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NXP Semiconductors MC9S12B64CFUE
- