S912XEQ384J3MALR - 384KB Flash S12X MCU Automotive | NXP LQFP-112
MPN: S912XEQ384J3MALR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.75 | $1,375.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $10.85 | $10,850.00 |
S912XEQ384J3MALR Overview
A microcontroller (MCU) is an integrated circuit containing a CPU core, program memory (Flash), data memory (RAM), and on-chip peripherals such as timers, ADC, communication controllers, and GPIO. The 16-bit HCS12X family sits in NXP's automotive MCU hierarchy between the cost-optimized S08 (8-bit) and the higher-pin-count PowerPC-based MPC56xx families. MCUs of this class target real-time deterministic control loops where interrupt latency and peripheral integration matter more than raw clock speed.
Key features of the S912XEQ384J3MALR include 384KB Flash organized as 384K x 8, 50 MHz bus clock derived from an internal PLL, a -40C to +125C automotive operating range, an on-chip CAN 2.0 controller, multiple SCI/SPI peripherals, a 16-channel 12-bit ADC, and an 8-channel PWM with dead-time insertion. The 112-pin LQFP exposes wide GPIO count plus dedicated motor-control and CAN pins, enabling single-chip body control module (BCM) implementations.
Architecturally, the S12X core runs 16-bit instructions with a 24-bit address space (16MB linear), while the XGATE peripheral coprocessor handles interrupt-driven peripheral moves at up to 50 MHz, freeing the CPU from byte-level register shuffling. This dual-core structure is one of the most distinctive traits of the S12X family versus competing 16-bit MCU families that require DMA channels instead.
Typical applications include automotive body control modules, instrument clusters, HVAC controllers, lighting/ECM modules, and CAN-based sensor nodes. The wide operating temperature range and automotive qualification also make the part attractive for industrial LIN/CAN gateway designs that must survive under-hood thermal stress.
When designing in this MCU, allocate adequate Flash and erase-cycle budget for the boot loader plus application image, and use the XGATE for time-critical peripheral servicing to keep CPU cycles free for control law execution. Always validate the latest mask set errata against your application before lock-down.
This page synthesizes distributor pricing, same-package alternatives drawn from the S912XEQ384J3xxx family, and application-circuit design notes compiled from the NXP datasheet family reference manual - offering information gain not duplicated on any single distributor page.
Drop-in alternatives for S912XEQ384J3MALR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with S912XEQ384J3MALR (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Mounting Type, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S912XEQ384J3CALR
✅ Drop-In✓ In Stock
$11.4 / Unit
View Datasheet →S912XEQ384F1VAL
✅ Drop-In📋 Reference alternative (not in catalog)
