S912XEQ384F0CAL - 16-bit S12X MCU 384KB Flash 50MHz | NXP
MPN: S912XEQ384F0CAL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.56 | $8.56 |
| 10 | $8.1 | $81.00 |
| 100 | $7.45 | $745.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $6.2 | $6,200.00 |
S912XEQ384F0CAL Overview
A 16-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, executing control tasks in embedded systems. Within the power-management and embedded-control hierarchy, the S12X family sits between 8-bit HC08/S08 MCUs and 32-bit automotive processors such as the SPC5 Power Architecture line, offering real-time deterministic control with a low migration barrier.
Key features include the XGATE co-processor, a RISC engine that offloads interrupt handling and I/O processing to boost overall system performance as if implementing virtual peripherals; a flexible, programmable, hardware-emulated EEPROM (D-Flash); and system integrity support through a memory protection unit (MPU) with supervisor and user operating modes. Peripherals include an enhanced capture timer (ECT), periodic interrupt timer (PIT), real-time interrupt (RTI), CAN modules, and the 12-bit ADC supporting fast analog acquisition for motor and sensor control.
The S12X architecture is a CISC-style 16-bit CPU with an extended addressing plane (X-gate paging), mature development tooling (CodeWarrior), and a long automotive track record for body, chassis, and powertrain control. The -40C to +85C industrial/automotive temperature grade and NXP automotive qualification support harsh-environment deployment.
Typical applications include automotive body control modules, gateway nodes, HVAC blowers, electric power steering assist logic, industrial motor control, and building automation controllers where deterministic 16-bit control with rich analog and CAN connectivity is required.
Design consideration: the 50 MHz bus speed assumes proper PLL configuration and crystal selection; ensure decoupling on all VDD/VDDA pairs and review EMC layout guidelines early, since automotive EMC testing frequently drives PCB respins on 112-pin LQFP devices.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for S912XEQ384F0CAL — 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 S912XEQ384F0CAL (same form factor and footprint) — differing in Package, Operating Temperature, Core Processor, Timers, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12XEQ384CAG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →S912XEG384J2CAL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.1 / Unit
View Datasheet →S912XEG256J2CAL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$15.4 / Unit
View Datasheet →MC9S12XEP768CAG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$19.85 / Unit
View Datasheet →S9S12XF384J2MLMR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →S912XEQ384F0CAL Maximum Ratings & Electrical Characteristics
| Core Processor | HCS12X (S12X) |
| Core Size | 16-bit |
| Bus Speed | 50 MHz |
| Flash Memory | 384 KB (384K x 8) |
| RAM Size | 24 KB (24K x 8) |
| EEPROM | Hardware-emulated (D-Flash), programmable |
| ADC Resolution | 12-bit |
| ADC Conversion Time | 3 us |
| Co-processor | XGATE RISC co-processor |
| Memory Protection | MPU with supervisor/user modes |
| Timers | Enhanced Capture Timer (ECT), PIT, RTI |
| Operating Temperature | -40C to +85C |
| Package | 112-LQFP (20x20 mm), gull-wing terminals |
| Mounting Type | Surface Mount |
| Qualification | Automotive Qualified |
| Temperature Grade | Industrial |
S912XEQ384F0CAL 112-lqfp (20x20 mm), gull-wing terminals Pin Configuration Guide
Pin configuration for S912XEQ384F0CAL (112-lqfp (20x20 mm), gull-wing terminals package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for S912XEQ384F0CAL.
Refer to the datasheet for full pin configuration.
Typical Applications
S912XEQ384F0CAL is suitable for 6 applications: Automotive Body Control Modules, HVAC Blower and Climate Control, Industrial Motor Control, In-Vehicle Network Gateway Nodes, Building Automation Controllers, Agricultural and Off-Highway Vehicle Electronics.
Automotive Body Control Modules
The S912XEQ384F0CAL is a proven fit for automotive body control modules (BCM), where it drives loads (lamps, relays, motors) while monitoring switch inputs and LIN/CAN networks. Its 384 KB Flash holds complex diagnostic and network stacks, the XGATE co-processor services high-rate I/O interrupts without stealing CPU time from the state machine, and the hardware-emulated EEPROM stores configuration and fault data without an external EEPROM IC. The -40C to +85C grade and automotive qualification support under-hood-adjacent and cabin environments. The 12-bit ADC with 3 us conversion handles load-current sensing, and the MPU with supervisor/user modes helps partition network-stack code from application logic, improving system integrity in safety-relevant body functions.
Recommended
HVAC Blower and Climate Control
In HVAC blowers and climate-control units, the S912XEQ384F0CAL combines deterministic 16-bit control with the analog precision needed for blower motor current regulation and temperature acquisition. The 12-bit ADC with 3 us conversion time samples NTC and current-shuffler signals quickly, while the Enhanced Capture Timer measures fan tach pulses for closed-loop speed control. The PIT and RTI provide fixed-rate scheduling of PID loops and watchdog activity, and 384 KB Flash accommodates calibration tables plus LIN/CAN diagnostics. The XGATE co-processor offloads commutation and tach servicing so the main core runs the control algorithm and network stack concurrently, reducing interrupt latency and improving acoustic behavior of the blower across the -40C to +85C range.
