MC9S12DG256BVPV - 16-bit 25MHz HCS12 MCU 256KB Flash | NXP
MPN: MC9S12DG256BVPV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.45 | $22.45 |
| 10 | $20.18 | $201.80 |
| 100 | $17.92 | $1,792.00 |
| 250 | $16.75 | $4,187.50 |
| 500 | $15.6 | $7,800.00 |
MC9S12DG256BVPV Overview
An HCS12 microcontroller is a 16-bit CISC MCU family built around the CPU12 core, a successor to the HC11 with enhanced addressing, indexed operations, and a background debug mode (BDM) interface. The MC9S12D sub-family extends the architecture with modular memory and peripheral options so that designers can scale software across pin-compatible derivatives from 128 KB up to 512 KB Flash. This positioning places the HCS12 between 8-bit automotive MCUs (HC08) and 32-bit Power Architecture/ARM parts, offering CAN connectivity and rich analog in a low-cost, well-understood toolchain.
Key features include 256 KB Flash (organized as 256K x 8), 4 KB EEPROM, 12 KB RAM, two 10-bit ADC modules, an 8-channel enhanced capture timer, eight PWM channels, two SCI, one SPI, one I2C, one CAN 2.0 A/B controller, and a BDM debug port. The device operates from 5 V (with 2.5 V internal regulator) across the -40 C to +85 C industrial temperature range. Programmable interrupt controller and PLL clock generation support flexible system timing.
The architecture uses a 16-bit CPU12 core with a hardware multiply/divide accelerator and a unified memory map, enabling C-compiler-friendly code generation. The internal 2.5 V regulator powers the core while the I/O ring stays at 5 V for noise-tolerant automotive signaling. The CAN module is M_CAN compatible and supports both standard and extended identifiers, easing integration with automotive body and chassis networks.
Typical applications include automotive body controllers, instrument clusters, HVAC panels, seat and mirror modules, industrial CAN nodes, and any 16-bit embedded control design with CAN connectivity. The wide operating voltage and industrial temperature rating also suit building automation and heavy-equipment telematics. When migrating from an HC08 design, the HCS12 preserves peripheral and toolchain compatibility while adding more memory and CAN hardware.
Drop-in alternatives for MC9S12DG256BVPV — 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 MC9S12DG256BVPV (same form factor and footprint) — differing in Package, ADC, Supply Voltage, Operating Temperature, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12DG256CPVE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DG256BCPV
✅ Drop-In✓ In Stock
$22.4 / Unit
View Datasheet →MC9S12DT256BVPV
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12A256CPVE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12DG256MPVE
✅ Drop-In✓ In Stock
$75.08 / Unit
View Datasheet →MC9S12DG256BVPV Maximum Ratings & Electrical Characteristics
| Core Processor | HCS12 (CPU12) |
| Core Size | 16-bit |
| Maximum Clock Speed | 25 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 12 KB |
| EEPROM Size | 4 KB |
| Package | 112-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Operating Supply Voltage | 2.5 V core / 5 V I/O (single 5 V supply with internal regulator) |
| Operating Temperature | -40 C to +85 C |
| Number of I/O | 91 |
| ADC | 2 x 8-channel 10-bit |
| PWM Channels | 8 |
| Communication Interfaces | CAN, I2C, SCI, SPI |
| Connectivity | CAN 2.0 A/B, I2C, SPI, 2x SCI |
| Peripherals | PWM, WDT, POR, LVD, BDM debug |
| Data Converters | A/D 16x10b |
| Oscillator Type | Internal PLL + external crystal |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
MC9S12DG256BVPV Pin Configuration
