S912XEP100BMAL - 16-Bit S12X MCU, 1MB Flash, 50MHz | NXP
MPN: S912XEP100BMAL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $20.37 | $20.37 |
| 10 | $18.85 | $188.50 |
| 100 | $16.92 | $1,692.00 |
| 500 | $15.1 | $7,550.00 |
| 1,000 | $13.8 | $13,800.00 |
S912XEP100BMAL Overview
A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory (Flash/ROM), working memory (RAM), and a rich set of on-chip peripherals such as timers, ADCs, communication interfaces, and GPIO. The HCS12X family extends the classic S12 architecture with enhanced interrupt handling, a co-processor channel, and increased address space. MCUs sit at the heart of embedded systems, sitting below SoCs in complexity but above discrete logic in capability, and they form the broadest category in the Integrated Circuits > Microcontrollers segment.
Key features include a 12-bit ADC with 3 us conversion time, an Enhanced Capture Timer (ECT), Periodic Interrupt Timer (PIT), Real-Time Interrupt (RTI), and multiple serial interfaces (SCI, SPI, I2C, CAN). The XGATE peripheral channel executes virtual peripherals at up to 100 MHz equivalent throughput, allowing deterministic interrupt response under heavy I/O load. Hardware emulation of EEPROM using Flash sectors removes the need for an external EEPROM in most designs.
The S12XCPU core uses a CISC instruction set with 16-bit ALU, 20-bit ALU extensions, and BDM/SPI-based debug. A memory protection unit enforces supervisor/user privilege separation, and the system clock synthesizer supports both PLL and limp-home modes for fail-safe automotive operation. The 112-pin LQFP exposes up to 91 GPIO pins across ports A, B, E, K, T, S, M, P, H, J, and AD, depending on peripheral multiplexing.
Typical applications include automotive body control modules, body controllers, lighting controllers, gateway ECUs, and industrial automation nodes. The combination of CAN, large Flash, and -40C to +125C qualification makes it well suited for chassis and powertrain adjacent ECUs in vehicles. The hardware EEPROM emulation also reduces BOM cost in node ECUs that store calibration data.
When designing with this MCU, plan for a stable 4 MHz to 16 MHz crystal reference; the internal PLL multiplies to 50 MHz bus. Ensure the BDM connector is accessible for firmware development. Watchdog timer configuration must be enabled early in the bring-up to prevent runaway code in production. Use NXP's CodeWarrior or S32 Design Studio toolchains for development.
This page synthesizes distributor pricing, qualified drop-in alternatives within the S12X family, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-ready reference for selecting the S912XEP100BMAL.
Drop-in alternatives for S912XEP100BMAL — 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 S912XEP100BMAL (same form factor and footprint) — differing in Mounting Type, Package, Core Architecture, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S912XET512J3MAG
✅ Drop-In✓ In Stock
$16.4 / Unit
View Datasheet →S912XEQ384J3CALR
✅ Drop-In✓ In Stock
$11.4 / Unit
View Datasheet →S912XEQ512J2MAL
✅ Drop-In✓ In Stock
$17.95 / Unit
View Datasheet →S912XEG384J2CALR
✅ Drop-In✓ In Stock
$9.1 / Unit
View Datasheet →S912XEXEQ512CAG
✅ Drop-In📋 Reference alternative (not in catalog)
S912XDT256F1MAL
✅ Drop-In✓ In Stock
$15.82 / Unit
View Datasheet →S912XEP100BMAL Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS12X (S12X CPU, 16-bit CISC) |
| Bus Speed | 50 MHz |
| Program Memory (Flash) | 1 MB (1M x 8) |
| XGATE Co-processor | Yes |
| EEPROM Emulation | Hardware-emulated using Flash |
| ADC | 12-bit, 3 us conversion time |
| Memory Protection Unit | Yes (supervisor/user modes) |
| Timers | ECT, PIT, RTI |
| Operating Temperature | -40C to +125C (automotive) |
| Package | 112-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Qualification | AEC-Q100 qualified |
S912XEP100BMAL Pin Configuration
| Pin 1 | VSSR — Voltage regulator decoupling |
| Pin 10 | PA0 — Port A bit 0 / ATD |
| Pin 20 | PA7 — Port A bit 7 / ATD |
| Pin 30 | PJ0 — Port J bit 0 / interrupt |
| Pin 40 | PK0 — Port K bit 0 |
| Pin 50 | PT0 — Port T bit 0 / timer |
| Pin 60 | PS0 — Port S bit 0 / SPI |
| Pin 70 | PM0 — Port M bit 0 |
| Pin 80 | PP0 — Port P bit 0 / PWM |
| Pin 90 | PH0 — Port H bit 0 |
| Pin 100 | AD0 — Port AD bit 0 / ATD |
| Pin 112 | VDDR — Voltage regulator supply |
Typical Applications
S912XEP100BMAL is suitable for 6 applications: Automotive Body Control Module (BCM), Automotive Gateway ECU, Industrial Automation Controller, Lighting Control Module, Chassis Sensor Cluster, HVAC Control Module.
Automotive Body Control Module (BCM)
The S912XEP100BMAL fits automotive BCM designs because of its 1 MB Flash, which comfortably holds body-comfort, lighting, and door-module firmware stacks, and its XGATE co-processor that handles frequent CAN-bus interrupts and PWM-driven lighting control without loading the main CPU. AEC-Q100 qualification at -40C to +125C supports under-dash mounting where ambient temperatures swing widely. Compared to discrete CAN-node MCUs, the integrated ECT, RTI, and 12-bit ADC simplify BCM schematics, reducing BOM by 5-10 components per board.
