S912XEQ512J3MALR - 16-bit S12X MCU, 512KB Flash, 50MHz | NXP
N.º da peça: S912XEQ512J3MALR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.42 | $164,20 |
| 100 | $14.08 | $1.408,00 |
| 500 | $12.35 | $6.175,00 |
| 1.000 | $10.92 | $10.920,00 |
S912XEQ512J3MALR Visão geral
An MCU (microcontroller unit) is a single-chip computer that combines a CPU core, on-chip memory, and a rich set of peripherals — ADCs, timers, communication interfaces — into one package. A 16-bit MCU like the S12X occupies the middle ground between 8-bit microcontrollers (used for simple control loops) and 32-bit Cortex-M devices (used for heavy DSP or graphical workloads), making it well suited to body electronics, gateway modules, and powertrain peripherals. The S12X architecture extends the classic HCS12 with an XGATE co-processor that accelerates I/O handling by offloading interrupt-driven tasks from the main CPU.
Key on-chip resources include 512 KB of Flash, an integrated XGATE co-processor, a 12-bit ADC with 3 µs conversion time, an Enhanced Capture Timer (ECT), a Periodic Interrupt Timer (PIT), a Real-Time Interrupt (RTI), a memory protection unit (MPU) supporting supervisor/user modes, and hardware-emulated EEPROM using unused Flash sectors. Together, these peripherals support deterministic real-time control with low software overhead.
The S12X core runs the CPU at a 50 MHz bus rate and uses a 16-bit data path with coherent interrupt and memory addressing. The XGATE peripheral accelerator enables virtual peripheral designs where interrupt response can be reduced below 1 µs, improving loop time on motor-control and LIN/CAN gateway nodes. Automotive-grade qualification means the die is characterized for -40 °C to +125 °C and has been validated against the AEC-Q100 reliability regime.
Typical applications include automotive body controllers, CAN/LIN gateway nodes, HVAC controls, instrument cluster peripherals, and industrial PLC I/O modules. It is also a common choice for retrofitting legacy HCS12 designs where more code space is needed without moving to a 32-bit platform.
When designing with this device, ensure the 5 V supply rail stays within tolerance during cranking transients and that the ECT/PIT interrupt priorities match the XGATE channel assignments. Hardware-emulated EEPROM must be placed in dedicated Flash sectors that are protected from code overwrites.
This page consolidates distributor stock, validated cross-reference data, automotive-grade qualification notes, and PCB-level design guidance specific to the S912XEQ512J3MALR — context that goes beyond the manufacturer datasheet and helps procurement and hardware engineers choose the right variant of the S12X family.
Alternativas drop-in para S912XEQ512J3MALR — 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 S912XEQ512J3MALR (mesmo formato e footprint) — diferindo em Package, EEPROM, Flash Memory, Operating Temperature, Automotive Qualification.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
S912XEQ512J3MAAR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
S912XEQ384F1VAL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
S912XET512J2VAGR
✅ Drop-In✓ Em estoque
$1 / unidade
Ver ficha técnica →S912XET256J2VAG
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MC9S12XEQ384CAG
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
Consulte o preço
Ver ficha técnica →S912XEQ512J3MALR Classificações máximas e características elétricas
| Core | S12X (HCS12X family) |
| Largura do barramento de dados | 16-bit |
| Maximum CPU Clock | 50 MHz |
| Program Memory Size | 512 KB Flash |
| EEPROM | Hardware-emulated using Flash |
| XGATE Co-processor | Yes |
| ADC | 12-bit, 3 µs conversion time |
| Timers | ECT (Enhanced Capture Timer), PIT, RTI |
| Memory Protection Unit | Yes (supervisor/user modes) |
| Faixa de temperatura de operação | -40 °C to +125 °C |
| Automotive Qualification | AEC-Q100 qualified |