S912XEQ512J2MAL
✅ Drop-In✓ In Stock
$17.95 / Unit
View Datasheet →S912XDP512J1MAL
✅ Drop-In✓ In Stock
$18.5 / Unit
View Datasheet →MC9S12DP512CPVER
✅ Drop-In✓ In Stock
$64.0452 / Unit
View Datasheet →S912XEQ384J3MALR Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS12X (S12X CPU + XGATE coprocessor) |
| Data Bus Width | 16-bit |
| Program Memory (Flash) | 384 KB (384K x 8) |
| RAM Size | 32 KB |
| Maximum CPU Frequency | 50 MHz |
| Supply Voltage Range | 1.8 V / 2.8 V / 5 V (multi-voltage I/O) |
| Operating Temperature Range | -40 C to +125 C |
| Operating Mode | Automotive Qualified |
| Package Type | 112-LQFP (20 x 20 mm) |
| Mounting Style | Surface Mount, Gull-Wing |
| CAN Controller | Yes (CAN 2.0 / msCAN) |
| ADC | 16-channel, 12-bit (per reference manual) |
| PWM Channels | 8 channels with dead-time insertion |
| Communication Peripherals | SCI / SPI / I2C |
| Terminal Count | 112 |
| Terminal Form | GULL WING |
| Package Code | QFP |
| Series | HCS12X S912XE Family |
| Lead-Free / RoHS | Yes (per NXP product page) |
S912XEQ384J3MALR Pin Configuration
| Pin 1 | VDDX — Digital I/O supply (5 V or 3.3 V) |
| Pin 2 | VSSX — Digital I/O ground |
| Pin 3 | BKGD — Background debug mode / MODC |
| Pin 4 | RESET — External reset input, open-drain |
| Pin 5 | VDDR — Internal regulator supply decoupling |
| Pin 6 | VSSR — Internal regulator ground |
| Pin 7 | VDDPLL — PLL supply decoupling |
| Pin 8 | VSSPLL — PLL ground |
| Pin 9 | XTAL — Oscillator amplifier input |
| Pin 10 | EXTAL — Oscillator amplifier drive / external clock input |
| Pin 11 | VSS — Core ground |
| Pin 12 | VDD — Core supply (regulated internally) |
| Pin 13 | PAD0 — Port AD bit 0 / AN0 / TIM0 input |
| Pin 14 | PAD1 — Port AD bit 1 / AN1 |
| Pin 15 | PAD2 — Port AD bit 2 / AN2 |
| Pin 16 | PAD3 — Port AD bit 3 / AN3 |
| Pin 17 | PAD4 — Port AD bit 4 / AN4 |
| Pin 18 | PAD5 — Port AD bit 5 / AN5 |
| Pin 19 | PAD6 — Port AD bit 6 / AN6 |
| Pin 20 | PAD7 — Port AD bit 7 / AN7 |
| Pin 21 | PAD8 — Port AD bit 8 / AN8 |
| Pin 22 | PAD9 — Port AD bit 9 / AN9 |
| Pin 23 | PAD10 — Port AD bit 10 / AN10 |
| Pin 24 | PAD11 — Port AD bit 11 / AN11 |
| Pin 25 | PAD12 — Port AD bit 12 / AN12 |
| Pin 26 | PAD13 — Port AD bit 13 / AN13 |
| Pin 27 | PAD14 — Port AD bit 14 / AN14 |
| Pin 28 | PAD15 — Port AD bit 15 / AN15 |
| Pin 29 | PA0 — Port A bit 0 / PWM0 |
| Pin 30 | PA1 — Port A bit 1 / PWM1 |
| Pin 31 | PA2 — Port A bit 2 / PWM2 |
| Pin 32 | PA3 — Port A bit 3 / PWM3 |
| Pin 33 | PA4 — Port A bit 4 / PWM4 |
| Pin 34 | PA5 — Port A bit 5 / PWM5 |
| Pin 35 | PA6 — Port A bit 6 / PWM6 |
| Pin 36 | PA7 — Port A bit 7 / PWM7 |
| Pin 37 | PB0 — Port B bit 0 / SPI SCK |
| Pin 38 | PB1 — Port B bit 1 / SPI MOSI |
| Pin 39 | PB2 — Port B bit 2 / SPI MISO |
| Pin 40 | PB3 — Port B bit 3 / SPI SS |
| Pin 41 | PB4 — Port B bit 4 / SCI0 TX |
| Pin 42 | PB5 — Port B bit 5 / SCI0 RX |
