MC9S12DG128MFUE - 16-Bit HCS12 MCU 128KB Flash 25MHz | NXP
MPN: MC9S12DG128MFUE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.45 | $18.45 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.95 | $5,975.00 |
| 1,000 | $10.5 | $10,500.00 |
MC9S12DG128MFUE Overview
A 16-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU core, memory, and peripheral interfaces on a single die. The HCS12 core is a CISC architecture derived from the Motorola/Freescale HC12, widely adopted in automotive body electronics. Within the system hierarchy, the MC9S12DG128MFUE sits as an automotive-grade MCU inside the S12 microcontroller family, embedded under the broader semiconductor category. Its 128 KB Flash allows field-reprogrammable application code, while the integrated 10-bit ADC, PWM, and SCI peripherals reduce BOM cost.
Key features include: up to 25 MHz bus clock, 8-channel 10-bit ADC, 8-channel PWM, two SCI (UART) interfaces, one SPI, one IIC, 59 general-purpose digital I/O lines, background debug mode (BDM), and on-chip voltage regulator for single 5V supply operation. The device integrates a periodic interrupt timer, real-time interrupt, and 8-channel enhanced capture timer supporting input capture and output compare functions.
Architecturally, the HCS12 core uses a 16-bit data path with 20-bit addressing capability (paged memory), enabling 1 MB linear address space. The CPU executes a subset of the HC11 instruction set plus additional instructions (MOVB, MOVW, EXG, etc.), supporting both C and assembly development. The on-chip voltage regulator simplifies PCB design by allowing a single 5 V rail while internally generating the 2.5 V core voltage.
Typical applications include automotive body controllers, instrument cluster nodes, HVAC control modules, lighting controllers, door/seat modules, and CAN/LIN multiplexing nodes. The robust peripheral mix and automotive temperature range make it well suited for under-hood and cabin electronics.
When designing with this device, ensure BDM debug header (BKGD, RESET, MODC pins) is accessible for production programming. The single 5 V supply simplifies power design, but decoupling must follow NXP reference layout. Per the verified data, the part is currently in NRND (Not Recommended for New Designs) lifecycle status as of 2026-10-17.
This page consolidates distributor pricing, drop-in alternatives within the HCS12 family, and practical design guidance not found in the standalone manufacturer datasheet.
Drop-in alternatives for MC9S12DG128MFUE — 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 MC9S12DG128MFUE (same form factor and footprint) — differing in Package, Debug Interface, EEPROM Size, RAM Size, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DG128CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DG128VFUE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S12A256CFUE
✅ Drop-In✓ In Stock
$47.08 / Unit
View Datasheet →MC9S12B128CFUE
✅ Drop-In✓ In Stock
$14.85 / Unit
View Datasheet →MC9S12DJ64CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12XEP100MAL
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DG128MFUE Maximum Ratings & Electrical Characteristics
| Core | HCS12 (CISC, 16-bit) |
| Maximum CPU Frequency | 25 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 8 KB |
| EEPROM | 2 KB |
| Data Bus Width | 16 bit |
| Supply Voltage | 2.35 V to 2.75 V (core); single 5 V supply with on-chip regulator |
| I/O Pins | 59 (discrete digital I/O lines) |
| ADC | 2 x 8-channel, 10-bit |
| PWM Channels | 8 |
| SCI (UART) | 2 |
| SPI | 1 |
| IIC (I2C) | 1 |
| Timers | Enhanced Capture Timer (8-channel IC/OC), PIT, RTI |
| Operating Temperature Range | -40C to +125C (automotive grade, MC suffix) |
| Package | LQFP-80 (14x14 mm), FUE suffix |
| Mounting Type | Surface Mount |
| Debug Interface | Background Debug Mode (BDM) |
| On-chip Voltage Regulator | Yes (single 5 V supply) |
| RoHS Status | Compliant |
MC9S12DG128MFUE lqfp-80 (14x14 mm), fue suffix Pin Configuration Guide
Pin configuration for MC9S12DG128MFUE (lqfp-80 (14x14 mm), fue suffix 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 MC9S12DG128MFUE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S12DG128MFUE is suitable for 6 applications: Automotive Body Control Module, Instrument Cluster Display Controller, HVAC Control Module, Automotive Lighting Controller, Door/Seat/Window Module, Industrial Multiplexing Node.
Automotive Body Control Module
The MC9S12DG128MFUE fits automotive body control modules (BCMs) because it provides 59 GPIO for interfacing with discrete switches, lamps, and relays, plus 8 PWM channels for dimming and motor speed control. At 25 MHz HCS12 core speed and 128 KB Flash, the part handles central body functions (interior lighting, wiper control, door lock coordination) without external memory. The single 5V supply rail with on-chip 2.5V regulator simplifies PCB design, while the -40C to +125C operating range tolerates cabin and under-hood thermal stress. Designers typically pair it with LIN transceivers (e.g., TJA1027) on the SCI ports for body-domain networking. Compared to modern S32K1xx Cortex-M parts, the DG128 offers mature HCS12 toolchains and lower unit cost for established designs.
Recommended
Instrument Cluster Display Controller
For instrument cluster applications, the MC9S12DG128MFUE's dual 8-channel 10-bit ADC reads analog gauge sensors (fuel level, temperature, oil pressure) directly, while the enhanced capture timer precisely times speedometer and tachometer pulse inputs from the vehicle bus. The 128 KB Flash holds gauge calibration tables, warning logic, and segment LCD driving routines. The BDM interface enables production-line calibration of cluster variants without removing the MCU. While it lacks an integrated LCD controller, designers add an external segment driver (e.g., PCF8566) on the SPI port. The automotive temperature grade (-40C to +125C) ensures stable operation behind the dashboard where ambient temperatures can exceed 85C. For full-color TFT clusters, migrate to the S12XEP100MAL with its larger memory budget.
Recommended
HVAC Control Module
The MC9S12DG128MFUE serves as the main controller in HVAC (heating, ventilation, air conditioning) modules thanks to its 8 PWM channels for driving blower motor speed and blend/air mode actuators, plus ADC channels for cabin temperature and humidity sensor inputs. The HCS12 core executes closed-loop PID control for cabin climate stability within tight settling-time requirements. With 8 KB RAM the part handles communication buffers for LIN/CAN messaging and real-time control loops simultaneously. The single-supply 5V operation eliminates multi-rail complexity in the HVAC housing. The 25 MHz core is sufficient for HVAC logic but newer S12K/S32K Cortex-M parts offer better code density and faster interrupt response for advanced multi-zone climate systems.
Recommended
Automotive Lighting Controller
For exterior and interior lighting modules (headlamp leveling, DRL, ambient lighting, turn signal repeaters), the MC9S12DG128MFUE delivers 8 PWM channels with programmable duty cycle and frequency for smooth brightness transitions. The 59 GPIO lines connect to switch inputs (high beam, fog lamps, indicators) and drive FET gate drivers via PWM outputs. The 128 KB Flash stores fade-in/fade-out curves and adaptive lighting algorithms. LIN connectivity on SCI ports allows integration into body networks for central lighting control. Operating temperature -40C to +125C supports exterior-mounted lighting modules. For matrix-LED or pixel-LED headlamps requiring faster control loops and CAN FD, consider migrating to S32K144.
Recommended
Door/Seat/Window Module
Door, seat, and window control modules use the MC9S12DG128MFUE because it integrates 59 GPIO for switch scanning and motor direction control, plus PWM channels for window anti-pinch current profiling. The 8 KB RAM and 128 KB Flash accommodate anti-pinch algorithms, seat position memory, and mirror adjustment routines. The HCS12 core at 25 MHz is sufficient for real-time window obstruction detection via current sensing ADC inputs. SCI ports connect to the body network via LIN, while the BDM interface supports production end-of-line programming and variant configuration. The automotive temperature grade handles door-mounted thermal stress. Drop-in alternatives include the MC9S12B128CFUE for slight peripheral re-mapping without changing the PCB.
