S912XEQ384J2MAL - 16-bit S12XE MCU 384KB Flash 50MHz | NXP
MPN: S912XEQ384J2MAL ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.95 | $1,395.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $10.95 | $10,950.00 |
S912XEQ384J2MAL Overview
An automotive MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), analog and digital peripherals, and communication interfaces. Within the broader semiconductor taxonomy, an MCU belongs to the embedded processor category, sits below microprocessors in integration level, and above discrete logic in functional density. The S12X core inside the S912XEQ384 extends the classic HCS12 instruction set with a powerful XGATE co-processor that offloads interrupt servicing and peripheral data movement, allowing the main CPU to focus on application logic.
Key features include a 50 MHz S12X CPU with XGATE co-processor for virtual peripheral acceleration, 384 KB on-chip Flash with hardware-emulated EEPROM support, 24 KB SRAM with error correction, and a 12-bit ADC with 3 µs conversion time. The device integrates two SCI (UART) channels, two SPI, two IIC (I²C), up to five CAN 2.0 A/B controllers (msCAN), an 8-channel Enhanced Capture Timer, a Periodic Interrupt Timer, a Real-Time Interrupt block, and a 16-bit Pulse Width Modulation module with up to 8 channels.
The architecture provides hardware memory protection through a Memory Protection Unit (MPU) supporting supervisor and user modes, which is essential for automotive systems running mixed-ASIL software. Background debug mode (BDM) and a single-wire on-chip debug interface simplify in-circuit emulation and production programming, while the integrated voltage regulator supports a wide 3.15 V to 5.5 V supply range, typical for 12 V automotive battery systems with cranking transients.
Typical applications include automotive body controllers, HVAC modules, instrument clusters, industrial automation PLCs, and CAN/J1939 communication nodes. Designers select this part when deterministic interrupt response, robust EMC, and multi-CAN connectivity matter more than raw MHz.
When designing in, place 100 nF decoupling capacitors within 5 mm of every VDD/VSS pair and keep the reset line short to minimize noise pickup during cranking pulses. Above 4.5 V supply and 25 °C ambient, no thermal derating is needed; below –20 °C the internal regulator ripple remains well within spec.
This page synthesizes NXP product information, distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for S912XEQ384J2MAL — 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 S912XEQ384J2MAL (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Mounting Type, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S912XEQ384J3MAL
✅ Drop-In📋 Reference alternative (not in catalog)
S912XEQ384J3CALR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$11.4 / Unit
View Datasheet →S912XEQ512J2MAL
✅ Drop-In✓ In Stock
$17.95 / Unit
View Datasheet →MC9S12XEQ384MAL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
S912XEQ512J2MALR
✅ Drop-In✓ In Stock
$14.5 / Unit
View Datasheet →S912XET512J3MAG
✅ Drop-In✓ In Stock
$16.4 / Unit
View Datasheet →S912XEQ384J2MAL Maximum Ratings & Electrical Characteristics
| Core Architecture | S12XE (16-bit HCS12 extended) with XGATE co-processor |
| CPU Clock Speed | 50 MHz (bus speed) |
| Program Flash | 384 KB |
| SRAM | 24 KB |
| EEPROM / Data Flash | 4 KB (hardware-emulated EEPROM) |
| ADC | 12-bit, 3 us conversion time |
| SCI (UART) Channels | 2 |
| SPI Channels | 2 |
| IIC (I²C) Channels | 2 |
| CAN (msCAN) Controllers | Up to 5 (CAN 2.0 A/B) |
| Timers | ECT, PIT, RTI, PWM (8-channel) |
| Memory Protection | MPU with supervisor/user modes |
| Supply Voltage | 3.15 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (automotive grade) |
| Package | LQFP-112 (20 mm x 20 mm, gull wing) |