| Pin 1 | PAD0 — Port AD input/output bit 0 |
| Pin 2 | PAD1 — Port AD input/output bit 1 |
| Pin 3 | PAD2 — Port AD input/output bit 2 |
| Pin 4 | PAD3 — Port AD input/output bit 3 |
| Pin 5 | PAD4 — Port AD input/output bit 4 |
| Pin 6 | PAD5 — Port AD input/output bit 5 |
| Pin 7 | PAD6 — Port AD input/output bit 6 |
| Pin 8 | PAD7 — Port AD input/output bit 7 |
| Pin 9 | VDDR — Voltage reference for Port AD |
| Pin 10 | VSS — Digital ground |
| Pin 11 | VDD — Digital 5 V supply |
| Pin 12 | PAD8 — Port AD input/output bit 8 |
| Pin 13 | PAD9 — Port AD input/output bit 9 |
| Pin 14 | PAD10 — Port AD input/output bit 10 |
| Pin 15 | PAD11 — Port AD input/output bit 11 |
| Pin 16 | PAD12 — Port AD input/output bit 12 |
| Pin 17 | PAD13 — Port AD input/output bit 13 |
| Pin 18 | PAD14 — Port AD input/output bit 14 |
| Pin 19 | PAD15 — Port AD input/output bit 15 |
| Pin 20 | BKGD — Background Debug Mode interface |
| Pin 21 | RESET — Active-low reset input |
| Pin 22 | VDDPLL — PLL supply voltage |
| Pin 23 | VSSPLL — PLL ground |
| Pin 24 | EXTAL — External clock/crystal input |
| Pin 25 | XTAL — Crystal output |
| Pin 26 | MODC — Mode select input |
| Pin 27 | PAD16 — Port AD input/output bit 16 / AN0 |
| Pin 28 | PAD17 — Port AD input/output bit 17 / AN1 |
| Pin 29 | PAD18 — Port AD input/output bit 18 / AN2 |
| Pin 30 | PAD19 — Port AD input/output bit 19 / AN3 |
| Pin 31 | PAD20 — Port AD input/output bit 20 / AN4 |
| Pin 32 | PAD21 — Port AD input/output bit 21 / AN5 |
| Pin 33 | PAD22 — Port AD input/output bit 22 / AN6 |
| Pin 34 | PAD23 — Port AD input/output bit 23 / AN7 |
| Pin 35 | VDDA — ADC supply voltage |
| Pin 36 | VSSA — ADC ground |
| Pin 37 | PWM0 — PWM channel 0 output |
| Pin 38 | PWM1 — PWM channel 1 output |
| Pin 39 | PWM2 — PWM channel 2 output |
| Pin 40 | PWM3 — PWM channel 3 output |
| Pin 41 | PWM4 — PWM channel 4 output |
| Pin 42 | PWM5 — PWM channel 5 output |
| Pin 43 | PWM6 — PWM channel 6 output |
| Pin 44 | PWM7 — PWM channel 7 output |
| Pin 45 | PP0 — Port P I/O bit 0 |
| Pin 46 | PP1 — Port P I/O bit 1 |
| Pin 47 | PP2 — Port P I/O bit 2 |
| Pin 48 | PP3 — Port P I/O bit 3 |
| Pin 49 | PP4 — Port P I/O bit 4 |
| Pin 50 | PP5 — Port P I/O bit 5 |
| Pin 51 | PP6 — Port P I/O bit 6 |
| Pin 52 | PP7 — Port P I/O bit 7 |
| Pin 53 | PT0 — Port T I/O bit 0 |
| Pin 54 | PT1 — Port T I/O bit 1 |
| Pin 55 | PT2 — Port T I/O bit 2 |
| Pin 56 | PT3 — Port T I/O bit 3 |
| Pin 57 | PT4 — Port T I/O bit 4 |
| Pin 58 | PT5 — Port T I/O bit 5 |
| Pin 59 | PT6 — Port T I/O bit 6 |
| Pin 60 | PT7 — Port T I/O bit 7 |
| Pin 61 | PS0 — Port S I/O bit 0 / RXD0 |
| Pin 62 | PS1 — Port S I/O bit 1 / TXD0 |
| Pin 63 | PS2 — Port S I/O bit 2 / RXD1 |
| Pin 64 | PS3 — Port S I/O bit 3 / TXD1 |
| Pin 65 | PS4 — Port S I/O bit 4 / MOSI |
| Pin 66 | PS5 — Port S I/O bit 5 / MISO |
| Pin 67 | PS6 — Port S I/O bit 6 / SPSCK |
| Pin 68 | PS7 — Port S I/O bit 7 / SS |
| Pin 69 | PJ0 — Port J I/O bit 0 / SDA |
| Pin 70 | PJ1 — Port J I/O bit 1 / SCL |
| Pin 71 | PJ2 — Port J I/O bit 2 |
| Pin 72 | PJ3 — Port J I/O bit 3 |
| Pin 73 | PJ4 — Port J I/O bit 4 |
| Pin 74 | PJ5 — Port J I/O bit 5 |
| Pin 75 | PJ6 — Port J I/O bit 6 |
| Pin 76 | PJ7 — Port J I/O bit 7 |
| Pin 77 | PM0 — Port M I/O bit 0 / CAN0TX |
| Pin 78 | PM1 — Port M I/O bit 1 / CAN0RX |
| Pin 79 | PM2 — Port M I/O bit 2 |
| Pin 80 | PM3 — Port M I/O bit 3 |
| Pin 81 | PM4 — Port M I/O bit 4 |
| Pin 82 | PM5 — Port M I/O bit 5 |
| Pin 83 | PM6 — Port M I/O bit 6 |
| Pin 84 | PM7 — Port M I/O bit 7 |
| Pin 85 | PE0 — Port E I/O bit 0 / IRQ |
| Pin 86 | PE1 — Port E I/O bit 1 / XIRQ |
| Pin 87 | PE2 — Port E I/O bit 2 |
