S912XDG128F2MAA - 16-bit HCS12X MCU 128KB Flash 80MHz QFP-80 | NXP
MPN: S912XDG128F2MAA ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.22 | $14.22 |
| 10 | $13.5 | $135.00 |
| 100 | $12.4 | $1,240.00 |
| 500 | $11.1 | $5,550.00 |
| 1,000 | $9.85 | $9,850.00 |
S912XDG128F2MAA Overview
An HCS12X microcontroller is a 16-bit CISC MCU that extends the legacy HCS12 instruction set with an instruction queue, enhanced indexed addressing, an extended instruction set, and a fully HCS12-compatible interrupt stack and programmer's model. S12X parts integrate a peripheral co-processor (XGATE) on higher-end variants and target automotive body, chassis, and powertrain applications where deterministic interrupt latency and CAN connectivity are required. They sit within the broader taxonomy: microcontroller -> embedded MCU -> automotive-qualified MCU -> 16-bit CISC MCU -> HCS12X family.
Key specifications include a 2.5V/5V supply interface, 59 programmable I/O lines, on-chip LVD, POR, PWM and watchdog timers, and a connectivity block combining CANbus, I2C, SCI, and SPI. The part is rated for the automotive -40C to +125C ambient operating range and ships in a PQFP-80 tray. Lifecycle status is End of Life / Not For New Designs per the NXP product page, so it is being sourced from authorized distributors and authorized aftermarket suppliers such as Rochester Electronics for existing designs.
The S912XDG128F2MAA combines a von-Neumann core with Harvard-style bus structures for the XGATE co-processor on related derivatives, enabling efficient DMA-style peripheral transactions. The 80 MHz bus clock and 128 KB Flash support complex state machines and LIN/CAN gateway stacks typical of body control modules.
Typical applications include automotive body control modules, HVAC and instrument cluster controllers, CAN/LIN gateways, industrial PLCs, and safety-critical sensor interfaces that require AEC-Q100 grade 0 (or higher) qualification. The wide temperature range also suits under-hood and chassis-mounted ECUs.
When designing in this part, confirm supply longevity with your NXP field representative: as an EOL/Not-For-New-Designs component, plan last-time-buy volumes and verify second-source alternatives such as S912XEG128MAA or S912XEQ384J3CALR that share the QFP-80 footprint. Allow generous input-bulk capacitance because the integrated LVD/POR block does not substitute for board-level decoupling of the 2.5V and 5V rails.
This page consolidates distributor pricing, automotive-grade and cross-reference drop-in alternatives, and design notes not found in the standalone NXP datasheet to support both new engineering decisions and EOL procurement planning.
Drop-in alternatives for S912XDG128F2MAA — 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 S912XDG128F2MAA (same form factor and footprint) — differing in Mounting Type, Package, Operating Temperature, Supply Voltage, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S912XEG128MAA
✅ Drop-In📋 Reference alternative (not in catalog)
S912XEQ384J3CALR
✅ Drop-In✓ In Stock
$11.4 / Unit
View Datasheet →S912XEQ512J2MAL
✅ Drop-In✓ In Stock
$17.95 / Unit
View Datasheet →S912XET512J3MAG
✅ Drop-In✓ In Stock
$16.4 / Unit
View Datasheet →S912XEQ512J2MALR
✅ Drop-In✓ In Stock
$14.5 / Unit
View Datasheet →S912XEG384J2CALR
✅ Drop-In✓ In Stock
$9.1 / Unit
View Datasheet →S912XDG128F2MAA Maximum Ratings & Electrical Characteristics
| Core | HCS12X (16-bit CISC) |
| Core Size | 16-bit |
| Maximum CPU Clock | 80 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 12 KB |
| EEPROM Size | 4 KB |
| Supply Voltage | 2.5 V / 5 V (2.35 V - 2.75 V core) |
| Number of I/O | 59 |
| Connectivity | CANbus, I2C, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Package | 80-QFP (PQFP-80, 14x14 mm) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Operating Temperature | -40C to +125C (automotive) |
| MSL Level | 3 (168 hours) |
| Qualification | Automotive Qualified (AEC-Q100 family) |
| RoHS Status | Compliant |
| Packaging | Tray |
S912XDG128F2MAA 80-qfp (pqfp-80, 14x14 mm) Pin Configuration Guide
Pin configuration for S912XDG128F2MAA (80-qfp (pqfp-80, 14x14 mm) 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 S912XDG128F2MAA.