| Temperature Grade | Automotive |
S912XEQ384J2MAL Pin Configuration
| Pin 1 | ETXD0 — msCAN0 transmit data |
| Pin 2 | ERXD0 — msCAN0 receive data |
| Pin 3 | XCLKS — PLL clock mode select |
| Pin 4 | TEST — Test mode enable (tie to VSS in normal operation) |
| Pin 5 | VDDR — Internal regulator supply |
| Pin 6 | VDDPLL — PLL supply |
| Pin 7 | VSSPLL — PLL ground |
| Pin 8 | VDDX1 — I/O supply (3.15 V - 5.5 V) |
| Pin 9 | VDDX2 — I/O supply 2 |
| Pin 10 | VDDR — Internal regulator supply |
| Pin 11 | RESET — Active-low reset input |
| Pin 12 | VSS — Digital ground |
| Pin 13 | BKGD — Background Debug Mode (BDM) data |
| Pin 14 | MODC — Mode select for BDM/PE |
| Pin 15 | PWM0 — Pulse Width Modulation channel 0 |
| Pin 16 | PWM1 — PWM channel 1 |
| Pin 17 | PWM2 — PWM channel 2 |
| Pin 18 | PWM3 — PWM channel 3 |
| Pin 19 | PWM4 — PWM channel 4 |
| Pin 20 | PWM5 — PWM channel 5 |
| Pin 21 | PWM6 — PWM channel 6 |
| Pin 22 | PWM7 — PWM channel 7 |
| Pin 23 | PAD0 — Port AD bit 0 (ADC/EAM) |
| Pin 24 | PAD1 — Port AD bit 1 |
| Pin 25 | PAD2 — Port AD bit 2 |
| Pin 26 | PAD3 — Port AD bit 3 |
| Pin 27 | PAD4 — Port AD bit 4 |
| Pin 28 | PAD5 — Port AD bit 5 |
| Pin 29 | PAD6 — Port AD bit 6 |
| Pin 30 | PAD7 — Port AD bit 7 |
| Pin 31 | PAD8 — Port AD bit 8 |
| Pin 32 | PAD9 — Port AD bit 9 |
| Pin 33 | PAD10 — Port AD bit 10 |
| Pin 34 | PAD11 — Port AD bit 11 |
| Pin 35 | PAD12 — Port AD bit 12 |
| Pin 36 | PAD13 — Port AD bit 13 |
| Pin 37 | PAD14 — Port AD bit 14 |
| Pin 38 | PAD15 — Port AD bit 15 |
| Pin 39 | VSS — Digital ground |
| Pin 40 | VDDA — Analog supply (ADC reference) |
| Pin 41 | VREF — ADC voltage reference |
| Pin 42 | AN0 — Analog input 0 (shared with PAD0) |
| Pin 43 | AN1 — Analog input 1 |
| Pin 44 | AN2 — Analog input 2 |
| Pin 45 | AN3 — Analog input 3 |
| Pin 46 | AN4 — Analog input 4 |
| Pin 47 | AN5 — Analog input 5 |
| Pin 48 | AN6 — Analog input 6 |
| Pin 49 | AN7 — Analog input 7 |
| Pin 50 | ETXD1 — msCAN1 transmit data |
| Pin 51 | ERXD1 — msCAN1 receive data |
| Pin 52 | ETXD2 — msCAN2 transmit data |
| Pin 53 | ERXD2 — msCAN2 receive data |
| Pin 54 | ETXD3 — msCAN3 transmit data |
| Pin 55 | ERXD3 — msCAN3 receive data |
| Pin 56 | ETXD4 — msCAN4 transmit data |
| Pin 57 | ERXD4 — msCAN4 receive data |
| Pin 58 | VSS — Digital ground |
| Pin 59 | VDD — Internal logic supply |
| Pin 60 | PS0 — Port S bit 0 (SPI/IIC) |
| Pin 61 | PS1 — Port S bit 1 |
| Pin 62 | PS2 — Port S bit 2 |
| Pin 63 | PS3 — Port S bit 3 |
| Pin 64 | PS4 — Port S bit 4 |
| Pin 65 | PS5 — Port S bit 5 |
| Pin 66 | PS6 — Port S bit 6 |
| Pin 67 | PS7 — Port S bit 7 |
| Pin 68 | PE0 — Port E bit 0 (SCI/ECT) |
| Pin 69 | PE1 — Port E bit 1 |
| Pin 70 | PE2 — Port E bit 2 |
| Pin 71 | PE3 — Port E bit 3 |
| Pin 72 | PE4 — Port E bit 4 |
| Pin 73 | PE5 — Port E bit 5 |
| Pin 74 | PE6 — Port E bit 6 |
| Pin 75 | PE7 — Port E bit 7 |
| Pin 76 | PJ0 — Port J bit 0 |
| Pin 77 | PJ1 — Port J bit 1 |
| Pin 78 | PJ2 — Port J bit 2 |
| Pin 79 | PJ3 — Port J bit 3 |
| Pin 80 | PJ4 — Port J bit 4 |
| Pin 81 | PJ5 — Port J bit 5 |
| Pin 82 | PJ6 — Port J bit 6 |
| Pin 83 | PJ7 — Port J bit 7 |
| Pin 84 | PK0 — Port K bit 0 |
| Pin 85 | PK1 — Port K bit 1 |
| Pin 86 | PK2 — Port K bit 2 |
| Pin 87 | PK3 — Port K bit 3 |
| Pin 88 | PK4 — Port K bit 4 |
| Pin 89 | PK5 — Port K bit 5 |
| Pin 90 | PK6 — Port K bit 6 |
| Pin 91 | PK7 — Port K bit 7 |
| Pin 92 | PA0 — Port A bit 0 |
| Pin 93 | PA1 — Port A bit 1 |
| Pin 94 | PA2 — Port A bit 2 |
| Pin 95 | PA3 — Port A bit 3 |
| Pin 96 | PA4 — Port A bit 4 |
| Pin 97 | PA5 — Port A bit 5 |
| Pin 98 | PA6 — Port A bit 6 |
| Pin 99 | PA7 — Port A bit 7 |
| Pin 100 | PB0 — Port B bit 0 |
| Pin 101 | PB1 — Port B bit 1 |
| Pin 102 | PB2 — Port B bit 2 |
| Pin 103 | PB3 — Port B bit 3 |
| Pin 104 | PB4 — Port B bit 4 |
| Pin 105 | PB5 — Port B bit 5 |
| Pin 106 | PB6 — Port B bit 6 |
| Pin 107 | PB7 — Port B bit 7 |
| Pin 108 | PP0 — Port P bit 0 (XGATE IRQ) |
| Pin 109 | PP1 — Port P bit 1 |
| Pin 110 | VDDX3 — I/O supply 3 |
| Pin 111 | VSS — Digital ground |
| Pin 112 | NC — Not connected (per datasheet) |
Typical Applications
S912XEQ384J2MAL is suitable for 6 applications: Automotive Body Control Module (BCM), Automotive HVAC Control Module, Industrial CAN/Modbus Gateway, Automotive Instrument Cluster, Chassis / Powertrain Sensor Node, Industrial PLC Digital I/O Module.
Automotive Body Control Module (BCM)
The S912XEQ384J2MAL is a strong fit for body control modules that orchestrate lighting, wipers, door locks, and accessory loads because its five msCAN channels simultaneously handle body-CAN, chassis-CAN, and diagnostic communication. The 384 KB Flash is large enough to embed full J1939 or CANopen stacks plus BCM application software, while the 24 KB RAM absorbs per-channel buffers and debounce states. According to NXP S12XE documentation, the XGATE co-processor accelerates periodic CAN and LIN message handling so the main CPU stays responsive to GPIO events. Hardware memory protection lets integrators isolate OEM calibration software from supplier function libraries. Operating from 5 V, the device tolerates cranking transients on a 12 V automotive bus without external regulators.
Recommended
Automotive HVAC Control Module
For HVAC control modules, the S912XEQ384J2MAL provides 16 channels of 12-bit ADC to read mix-air door position, blend-air feedback, in-cabin temperature sensors, and coolant temperature simultaneously, with sufficient DMA-backed throughput via the XGATE co-processor. The 50 MHz bus speed keeps control loops under 10 ms latency, comfortable for stepper or BLDC motor commutation via the 8-channel PWM module. According to manufacturer documents, the wide 3.15 V to 5.5 V supply range tolerates cranking dropouts on the vehicle battery. Compared with smaller S12X parts, the 384 KB Flash stores lookup tables and self-calibration parameters for HVAC actuators without external memory. Multiple SCI channels simplify integration with climate-control keypads and rear-seat modules.
Recommended
Industrial CAN/Modbus Gateway
The S912XEQ384J2MAL fits industrial CAN-to-Modbus or CAN-to-Ethernet gateway nodes because five msCAN controllers allow simultaneous monitoring of multiple CANopen or DeviceNet segments, while the two SCI and two SPI channels route traffic to RS-485 or Ethernet bridges. The wide 3.15 V to 5.5 V supply accommodates 24 V industrial rails after regulation, and the automotive temperature grade ensures reliability inside unconditioned control cabinets. XGATE accelerates CAN acceptance-filter processing, freeing the main CPU to run Modbus TCP frame assembly. According to NXP S12XE family reference manual, hardware interrupt prioritization is deterministic so gateway latency stays bounded. The 24 KB RAM supports concurrent socket buffers and protocol translation state machines without external memory.
Recommended
Automotive Instrument Cluster
For instrument clusters the S912XEQ384J2MAL drives stepper-motor gauges and TFT displays because the 8-channel PWM provides smooth pointer damping and backlight dimming, while the SPI ports feed a TFT controller with high refresh rates. Two SCI channels allow direct interface to LIN slaves for HVAC data and to GPS modules for clock synchronization. The 50 MHz S12XE bus speed ensures smooth gauge lag curves and four-corner telltale animations. According to NXP documentation, hardware-accelerated XGATE operations keep CAN-bus traffic off the main CPU, freeing cycles for graphics. 24 KB RAM holds one display frame plus gauge state, while 384 KB Flash stores cluster software, J1939 stack, and OEM graphics assets.
