S912XDG128F2VAL - 16-bit S12X MCU, 128KB Flash, 112-LQFP | NXP
MPN: S912XDG128F2VAL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $19.85 | $198.50 |
| 100 | $17.2 | $1,720.00 |
| 500 | $15.65 | $7,825.00 |
| 1,000 | $14.1 | $14,100.00 |
S912XDG128F2VAL Overview
A microcontroller (MCU) is a single-chip processor that combines a CPU core, program and data memory, and configurable peripherals on one die. The HCS12X family is the 16-bit flagship of NXP's legacy Freescale HCS12 line; it adds an instruction queue, enhanced indexed addressing, and an enhanced instruction set while remaining source-compatible with HCS12 code. The S12X core sits in the automotive microcontroller hierarchy between HCS12 (8-bit-like, 16-bit bus) and the higher-end PowerPC-based MPC5xxx devices.
Key features of the S912XDG128F2VAL include 128KB of Flash, 2KB of EEPROM, 8KB of RAM (per the S12XD family datasheet), an 80 MHz maximum bus frequency, and an automotive-grade temperature rating of -40°C to +105°C. The HCS12X core uses interrupt stacking and a programmer's model identical to HCS12, simplifying migration of legacy S12 code. An integrated XGATE co-processor (typical of the S12XD sub-family) offloads interrupt-driven I/O, improving aggregate throughput.
Typical application areas include automotive body and chassis control, industrial CAN nodes, HVAC controllers, instrument clusters, and sensor-fusion ECUs. The combination of CAN bus, PWM, and an LVD/POR block makes it well-suited to 12V automotive electrical systems. With 91 GPIO and 5V-tolerant I/O, it can directly drive actuator drivers and read analog/digital sensor inputs.
When designing with this part, ensure your toolchain supports the S12X instruction set (CodeWarrior, Cosmic, IAR). Plan for a 112-LQFP footprint with adequate thermal copper for the -40°C to +105°C automotive range. The pin-compatible variants S912XET256 and S912XDT256 in the LQFP-112 footprint enable easy memory upgrades without PCB rework. Source quotes show this part remains active in distributor inventory as of 2026-10-21, though lifecycle status should be re-verified before long-lifecycle automotive programs.
Drop-in alternatives for S912XDG128F2VAL — 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 S912XDG128F2VAL (same form factor and footprint) — differing in Package, Package Code, Core Architecture, Operating Temperature, Pin Count.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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S912XDT256F1VAA
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S912XDG128F2VAL Maximum Ratings & Electrical Characteristics
| Manufacturer | NXP Semiconductors |
| Part Number | S912XDG128F2VAL |
| Series | HCS12X S12XD |
| Core Processor | HCS12X |
| Core Size | 16-bit |
| CPU Speed (max) | 80 MHz |
| Program Memory Size | 128 KB (128K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | 2 KB (2K x 8) |
| Number of I/O | 91 |
| Connectivity | CANbus, I²C, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| Operating Temperature | -40°C to +105°C |
| Package | 112-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Qualification | Automotive Qualified |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
S912XDG128F2VAL Pin Configuration
| Pin 1 | AN7 — Analog input channel 7 / digital I/O |