Refer to the datasheet for full pin configuration.
Typical Applications
S912XDG128F2MAA is suitable for 6 applications: Automotive Body Control Module, CAN/LIN Gateway, HVAC and Climate Control ECU, Instrument Cluster Controller, Industrial CAN-Based Sensor Interface, Chassis and Powertrain Sensor ECU.
Automotive Body Control Module
The S912XDG128F2MAA's 80 MHz HCS12X core, 128 KB Flash, and integrated CANbus controller make it well suited for body control modules that orchestrate lighting, door modules, mirror adjustment, and wiper control. With 59 programmable I/O lines and PWM peripherals, the part can drive multiple LED channels and brushed-motor loads directly. The -40C to +125C automotive temperature rating supports under-hood and cabin installations, while AEC-Q100 qualification allows deployment in safety-relevant body networks. Place the MCU on a star-grounded 2.5V/5V supply pair with bulk input capacitance near the package, and route the CANH/CANL differential pair as a controlled-impedance 120 ohm terminated bus for robust EMC immunity in the noisy automotive environment.
Recommended
CAN/LIN Gateway
The S912XDG128F2MAA's combined CANbus, SCI, SPI, and I2C connectivity block is ideal for gateway modules that bridge between automotive CAN, LIN sub-buses, and diagnostics interfaces. The 80 MHz core and 12 KB RAM comfortably handle message-routing tables, while 128 KB Flash accommodates network-management stacks (UDS, OBD-II). Automotive-grade qualification and 59 I/O enable direct interface to local sensors without external glue logic. For higher throughput requirements, the S912XEQ384J3CALR provides 384 KB Flash headroom on the same QFP-80 footprint, allowing gateway firmware to scale without PCB rework while preserving the existing CAN and LIN physical-layer design.
Recommended
HVAC and Climate Control ECU
Climate-control ECUs require deterministic PWM generation for blower-speed control, valve actuation, and temperature-sensor sampling - tasks the S912XDG128F2MAA handles with its integrated PWM timers, ADC channels, and SCI/SPI connectivity. The HCS12X core's enhanced indexed addressing simplifies lookup-table-driven PID loops, while 128 KB Flash fits full HVAC control algorithms including CAN-driven setpoint reception. The 2.5V/5V mixed-voltage interface supports modern sensor ICs and legacy analog front ends. Designers should decouple each VDDX/VSSX pair locally and reserve analog-ground islands for ADC inputs to avoid PWM switching noise coupling into temperature readings.
Recommended
Instrument Cluster Controller
Instrument clusters drive stepper-motor gauges, LCD segments, and indicator lamps from a single automotive-qualified MCU. The S912XDG128F2MAA's 80 MHz core, 59 I/O, and 4 KB EEPROM (for non-volatile odometer/configuration storage) provide sufficient headroom for mid-tier cluster designs. SPI bus expansion drives external stepper-driver and LED-driver ICs, while the integrated PWM peripheral handles dimming and warning-chime generation. For premium clusters, the S912XEQ384J3CALR provides 384 KB Flash on the same QFP-80 footprint to support larger graphics assets. Always reserve a dedicated analog supply (VDDA/VSSA) and route gauge-motor returns to a quiet ground to avoid pointer jitter.
Recommended
Industrial CAN-Based Sensor Interface
Industrial PLCs and remote sensor nodes benefit from the S912XDG128F2MAA's automotive-grade temperature range (-40C to +125C) and integrated CANbus controller, which together enable deployment in factory cabinets, outdoor enclosures, and chassis-mounted equipment. The 80 MHz core handles Modbus-to-CAN protocol translation, while 12 KB RAM buffers telemetry packets before forwarding on the fieldbus. SPI expansion supports external ADC ICs for multi-channel analog acquisition. For hazardous-location installations requiring isolation, pair with an isolated CAN transceiver such as the TJA1057T or ISO1050 to meet IEC 61010 creepage/clearance requirements without changing the MCU footprint.
