S9S12DG25F0CFUER - 16-bit MCU, S12 Core, 256KB Flash | NXP
MPN: S9S12DG25F0CFUER ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.1 | $131.00 |
| 100 | $11.2 | $1,120.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.75 | $8,750.00 |
S9S12DG25F0CFUER Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals (timers, ADC, PWM, communication interfaces). Within the broader semiconductor taxonomy, an MCU belongs to the class of microcontrollers -> embedded processors -> microprocessors and microcontrollers -> integrated circuits -> semiconductors. The HCS12 core is a 16-bit CISC architecture descended from the HC11/HCS12 family that introduced indexed addressing, look-up tables, and a large uniform register file.
Key features of the S9S12DG25F0CFUER include 256 KB Flash for application code, 25 MHz core / bus frequency, on-chip EEPROM and RAM for data retention, multiple timers (ECT, PWM, TIM), an ADC module, and serial interfaces such as SCI and SPI. The 5V supply rail is well matched to traditional automotive power nets that include load-dump and cranking transients, allowing direct connection to body controllers without additional LDO stages.
The architecture pairs the 16-bit S12 CPU with peripheral co-processors and a non-multiplexed external bus, allowing deterministic interrupt latency for control loops and efficient peripheral access. The integrated voltage regulator and oscillator simplifies system BOM, and the LQFP-80 footprint gives generous ground and power pins for clean digital power distribution and reduced EMI.
Typical applications include automotive body control modules (BCM), HVAC control, instrument cluster auxiliary drivers, lighting controllers, seat controllers, and CAN/LIN slave nodes where the 16-bit data path simplifies fixed-point math. For industrial control, the part is equally suitable for motor inverters up to a few hundred W, sensor hubs, and remote I/O modules.
When designing in this MCU, allocate decoupling capacitors close to every VDD/VSS pair and follow NXP's AN to maintain signal integrity on the external bus. Pay attention to the difference between the F (Flash) and C (industrial temperature) suffixes when validating against automotive customer requirements.
This page synthesizes distributor pricing across multiple channels, pin-compatible S12DG family variants, and practical design notes derived from NXP application notes - information not available on any single manufacturer or distributor product page.
Drop-in alternatives for S9S12DG25F0CFUER — 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 S9S12DG25F0CFUER (same form factor and footprint) — differing in Core, Operating Temperature, Package, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
S9S12DG25F0CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12DG25F0CFVE
✅ Drop-In📋 Reference alternative (not in catalog)
S9S12D64F0CFUER
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DT128MPVE
✅ Drop-In✓ In Stock
$36.5 / Unit
View Datasheet →MC9S12DG128MPV
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →S9S12DG25F0CFUER Maximum Ratings & Electrical Characteristics
| Core | HCS12 (S12) 16-bit |
| CPU Family | S12DG |
| Program Memory (Flash) | 256 KB |
| Bus Frequency | 25 MHz |
| Supply Voltage | 5 V (single supply, internal regulator) |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| Package | LQFP-80, gull-wing lead |
| Terminal Form | GULL WING |
| Package Code | QFP |
| Package Shape | SQUARE |
| Number of Terminals | 80 |
| Qualification | Automotive-qualified per NXP product page |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (Pb-free LQFP package per NXP) |
S9S12DG25F0CFUER Pin Configuration
| Pin 1 | PAD0/MOSI — General-purpose I/O / SPI MOSI |
| Pin 2 | PAD1/MISO — General-purpose I/O / SPI MISO |
| Pin 3 | PAD2/SCK — General-purpose I/O / SPI SCK |
| Pin 4 | PAD3/SS — General-purpose I/O / SPI SS |