Recommended
Industrial Multiplexing Node
Beyond automotive, the MC9S12DG128MFUE functions as a robust industrial multiplexing node for sensor aggregation and actuator control. Its HCS12 core, dual SCI, SPI, and IIC interfaces support multiple fieldbus protocols concurrently. The 8 PWM channels drive proportional valves, heaters, and indicator LEDs; the 10-bit ADC reads analog sensors. With 128 KB Flash and 2 KB EEPROM, complex ladder-logic replacement or PID control code fits easily. The automotive temperature range exceeds typical factory-ambient requirements, providing margin in harsh enclosures. The BDM debug port simplifies field service and firmware updates. For new designs, weigh the NRND status against newer S12X or S32K Cortex-M parts.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DG128MFUE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DG128CFUE | MC9S12DG128VFUE | MC9S12A256CFUE | MC9S12B128CFUE | MC9S12DJ64CFUE | MC9S12XEP100MAL |
|---|---|---|---|---|---|---|---|
| Package | LQFP-80 (14x14 mm) | LQFP-80 (14x14 mm) - same | LQFP-80 (14x14 mm) - same | LQFP-80 (14x14 mm) - same | LQFP-80 (14x14 mm) - same | LQFP-80 (14x14 mm) - same | LQFP-80 (14x14 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12 (16-bit CISC) | HCS12X (enhanced, 16-bit) |
| Max CPU Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 128 KB | 64 KB | 1 MB |
| RAM | 8 KB | 8 KB | 8 KB | 12 KB | 8 KB | 4 KB | 64 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 4 KB | 2 KB | 1 KB | 4 KB |
| GPIO Count | 59 | 59 | 59 | 59 | 59 | 59 | 59 |
| CAN Controller | No | No | No | No | No | Yes (MSCAN) | Yes (4x MSCAN) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- FUE package code with MC automotive temperature grade (vs MC9S12DG128CFUE)
- Mature HCS12 toolchain and software library (vs MC9S12XEP100MAL)
- No CAN controller - true D-family base variant (vs MC9S12DJ64CFUE)
- Higher Flash density than DJ64 (vs MC9S12DJ64CFUE)
Design Notes
The MC9S12DG128MFUE accepts a single external 5 V supply on VDDR/VSSX and internally regulates to 2.5 V for the core. Place a 100 nF decoupling capacitor on each VDD/VSS pair, plus a 10 uF bulk capacitor near the VDDR pin per the NXP reference design. The internal regulator requires the VDDF pin to be decoupled with a 100 nF capacitor; insufficient decoupling can cause core voltage instability under high GPIO switching load. Avoid drawing large transient currents from the same 5 V rail as the MCU without sufficient bulk capacitance.
Follow NXP's recommended PCB layout for the LQFP-80 package: use 4-layer board with continuous ground plane under the MCU, route oscillator traces (XTAL/EXTAL) with short, symmetrical lengths and minimal vias, and keep the BDM header (BKGD, RESET, MODC) accessible at the board periphery for production programming. The exposed thermal pad (if present in LQFP-80 variant) should be soldered to a thermal copper pour connected to the ground plane to reduce junction temperature under high GPIO switching load.
Do not leave the MODC pin floating - tie it to VDD through a 10 kohm pull-up to select normal single-chip mode, or to GND to select special modes. Background Debug Mode (BDM) is the only supported in-application programming interface on this device; production fixtures must break out the BKGD, RESET, and VDD pins. When migrating from the DG128MFUE to the DG128CFUE or DG128VFUE, verify pin-for-pin compatibility with the PCB footprint and check the package code marking; package codes FUE, CFE, VFE differ in lead finish or tray orientation but share the same die and pinout.
Compliance Information
RoHS and REACH compliant per NXP product page. AEC-Q100 not formally qualified at part level (automotive temperature grade MC suffix). Lead-free reflow compatible. Conflict-minerals compliant per NXP supplier declarations.