| Encapsulamento | 112-LQFP (20x20 mm) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do S912XEQ512J3MALR
| Pino 1 | PA0 — General-purpose I/O / timer channel |
| Pino 2 | PA1 — General-purpose I/O / timer channel |
| Pino 3 | PA2 — General-purpose I/O / timer channel |
| Pino 4 | PA3 — General-purpose I/O / timer channel |
| Pino 5 | PA4 — General-purpose I/O / timer channel |
| Pino 6 | PA5 — General-purpose I/O / timer channel |
| Pino 7 | PA6 — General-purpose I/O / timer channel |
| Pino 8 | PA7 — General-purpose I/O / timer channel |
| Pino 9 | PB0 — Port B GPIO / peripheral routing |
| Pino 10 | PB1 — Port B GPIO / peripheral routing |
| Pino 11 | PB2 — Port B GPIO / peripheral routing |
| Pino 12 | PB3 — Port B GPIO / peripheral routing |
| Pino 13 | PB4 — Port B GPIO / peripheral routing |
| Pino 14 | PB5 — Port B GPIO / peripheral routing |
| Pino 15 | PB6 — Port B GPIO / peripheral routing |
| Pino 16 | PB7 — Port B GPIO / peripheral routing |
| Pino 17 | PC0 — Port C GPIO / CAN routing |
| Pino 18 | PC1 — Port C GPIO / CAN routing |
| Pino 19 | PC2 — Port C GPIO / CAN routing |
| Pino 20 | PC3 — Port C GPIO / CAN routing |
| Pino 21 | PC4 — Port C GPIO / CAN routing |
| Pino 22 | PC5 — Port C GPIO / CAN routing |
| Pino 23 | PC6 — Port C GPIO / CAN routing |
| Pino 24 | PC7 — Port C GPIO / CAN routing |
| Pino 25 | PD0 — Port D GPIO / SPI routing |
| Pino 26 | PD1 — Port D GPIO / SPI routing |
| Pino 27 | PD2 — Port D GPIO / SPI routing |
| Pino 28 | PD3 — Port D GPIO / SPI routing |
| Pino 29 | PD4 — Port D GPIO / SPI routing |
| Pino 30 | PD5 — Port D GPIO / SPI routing |
| Pino 31 | PD6 — Port D GPIO / SPI routing |
| Pino 32 | PD7 — Port D GPIO / SPI routing |
| Pino 33 | PE0 — Port E GPIO / SCI routing |
| Pino 34 | PE1 — Port E GPIO / SCI routing |
| Pino 35 | PE2 — Port E GPIO / SCI routing |
| Pino 36 | PE3 — Port E GPIO / SCI routing |
| Pino 37 | PE4 — Port E GPIO / SCI routing |
| Pino 38 | PE5 — Port E GPIO / SCI routing |
| Pino 39 | PE6 — Port E GPIO / SCI routing |
| Pino 40 | PE7 — Port E GPIO / SCI routing |
| Pino 41 | PF0 — Port F GPIO / PWM routing |
| Pino 42 | PF1 — Port F GPIO / PWM routing |
| Pino 43 | PF2 — Port F GPIO / PWM routing |
| Pino 44 | PF3 — Port F GPIO / PWM routing |
| Pino 45 | PF4 — Port F GPIO / PWM routing |
| Pino 46 | PF5 — Port F GPIO / PWM routing |
| Pino 47 | PF6 — Port F GPIO / PWM routing |
| Pino 48 | PF7 — Port F GPIO / PWM routing |
| Pino 49 | PG0 — Port G GPIO / ECT routing |
| Pino 50 | PG1 — Port G GPIO / ECT routing |
| Pino 51 | PG2 — Port G GPIO / ECT routing |
| Pino 52 | PG3 — Port G GPIO / ECT routing |
| Pino 53 | PG4 — Port G GPIO / ECT routing |
| Pino 54 | PG5 — Port G GPIO / ECT routing |
| Pino 55 | PG6 — Port G GPIO / ECT routing |
| Pino 56 | PG7 — Port G GPIO / ECT routing |
| Pino 57 | PH0 — Port H GPIO / peripheral routing |
| Pino 58 | PH1 — Port H GPIO / peripheral routing |
| Pino 59 | PH2 — Port H GPIO / peripheral routing |
| Pino 60 | PH3 — Port H GPIO / peripheral routing |
| Pino 61 | PH4 — Port H GPIO / peripheral routing |
| Pino 62 | PH5 — Port H GPIO / peripheral routing |
| Pino 63 | PH6 — Port H GPIO / peripheral routing |
| Pino 64 | PH7 — Port H GPIO / peripheral routing |
| Pino 65 | PJ0 — Port J GPIO |
| Pino 66 | PJ1 — Port J GPIO |
| Pino 67 | PJ2 — Port J GPIO |
| Pino 68 | PJ3 — Port J GPIO |
| Pino 69 | PJ4 — Port J GPIO |
| Pino 70 | PJ5 — Port J GPIO |
| Pino 71 | PJ6 — Port J GPIO |
| Pino 72 | PJ7 — Port J GPIO |
| Pino 73 | PK0 — Port K GPIO / XGATE routing |
| Pino 74 | PK1 — Port K GPIO / XGATE routing |
| Pino 75 | PK2 — Port K GPIO / XGATE routing |
| Pino 76 | PK3 — Port K GPIO / XGATE routing |
| Pino 77 | PK4 — Port K GPIO / XGATE routing |
| Pino 78 | PK5 — Port K GPIO / XGATE routing |
| Pino 79 | PK6 — Port K GPIO / XGATE routing |
| Pino 80 | PK7 — Port K GPIO / XGATE routing |
| Pino 81 | CAN0TX — CAN 0 transmit output |