Recommended
Chassis and Powertrain Sensor ECU
Chassis and powertrain ECUs require deterministic interrupt latency and AEC-Q100 automotive qualification - both delivered by the S912XDG128F2MAA's HCS12X core and -40C to +125C rating. The integrated CANbus controller connects to vehicle CAN/CAN-FD backbones for brake, steering, and engine-management data exchange, while PWM peripherals drive solenoid and valve actuators. The 128 KB Flash holds real-time control loops and diagnostics firmware (UDS, OBD-II). Plan PCB layout with star-ground topology and keep high-current driver returns isolated from MCU analog ground to preserve ADC accuracy; consider migrating to S912XEG128MAA if XGATE peripheral offload is needed for advanced sensor fusion.
Recommended
Recommended Products Summary
Engineering reference data for S912XDG128F2MAA — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XEG128MAA | S912XEQ384J3CALR | S912XEQ512J2MAL | S912XET512J3MAG | S912XEQ512J2MALR | S912XEG384J2CALR |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-QFP (PQFP-80, 14x14 mm) | 80-QFP (PQFP-80, 14x14 mm) - same | 80-QFP (PQFP-80, 14x14 mm) - same | 80-QFP (PQFP-80, 14x14 mm) - same | 80-QFP (PQFP-80, 14x14 mm) - same | 80-QFP (PQFP-80, 14x14 mm) - same | 80-QFP (PQFP-80, 14x14 mm) - same |
| Core | HCS12X (no XGATE) | HCS12X + XGATE | HCS12X + XGATE | HCS12X + XGATE | HCS12X + XGATE | HCS12X + XGATE | HCS12X + XGATE |
| CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 128 KB | 128 KB (same) | 384 KB (+200%) | 512 KB (+300%) | 512 KB (+300%) | 512 KB (+300%) | 384 KB (+200%) |
| RAM | 12 KB | 12 KB (same) | 32 KB (+167%) | 32 KB (+167%) | 32 KB (+167%) | 32 KB (+167%) | 32 KB (+167%) |
| EEPROM | 4 KB | 4 KB (same) | 4 KB (same) | 4 KB (same) | 4 KB (same) | 4 KB (same) | 4 KB (same) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Automotive Grade (AEC-Q100) | Yes (MAA suffix) | Yes | Yes | Yes | Yes | Yes | Yes |
| Connectivity | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI | CAN, I2C, SCI, SPI |
Key Differentiators
- Lower-cost base S12XDG variant without XGATE co-processor (vs S912XEG128MAA)
- Smaller Flash footprint for cost-sensitive designs (vs S912XEQ384J3CALR)
- Long-established HCS12X tool chain and third-party support (vs Newer Cortex-M automotive MCUs)
Design Notes
Estimated: at full 80 MHz operation with all peripherals enabled, the HCS12X core draws roughly 50-70 mA from the 2.5V rail; add 10-20 mA for I/O switching on the 5V rail. Place a 10 uF bulk tantalum plus 100 nF ceramic decoupling capacitor within 5 mm of each VDDX/VSSX pin pair. The integrated POR and LVD blocks do NOT replace board-level decoupling; maintain separate analog (VDDA) and digital (VDDX) supply planes.
Route the CANH/CANL differential pair as a controlled-impedance 120 ohm bus with termination at both ends; keep the pair length matched within 5 mm and avoid routing over power-plane splits. SPI clock lines exceeding 25 MHz require series damping resistors at the driver. For QFP-80 packages, fan out all 80 pins on the top layer with via-in-pad only on the thermal pad area; never route signal traces beneath the package to avoid coupling to internal bond wires.
Because the S912XDG128F2MAA is in End of Life / Not For New Designs status, do NOT start new design-ins without a confirmed long-term supply agreement. Always check the NXP product page for the latest lifecycle notice before quoting. Program the LVD to the application's specific 2.5V/5V threshold and enable the watchdog timer for safety-critical automotive deployments - the WDOG cannot be disabled once enabled in some S12X derivatives, so configure it during BDM-mode programming.
Compliance Information
RoHS compliant per distributor product pages. AEC-Q100 qualified for automotive applications per NXP S12X family datasheet. REACH unaffected per Rochester Electronics listing. Part is End of Life / Not For New Designs - source from authorized distributors.