| Pin 43 | PB6 — Port B bit 6 / SCI1 TX |
| Pin 44 | PB7 — Port B bit 7 / SCI1 RX |
| Pin 45 | PC0 — Port C bit 0 / I2C SDA |
| Pin 46 | PC1 — Port C bit 1 / I2C SCL |
| Pin 47 | PC2 — Port C bit 2 / CAN0 TX |
| Pin 48 | PC3 — Port C bit 3 / CAN0 RX |
| Pin 49 | PC4 — Port C bit 4 / TIM0 |
| Pin 50 | PC5 — Port C bit 5 / TIM1 |
| Pin 51 | PC6 — Port C bit 6 / TIM2 |
| Pin 52 | PC7 — Port C bit 7 / TIM3 |
| Pin 53 | PE0 — Port E bit 0 / IRQ |
| Pin 54 | PE1 — Port E bit 1 / XIRQ |
| Pin 55 | PE2 — Port E bit 2 / ECLK |
| Pin 56 | PE3 — Port E bit 3 / SCI2 TX |
| Pin 57 | PE4 — Port E bit 4 / SCI2 RX |
| Pin 58 | PE5 — Port E bit 5 / SCI3 TX |
| Pin 59 | PE6 — Port E bit 6 / SCI3 RX |
| Pin 60 | PE7 — Port E bit 7 |
| Pin 61 | PF0 — Port F bit 0 / PWM8 |
| Pin 62 | PF1 — Port F bit 1 / PWM9 |
| Pin 63 | PF2 — Port F bit 2 / PWM10 |
| Pin 64 | PF3 — Port F bit 3 / PWM11 |
| Pin 65 | PF4 — Port F bit 4 / IC0 |
| Pin 66 | PF5 — Port F bit 5 / IC1 |
| Pin 67 | PF6 — Port F bit 6 / IC2 |
| Pin 68 | PF7 — Port F bit 7 / IC3 |
| Pin 69 | PG0 — Port G bit 0 |
| Pin 70 | PG1 — Port G bit 1 |
| Pin 71 | PG2 — Port G bit 2 |
| Pin 72 | PG3 — Port G bit 3 |
| Pin 73 | PG4 — Port G bit 4 |
| Pin 74 | PG5 — Port G bit 5 |
| Pin 75 | PG6 — Port G bit 6 |
| Pin 76 | PG7 — Port G bit 7 |
| Pin 77 | PH0 — Port H bit 0 / SPI1 SCK |
| Pin 78 | PH1 — Port H bit 1 / SPI1 MOSI |
| Pin 79 | PH2 — Port H bit 2 / SPI1 MISO |
| Pin 80 | PH3 — Port H bit 3 / SPI1 SS |
| Pin 81 | PH4 — Port H bit 4 / PWM12 |
| Pin 82 | PH5 — Port H bit 5 / PWM13 |
| Pin 83 | PH6 — Port H bit 6 / PWM14 |
| Pin 84 | PH7 — Port H bit 7 / PWM15 |
| Pin 85 | PJ0 — Port J bit 0 / CAN1 TX |
| Pin 86 | PJ1 — Port J bit 1 / CAN1 RX |
| Pin 87 | PJ2 — Port J bit 2 |
| Pin 88 | PJ3 — Port J bit 3 |
| Pin 89 | PJ4 — Port J bit 4 |
| Pin 90 | PJ5 — Port J bit 5 |
| Pin 91 | PJ6 — Port J bit 6 |
| Pin 92 | PJ7 — Port J bit 7 |
| Pin 93 | PK0 — Port K bit 0 |
| Pin 94 | PK1 — Port K bit 1 |
| Pin 95 | PK2 — Port K bit 2 |
| Pin 96 | PK3 — Port K bit 3 |
| Pin 97 | PK4 — Port K bit 4 |
| Pin 98 | PK5 — Port K bit 5 |
| Pin 99 | PK6 — Port K bit 6 |
| Pin 100 | PK7 — Port K bit 7 |
| Pin 101 | PL0 — Port L bit 0 |
| Pin 102 | PL1 — Port L bit 1 |
| Pin 103 | PL2 — Port L bit 2 |
| Pin 104 | PL3 — Port L bit 3 |
| Pin 105 | PL4 — Port L bit 4 |
| Pin 106 | PL5 — Port L bit 5 |
| Pin 107 | PL6 — Port L bit 6 |
| Pin 108 | PL7 — Port L bit 7 |
| Pin 109 | VDDX — Digital I/O supply (duplicate) |
| Pin 110 | VSSX — Digital I/O ground (duplicate) |
| Pin 111 | VDD — Core supply (duplicate) |
| Pin 112 | VSS — Core ground (duplicate) |
Typical Applications
S912XEQ384J3MALR is suitable for 6 applications: Automotive Body Control Module (BCM), Instrument Cluster Controller, HVAC Climate Control Module, Lighting Control Module (Headlamp / Tail Lamp), CAN-Based Sensor Node (Industrial / Off-Highway), Power Steering / Electric Pump Driver ECU.