Recommended
Automotive Gateway ECU
Gateway ECUs route messages between CAN, LIN, and FlexRay networks, and the S912XEP100BMAL's 1 MB Flash holds gateway routing tables plus diagnostic firmware. The XGATE offloads CAN message filtering at up to 1 Mbit/s, freeing the CPU for cross-domain message translation. The 112-LQFP exposes sufficient GPIO for multiple bus transceivers and status LEDs. Compared to ARM Cortex-M0+ gateways, the S12X has stronger interrupt-latency determinism under multi-bus load.
Recommended
Industrial Automation Controller
Factory automation nodes use the S912XEP100BMAL for deterministic control loops where the S12X CPU and XGATE deliver predictable interrupt latency even under heavy protocol traffic. The 1 MB Flash supports Modbus, EtherNet/IP, or PROFINET stacks with room for application logic. AEC-Q100 qualification exceeds typical industrial temperature requirements, allowing deployment in unconditioned cabinets. The 12-bit ADC and ECT provide motor-position feedback and PWM outputs for stepper and BLDC control.
Recommended
Lighting Control Module
Automotive LED headlamp and ambient-lighting modules use the S912XEP100BMAL for matrix-LED driving and color-mixing algorithms, leveraging the ECT for high-resolution PWM at up to 100 kHz. The XGATE handles LIN-commanded color updates while the main CPU executes dimming curves. AEC-Q100 qualification supports headlamp-mounted positions with high thermal stress. The 1 MB Flash stores lookup tables for adaptive driving beam patterns across vehicle variants.
Recommended
Chassis Sensor Cluster
Chassis-mounted sensor clusters consolidate multiple sensor inputs (yaw rate, wheel speed, steering angle) and the S912XEP100BMAL's 12-bit ADC with 3 us conversion handles multi-channel sampling at 1 kHz rates. The XGATE pre-processes sensor data before the CPU executes vehicle dynamics logic. The 112-LQFP supports chassis-harness pin counts, and AEC-Q100 plus -40C to +125C thermal range suit wheel-well mounting. 1 MB Flash stores calibration coefficients and vehicle-variant logic.
Recommended
HVAC Control Module
Automotive HVAC modules use the S912XEP100BMAL for blower-motor PWM control, blend-door servo driving, and CAN-bus communication with the body controller. The 1 MB Flash stores climate-control algorithms and fault-diagnostic logs. The ECT generates the high-resolution PWM for brushless blower motors, and the 12-bit ADC reads cabin temperature and humidity sensors. AEC-Q100 supports dashboard-mounted modules that see solar-loading thermal stress.
Recommended
Recommended Products Summary
Engineering reference data for S912XEP100BMAL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XET512J3MAG | S912XEQ384J3CALR | S912XEQ512J2MAL | S912XEG384J2CALR |
|---|---|---|---|---|---|
| Package | 112-LQFP (20x20 mm) | 112-LQFP | 112-LQFP | 112-LQFP | 112-LQFP |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | HCS12X (S12X) | HCS12X (S12X) | HCS12X (S12X) | HCS12X (S12X) | HCS12X (S12XE) |
| Flash Memory | 1 MB | 512 KB | 384 KB | 512 KB | 384 KB |
| Bus Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes |
| Automotive Qualified (AEC-Q100) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Largest Flash density in S12XE family at 112-LQFP (vs S912XEQ512J2MAL)
- Automotive-qualified with -40C to +125C range (vs S912XEQ384J3CALR)
- XGATE co-processor for deterministic I/O offload (vs S912XDT256F1MAL)
Design Notes
The S912XEP100BMAL integrates an on-chip voltage regulator with VDDR/VSSR pins that require 100 nF and 4.7 uF decoupling placed within 5 mm of the pins. The internal regulator sources up to 60 mA for internal logic; external loads on VDDR are not allowed. Use a bulk 10 uF tantalum on VDDX to handle inrush during Flash programming. Power sequencing requires VDDR stable before VDDX ramps to prevent brown-out reset.
Place the 4-16 MHz crystal within 10 mm of the EXTAL/XTAL pins, with the load capacitors grounded to a quiet ground island directly beneath the crystal. Keep the BDM connector (BKGD, MODC, VSSR) accessible for in-circuit debug. Route the CAN bus traces as a differential pair with 120 ohm characteristic impedance, and place the CAN transceiver within 50 mm of the MCU CAN pins to minimize stub length. The 112-LQFP thermal pad (if any) must be soldered to a 1 sq inch copper pour for thermal dissipation at high ambient temperatures.
Do not leave MODC pin floating during reset; tie it high for normal single-chip mode or low for special test mode. The XGATE channel must be initialized with a valid interrupt vector table before the first peripheral interrupt, or the channel will trap. Flash programming requires the VFP pin supply to be stable at 2.7-3.3 V; brown-outs during programming can corrupt the Flash array. Always enable the COP watchdog in production firmware, with a refresh window shorter than the longest allowed fault latency.
Compliance Information
AEC-Q100 qualified per NXP automotive datasheet. RoHS and REACH compliant per Mouser product listing.