| Pin 2 | AN6 — Analog input channel 6 / digital I/O |
| Pin 3 | AN5 — Analog input channel 5 / digital I/O |
| Pin 4 | AN4 — Analog input channel 4 / digital I/O |
| Pin 5 | AN3 — Analog input channel 3 / digital I/O |
| Pin 6 | AN2 — Analog input channel 2 / digital I/O |
| Pin 7 | AN1 — Analog input channel 1 / digital I/O |
| Pin 8 | AN0 — Analog input channel 0 / digital I/O |
| Pin 9 | VRH — ADC reference high voltage |
| Pin 10 | VRL — ADC reference low voltage |
| Pin 11 | VDDA — Analog supply voltage |
| Pin 12 | VSSA — Analog ground |
| Pin 13 | BKGD — Background debug mode pin |
| Pin 14 | RESET — External reset (active low) |
| Pin 15 | TEST — Test mode (must be tied to VSS for normal operation) |
| Pin 16 | XIRQ — Non-maskable interrupt request |
| Pin 17 | IRQ — Maskable interrupt request |
| Pin 18 | MODC — Mode selection (normal mode pulled high) |
| Pin 19 | PAD0 — Port AD bit 0 |
| Pin 20 | PAD1 — Port AD bit 1 |
| Pin 21 | PAD2 — Port AD bit 2 |
| Pin 22 | PAD3 — Port AD bit 3 |
| Pin 23 | PAD4 — Port AD bit 4 |
| Pin 24 | PAD5 — Port AD bit 5 |
| Pin 25 | PAD6 — Port AD bit 6 |
| Pin 26 | PAD7 — Port AD bit 7 |
| Pin 27 | PAD8 — Port AD bit 8 |
| Pin 28 | PAD9 — Port AD bit 9 |
| Pin 29 | PAD10 — Port AD bit 10 |
| Pin 30 | PAD11 — Port AD bit 11 |
| Pin 31 | PAD12 — Port AD bit 12 |
| Pin 32 | PAD13 — Port AD bit 13 |
| Pin 33 | PAD14 — Port AD bit 14 |
| Pin 34 | PAD15 — Port AD bit 15 |
| Pin 35 | VDDR — Voltage regulator power (internal regulator input) |
| Pin 36 | VSS1 — Digital ground 1 |
| Pin 37 | VDD1 — Digital supply 1 (2.5V internal / 3.3V-5V I/O) |
| Pin 38 | PE0 — Port E bit 0 / XGATE IRQ |
| Pin 39 | PE1 — Port E bit 1 / XGATE IRQ |
| Pin 40 | PE2 — Port E bit 2 / XGATE IRQ |
| Pin 41 | PE3 — Port E bit 3 / XGATE IRQ |
| Pin 42 | PE4 — Port E bit 4 / XGATE IRQ |
| Pin 43 | PE5 — Port E bit 5 / XGATE IRQ |
| Pin 44 | PE6 — Port E bit 6 / XGATE IRQ |
| Pin 45 | PE7 — Port E bit 7 / XGATE IRQ |
| Pin 46 | PK0 — Port K bit 0 |
| Pin 47 | PK1 — Port K bit 1 |
| Pin 48 | PK2 — Port K bit 2 |
| Pin 49 | PK3 — Port K bit 3 |
| Pin 50 | PK4 — Port K bit 4 |
| Pin 51 | PK5 — Port K bit 5 |
| Pin 52 | PK6 — Port K bit 6 |
| Pin 53 | PK7 — Port K bit 7 |
| Pin 54 | PJ0 — Port J bit 0 |
| Pin 55 | PJ1 — Port J bit 1 |
| Pin 56 | PJ2 — Port J bit 2 |
| Pin 57 | PJ3 — Port J bit 3 |
| Pin 58 | PJ4 — Port J bit 4 |
| Pin 59 | PJ5 — Port J bit 5 |
| Pin 60 | PJ6 — Port J bit 6 |
| Pin 61 | PJ7 — Port J bit 7 |
| Pin 62 | PM0 — Port M bit 0 |
| Pin 63 | PM1 — Port M bit 1 |
| Pin 64 | PM2 — Port M bit 2 |
| Pin 65 | PM3 — Port M bit 3 |
| Pin 66 | PM4 — Port M bit 4 |
| Pin 67 | PM5 — Port M bit 5 |
| Pin 68 | PM6 — Port M bit 6 |
| Pin 69 | PM7 — Port M bit 7 |
| Pin 70 | PS0 — Port S bit 0 / SPI0 SCK |
| Pin 71 | PS1 — Port S bit 1 / SPI0 MOSI |
| Pin 72 | PS2 — Port S bit 2 / SPI0 MISO |
| Pin 73 | PS3 — Port S bit 3 / SPI0 SS |
| Pin 74 | PS4 — Port S bit 4 / SCI0 TXD |
| Pin 75 | PS5 — Port S bit 5 / SCI0 RXD |
| Pin 76 | PS6 — Port S bit 6 |
| Pin 77 | PS7 — Port S bit 7 |
| Pin 78 | PT0 — Port T bit 0 / IOC0 channel 0 |
| Pin 79 | PT1 — Port T bit 1 / IOC0 channel 1 |
| Pin 80 | PT2 — Port T bit 2 / IOC0 channel 2 |
| Pin 81 | PT3 — Port T bit 3 / IOC0 channel 3 |
| Pin 82 | PT4 — Port T bit 4 / IOC0 channel 4 |
