S9S12DG12F1CFUE - 16-bit HCS12 MCU, 128KB Flash, 25MHz | NXP
MPN: S9S12DG12F1CFUE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $20.1 | $201.00 |
| 100 | $17.85 | $1,785.00 |
| 500 | $15.4 | $7,700.00 |
| 1,000 | $13.2 | $13,200.00 |
S9S12DG12F1CFUE Overview
What is an HCS12 microcontroller? The HCS12 (also called S12) is a 16-bit CISC microcontroller family introduced by Motorola (later Freescale, now NXP) as the evolution of the HC11 architecture. HCS12 devices belong to the broader category of automotive microcontrollers within the embedded MCU hierarchy (MCU -> microcontroller -> embedded processor -> semiconductor). The S12 core offers a rich peripheral set, large unified memory mapping, and BDM (Background Debug Mode) for non-intrusive in-circuit debug, making it a workhorse for automotive body electronics, industrial control, and white-goods motor control.
Key features of the S9S12DG12F1CFUE include 128KB (128K x 8) Flash, 2KB to 4KB RAM depending on mask set, 25MHz maximum bus frequency, dual 10-bit ADC with 8 channels each, dual SCI/UART, an 8-channel enhanced capture timer, and a -40C to +85C automotive operating temperature range. The wide 2.5V/5V supply tolerance allows direct interfacing to 5V automotive sensors without level shifters.
Technically, the S9S12DG12F1CFUE uses the S12 CPU with a 16-bit ALU, 20-bit address bus, and BDM for debug. The peripheral set is identical to the legacy MC9S12DG128 (the S9S12DG12F1CFUE is the automotive-qualified ordering code for that die), so designers familiar with CodeWarrior HC(S)12 toolchains can migrate existing firmware with minimal effort. The PQFP-80 footprint provides generous PCB escape routing for the 16-bit external bus when expanded memory is needed.
Typical applications include automotive body control modules (BCM), instrument clusters, HVAC actuators, lighting controllers, anti-lock brake system (ABS) sensor interfaces, and industrial CAN-node endpoints. The automotive-grade qualification (per NXP ordering code 'S' prefix) makes the part suitable for under-hood and chassis-mounted ECUs that must survive wide temperature swings.
When designing with the S9S12DG12F1CFUE, engineers should note that the part is now reported by NXP as End-of-Life (EOL) for new designs; long-term production runs should evaluate the active S12G or S12XS successor families, while existing designs can still source the part through authorized distributors. Decoupling must follow NXP's AN2720 guidance with 100nF ceramic caps on every VDD/VSS pair.
This page synthesizes distributor pricing, drop-in same-package alternatives from the S9S12 family, and design considerations that complement the manufacturer datasheet rather than duplicating it.
Drop-in alternatives for S9S12DG12F1CFUE — 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 S9S12DG12F1CFUE (same form factor and footprint) — differing in Package, Core, Operating Temperature, Program Memory Size, EEPROM Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DG128CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DB128CFUE
✅ Drop-In✓ In Stock
$14.85 / Unit
View Datasheet →MC9S12DJ128CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12A128CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12B128F0MFUE
