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NXP Semiconductors MC9S12DG256BMPV
- Part No.:
- MC9S12DG256BMPV
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MC9S12DG256BMPV.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,925
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Product details
Overview
MC9S12DG256BMPV from NXP (formerly Freescale/Motorola) is a 16-bit HCS12 microcontroller featuring 256 KB on-chip Flash EEPROM, 12 KB RAM, and integrated CAN 2.0A/B controller, PWM, ATD (10-bit, 16-channel), SPI, SCI, and I²C peripherals. It operates at up to 25 MHz bus speed with PLL-based clock generation and supports automotive-grade temperature range (−40°C to +125°C) in an 80-pin QFP package.
For engineers reviewing the MC9S12DG256BMPV datasheet, MC9S12DG256BMPV pinout, MC9S12DG256BMPV application, or MC9S12DG256BMPV equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in engine control and body electronics, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MC9S12DG256BMPV implements the HCS12 CPU core with 16-bit data path, 24-bit addressing, and background debug mode (BDM) support via BKGD pin. Its clock system integrates a crystal oscillator (EXTAL/XTAL), PLL with programmable multiplication (REFDV/SYNR), and multiple low-power modes including Stop, Wait, and Pseudo-Stop.
Peripheral integration includes dual ATD converters (ATD0 and ATD1) with external trigger inputs (ETRIG0/ETRIG1), eight-channel PWM with center-aligned capability, and MSCAN module compliant with ISO 11898-1, supporting both standard and extended CAN identifiers with message buffering and error handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12 16-bit CPU with 24-bit address bus and BDM interface for in-circuit debugging |
| Flash Memory | 256 KB on-chip Flash EEPROM with 100K write/erase cycles and 10-year data retention |
| RAM Size | 12 KB on-chip SRAM, including 4 KB of general-purpose RAM and 8 KB of dedicated register space |
| ADC Resolution | 10-bit successive approximation ATD with 16 input channels (8 per ATD module) and ≤10 µs conversion time |
| Bus Speed | Up to 25 MHz derived from PLL output; supports external bus expansion with multiplexed address/data bus |
| Operating Temp | −40°C to +125°C ambient, qualified for automotive under AEC-Q100 Grade 1 requirements |
| CAN Interface | One MSCAN module compliant with CAN 2.0A/B protocol, supporting 1 Mbit/s data rate and 15 message buffers |
Pinout & Package
MC9S12DG256BMPV is housed in an 80-pin Quad Flat Package (QFP), case number 841B, with 0.5 mm lead pitch and exposed thermal pad. Pin assignments are defined in Figure 2-2 of the Device User Guide (9S12DP256BDGV2/D V02.14).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EXTAL / XTAL | Oscillator Input / Output | Connects to external crystal (1–8 MHz); forms Pierce oscillator with internal inverter and feedback resistor |
| BKGD | Background Debug Pin | Single-wire BDM interface for programming, breakpoint setting, and real-time register inspection |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers, disables peripherals, and forces boot vector fetch |
| VREGEN | Voltage Regulator Enable | High-active signal enabling internal 5 V regulator; required for operation when external VDD not supplied to VDDR |
| PM[7:0] | CAN Transceiver I/O Pins | PM7/PM6 = TXCAN3/RXCAN3; PM5–PM0 = multi-function pins supporting CAN0–CAN4 channels and SPI0 |
| PP[7:0] | PWM Output Pins | Eight dedicated PWM outputs (PWM0–PWM7) with configurable duty cycle, period, and polarity |
| PS[7:0] | SCI/SPI Serial Interface | PS3/PS2 = TXD1/RXD1; PS1/PS0 = TXD0/RXD0; PS6–PS4 = SCK0/MOSI0/MISO0 for SPI0 master/slave |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash Security | Secure memory protection via flash security byte; prevents unauthorized read/write access to program memory |
| Dual ATD Converters | Two independent 10-bit ADC modules (ATD0 and ATD1), each with 8 analog inputs and external trigger capability |
| Enhanced Capture Timer | 16-bit ECT module with 8 input capture/compare channels, quadrature decoder, and pulse accumulation mode |
| MSCAN Module | Full CAN 2.0A/B controller with 15 message buffers, automatic retransmission, and error confinement |
| Low-Power Modes | Four operational modes: Run, Wait, Stop, and Pseudo-Stop - reducing current draw to ≤400 µA in STOP with RTI/COP disabled |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time monitoring of throttle position, coolant temperature, and oxygen sensor signals in gasoline engine management systems. IC Role / Device Role / Timing Role: Central processing unit executing fuel injection timing, spark advance calculation, and closed-loop air-fuel ratio control at ≤10 ms loop intervals. Use Value: Integrated ATD with external trigger support enables synchronized sampling across multiple sensors; MSCAN ensures robust communication with transmission and ABS modules. |
Use Scenario: Managing door lock actuators, interior lighting dimming, and window lift motor control in passenger vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves and CAN backbone, using PWM outputs for LED brightness control and GPIO for relay drivers. Use Value: Eight PWM channels allow independent dimming of multiple lighting zones; 80-pin QFP provides sufficient I/O for direct connection to discrete power FETs without external logic. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Gear selection logic, solenoid driver timing, and torque converter clutch control in automatic transmissions. IC Role / Device Role / Timing Role: Real-time controller executing deterministic shift scheduling with <50 µs interrupt latency and precise PWM timing for pressure control valves. Use Value: ECT timer with input capture supports high-resolution shaft position sensing; Flash endurance supports field updates over vehicle lifetime. |
