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NXP Semiconductors MC912DG128ACPVER
- Part No.:
- MC912DG128ACPVER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MC912DG128ACPVER.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:313
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Product details
Overview
MC912DG128ACPVER from Freescale Semiconductor is a 16-bit HCS12 microcontroller featuring 128 KB on-chip Flash EEPROM, 4 KB RAM, and integrated CAN 2.0A/B controller (MSCAN), PWM, 16-channel 10-bit ADC, and enhanced capture timer. It operates at up to 25 MHz core frequency with PLL clock multiplication and supports automotive-grade temperature range (–40°C to +125°C) in 112-pin QFP package.
For engineers reviewing the MC912DG128ACPVER datasheet, MC912DG128ACPVER pinout, MC912DG128ACPVER application, or MC912DG128ACPVER equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-chain-ready availability details - all grounded in Freescale's Rev. 4.0 technical data for the MC68HC912DG128A family.
Technical Context
The MC912DG128ACPVER implements the HCS12 CPU core with 16-bit data path, 24-bit address space, and background debug mode (BDM) support. Its memory subsystem includes 128 KB Flash (with block protection), 4 KB RAM, and 512 B EEPROM, all accessible via unified memory mapping with paging support.
Peripheral integration centers on real-time control: MSCAN handles ISO 11898-compliant CAN communication with 16 message buffers; dual 10-bit ATD converters provide simultaneous sampling; 8-channel PWM supports center- and left-aligned modes; and the enhanced capture timer (ECT) offers input capture, output compare, pulse accumulation, and quadrature decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12 16-bit CPU with 24-bit addressing and BDM interface for in-circuit debugging. |
| Flash Memory | 128 KB on-chip Flash EEPROM with programmable block protection and erase/program cycles ≥10k. |
| RAM | 4 KB on-chip RAM with wait-state configurable access timing. |
| Clock System | Internal PLL with selectable multiplication (1×–32×); supports crystal (1–8 MHz) or external clock input. |
| MSCAN Controller | Full CAN 2.0A/B compliant controller with 16 message buffers, identifier filtering, and bus-off recovery. |
| ADC | Dual 10-bit analog-to-digital converters, each with 8/12/16-channel multiplexed inputs and software/hardware trigger support. |
| Operating Temperature | –40°C to +125°C, qualified for automotive underhood applications per AEC-Q100 stress test requirements. |
Pinout & Package
MC912DG128ACPVER is housed in a 112-pin LQFP (Low-Profile Quad Flat Package), case number 987, with 0.4 mm lead pitch and 20 mm × 20 mm body size. Pin assignments follow the MC68HC912DG128A-specific layout (Figure 3-2, Rev. 4.0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power pins with separate AGND/DGND routing required for noise-sensitive ADC/PWM operation. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced signal or watchdog timeout assertion. |
| MODA, MODB | Mode selection inputs | Configure boot mode (normal, special bootstrap, or BDM) at power-on; must be held stable during POR. |
| CANH, CANL | CAN differential bus interface | Direct connection to ISO 11898-compliant physical layer transceiver; requires external termination and common-mode choke. |
| AD0–AD7 | Analog input channels | Eight dedicated analog inputs shared with Port AD; support single-ended or differential measurement with programmable gain. |
| PWM0–PWM7 | PWM output channels | Eight independent PWM outputs supporting dead-time insertion, fault shutdown, and synchronous update. |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Mode (BDM) | Single-wire debug interface enabling full read/write memory access, register inspection, and breakpoint execution without halting real-time peripherals. |
| MSCAN Controller | Hardware-accelerated CAN protocol handling with automatic retransmission, error confinement, and 16 configurable message buffers. |
| Enhanced Capture Timer (ECT) | 16-bit timer with 8 input capture/compare channels, 2 pulse accumulators, and quadrature decoder for motor position sensing. |
| Flash EEPROM Security | Programmable flash protection bits (FPOPEN) prevent unauthorized read-out or modification of firmware during field deployment. |
| Low-Power Modes | STOP, WAIT, and pseudo-STOP modes reduce current draw to <10 µA (STOP) while retaining RAM and register state. |
Applications
| Engine Control Unit (ECU) | Anti-lock Braking System (ABS) |
|---|---|
|
Use Scenario: Real-time closed-loop fuel injection and ignition timing control in gasoline engines. IC Role / Device Role / Timing Role: Primary engine management MCU executing sensor fusion, PID control, and CAN-based diagnostics. Use Value: Integrated MSCAN enables direct communication with dashboard and transmission ECUs; 10-bit ADC resolves crank/cam position with ≤1° accuracy. |
Use Scenario: Wheel speed monitoring and hydraulic pressure modulation during emergency braking events. IC Role / Device Role / Timing Role: Safety-critical controller managing four-wheel speed sampling, slip calculation, and solenoid actuation timing. Use Value: ECT's quadrature decoding supports high-resolution wheel encoder inputs; STOP mode ensures fast wake-on-signal for latency-critical response. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
|
Use Scenario: Centralized control of lighting, door locks, window lifts, and climate fan speed across vehicle domains. IC Role / Device Role / Timing Role: Domain coordinator interfacing with LIN slaves and relaying commands over CAN backbone. Use Value: Dual ATD converters monitor battery voltage and cabin temperature simultaneously; PWM channels drive LED dimming and motorized actuators. |
Use Scenario: Torque assist computation and brushless DC motor commutation in steer-by-wire systems. IC Role / Device Role / Timing Role: Real-time torque controller synchronizing motor phase currents with steering angle and vehicle speed inputs. Use Value: 8-channel PWM with dead-time control prevents shoot-through in 3-phase inverter bridges; MSCAN reports fault status to central gateway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC912DG128ACPER | Same die, but packaged in 112-pin PQFP (plastic quad flat pack) instead of LQFP; identical electrical specs and pinout. | No functional difference; mechanical footprint differs in lead profile and thermal pad presence. | Select MC912DG128ACPER only when legacy board layout uses PQFP land pattern or requires alternate moisture sensitivity level (MSL). |
| S912XDP512J1MALR | Successor S12X derivative with 512 KB Flash, 32 KB RAM, XGATE co-processor, and enhanced CAN FD support. | Enables higher code complexity, faster CAN throughput, and deterministic interrupt latency - but requires PCB redesign. | Choose S912XDP512J1MALR for new designs requiring extended memory, CAN FD, or real-time offload; not drop-in compatible. |
Compared with MC912DG128ACPER, the MC912DG128ACPVER offers identical functionality in a thermally enhanced LQFP package with improved solder joint reliability; versus S912XDP512J1MALR, it provides proven automotive qualification at lower cost and simpler toolchain support, albeit with less memory and no CAN FD.
Availability
MC912DG128ACPVER is available at Aetrix Electronics and suitable for engine control units, anti-lock braking systems, body control modules, and electric power steering applications requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.
Supply support for MC912DG128ACPVER 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
Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in automotive, industrial, and networking semiconductors, known for robust MCU platforms and ASIL-capable safety solutions.
The MC912DG128ACPVER belongs to the HCS12 family, designed specifically for cost-sensitive, high-reliability automotive applications including powertrain, chassis, and body electronics where CAN connectivity and real-time determinism are essential.
FAQ
What is the maximum operating frequency of the MC912DG128ACPVER?
The MC912DG128ACPVER achieves a maximum core frequency of 25 MHz using its on-chip PLL, which multiplies an external crystal or clock source (1–8 MHz). The system clock drives peripheral modules at derived rates - for example, MSCAN operates at up to 1 Mbps with proper prescaler configuration, and the ADC conversion time remains consistent across valid VDD and temperature ranges per Section 21.3 of the Rev. 4.0 datasheet.
Does the MC912DG128ACPVER support CAN FD?
No, the MC912DG128ACPVER integrates the legacy MSCAN controller compliant with CAN 2.0A/B only (ISO 11898-1:1993), supporting bit rates up to 1 Mbps and standard/extended identifiers. It does not implement CAN FD features such as flexible data-rate switching, larger payloads (up to 64 bytes), or CRC enhancements. For CAN FD, designers must migrate to S12X or S32K families.
How is flash memory protected against unauthorized access on the MC912DG128ACPVER?
Flash protection is enforced via the FPOPEN bit in the Flash Protection Register (FPROT). When set, it disables read-out of Flash contents via BDM or internal code reads, and prevents programming/erasing of protected blocks. This feature is irreversible once enabled - critical for IP protection in production firmware. Configuration occurs during programming using Freescale's PROG12Z or similar certified tools.
What debug interface does the MC912DG128ACPVER use?
The MC912DG128ACPVER uses Freescale's Background Debug Mode (BDM), a single-wire serial interface that allows full memory and register access, breakpoint setting, and real-time execution control without halting time-critical peripherals. BDM requires only the BKGD pin and ground connection, and is supported by CodeWarrior Development Studio v5.1+ and third-party emulators like P&E Micro's USB-ML-12.
Is the MC912DG128ACPVER pin-compatible with the MC68HC912DT128A?
No - although both belong to the same HCS12 family and share architectural similarities, the MC912DG128ACPVER and MC68HC912DT128A differ in peripheral sets and pin assignments. The DG variant includes MSCAN and enhanced ECT, while the DT variant features dual SPI interfaces and lacks CAN. Their 112-pin QFP footprints are mechanically identical but electrically incompatible due to differing signal mappings (e.g., CANH/CANL vs. SPI0/SPI1 pins).
MC912DG128ACPVER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HC12
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- CPU12
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 69
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 16x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC912DG128ACPVER FAQ
1.How can I place an order for MC912DG128ACPVER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC912DG128ACPVER 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 MC912DG128ACPVER reliable?
The price and inventory of MC912DG128ACPVER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC912DG128ACPVER is usually 5 days.
3.What payment methods are accepted for MC912DG128ACPVER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC912DG128ACPVER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC912DG128ACPVER?
MC912DG128ACPVER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC912DG128ACPVER 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 MC912DG128ACPVER?
For technical support, including MC912DG128ACPVER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC912DG128ACPVER requirements.
6.How does Aetrix verify that MC912DG128ACPVER is sourced from the original manufacturer or authorized distributors?
All MC912DG128ACPVER 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 MC912DG128ACPVER meets industry standards.
7.What is the process for return or replacement of MC912DG128ACPVER?
All MC912DG128ACPVER units undergo pre-shipment inspection (PSI). If there is an issue with MC912DG128ACPVER, 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 MC912DG128ACPVER part is unused and in its original packaging.
Return procedure for MC912DG128ACPVER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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