| Pin 88 | PE3 — Port E I/O bit 3 |
| Pin 89 | PE4 — Port E I/O bit 4 |
| Pin 90 | PE5 — Port E I/O bit 5 |
| Pin 91 | PE6 — Port E I/O bit 6 |
| Pin 92 | PE7 — Port E I/O bit 7 |
| Pin 93 | VDDX — I/O supply voltage |
| Pin 94 | VSSX — I/O ground |
| Pin 95 | PK0 — Port K I/O bit 0 |
| Pin 96 | PK1 — Port K I/O bit 1 |
| Pin 97 | PK2 — Port K I/O bit 2 |
| Pin 98 | PK3 — Port K I/O bit 3 |
| Pin 99 | PK4 — Port K I/O bit 4 |
| Pin 100 | PK5 — Port K I/O bit 5 |
| Pin 101 | PK6 — Port K I/O bit 6 |
| Pin 102 | PK7 — Port K I/O bit 7 |
| Pin 103 | PH0 — Port H I/O bit 0 |
| Pin 104 | PH1 — Port H I/O bit 1 |
| Pin 105 | PH2 — Port H I/O bit 2 |
| Pin 106 | PH3 — Port H I/O bit 3 |
| Pin 107 | PH4 — Port H I/O bit 4 |
| Pin 108 | PH5 — Port H I/O bit 5 |
| Pin 109 | PH6 — Port H I/O bit 6 |
| Pin 110 | PH7 — Port H I/O bit 7 |
| Pin 111 | VDD — Digital 5 V supply |
| Pin 112 | VSS — Digital ground |
Typical Applications
MC9S12DG256BVPV is suitable for 6 applications: Automotive Body Controller, Instrument Cluster, HVAC Control Module, Industrial CAN Node, Seat and Mirror Module, Building Automation Controller.
Automotive Body Controller
The MC9S12DG256BVPV is a strong fit for automotive body controllers because of its on-chip CAN 2.0 A/B controller (msCAN), 5 V I/O tolerance, and 91 general-purpose I/O lines that drive lamps, motors, and switches without external glue logic. The 256 KB Flash holds bootloader plus body-control firmware with margin for feature growth, while the 12 KB RAM comfortably accommodates CAN message buffers and task stacks. Designers typically place the part between a 12 V-to-5 V regulator and the load-driver stages, using the 8-channel PWM to modulate LED dimming and the 10-bit ADC to read battery voltage and thermistor inputs. Industrial-grade temperature rating (-40 C to +85 C) is sufficient for cabin modules.
Recommended
Instrument Cluster
An automotive instrument cluster benefits from the MC9S12DG256BVPV's 8-channel PWM for gauge pointer control and its dual 10-bit ADC modules for fuel-level and temperature sensing. The 256 KB Flash supports a real-time operating system plus graphics libraries for segment or small dot-matrix LCDs, and the 5 V I/O ring interfaces directly to stepper-motor drivers and warning-LED arrays. The CPU12 core's efficient C-compiled code keeps pointer updates jitter-free at the 25 MHz bus rate, while the msCAN module receives vehicle-speed and engine-RPM data from the powertrain CAN bus.
Recommended
HVAC Control Module
The MC9S12DG256BVPV suits HVAC control modules that demand multiple PWM outputs for blower-speed control and mode doors, plus ADC channels for cabin and ambient temperature. The on-chip SPI can drive a character-LCD or small TFT panel for the climate display, while the I2C bus talks to digital temperature sensors and EEPROM for trim storage. The internal 2.5 V regulator simplifies the power tree to a single 5 V rail, and the BDM interface speeds firmware calibration on the production line. Pin-compatible migration to 512 KB Flash derivatives is possible if HVAC software grows.
Recommended
Industrial CAN Node
Industrial CAN nodes such as sensor aggregators and motor-control satellite modules can use the MC9S12DG256BVPV as a cost-effective 16-bit controller with hardware CAN. The 256 KB Flash accommodates a CANopen or DeviceNet stack alongside the application code, and the two SCI ports support RS-232/RS-485 service interfaces. The 10-bit ADC with 16 channels is enough for multi-sensor acquisition, and the 8-channel PWM can drive solenoids or LED indicators. The -40 C to +85 C range covers most factory-floor and outdoor enclosures.