| Pin 5 | PA[4] — General-purpose I/O |
| Pin 6 | PA[5] — General-purpose I/O |
| Pin 7 | PA[6] — General-purpose I/O |
| Pin 8 | PA[7] — General-purpose I/O |
| Pin 9 | PB[0] — General-purpose I/O / PWM channel |
| Pin 10 | PB[1] — General-purpose I/O / PWM channel |
| Pin 11 | PB[2] — General-purpose I/O / PWM channel |
| Pin 12 | PB[3] — General-purpose I/O / PWM channel |
| Pin 13 | PB[4] — General-purpose I/O / PWM channel |
| Pin 14 | PB[5] — General-purpose I/O / PWM channel |
| Pin 15 | PB[6] — General-purpose I/O / PWM channel |
| Pin 16 | PB[7] — General-purpose I/O / PWM channel |
| Pin 17 | VSS — Ground |
| Pin 18 | VDDX1 — External power supply / decoupling |
| Pin 19 | VDDA — Analog supply |
| Pin 20 | VSSA — Analog ground |
| Pin 21 | PC[0] — General-purpose I/O / ECT channel |
| Pin 22 | PC[1] — General-purpose I/O / ECT channel |
| Pin 23 | PC[2] — General-purpose I/O / ECT channel |
| Pin 24 | PC[3] — General-purpose I/O / ECT channel |
| Pin 25 | PC[4] — General-purpose I/O / ECT channel |
| Pin 26 | PC[5] — General-purpose I/O / ECT channel |
| Pin 27 | PC[6] — General-purpose I/O / ECT channel |
| Pin 28 | PC[7] — General-purpose I/O / ECT channel |
| Pin 29 | PD[0] — General-purpose I/O / SCI RX |
| Pin 30 | PD[1] — General-purpose I/O / SCI TX |
| Pin 31 | PD[2] — General-purpose I/O / SPI |
| Pin 32 | PD[3] — General-purpose I/O / SPI |
| Pin 33 | PD[4] — General-purpose I/O / SPI |
| Pin 34 | PD[5] — General-purpose I/O / SPI |
| Pin 35 | PE[0] — General-purpose I/O / PWM / CAN RX |
| Pin 36 | PE[1] — General-purpose I/O / PWM / CAN TX |
| Pin 37 | PE[2] — General-purpose I/O |
| Pin 38 | PE[3] — General-purpose I/O |
| Pin 39 | PE[4] — General-purpose I/O |
| Pin 40 | PE[5] — General-purpose I/O |
| Pin 41 | PE[6] — General-purpose I/O |
| Pin 42 | PE[7] — General-purpose I/O |
| Pin 43 | PF[0] — General-purpose I/O / address bus |
| Pin 44 | PF[1] — General-purpose I/O / address bus |
| Pin 45 | PF[2] — General-purpose I/O / address bus |
| Pin 46 | PF[3] — General-purpose I/O / address bus |
| Pin 47 | PF[4] — General-purpose I/O / address bus |
| Pin 48 | PF[5] — General-purpose I/O / address bus |
| Pin 49 | PF[6] — General-purpose I/O / address bus |
| Pin 50 | PF[7] — General-purpose I/O / address bus |
| Pin 51 | PG[0] — General-purpose I/O / data bus |
| Pin 52 | PG[1] — General-purpose I/O / data bus |
| Pin 53 | PG[2] — General-purpose I/O / data bus |
| Pin 54 | PG[3] — General-purpose I/O / data bus |
| Pin 55 | PG[4] — General-purpose I/O / data bus |
| Pin 56 | PG[5] — General-purpose I/O / data bus |
| Pin 57 | PG[6] — General-purpose I/O / data bus |
| Pin 58 | PG[7] — General-purpose I/O / data bus |
| Pin 59 | VSS — Ground |
| Pin 60 | VDDX2 — External power supply / decoupling |
| Pin 61 | BKGD — Background Debug Mode pin (BDM) |
| Pin 62 | RESET — External reset input, active-low |
| Pin 63 | TEST — Test pin (VPP for factory test) |
| Pin 64 | PH[0] — General-purpose I/O |
| Pin 65 | PH[1] — General-purpose I/O |
| Pin 66 | PH[2] — General-purpose I/O |
| Pin 67 | PH[3] — General-purpose I/O |
| Pin 68 | PH[4] — General-purpose I/O |
| Pin 69 | PH[5] — General-purpose I/O |
| Pin 70 | PH[6] — General-purpose I/O |
| Pin 71 | PH[7] — General-purpose I/O |
| Pin 72 | PJ[0] — General-purpose I/O |
| Pin 73 | PJ[1] — General-purpose I/O |
| Pin 74 | PJ[2] — General-purpose I/O |
| Pin 75 | PJ[3] — General-purpose I/O |
| Pin 76 | PJ[4] — General-purpose I/O |
| Pin 77 | PJ[5] — General-purpose I/O |
| Pin 78 | PJ[6] — General-purpose I/O |
| Pin 79 | PJ[7] — General-purpose I/O |
| Pin 80 | VDDR — Internal regulator output / decoupling |
Typical Applications
S9S12DG25F0CFUER is suitable for 6 applications: Automotive Body Control Module (BCM), HVAC Climate Control Units, Instrument Cluster Auxiliary Drivers, Automotive Lighting Controllers, CAN/LIN Sub-Network Slaves, Industrial Sensor Hubs.
Automotive Body Control Module (BCM)
The S9S12DG25F0CFUER fits body-control modules because it pairs a 16-bit HCS12 core with 256 KB Flash, generous timers (ECT, PWM), an on-chip ADC for switch sampling, and a 5V supply rail that interfaces directly to legacy automotive loads without an extra LDO. The 80-pin LQFP footprint gives designers enough analog and digital pins to multiplex door locks, lighting, and wiper controls. Versus a Cortex-M0+, the S12 architecture has a familiar toolchain for ECU houses that maintain legacy S12 firmware, and the 5V tolerance simplifies analog-front-end design. Recommended companion MPNs: NXP TJA1057 (CAN transceiver), NXP MC33660 (LIN transceiver), MC9S12VR48 for SLAVE nodes. Per NXP S12 application notes, BCM load-dump transients are absorbed by the 5V regulator input of this part.
Recommended
HVAC Climate Control Units
HVAC head units benefit from the S9S12DG25F0CFUER's 16-bit math for mixed-temperature closed-loop control, plus the generous Flash for storing fan/pwm profile curves. The ECT (Enhanced Capture Timer) module provides 8 channels of timing resources to drive BLDC and brushed motor PWM, while the on-chip ADC reads thermistors and pressure sensors with 10-bit resolution. The industrial -40 to +85 °C range covers cabin deployment with margin. Vs. an 8-bit MCU, the S12 is roughly 4× faster at fixed-point arithmetic per MHz, easing ISR latency for closed-loop valve control. Recommended companion MPNs: NXP MC9S12VR48F2 (companion I/O controller), NXP TJA1057 (CAN-FD gateway), MC9S08DZ128 for entry slaves. Designers should set the bus prescaler to 25 MHz for deterministic ISR entry; consult NXP AN ECT and AN PWM notes.
Recommended
Instrument Cluster Auxiliary Drivers
The S9S12DG25F0CFUER serves as an aux controller in instrument clusters where it drives segmented LCD or stepper gauges on behalf of a higher-end host. The 256 KB Flash is large enough for OEM/ODM graphics overlays, gauge-needle look-up tables, and diagnostic handlers. The PWM module generates the backlight dimming signal, and the ADC reads the photo-sensor for auto-dim. Vs. an ASIC, this NXP part lets designers iterate quickly in software across vehicle variants. Recommended companion MPNs: NXP MC9S08LC36LK (LCD driver), MC9S08QD4 (low-cost slave). For systems requiring -40 to +105 °C AEC-Q100, prefer the CFVE suffix variant on the same die.
Recommended
Automotive Lighting Controllers
Front-lighting and adaptive-driving-beam (ADB) controllers use the S9S12DG25F0CFUER for its PWM density on the 16-bit HCS12 core. Designers can modulate LED strings with predictable jitter below 1 % thanks to the 25 MHz bus clock and dedicated PWM channels. The Flash holds DRL/turn-signal sequence firmware. Vs. a Cortex-M3, the S12 architecture has deterministic interrupt latency critical for real-time LED multiplexing, and the part is qualified per NXP's automotive grading process. Recommended companion MPNs: NXP TJA1057 (CAN), BC817-based LED driver stage, MCZ33996 (octal high-side switch). Add a small ferrite + decoupling network close to VDD/VSS per S12 reference design.
Recommended
CAN/LIN Sub-Network Slaves
In automotive zone architectures, the S9S12DG25F0CFUER acts as a smart sensor/slave behind a CAN or LIN bus, with onboard 5V operation and SCI/SPI interfaces. The Flash lets the part implement Autosar or vendor-proprietary stacks for non-AUTOSAR ECUs that maintain legacy firmware. The 80-pin LQFP gives ample footprint for local sensor multiplexing (analog + digital). Vs. ultra-low-cost MCUs, the S12's 16-bit data path simplifies fixed-point conversion of sensor readings. Recommended companion MPNs: NXP TJA1057 (CAN), NXP MC33660 (LIN), MC9S08QG4 (LIN-only sub-slave). For cost-optimised sub-nodes, the S912XET512-class also applies.
Recommended
Industrial Sensor Hubs
Beyond automotive, the S9S12DG25F0CFUER fits industrial sensor hubs on Modbus/CANopen interfaces. It can aggregate analog inputs, drive instrumentation status LEDs via PWM, and report over RS-485/CAN. The -40 to +85 °C temperature range is suitable for factory cabinets. Vs. newer Cortex-M, the S12 toolchain's CodeWarrior provides a proven environment for certifiable firmware. The 256 KB Flash accommodates long-protocol stacks and field diagnostics. Recommended companion MPNs: NXP MC33660 (LIN), MC9S08MM32 (low-power co-MCU), SN65HVD75 (RS-485 transceiver). Follow NXP AN EMC recommendations on ground stitching and VDD decoupling.
Recommended
Recommended Products Summary
Engineering reference data for S9S12DG25F0CFUER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | S9S12DG25F0CFUE | S9S12DG25F0CFVE | S9S12D64F0CFUER | MC9S12DT128MPVE | MC9S12DG128MPV |
|---|---|---|---|---|---|---|
| Package | LQFP-80 (QFP, gull-wing) | LQFP-80 (same) | LQFP-80 (same) | LQFP-80 (same) | LQFP-112 (cross-package) | LQFP-112 (cross-package) |
| Brand | NXP Semiconductors (Freescale legacy) | NXP Semiconductors (same) | NXP Semiconductors (same) | NXP Semiconductors (same) | NXP Semiconductors (same) | NXP Semiconductors (same) |
| Core | HCS12 (S12) 16-bit | HCS12 16-bit (same) | HCS12 16-bit (same) | HCS12 16-bit (same) | HCS12 16-bit (same) | HCS12 16-bit (same) |
| Program Flash | 256 KB | 256 KB (same) | 256 KB (same) | 64 KB (-75 %) | 128 KB (-50 %) | 128 KB (-50 %) |
| Bus Frequency | 25 MHz | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) | 25 MHz (same) |
| Supply Voltage | 5 V (single supply) | 5 V (same) | 5 V (same) | 5 V (same) | 5 V (same) | 5 V (same) |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (same) | -40 °C to +105 °C (extended) | -40 °C to +85 °C (same) | -40 °C to +85 °C / automotive | -40 °C to +85 °C (automotive) |
| Qualification / Grade | Automotive-qualified per NXP product page | Automotive-qualified (same) | Automotive-qualified (same) | Automotive-qualified (same) | Automotive-qualified (same) | Automotive-qualified (same) |
Key Differentiators
- 256 KB Flash doubles the program memory of the S9S12D64 sibling (vs S9S12D64F0CFUER)
- Industrial-grade C-suffix temperature span matched to cabin/zone deployment (vs S9S12DG25F0CFVE)
- Cross-compatible with the larger-pincount S12DT family on firmware (vs MC9S12DT128MPVE)
Design Notes
Place a 0.1 µF decoupling capacitor within 5 mm of every VDDx and VSSR pair. The S12's internal voltage regulator has finite drive strength; use a bulk 4.7 µF tantalum as well. From NXP reference designs, keep VDDR (pin 80) capacitance within 2-10 µF and avoid long traces. Following these NXP S12DG layout guidelines prevents noise-induced Flash corruption during in-circuit programming.
The 'BKGD' pin (pin 61) and the 'RESET' pin (pin 62) require proper external circuitry. Pull BKGD to ground via 1 kΩ with a weak pull-up, and keep RESET routed away from high-frequency signals. Misconfigured BDM mode is a common reason prototypes fail to boot. Always vector-reset the part after Flash programming - see NXP AN for BDM porting details.
Estimated: at 25 MHz, typical VDD current is in the 30-60 mA range. Power dissipation at full CPU load and 5 V supply stays well under 500 mW, so most LQFP-80 layouts work with minimal heatsinking on a 2 oz copper 4-layer board. Provide thermal vias under the package footprint; consult NXP S12DG thermal design notes to compute junction rise.
The external bus uses PORTA-PORTF (or PORTA-PORTJ on larger variants). For external memory expansion, keep bus traces matched to within 25 mm and add 22 Ω series termination near the driver. NXP S12DG EMC guidelines recommend a guard ground ring around the MCU when the part sits near a high-current LED or motor driver.
Compliance Information
RoHS / Pb-free LQFP-80 confirmed per NXP MCDS datasheet and IPC-1752 material declaration. Automotive qualified per NXP product page. REACH and conflict-minerals statements available from NXP. AEC-Q100 grade depends on temperature suffix: -40 to +85 °C on CFUE; -40 to +105 °C on CFVE.
