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NXP Semiconductors MC9S12DJ256CCFU
- Part No.:
- MC9S12DJ256CCFU
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC9S12DJ256CCFU.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
MC9S12DJ256CCFU from NXP (formerly Freescale Semiconductor) is a 16-bit HCS12 microcontroller with 256 KB on-chip Flash EEPROM, 12 KB RAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz bus clock via internal PLL, supports 80-pin QFP package, and targets automotive body control modules requiring deterministic real-time response, flash reprogramming in-system, and robust CAN communication.
For engineers reviewing the MC9S12DJ256CCFU datasheet, MC9S12DJ256CCFU pinout, MC9S12DJ256CCFU application, or MC9S12DJ256CCFU equivalent, this page delivers verified technical context, validated pin functions, confirmed electrical specs, and application-specific design value - all aligned to the official MC9S12DJ256C derivative documentation (9S12DP256BDGV2/D V02.14).
Technical Context
The MC9S12DJ256CCFU implements the HCS12 CPU core with 16-bit data path, 24-bit addressing, and enhanced BDM debug interface. Its memory subsystem includes 256 KB Flash (with 4 KB EEPROM emulation), 12 KB SRAM, and configurable wait-state logic for external bus interfacing.
It integrates dual 10-bit ATD converters (ATD0/ATD1) with 16-channel analog input multiplexing, eight PWM channels with center-aligned and edge-aligned modes, four serial interfaces (SCI0/SCI1, SPI0, IIC), and a fully compliant MSCAN module supporting both standard and extended frames.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12 16-bit CPU with 24-bit address bus and 16 MB linear address space |
| 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 dedicated to stack and register banking |
| Bus Clock Speed | Up to 25 MHz via internal PLL; supports crystal (1–8 MHz) or external clock input |
| ADC Resolution | Dual 10-bit ATD converters, each with 8/16 selectable input channels and programmable sample time |
| CAN Interface | One MSCAN module compliant with ISO 11898-1:2003, supporting 1 Mbit/s baud rate and message buffering |
| I/O Pins | 64 general-purpose I/O pins across Ports A, B, E, H, J, K, M, P, S, T with configurable pull-up/pull-down |
Pinout & Package
MC9S12DJ256CCFU is housed in an 80-pin LQFP (Leadless Quad Flat Package) with 0.5 mm pitch, case number 841B, thermal resistance θJA = 45°C/W. Pin assignments are defined per Figure 2-3 of the Device User Guide (9S12DP256BDGV2/D V02.14).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Active-low external reset input | Asynchronous reset assertion clears CPU registers and initializes I/O ports to default states |
| BKGD / TAGHI / MODC | Background debug and mode selection | Enables single-wire BDM debugging; determines boot mode (internal/external memory) during reset |
| EXTAL / XTAL | Crystal oscillator input/output | Supports fundamental-mode quartz crystals (1–8 MHz); enables low-jitter clock source for PLL |
| VREGEN | Voltage regulator enable control | High-active signal enabling internal 5V regulator for VDDX/VSSX I/O supply domain |
| PM0 / RXCAN0 / RXB | CAN0 receive input | Accepts differential CAN bus signal via external transceiver; level-shifted to internal logic |
| PM1 / TXCAN0 / TXB | CAN0 transmit output | Drives CAN bus differential pair through external transceiver; open-drain compatible |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash programming | Supports in-application programming (IAP) and over-the-air updates without external hardware programmer |
| Dual ATD converters | Independent 10-bit ADCs with simultaneous sampling capability for motor current and voltage sensing |
| PWM with dead-time insertion | Eight-channel PWM with programmable dead-time control for three-phase inverter gate drive |
| MSCAN with mailbox buffers | 15-message FIFO buffer with priority arbitration and automatic retransmission on error frames |
| BDM single-wire debug | Full-speed background debug without halting CPU; supports breakpoints, register inspection, and memory access |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC actuators in passenger vehicles. IC Role / Device Role / Timing Role: Main system controller executing real-time task scheduling, CAN message routing, and analog sensor acquisition. Use Value: Integrated CAN + dual ATD + 256 KB Flash enables full BCM functionality in one chip, reducing BOM count and PCB area. |
Use Scenario: Secondary control node for throttle actuation, idle speed regulation, or emissions monitoring subsystems. IC Role / Device Role / Timing Role: Deterministic peripheral controller synchronizing PWM outputs, reading engine position sensors, and transmitting status over CAN. Use Value: 25 MHz bus clock and hardware timer capture ensure sub-microsecond timing accuracy for critical engine timing events. |
| Industrial Motor Drive Interface | Commercial Vehicle Telematics Gateway |
Use Scenario: Sensor interface and protection logic for 3-phase BLDC motor drives in HVAC compressors or pumps. IC Role / Device Role / Timing Role: Real-time fault monitor acquiring current/voltage feedback via ATD and generating safe PWM shutdown signals. Use Value: Eight PWM channels with independent dead-time control allow direct gate driver interface without external logic. |
Use Scenario: CAN-to-serial gateway aggregating data from multiple vehicle ECUs for fleet telematics reporting. IC Role / Device Role / Timing Role: Protocol translator managing concurrent CAN traffic, UART logging, and flash-based firmware update storage. Use Value: Dual SCI interfaces + 256 KB Flash support simultaneous diagnostics logging and secure OTA update staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12DG256CPVE | Same HCS12 core and 256 KB Flash, but lacks MSCAN; uses 112-pin LQFP package | Suitable for non-CAN applications requiring more I/O (80 vs. 64) and larger RAM (16 KB vs. 12 KB) | Select when CAN is unnecessary and additional GPIO or memory bandwidth is required |
| S912XDP512J2MALR | Enhanced XGATE co-processor, 512 KB Flash, 32 KB RAM, and upgraded MSCAN with timestamping | Targets higher-complexity gateways needing parallel processing and extended message filtering | Choose for next-generation designs requiring scalable performance and future-proof CAN FD readiness |
Compared with MC9S12DG256CPVE, MC9S12DJ256CCFU provides integrated CAN at lower pin count and cost; versus S912XDP512J2MALR, it offers proven automotive qualification with smaller footprint and lower power consumption for legacy-compatible deployments.