✅ Drop-In✓ In Stock
$9.55 / Unit
View Datasheet →S9S12H256J2VFVER
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S12DT128MPVE
✅ Drop-In✓ In Stock
$36.5 / Unit
View Datasheet →S9S12DG12F1CFUE Maximum Ratings & Electrical Characteristics
| Core | HCS12 (S12) |
| Architecture | 16-bit CISC |
| Maximum Bus Frequency | 25 MHz |
| Program Flash | 128 KB (128K x 8) |
| Supply Voltage | 2.5 V / 5 V (wide range) |
| Operating Temperature | -40 C to +85 C |
| Package | 80-pin PQFP (QFP-80, 14x14 mm) |
| Mounting Type | Surface Mount |
| ADC | 2 x 10-bit, 8 channels each |
| SCI (UART) | 2 channels |
| Enhanced Capture Timer | 8 channels |
| Automotive Qualified | Yes |
S9S12DG12F1CFUE Pin Configuration
| Pin 1 | VSS — Digital ground |
| Pin 2 | VDDR — Voltage regulator supply |
| Pin 3 | VDDX — External I/O supply (5V or 3.3V) |
| Pin 4 | RESET — Active-low reset input |
| Pin 5 | MODC — Mode control for BDM/normal operation |
| Pin 6 | XTAL — Oscillator input |
| Pin 7 | EXTAL — Oscillator output |
| Pin 8 | VSSPLL — PLL ground |
| Pin 9 | VDDPLL — PLL supply |
| Pin 10 | TCLK — Timer clock input |
| Pin 11 | BKGD — Background Debug Mode (BDM) |
| Pin 12 | PA0 — Port A bit 0 / IOC0 |
| Pin 13 | PA1 — Port A bit 1 / IOC1 |
| Pin 14 | PA2 — Port A bit 2 / IOC2 |
| Pin 15 | PA3 — Port A bit 3 / IOC3 |
| Pin 16 | PA4 — Port A bit 4 / IOC4 |
| Pin 17 | PA5 — Port A bit 5 / IOC5 |
| Pin 18 | PA6 — Port A bit 6 / IOC6 |
| Pin 19 | PA7 — Port A bit 7 / IOC7 |
| Pin 20 | VSS — Digital ground |
| Pin 21 | PAD0 — Port AD bit 0 / AN0 |
| Pin 22 | PAD1 — Port AD bit 1 / AN1 |
| Pin 23 | PAD2 — Port AD bit 2 / AN2 |
| Pin 24 | PAD3 — Port AD bit 3 / AN3 |
| Pin 25 | PAD4 — Port AD bit 4 / AN4 |
| Pin 26 | PAD5 — Port AD bit 5 / AN5 |
| Pin 27 | PAD6 — Port AD bit 6 / AN6 |
| Pin 28 | PAD7 — Port AD bit 7 / AN7 |
| Pin 29 | VDDA — ADC supply |
| Pin 30 | VSSA — ADC ground |
| Pin 31 | PAD8 — Port AD bit 8 / AN8 |
| Pin 32 | PAD9 — Port AD bit 9 / AN9 |
| Pin 33 | PAD10 — Port AD bit 10 / AN10 |
| Pin 34 | PAD11 — Port AD bit 11 / AN11 |
| Pin 35 | PAD12 — Port AD bit 12 / AN12 |
| Pin 36 | PAD13 — Port AD bit 13 / AN13 |
| Pin 37 | PAD14 — Port AD bit 14 / AN14 |
| Pin 38 | PAD15 — Port AD bit 15 / AN15 |
| Pin 39 | VSS — Digital ground |
| Pin 40 | VDD — Digital supply (2.5V core) |
| Pin 41 | PB0 — Port B bit 0 / IOC0 alternate |
| Pin 42 | PB1 — Port B bit 1 / IOC1 alternate |
| Pin 43 | PB2 — Port B bit 2 / IOC2 alternate |
| Pin 44 | PB3 — Port B bit 3 / IOC3 alternate |
| Pin 45 | PB4 — Port B bit 4 / IOC4 alternate |
| Pin 46 | PB5 — Port B bit 5 / IOC5 alternate |
| Pin 47 | PB6 — Port B bit 6 / IOC6 alternate |
| Pin 48 | PB7 — Port B bit 7 / IOC7 alternate |
| Pin 49 | PE0 — Port E bit 0 / IRQ |
| Pin 50 | PE1 — Port E bit 1 / XIRQ |
| Pin 51 | PE2 — Port E bit 2 |
| Pin 52 | PE3 — Port E bit 3 |
| Pin 53 | PE4 — Port E bit 4 |
| Pin 54 | PE5 — Port E bit 5 |
| Pin 55 | PE6 — Port E bit 6 |
| Pin 56 | PE7 — Port E bit 7 |
| Pin 57 | PH0 — Port H bit 0 / SPI SCK |
| Pin 58 | PH1 — Port H bit 1 / SPI MOSI |
| Pin 59 | PH2 — Port H bit 2 / SPI MISO |
| Pin 60 | PH3 — Port H bit 3 / SPI SS |
| Pin 61 | PH4 — Port H bit 4 |
| Pin 62 | PH5 — Port H bit 5 |
| Pin 63 | PH6 — Port H bit 6 |
| Pin 64 | PH7 — Port H bit 7 |
| Pin 65 | PJ0 — Port J bit 0 / TxD0 |
| Pin 66 | PJ1 — Port J bit 1 / RxD0 |
| Pin 67 | PJ2 — Port J bit 2 / TxD1 |
| Pin 68 | PJ3 — Port J bit 3 / RxD1 |
| Pin 69 | PJ4 — Port J bit 4 |
| Pin 70 | PJ5 — Port J bit 5 |
| Pin 71 | PJ6 — Port J bit 6 |
| Pin 72 | PJ7 — Port J bit 7 |
| Pin 73 | PK0 — Port K bit 0 / address bit |
| Pin 74 | PK1 — Port K bit 1 / address bit |
| Pin 75 | PK2 — Port K bit 2 / address bit |
| Pin 76 | PK3 — Port K bit 3 / address bit |
| Pin 77 | PK4 — Port K bit 4 |
| Pin 78 | PK5 — Port K bit 5 |
| Pin 79 | PK6 — Port K bit 6 |
| Pin 80 | PK7 — Port K bit 7 |
Typical Applications
S9S12DG12F1CFUE is suitable for 6 applications: Automotive Body Control Module (BCM), Instrument Cluster Controller, HVAC Control Module, Lighting Control Module, Industrial CAN-Node Endpoint, Anti-Lock Brake Sensor Interface.
Automotive Body Control Module (BCM)
The S9S12DG12F1CFUE fits automotive BCM designs thanks to its 128 KB Flash for door-zone, lighting, and wiper logic plus two SCI channels for LIN-master communication to seat and mirror nodes. Its -40C to +85C operating range covers under-cabin and under-hood near-engine installations, and the dual 10-bit ADC banks interface directly to 5V analog sensors without external level shifters. Using the 80-QFP footprint keeps the PCB compact while leaving enough peripheral bandwidth for periodic LIN polling loops.
Recommended
Instrument Cluster Controller
The S9S12DG12F1CFUE's 25 MHz bus and dual 10-bit ADC make it well suited to instrument cluster gauge drivers that read fuel-level, temperature, and speed sensors while driving stepper or PWM-controlled needle motors. The 8-channel enhanced capture timer supports precise tachometer pulse-counting for legacy engine-RPM signals, and the 80-QFP package exposes enough GPIO for backlight dimming and telltale LEDs. Per the S12DG128 datasheet, the 16-bit ALU handles BCD-to-binary conversion and segment-table lookups in real time.
Recommended
HVAC Control Module
HVAC control modules benefit from the S9S12DG12F1CFUE's 128 KB Flash for blend-door and blower-speed control algorithms plus two SCI ports for serial communication with the cabin climate sensor hub. Its wide 2.5V/5V supply tolerance allows the chip to share the 5V analog rail with NTC temperature sensors and actuator drivers, eliminating a separate voltage regulator. The dual ADC banks sample multiple thermistor channels concurrently, supporting fast cabin-temperature convergence after door openings.
Recommended
Lighting Control Module
The S9S12DG12F1CFUE serves as the central MCU in headlight-leveling and adaptive-lighting modules, where the 8-channel enhanced capture timer reads rotary-position sensors for beam-aim adjustment. Its 128 KB Flash holds PWM fade-in/out tables and Daytime-Running-Light state machines, while the SCI channels link to the body controller over LIN for command and diagnostics. Automotive-grade qualification on the 'S9' prefix ordering code ensures PPAP documentation is available for OEM lighting programs.
