Pin produk 74 | PC1 — Port C I/O bit 1 |
| Pin produk 75 | PC2 — Port C I/O bit 2 |
| Pin produk 76 | PC3 — Port C I/O bit 3 |
| Pin produk 77 | PC4 — Port C I/O bit 4 |
| Pin produk 78 | PC5 — Port C I/O bit 5 |
| Pin produk 79 | PC6 — Port C I/O bit 6 |
| Pin produk 80 | PC7 — Port C I/O bit 7 |
| Pin produk 81 | PD0 — Port D I/O bit 0 |
| Pin produk 82 | PD1 — Port D I/O bit 1 |
| Pin produk 83 | PD2 — Port D I/O bit 2 |
| Pin produk 84 | PD3 — Port D I/O bit 3 |
| Pin produk 85 | PD4 — Port D I/O bit 4 |
| Pin produk 86 | PD5 — Port D I/O bit 5 |
| Pin produk 87 | PD6 — Port D I/O bit 6 |
| Pin produk 88 | PD7 — Port D I/O bit 7 |
| Pin produk 89 | PF0 — Port F I/O bit 0 |
| Pin produk 90 | PF1 — Port F I/O bit 1 |
| Pin produk 91 | PF2 — Port F I/O bit 2 |
| Pin produk 92 | PF3 — Port F I/O bit 3 |
| Pin produk 93 | PF4 — Port F I/O bit 4 |
| Pin produk 94 | PF5 — Port F I/O bit 5 |
| Pin produk 95 | PF6 — Port F I/O bit 6 |
| Pin produk 96 | PF7 — Port F I/O bit 7 |
| Pin produk 97 | PG0 — Port G I/O bit 0 |
| Pin produk 98 | PG1 — Port G I/O bit 1 |
| Pin produk 99 | PG2 — Port G I/O bit 2 |
| Pin produk 100 | PG3 — Port G I/O bit 3 |
| Pin produk 101 | PG4 — Port G I/O bit 4 |
| Pin produk 102 | PG5 — Port G I/O bit 5 |
| Pin produk 103 | PG6 — Port G I/O bit 6 |
| Pin produk 104 | PG7 — Port G I/O bit 7 |
| Pin produk 105 | PH0 — Port H I/O bit 0 |
| Pin produk 106 | PH1 — Port H I/O bit 1 |
| Pin produk 107 | PH2 — Port H I/O bit 2 |
| Pin produk 108 | PH3 — Port H I/O bit 3 |
| Pin produk 109 | PH4 — Port H I/O bit 4 |
| Pin produk 110 | PH5 — Port H I/O bit 5 |
| Pin produk 111 | PH6 — Port H I/O bit 6 |
| Pin produk 112 | PH7 — Port H I/O bit 7 |
Aplikasi Umum
S912XEG256J2CAL cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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).
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk S912XEG256J2CAL — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Full 256 KB Flash with 91 I/O in 112-LQFP (vsS912XEG128J2CAL)
- Automotive-grade option shareable in same footprint (vsS912XET256J2MAG)
- Higher Flash headroom versus S912XET256J2CAL (vsS912XET256J2CAL)
Catatan Desain
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.
Informasi Konformitas
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.