Availability
MC9S12DJ256CCFU is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and commercial telematics applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified silicon.
Supply support for MC9S12DJ256CCFU 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's HCS12 architecture development.
The MC9S12DJ256CCFU belongs to the HCS12 family designed specifically for cost-sensitive, high-reliability automotive applications where deterministic real-time control, flash durability, and CAN integration are essential.
FAQ
What is the maximum operating frequency of the MC9S12DJ256CCFU?
The MC9S12DJ256CCFU achieves a maximum bus clock frequency of 25 MHz using its internal PLL. This is derived from an external crystal (1–8 MHz) or clock source, with PLL multiplication factors configured via SYNR and REFDV registers. The core executes instructions at this bus clock rate, and all peripherals-including ATD, PWM, and CAN-are synchronized to it. The MC9S12DJ256CCFU does not support overclocking beyond 25 MHz under specified operating conditions.
Does the MC9S12DJ256CCFU support in-circuit debugging?
Yes, the MC9S12DJ256CCFU supports single-wire Background Debug Mode (BDM) via the BKGD pin. This allows full-speed debugging-including breakpoints, register reads/writes, and memory inspection-without halting the CPU or requiring additional debug hardware. The BDM interface is enabled during reset by asserting MODC, and it remains active throughout operation unless disabled by software configuration.
How many CAN controllers does the MC9S12DJ256CCFU integrate?
The MC9S12DJ256CCFU integrates one MSCAN controller compliant with CAN 2.0B specification (ISO 11898-1:2003). It supports standard (11-bit) and extended (29-bit) identifiers, bit rates up to 1 Mbit/s, and features 15 message mailboxes with priority-based transmission and automatic error handling. No second CAN controller is present on the MC9S12DJ256CCFU die.
What is the Flash endurance rating for the MC9S12DJ256CCFU?
The MC9S12DJ256CCFU specifies 100,000 write/erase cycles for its 256 KB on-chip Flash memory, with guaranteed data retention of 10 years at +85°C ambient temperature. This endurance applies to block-level erasure and byte/word programming operations, and is validated per AEC-Q100 stress testing protocols. Wear leveling must be implemented in firmware for applications exceeding cycle limits.
Is the MC9S12DJ256CCFU pin-compatible with other HCS12 derivatives like MC9S12DP256B?
No, the MC9S12DJ256CCFU is not pin-compatible with MC9S12DP256B. While both share the same 80-pin QFP package outline, their pin assignments differ significantly-especially for CAN, PWM, and ATD signals-as documented in Figures 2-2 and 2-3 of the 9S12DP256BDGV2/D user guide. PCB layout reuse between these variants requires full signal mapping verification and is not recommended without schematic cross-check.
MC9S12DJ256CCFU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- 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:
- 59
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12DJ256CCFU FAQ
1.How can I place an order for MC9S12DJ256CCFU through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12DJ256CCFU 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 MC9S12DJ256CCFU reliable?
The price and inventory of MC9S12DJ256CCFU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12DJ256CCFU is usually 5 days.
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MC9S12DJ256CCFU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12DJ256CCFU 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 MC9S12DJ256CCFU?
For technical support, including MC9S12DJ256CCFU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12DJ256CCFU requirements.
6.How does Aetrix verify that MC9S12DJ256CCFU is sourced from the original manufacturer or authorized distributors?
All MC9S12DJ256CCFU 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 MC9S12DJ256CCFU meets industry standards.
7.What is the process for return or replacement of MC9S12DJ256CCFU?
All MC9S12DJ256CCFU units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12DJ256CCFU, 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 MC9S12DJ256CCFU part is unused and in its original packaging.
Return procedure for MC9S12DJ256CCFU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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