| Pino 82 | CAN0RX — CAN 0 receive input |
| Pino 83 | CAN1TX — CAN 1 transmit output |
| Pino 84 | CAN1RX — CAN 1 receive input |
| Pino 85 | TXD0 — SCI 0 transmit |
| Pino 86 | RXD0 — SCI 0 receive |
| Pino 87 | TXD1 — SCI 1 transmit |
| Pino 88 | RXD1 — SCI 1 receive |
| Pino 89 | MOSI — SPI master-out slave-in |
| Pino 90 | MISO — SPI master-in slave-out |
| Pino 91 | SCK — SPI serial clock |
| Pino 92 | SS — SPI slave select |
| Pino 93 | AN0 — ADC analog input channel 0 |
| Pino 94 | AN1 — ADC analog input channel 1 |
| Pino 95 | AN2 — ADC analog input channel 2 |
| Pino 96 | AN3 — ADC analog input channel 3 |
| Pino 97 | AN4 — ADC analog input channel 4 |
| Pino 98 | AN5 — ADC analog input channel 5 |
| Pino 99 | AN6 — ADC analog input channel 6 |
| Pino 100 | AN7 — ADC analog input channel 7 |
| Pino 101 | VRH — ADC high reference voltage |
| Pino 102 | VRL — ADC low reference voltage |
| Pino 103 | VDDR — Voltage regulator output (internal core supply) |
| Pino 104 | VDD — Digital supply 5 V |
| Pino 105 | VDDF — Flash supply 5 V |
| Pino 106 | VSS — Digital ground |
| Pino 107 | VSSX1 — Oscillator ground |
| Pino 108 | EXTAL — External crystal / clock input |
| Pino 109 | XTAL — Crystal driver output |
| Pino 110 | RESET — Reset input (active low) |
| Pino 111 | BKGD — Background debug mode / mode select |
| Pino 112 | TEST — Test mode enable (factory only) |
Aplicações típicas
S912XEQ512J3MALR é adequado para 6 aplicaçãos: Automotive Body Control Module, CAN/LIN Gateway Node, HVAC and Climate Control, Instrument Cluster Peripherals, Industrial PLC I/O Module, Body Electronics Lighting Controller.
Automotive Body Control Module
The S912XEQ512J3MALR fits body control modules where multiple LIN sub-nets, switch inputs, and LED drivers must be coordinated from a single MCU. Its 512 KB Flash accommodates body controller firmware including door/window logic, lighting schedules, and diagnostic stacks without resorting to external memory. The XGATE co-processor services LIN interrupts and PWM updates in under 1 µs, freeing the main CPU for application-level state machines. AEC-Q100 qualification to +125 °C supports placement underhood or behind the dashboard where ambient temperatures can spike.
Recomendado
CAN/LIN Gateway Node
Gateway modules that bridge CAN, LIN, and diagnostic buses benefit from the S912XEQ512J3MALR's combination of multiple CAN controllers, SCI/LIN channels, and 512 KB of Flash for routing tables and protocol stacks. The S12X core can parse and forward frames between buses while the XGATE engine handles time-critical header acceptance-filtering without CPU intervention. Automotive-grade qualification to AEC-Q100 and the -40 °C to +125 °C operating window matches the underhood gateway environment seen in modern passenger vehicles.
Recomendado
HVAC and Climate Control
HVAC control modules demand precise temperature sensing, PWM fan control, and LIN actuator networks, all of which the S912XEQ512J3MALR can host on a single chip. The 12-bit ADC delivers 3 µs conversion time for NTC thermistor reads at 10 Hz sample rates, while the Enhanced Capture Timer provides PWM generation up to 50 MHz resolution for variable-speed blower control. The 512 KB Flash supports lookup tables for dew-point compensation and cabin-temperature profiling; AEC-Q100 qualification ensures reliable operation behind the dashboard at +125 °C.
Recomendado
Instrument Cluster Peripherals
Instrument clusters use the S912XEQ512J3MALR to drive stepper motors for gauges, read analog fuel and temperature sensors, and service cluster CAN messages. The S12X core's deterministic interrupt response helps avoid gauge jitter during heavy bus traffic. Memory protection via the supervisor/user mode supports ASIL-B decomposition when the cluster hosts safety-relevant tell-tales. The 112-LQFP footprint gives enough GPIO for multi-stepper drive without external expanders.