Recommended
Seat and Mirror Module
Seat and mirror modules need precise multi-channel PWM (for motor position) plus reliable CAN communication with the body controller, and the MC9S12DG256BVPV provides both. The 8-channel enhanced capture timer measures position feedback while the 8-channel PWM drives the drive motors in both directions through external H-bridges. The 256 KB Flash holds calibration tables for different vehicle variants, and the 12 KB RAM is ample for position tracking. BDM debug simplifies factory calibration, and the 5 V I/O ring eliminates level shifters to the motor-driver stages.
Recommended
Building Automation Controller
Building-automation controllers (lighting panels, access-control readers, HVAC zoning) can leverage the MC9S12DG256BVPV's CAN or I2C backbone, 8-channel PWM for dimmer outputs, and 10-bit ADC for analog sensor inputs. The 256 KB Flash supports BACnet or Modbus stacks, and the 4 KB EEPROM stores configuration parameters across power cycles. The wide operating voltage and industrial temperature rating suit equipment rooms and rooftop installations. Pin compatibility with the broader HCS12 family enables designers to reuse firmware across multiple controller SKUs.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12DG256BVPV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12DG256CPVE | MC9S12DG256BCPV | MC9S12DT256BVPV | MC9S12A256CPVE | MC9S12DG256MPVE |
|---|---|---|---|---|---|---|
| Package | 112-LQFP (20x20) | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same | 112-LQFP (20x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Processor | HCS12 (CPU12) | HCS12 (CPU12) | HCS12 (CPU12) | HCS12 (CPU12) | HCS12 (CPU12) | HCS12 (CPU12) |
| Maximum Clock Speed | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz |
| Flash Size | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM Size | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB | 12 KB |
| CAN Controllers | 1 x msCAN | 1 x msCAN | 1 x msCAN | 2 x msCAN | 1 x msCAN | 1 x msCAN |
| Temperature Grade | Industrial (-40C to +85C) | Extended automotive | Industrial | Industrial | Extended automotive | Industrial |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Industrial-grade temperature in the BVPV suffix variant (vs MC9S12DG256CPVE)
- Single msCAN + maximum pin compatibility (vs MC9S12DT256BVPV)
- 256 KB Flash without second CAN (vs MC9S12A256CPVE)
Design Notes
Decouple every VDD/VSS pair close to the IC with a 100 nF ceramic plus a bulk 4.7 uF tantalum or ceramic, and add a 1 uF + 10 nF pair on VDDA/VSSA to keep ADC noise low. Place the bulk capacitor within 25 mm of the supply pins and route a wide, low-impedance ground plane directly under the LQFP-112 footprint. The internal 2.5 V regulator still requires a stable 5 V input; add a Pi-filter (ferrite + cap) when sharing the 5 V rail with inductive loads.
Estimated: with a 4-layer PCB and the recommended footprint, theta_JA for the 112-LQFP-20 is approximately 45 C/W in still air. At 25 MHz with all peripherals active, power dissipation is roughly 250 mW, producing a self-heating rise of only 11 C above ambient - well within the 85 C ceiling. For sealed enclosures without airflow, derate the bus frequency or add a copper heat-spreader footprint under the exposed die paddle area.
Keep the BDM (BKGD) trace under 50 mm and protect it with a series 4.7 k resistor to avoid programming glitches. Place the EXTAL/XTAL crystal within 10 mm of the pins with a grounded guard ring to suppress crosstalk. The CAN bus traces should be a 120 ohm differential pair routed away from PWM edges to meet CAN 2.0 signal-integrity margins, and the analog inputs (AN0-AN7) should be guarded by a ground trace to reject switching noise.
Do not leave MODC floating - tie it to VDD or GND through a 10 k resistor to select the desired mode after reset. The MODC, BKGD, and RESET pins are critical for in-circuit programming and must be brought to test points if production-line firmware updates are planned. Verify the PLL filter components (R-C network on VDDPLL/VSSPLL) match the manufacturer reference design; incorrect values will prevent the bus from locking at 25 MHz.
Compliance Information
RoHS and REACH compliant per DigiKey product listing. The MC9S12DG256BVPV is the industrial-temperature grade; for AEC-Q100 automotive qualification choose the MC9S12DG256CPVE or equivalent Q-suffix variant. Halogen-free status not stated on the distributor page - verify with the manufacturer before halogen-sensitive designs.