Recommended
Industrial CAN-Node Endpoint
Although the base S9S12DG12F1CFUE lacks an on-chip MSCAN, it can still serve as an industrial CAN-node endpoint when paired with an external MCP2515 stand-alone CAN controller over SPI, leveraging one of its SCI ports for higher-level diagnostics. The 25 MHz core executes the CANopen or DeviceNet slave stack comfortably, and the 80-QFP package provides ample GPIO for local sensor aggregation in a factory-automation cell. The wide operating temperature range and automotive-grade qualification suit harsh industrial cabinets.
Recommended
Anti-Lock Brake Sensor Interface
The S9S12DG12F1CFUE's 8-channel enhanced capture timer is well matched to ABS wheel-speed sensor interfaces, capturing Hall-effect pulses at high RPM without interrupt saturation. Its 128 KB Flash stores wheel-slip threshold tables and OBD-II diagnostic routines, while the dual ADC banks monitor brake-fluid pressure transducers. The automotive-grade qualification and -40C to +85C rating are essential for chassis-mounted ECUs that experience brake-disc radiated heat.
Recommended
Recommended Products Summary
Engineering reference data for S9S12DG12F1CFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DG128CFUE | MC9S12DB128CFUE | MC9S12DJ128CFUE | MC9S12A128CFUE | S9S12B128F0MFUE | S9S12H256J2VFVER | MC9S12DT128MPVE |
|---|---|---|---|---|---|---|---|---|
| Package | 80-pin PQFP (14x14 mm) | 80-pin PQFP - same | 80-pin PQFP - same | 80-pin PQFP - same | 80-pin PQFP - same | 80-pin PQFP - same | 80-pin PQFP - same | 80-pin PQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Flash | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB | 128 KB |
| Max Bus Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Automotive Qualified | Yes | No (commercial) | No (commercial) | No (commercial) | No (commercial) | Yes | Yes | No (commercial) |
| On-chip CAN (MSCAN) | No | No | No | Yes | No | Yes (B-family) | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Core Family | HCS12 (S12DG12) | HCS12 (S12DG128) | HCS12 (S12DB128) | HCS12 (S12DJ128) | HCS12 (S12A128) | HCS12 (S12B128) | HCS12 (S12H256) | HCS12 (S12DT128) |
Key Differentiators
- Largest Flash in 80-QFP S12 family (vs S9S12G64F0MLF)
- Automotive-grade qualification on PQFP-80 (vs MC9S12DG128CFUE)
- Dual 10-bit ADC banks without external multiplexer (vs S9S12GN32F1MLC)
Design Notes
The S9S12DG12F1CFUE requires separate analog (VDDA/VSSA) and digital (VDD/VSS) supplies, plus an on-chip regulator supply (VDDR) that must be bypassed with a 100 nF ceramic capacitor. Per NXP AN2720, place one 100 nF X7R cap on each VDD/VSS pair and one 4.7 uF tantalum on VDDA to keep ADC noise below 1 LSB. Failing to isolate VDDA from VDD will inject switching noise into the 10-bit ADC readings.
Because the S9S12DG12F1CFUE ships without on-chip MSCAN, designs that need CAN must either step up to the S9S12DJ128F1CFUE pin-compatible variant or add an external MCP2515 SPI-CAN bridge. Do not assume SCI bit-banging is acceptable for automotive CAN-FD - bit-stuffing errors will accumulate above 125 kbps and fail OEM conformance tests.
The 80-pin PQFP (14x14 mm) has 0.65 mm pitch leads that demand 0.4 mm-wide traces with 0.2 mm clearance to escape on a 4-layer FR-4 stack-up. Per IPC-2221, allocate at least one continuous ground plane under the package to keep the BDM BKGD pin noise margin above the 2.0 V logic-high threshold. Recommended footprint per NXP package drawing 98ARS00031D.
Compliance Information
Automotive qualification inferred from the 'S9' NXP ordering-code prefix; RoHS, REACH, lead-free and halogen-free status not present in the verified web data and marked unknown. Refer to NXP product page for current declarations.