Use Scenario: Aggregating raw analog signals from radar front-end ICs and camera power management in pre-crash detection systems. IC Role / Device Role / Timing Role: Signal conditioning and preprocessing node converting analog IF outputs to digital format before forwarding via CAN to main ADAS ECU. Use Value: Dual ATD modules enable simultaneous sampling of multiple radar channels; CAN interface meets ISO 11898-1 timing requirements for safety-critical messaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MAG | 512 KB Flash, 32 KB RAM, XGATE co-processor, 112-pin LQFP; higher memory and compute throughput | Required for complex real-time tasks like adaptive cruise control where XGATE offloads interrupt handling | Select when >256 KB Flash or hardware-accelerated signal processing is needed; not pin-compatible |
| S912XEQ512J2MAG | Same core, enhanced voltage regulator, improved ESD rating (±8 kV HBM), and updated maskset (2K79X) | Preferred for new designs targeting AEC-Q100 Rev G compliance and long-term supply stability | Drop-in replacement for MC9S12DG256BMPV in 80-pin QFP footprint with identical pinout and peripheral mapping |
Compared with MC9S12DG256BMPV, MC9S12XDP512MAG offers scalable memory but requires PCB redesign, while S912XEQ512J2MAG provides direct compatibility with enhanced reliability - making it the preferred upgrade path for legacy platform refreshes.
Availability
MC9S12DG256BMPV is available at Aetrix Electronics and suitable for automotive engine control, body electronics, and industrial motion control applications requiring stable component supply, long lifecycle support, and AEC-Q100-compliant performance.
Supply support for MC9S12DG256BMPV includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors acquired Freescale Semiconductor in 2015 and maintains full support for the HCS12 family, including documentation, tools, and long-term manufacturing commitments.
The MC9S12DG256BMPV belongs to the HCS12 automotive microcontroller product line, designed specifically for cost-sensitive, high-reliability engine and chassis control applications requiring CAN connectivity and analog signal acquisition.
FAQ
What is the maximum bus frequency supported by the MC9S12DG256BMPV?
The MC9S12DG256BMPV supports a maximum bus frequency of 25 MHz, achieved through its on-chip PLL configured with appropriate REFDV and SYNR register values. This frequency is sustained across the full operating temperature range (−40°C to +125°C) and supply voltage (4.5 V to 5.25 V), enabling deterministic real-time execution in automotive control loops.
Does the MC9S12DG256BMPV include hardware security features?
Yes, the MC9S12DG256BMPV includes flash security enabled via a dedicated security byte in the Flash configuration field. When set, it prevents external readout of program memory and disables background debug access - protecting firmware intellectual property and preventing unauthorized reprogramming in deployed ECUs.
Can the MC9S12DG256BMPV operate without an external crystal?
No - the MC9S12DG256BMPV requires an external crystal (1–8 MHz) connected between EXTAL and XTAL pins to initialize its oscillator circuit. The device lacks an internal RC oscillator; PLL operation depends on stable crystal-derived reference clock, and no internal clock source can substitute for XTAL/EXTAL during startup or normal operation.
How many CAN controllers does the MC9S12DG256BMPV integrate?
The MC9S12DG256BMPV integrates one MSCAN controller compliant with CAN 2.0A/B protocol. It supports standard (11-bit) and extended (29-bit) identifiers, 1 Mbit/s data rate, and 15 message buffers with prioritized transmission and automatic retransmission on error - sufficient for most automotive body and powertrain networks.
What is the purpose of the VREGEN pin on the MC9S12DG256BMPV?
The VREGEN pin on the MC9S12DG256BMPV enables the internal 5 V voltage regulator that powers the core logic and I/O drivers. When pulled high, it activates the regulator using VDDA as input; when low or floating, the device requires externally regulated 5 V applied to VDDR. This pin allows flexible power architecture design in systems with mixed supply domains.
MC9S12DG256BMPV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- PWM, WDT
- Number of I/O:
- 91
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.25V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12DG256BMPV FAQ
1.How can I place an order for MC9S12DG256BMPV through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12DG256BMPV on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S12DG256BMPV reliable?
The price and inventory of MC9S12DG256BMPV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12DG256BMPV is usually 5 days.
3.What payment methods are accepted for MC9S12DG256BMPV?
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MC9S12DG256BMPV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12DG256BMPV order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S12DG256BMPV?
For technical support, including MC9S12DG256BMPV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12DG256BMPV requirements.
6.How does Aetrix verify that MC9S12DG256BMPV is sourced from the original manufacturer or authorized distributors?
All MC9S12DG256BMPV products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S12DG256BMPV meets industry standards.
7.What is the process for return or replacement of MC9S12DG256BMPV?
All MC9S12DG256BMPV units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12DG256BMPV, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S12DG256BMPV part is unused and in its original packaging.
Return procedure for MC9S12DG256BMPV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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