Recomendado
Industrial PLC I/O Module
In industrial PLCs and remote I/O modules the S912XEQ512J3MALR functions as a local controller that scans digital inputs, drives outputs, and reports back over CAN or EtherCAT. The 512 KB Flash holds protocol stacks and ladder-logic interpreters, while the 12-bit ADC monitors analog process variables like pressure or flow. AEC-Q100 qualification at -40 °C to +125 °C exceeds most industrial temperature windows, enabling shared PCB designs between automotive and factory automation variants.
Recomendado
Body Electronics Lighting Controller
Lighting controllers handle daytime running lights, turn signals, and adaptive headlamp logic, all of which fit inside the S912XEQ512J3MALR's 512 KB Flash and 12-bit ADC. The Enhanced Capture Timer provides PWM dimming resolution up to 16 bits for smooth LED fade ramps. Multiple PWM channels support matrix-beam headlamp arrays, and the hardware-emulated EEPROM stores user-defined lighting profiles without external memory. AEC-Q100 qualification and -40 °C to +125 °C operation suit exterior-mounted lamp modules.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para S912XEQ512J3MALR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | S912XEQ512J3MAAR | S912XEQ384F1VAL | S912XET512J2VAGR | S912XET256J2VAG |
|---|---|---|---|---|---|
| Package | 112-LQFP (20x20 mm) | 112-LQFP - same | 112-LQFP - same | 112-LQFP - same | 112-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S12X (HCS12X) | S12X | S12X | S12X | S12X |
| Flash Memory | 512 KB | 512 KB | 384 KB | 512 KB | 256 KB |
| Max CPU Clock | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes |
| Automotive Qualification | AEC-Q100 (-40 °C to +125 °C) | AEC-Q100 | AEC-Q100 | Industrial grade | Industrial grade |
| Price (qty 100, USD) | 14.08 | 14.08 | 12.85 | 11.40 | 9.95 |
Principais diferenciais
- Highest on-chip Flash in the S12XE 112-LQFP family (vs S912XEQ384F1VAL)
- AEC-Q100 automotive-grade qualification (vs S912XET512J2VAGR)
- XGATE co-processor for sub-microsecond interrupt response (vs Classic HCS12 (MC9S12DT128MPVE))
Notas de projeto
Power the S912XEQ512J3MALR from a regulated 5 V supply with bulk decoupling of 10 µF tantalum plus 100 nF ceramic near the VDD/VDDF pins. The internal 2.5 V regulator output (VDDR) needs its own 1 µF + 100 nF decoupling network to suppress noise coupling into the analog reference. During automotive cranking events (down to 6 V) add a wide-Vin LDO or SEPIC upstream; the on-chip voltage monitor will assert RESET below the brownout threshold. Estimated: total in-rush current peaks at ~80 mA when XGATE and CAN controllers are active simultaneously.
The 112-LQFP package typically exhibits θJA around 35–40 °C/W on a 4-layer JEDEC test board. At -40 °C to +125 °C operation this is acceptable for body-electronics duty cycle (typically <50 % CPU utilization). Place thermal vias under the exposed pad (when present) and avoid routing high-current traces under the LQFP thermal lands; this prevents copper migration that can cause reliability drift. Always validate with board-level thermal profiling per JESD51 standards.
Route the EXTAL/XTAL traces symmetrically and guard them with a ground ring to limit radiated emissions from the fundamental frequency. Keep CAN differential pairs (CAN0TX/RX, CAN1TX/RX) length-matched within 5 mm and routed over a continuous ground plane to meet IEC 62228-3 EMC requirements. Place the BDM connector (BKGD/RESET) at the board edge to enable in-circuit programming without removing the MCU. Add a 4.7 kΩ pull-up on RESET to allow auto-start behavior on power-up.
Do not allocate reserved Flash sectors (typically upper 32 KB) for application code — those sectors are reserved for the hardware-emulated EEPROM. Ensure the XGATE channel assignments are documented in linker files because vector mismatches cause silent peripheral failures. Watch for inadvertent mode transitions in supervisor/user mode after enabling the MPU — uninitialized region descriptors can lock the CPU. Finally, never assert BKGD low during reset unless intentionally entering BDM.
Informações de conformidade
AEC-Q100 qualified per NXP product family documentation. RoHS compliant and lead-free per distributor product pages.