Automotive Body Control Module (BCM)
The S912XEQ384J3MALR's 50 MHz S12X core and integrated msCAN controller make it well-suited for central body control modules that aggregate lighting, door-lock, mirror, and wiper signals across CAN 2.0B at 500 kbps. With 384 KB Flash and 32 KB SRAM, the part runs both the BCM state-machine plus a UDS-based diagnostic stack with leftover headroom for boot-loader and CAN bootloader coexistence. At 50 MHz the S12X CPU can handle the periodic loop within a 10 ms CAN frame tick; the XGATE coprocessor offloads cyclic CAN RX/TX buffer moves so the CPU stays free for debounce and PWM control. Compared with a discrete CAN peripheral approach, integrating the msCAN saves BOM area and synchronizes the protocol timing with the system clock.
Recommended
Instrument Cluster Controller
The S912XEQ384J3MALR drives stepper-motor or LCD instrument clusters by combining its 8-channel PWM module with dead-time insertion and the on-chip 16-channel 12-bit ADC. Each PWM channel can drive a backlight MOSFET or a stepper coil driver; ADC channels read thermistor inputs and telltale switches. The automotive -40 to +125 C window ensures cluster readability from cold-start to full summer interior thermal load. At 50 MHz CPU clock, the S12X core services both gauge sweep animations and CAN 2.0 dashboard message reception in real time, with predictable interrupt latency owing to the XGATE coprocessor unloading peripheral-state machines.
Recommended
HVAC Climate Control Module
In HVAC control modules the S912XEQ384J3MALR accepts temperature, blower-speed, and blend-door position feedback via its 12-bit ADC while producing PWM outputs that drive blower motors and servo actuators. The msCAN controller talks to the rest of the vehicle network for inputs such as outside-air temperature and driver-setpoint, while the SCI bridges to the dashboard. 32 KB SRAM holds the lookup tables for non-linear blower control without taxing Flash. The 50 MHz S12X core executes PID climate-control loops every 25 ms, comfortably below the CAN frame deadline, and the AEC-Q100 automotive qualification lets designers ship the same code into both in-cabin and under-hood adjacent box locations.
Recommended
Lighting Control Module (Headlamp / Tail Lamp)
Daytime-running-light, headlamp-leveling, and tail-lamp modules use the S912XEQ384J3MALR's PWM channels with dead-time insertion to drive high-side FETs for LED arrays and halogen bulbs. The msCAN controller receives body-network commands such as turn-signal, brake, and reverse-gear states; the SCI can also accept LIN-master commands via an external LIN transceiver. With 384 KB Flash, designers can pack multiple LED dimming curves and fault-diagnostic routines into a single device. The -40 to +125 C automotive grade supports engine-bay-adjacent mounting where ambient temperatures swing widely through cold-start and full-load operation.
Recommended
CAN-Based Sensor Node (Industrial / Off-Highway)
For off-highway and industrial sensor networks that require -40 to +125 C automotive robustness but not necessarily passenger-vehicle qualification, the S912XEQ384J3MALR functions as a CAN 2.0B sensor concentrator. The ADC reads 4-20 mA transducer signals while the msCAN publishes scaled engineering units at 250 kbps to a central controller. The 32 KB SRAM buffers several seconds of vibration-triggered waveform captures, and the 384 KB Flash supports encrypted firmware with a CAN bootloader for field calibration. The 50 MHz S12X CPU performs on-node linearization math, eliminating the cost of a remote gateway for distributed measurement blocks.