Recommended
Chassis / Powertrain Sensor Node
For chassis sensor nodes such as ABS wheel-speed modules, the S912XEQ384J2MAL offers the deterministic interrupt response of the S12XE core plus XGATE acceleration for time-critical CAN messaging. The 12-bit ADC with 3 µs conversion time captures sensor signals in real time, while the 24 KB SRAM is sufficient for wheel-speed buffers and OBD-II diagnostic snapshots. Wide 5 V supply tolerance handles load-dump and cranking events on the vehicle bus. Automotive-grade qualification (-40 C to +125 C) ensures operation in wheel-hub environments with limited heat sinking. Multiple msCAN channels let a single node serve dual-bus architectures, while SPI exposes the MCU to wheel-speed sensor ASICs.
Recommended
Industrial PLC Digital I/O Module
The S912XEQ384J2MAL works well in industrial PLC digital input/output modules because of its high-pin-count LQFP-112 package, exposing ample GPIO, ADC channels, and communication peripherals in a single device. The five msCAN controllers allow multi-segment network monitoring in factory automation, and the two SCI channels interface to RS-232 or RS-485 trunks for Modbus RTU. According to NXP documentation, hardware I/O interrupt prioritization keeps cycle times deterministic to within 1 ms even with full CAN traffic. The 384 KB Flash fits ladder-logic plus IEC 61131 runtime, and 24 KB RAM supports scan image plus diagnostics. Operating range to +125 C allows placement in uncooled cabinet zones.
Recommended
Recommended Products Summary
Engineering reference data for S912XEQ384J2MAL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XEQ384J3MAL | S912XEQ512J2MAL | MC9S12XEQ384MAL | S912XET512J3MAG |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-112 | LQFP-112 (same) | LQFP-112 (same) | LQFP-112 (same) | LQFP-112 (same) |
| Flash Memory | 384 KB | 384 KB (same) | 512 KB (+33%) | 384 KB (same) | 512 KB (+33%) |
| RAM | 24 KB | 24 KB (same) | 32 KB (+33%) | 24 KB (same) | 32 KB (+33%) |
| CPU Clock | 50 MHz | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) |
| Core | S12XE + XGATE | S12XE + XGATE | S12XE + XGATE | S12XE + XGATE | S12XE + XGATE |
| CAN Controllers | 5 (msCAN) | 5 (msCAN) | 5 (msCAN) | 5 (msCAN) | 5 (msCAN) |
| Temperature Grade | Automotive (-40 to +125 C) | Automotive (-40 to +125 C) | Automotive (-40 to +125 C) | Automotive (-40 to +125 C) | Automotive (-40 to +125 C) |
Key Differentiators
- Same-family J3 errata fix on identical die (vs S912XEQ384J3MAL)
- Up to five msCAN controllers (vs MC9S12DT256 (legacy S12 non-E))
- Higher Flash/RAM headroom in same footprint (vs S912XEQ512J2MAL)
Design Notes
Place 100 nF X7R ceramic decoupling capacitors within 5 mm of every VDD/VDDX/VDDR pin pair to VSS. Add a single 10 uF bulk capacitor near the IC supply entry. The internal voltage regulator requires sufficient bulk capacitance; insufficient decoupling can cause VDDR droop during cranking pulses. Reference: NXP S12XE family reference manual, application note AN2828.
Route the RESET line with a 1 kohm-to-4.7 kohm pull-up to VDDX, place the pull-up within 25 mm of the RESET pin, and keep RESET traces short to minimize noise pickup. Provide a 1 nF to 10 nF cap on RESET to VSS if long traces are unavoidable. According to NXP design guidance, RESET must remain low for at least 256 oscillator cycles for proper reset sequence.
For CAN bus communication, ensure ISO 11898-2 compliant termination of 120 ohm at each end of the CAN bus. Place TJA1057 (or similar) CAN transceiver within 50 mm of the msCAN pins ETXD/ERXD to minimize EMI. Use a twisted-pair cable for CAN_H and CAN_L, and avoid running these traces near switching-power traces. Reference: NXP application note AN2466 on CAN physical layer design.
Avoid exceeding 5.5 V on VDDX or VDDR; automotive load-dump events can reach 40 V without proper transient suppression. Always include a TVS diode rated for 24 V suppressor voltage on the VDDX supply rail, plus reverse-battery protection via a P-FET or Schottky diode. Without protection, a single load-dump event can destroy the IC even if the operating voltage spec is respected during steady state.
Compliance Information
AEC-Q100 qualification is part of NXP's automotive reliability flow but is not explicitly stated in the provided web snippets; compliance marked as not_qualified by default. RoHS, REACH, and halogen-free status not explicitly documented in provided data - marked unknown per data authenticity rules.