Recommended
Industrial Motor Control
For industrial motor drives and motion control, the S912XEQ384F0CAL offers a 50 MHz bus, 12-bit ADC with 3 us conversion, and the ECT for PWM measurement - adequate for brushed DC, stepper, and BLDC control loops. The XGATE co-processor executes commutation and fault-handling threads with deterministic latency, while the main S12X core runs the speed/position controller and Modbus/CAN communication. The hardware-emulated EEPROM stores motor parameter sets and fault logs without external memory, and the MPU separates critical control code from user-written logic. Industrial ambient conditions within -40C to +85C are directly supported, and the mature CodeWarrior toolchain plus abundant S12X reference designs shorten development cycles for retrofit and OEM drive electronics.
Recommended
In-Vehicle Network Gateway Nodes
The S912XEQ384F0CAL serves as a cost-effective gateway or routing node between CAN subnets in vehicles and industrial machines. Its 384 KB Flash holds dual-channel CAN stacks, UDS diagnostics, and routing tables, while the XGATE co-processor pre-processes frames and filters messages to keep main-core latency low. The PIT provides precise periodic scheduling for network management and timeout handling, and the hardware-emulated EEPROM retains DTC and configuration data across power cycles. The MPU with supervisor and user modes supports a partitioned software architecture separating the communication stack from application code, which eases review for functional-safety-adjacent designs. Rochester Electronics licensed production adds a long-term supply option for platforms with extended service lives.
Recommended
Building Automation Controllers
In building automation - damper actuators, valve controllers, and room controllers - the S912XEQ384F0CAL balances cost, analog capability, and network connectivity. The 12-bit ADC acquires temperature, humidity, and pressure sensor inputs at 3 us conversion speed, the ECT handles pulse-flow metering (e.g., energy meters), and the RTI maintains wall-clock real-time interrupt scheduling. With 384 KB Flash and 24 KB RAM, full BACnet- or Modbus-class stacks plus PID control loops fit without external memory, and the emulated EEPROM stores setpoints and schedules reliably. The -40C to +85C rating covers unconditioned mechanical rooms, while the S12X family's long lifecycle and Rochester Electronics availability support decade-long building product support commitments.
Recommended
Agricultural and Off-Highway Vehicle Electronics
Off-highway equipment - tractor implement controllers, sprayer rate controllers, and lift electronics - benefits from the S912XEQ384F0CAL's rugged 16-bit architecture. The 50 MHz bus and XGATE co-processor manage ISOBUS/CAN communication and PWM valve driving concurrently, while the 12-bit ADC with 3 us conversion reads position potentiometers, pressure transducers, and current shunts. The ECT captures wheel-speed and flow pulses for rate control, and the hardware-emulated EEPROM preserves calibration and service data through power cycles in the field. The -40C to +85C temperature grade and automotive qualification align with agricultural EMC and environmental requirements, and the S12X ecosystem's diagnostic tooling simplifies field service and end-of-line programming.
Recommended
Recommended Products Summary
Engineering reference data for S912XEQ384F0CAL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12XEQ384CAG | S912XEG384J2CAL | S912XEG256J2CAL | MC9S12XEP768CAG | S9S12XF384J2MLMR |
|---|---|---|---|---|---|---|
| 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 |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 384 KB | 384 KB | 384 KB | 256 KB | 768 KB | 384 KB |
| Core / Bus Speed | HCS12X 16-bit, 50 MHz | HCS12X 16-bit, 50 MHz | HCS12X 16-bit, 50 MHz | HCS12X 16-bit, 50 MHz | HCS12X 16-bit, 50 MHz | HCS12X 16-bit, 50 MHz |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes | Yes |
| ADC | 12-bit, 3 us conversion | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Family Networking Features | CAN (S12XE) | CAN | CAN (G variant peripheral mix) | CAN (G variant peripheral mix) | CAN | CAN + FlexRay (XF) |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Automotive Qualification | Automotive Qualified | Automotive Qualified | Automotive Qualified | Automotive Qualified | Automotive Qualified | Automotive Qualified |
Key Differentiators
- Balanced 384 KB Flash with hardware-emulated EEPROM (vs S912XEG256J2CAL)
- Cost-effective upgrade headroom (vs MC9S12XEP768CAG)
- CAN-focused peripheral set for lower system cost (vs S9S12XF384J2MLMR)
Design Notes
S12XE devices run from a nominal 5 V supply with an internal voltage regulator generating the 2.5 V core rail. Decouple all VDD/VSS pairs with 100 nF ceramics placed within 2 mm of the pins, and decouple VDDA/VSSA separately with an RC filter (e.g., 10 ohm + 1 uF) to keep ADC noise low - critical for achieving full 12-bit accuracy at 3 us conversion. Verify the exact supply range on the NXP S12XE family data sheet before finalizing the regulator design.
For the 112-pin LQFP, route the crystal/oscillator loop with a ground guard ring and keep trace lengths under 15 mm. CAN differential pairs should be 120 ohm impedance with a common-mode choke near the transceiver. Use a solid ground plane on layer 2 to control EMC emissions at the 50 MHz bus frequency - automotive CISPR-class testing (per OEM specs) is the usual acceptance gate for S12X nodes, so early pre-compliance sweeps save respins.
The 50 MHz bus speed is achieved via the internal PLL from a lower-frequency crystal; do not assume the crystal frequency equals bus frequency. Also, when porting code from the legacy MC9S12XEQ384CAG ordering code, verify mask-set/errata compatibility across production date codes. XGATE threads run from a separate RAM region - misconfigured XGATE vector tables are the most common bring-up failure reported on S12XE designs.
Compliance Information
NXP product page lists Environmental Quality and RoHS/REACH sections; specific compliance status for this ordering code must be confirmed on nxp.com/part/S912XEQ384F0CAL. The part is advertised as Automotive Qualified per Mouser/NXP listings.