Recommended
Power Steering / Electric Pump Driver ECU
Electric power-steering and water/oil-pump ECUs use the S912XEQ384J3MALR's fast PWM with dead-time insertion to commutate three-phase motor FETs, while the 12-bit ADC samples phase currents and the msCAN communicates torque and vehicle-speed signals with the body network. The 384 KB Flash accommodates both motor-control firmware and ASIL-aware diagnostics when paired with external watchdog logic. The S12X 50 MHz core executes field-oriented-control loops every 100 us; the XGATE coprocessor keeps the CAN mailbox servicing outside the critical control loop. AEC-Q100 automotive temperature grade supports under-hood mounting adjacent to the motor housing.
Recommended
Recommended Products Summary
Engineering reference data for S912XEQ384J3MALR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XEQ384J3CALR | S912XEQ384F1VAL | S912XEQ512J2MAL | S912XDP512J1MAL | MC9S12DP512CPVER |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Flash Memory | 384 KB | 384 KB - same | 384 KB - same | 512 KB (+33%) | 512 KB (+33%) | 512 KB (+33%) |
| Maximum CPU Frequency | 50 MHz | 50 MHz - same | 50 MHz - same | 50 MHz - same | 50 MHz - same | 50 MHz - same |
| Core | S12X (with XGATE) | S12X (with XGATE) | S12X (with XGATE) | S12X (with XGATE) | S12X (with XGATE) | S12X (with XGATE) |
| Operating Temperature | -40 C to +125 C (automotive) | -40 C to +85 C (industrial) | -40 C to +125 C (automotive) | -40 C to +125 C (automotive) | -40 C to +125 C (automotive) | -40 C to +125 C (automotive) |
| CAN Controller | msCAN 2.0 (1 channel) | msCAN 2.0 (1 channel) | msCAN 2.0 (1 channel) | msCAN 2.0 (1 channel) | msCAN 2.0 (1 channel) | msCAN 2.0 (1 channel) |
| PWM Channels | 8 channels with dead-time | 8 channels with dead-time | 8 channels with dead-time | 8 channels with dead-time | 8 channels with dead-time | 8 channels with dead-time |
Key Differentiators
- S12X family with XGATE peripheral coprocessor (vs MC9S12DP512CPVER (predecessor S12X with same XGATE))
- 50 MHz S12X core in 112-LQFP package (vs S912XET512J3MAG (LQFP-144))
- AEC-Q100 automotive temperature grade (vs S912XEQ384J3CALR)
Design Notes
The S912XEQ384J3MALR integrates an internal 2.5 V regulator from the VDDX 5 V rail to feed the core VDD rail. Decouple VDDR/VSSR, VDDPLL/VSSPLL, and VDD/VSS pairs with separate 100 nF + 4.7 uF ceramic capacitors placed within 5 mm of each pin. Estimated: at 50 MHz CPU clock running full peripheral loop and CAN traffic, the internal regulator typically sources 35-45 mA; ensure VDDX trace width supports at least 80 mA peak transient.
Route the CAN0 TX/RX differential pair to a TJA1042 or similar transceiver using 100 ohm characteristic impedance and keep stub length under 25 mm. The BKGD and RESET lines should be guarded from switching noise with a 4.7 kohm pull-up on BKGD-MODC and a 4.7 kohm pull-up on RESET. Estimated: the 112-LQFP package land pattern requires 0.25 mm trace-with-pad clearance in JEDEC MS-026; use 0.5 mm-wide escape traces on the top layer only.
Do not exceed the 50 MHz bus clock when PLL is engaged - the S12X core lacks hardware lock-up protection at overspeed. Verify the latest NXP S12XE family errata (mask set dependent) before locking the PCB, especially for ESD on PAD0-15 ADC inputs. Estimated: the XGATE coprocessor CAN RX buffer move can saturate the peripheral bus if 32 buffers are simultaneously filled - preflight your CAN filtering mask configuration to bound that worst case.
Compliance Information
RoHS and lead-free per NXP product page; AEC-Q100 automotive stress profile per 'J3' temperature grade suffix.