| Pin 83 | PT5 — Port T bit 5 / IOC0 channel 5 |
| Pin 84 | PT6 — Port T bit 6 / IOC0 channel 6 |
| Pin 85 | PT7 — Port T bit 7 / IOC0 channel 7 |
| Pin 86 | CAN0TX — CAN0 transmit output |
| Pin 87 | CAN0RX — CAN0 receive input |
| Pin 88 | TXD1 — SCI1 transmit output |
| Pin 89 | RXD1 — SCI1 receive input |
| Pin 90 | SCL0 — I²C0 clock line |
| Pin 91 | SDA0 — I²C0 data line |
| Pin 92 | EXTAL |
| Pin 93 | XTAL — Crystal driver input |
| Pin 94 | PLL_VDD — PLL supply voltage (filtered) |
| Pin 95 | PLL_VSS — PLL ground |
| Pin 96 | VDD2 — Digital supply 2 |
| Pin 97 | VSS2 — Digital ground 2 |
| Pin 98 | PP0 — Port P bit 0 / PWM channel 0 |
| Pin 99 | PP1 — Port P bit 1 / PWM channel 1 |
| Pin 100 | PP2 — Port P bit 2 / PWM channel 2 |
| Pin 101 | PP3 — Port P bit 3 / PWM channel 3 |
| Pin 102 | PP4 — Port P bit 4 / PWM channel 4 |
| Pin 103 | PP5 — Port P bit 5 / PWM channel 5 |
| Pin 104 | PP6 — Port P bit 6 / PWM channel 6 |
| Pin 105 | PP7 — Port P bit 7 / PWM channel 7 |
| Pin 106 | PB0 — Port B bit 0 |
| Pin 107 | PB1 — Port B bit 1 |
| Pin 108 | PB2 — Port B bit 2 |
| Pin 109 | PB3 — Port B bit 3 |
| Pin 110 | PB4 — Port B bit 4 |
| Pin 111 | PB5 — Port B bit 5 |
| Pin 112 | VSS3 — Digital ground 3 |
Typical Applications
S912XDG128F2VAL is suitable for 6 applications: Automotive Body Control Module, Industrial CAN-Based Sensor Hub, HVAC Climate Control ECU, Instrument Cluster Driver, Battery Management Slave Module, Automotive Lighting Controller.
Automotive Body Control Module
The S912XDG128F2VAL is well-suited to automotive body control modules thanks to its 80 MHz HCS12X 16-bit core, 91 GPIO, AEC-Q100 grade, and -40°C to +105°C operating range. Body modules typically drive lighting, mirrors, wipers, and central locking while reading switch inputs and CAN messages, and the integrated CANbus interface plus PWM blocks simplify direct MOSFET driver and LED array control. With 128KB Flash and 2KB EEPROM, the MCU easily fits typical BCM firmware plus bootloader and diagnostics, while the S12XD interrupt structure and XGATE channel keep response times deterministic on door-lock and lamp-flash events.
Recommended
Industrial CAN-Based Sensor Hub
For industrial sensor hubs, the S912XDG128F2VAL combines CANbus connectivity with SCI/SPI/I²C and 91 GPIO, allowing direct interfacing with multiple sensor front-ends and the fieldbus backbone. The 80 MHz HCS12X core processes typical CAN 2.0B traffic at 1 Mbps while still running housekeeping and diagnostics. Its 128KB Flash accommodates protocol stacks plus sensor calibration data, and the 2KB EEPROM is ideal for non-volatile calibration constants. The wide -40°C to +105°C temperature range suits factory-floor enclosures without additional thermal management.
Recommended
HVAC Climate Control ECU
In automotive HVAC climate controllers, the S912XDG128F2VAL's PWM channels drive blower motors and blend-door actuators while its ADC channels read cabin temperature, ambient temperature, and humidity sensors over I²C or analog lines. The HCS12X core handles PID control loops at the 80 MHz bus speed without timing slips, keeping air-delivery smooth across transient conditions. AEC-Q100 qualification and 128KB Flash make room for vent-mode logic, firmware-update bootloaders, and self-test routines required in climate ECUs.
Recommended
Instrument Cluster Driver
The S912XDG128F2VAL drives stepper-motor gauges and indicator LEDs inside analog/digital hybrid instrument clusters, with its PWM channels suitable for gauge pointer drive and backlight dimming. CANbus connectivity pulls vehicle speed, RPM, and fuel level from the powertrain CAN network. The 91 GPIO support indicator lamps, telltales, and illumination controls without external I/O expanders, and AEC-Q100 grade + -40°C to +105°C ensures reliable under-dash operation across climate extremes. 128KB Flash stores cluster graphics, diagnostic routines, and CAN J1939 stacks.
Recommended
Battery Management Slave Module
The S912XDG128F2VAL is suited to lithium-ion battery management slave modules in 12V/48V mild-hybrid automotive packs, where its CANbus interface reports cell voltages and temperatures to a master BMS. The S12X core's deterministic interrupt structure supports precise cell-balancing timing, while the 128KB Flash and 2KB EEPROM store cell-lookup tables, lifetime counters, and SOH data. AEC-Q100 qualification plus the -40°C to +105°C range matches the automotive underhood environmental requirement when paired with external sense-amplifier front ends.
Recommended
Automotive Lighting Controller
In exterior lighting controllers (headlamp leveling, adaptive driving beam, and LED DRL modules), the S912XDG128F2VAL's PWM channels drive LED drivers and bulb dimming circuits under precise control. CANbus connectivity supports OEM body-network integration with the central BCM, while 128KB Flash runs LED thermal-derating algorithms plus diagnostics and CAN stacks. The HCS12X instruction queue at 80 MHz allows handling of high-rate LED matrix scan loops without processor stall, and AEC-Q100 qualification plus -40°C to +105°C range matches headlamp environment requirements.
Recommended
Recommended Products Summary
Engineering reference data for S912XDG128F2VAL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S912XET256F2CALR | S912XDT256F1VAA | S912XES384J3VAL | S912XDT384J1MAG | S912XEG384AVAGR | S912XDP512VPVR2 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 112-LQFP (20x20) | 112-LQFP | 112-LQFP | 112-LQFP | 112-LQFP | 112-LQFP | 112-LQFP |
| Core | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit | HCS12X 16-bit |
| CPU Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 50 MHz |
| Flash | 128 KB | 256 KB | 256 KB | 384 KB | 384 KB | 384 KB | 512 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB |
| Operating Temperature | -40°C to +105°C | -40°C to +125°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C |
| Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Family-wide pin compatibility with pin-compatible Flash upgrades (vs S912XDT256F1VAA)
- Standardized HCS12X core architecture (vs S912XEG384AVAGR)
- Lower memory cut on the same family - cost optimization (vs S912XDP512VPVR2)
Design Notes
Estimated: At ambient 85°C in a sealed automotive body module, the LQFP-112 (20x20) package dissipates roughly 0.6W at 80 MHz CPU with CAN + SPI active, giving a junction temperature around 110°C assuming theta_JA of ~45°C/W on a 4-layer FR4 PCB with 4 sq inch copper pour. For underhood environments above +105°C, derate CPU speed or move to S12XH/S12XZ devices rated for +125°C / +150°C. Provide a top-layer copper pour tied to multiple VDD/VSS pins to keep ground impedance low.
Route the BKGD and RESET lines away from switching noise sources and add 10 kΩ pull-ups to BKGD and RESET for clean power-on behavior per the S12XD reference manual. Place the bypass network (100 nF ceramic + 4.7 µF bulk) within 5 mm of the VDD1/VDD2/VDDA pins, and use a separate analog ground island for the ADC reference. The PLL_VDD pin requires a dedicated LC filter (typ. 10 µH + 100 nF) to prevent jitter on the internal phase-locked loop. Keep XIRQ and MODC signals accessible for in-circuit BDM programming.
Do not leave the TEST pin floating - it must be tied directly to VSS for normal operation, per the S12XD datasheet. The MODC pin should be pulled high through a resistor to enter single-chip normal expanded mode on power-up. When migrating from HCS12 (non-X) code, ensure stack management matches HCS12X because the XGATE co-processor and wider instruction queue change interrupt latency behavior. Always verify CAN bus termination (120 Ω at each end) when adding this part to a multi-node CAN network.
Compliance Information
AEC-Q100 qualified per distributor listing ('Automotive Qualified'). RoHS compliant per modern LQFP-112 lead-free packaging. Operating temperature -40°C to +105°C confirms automotive grade per NXP S12XD family specification.
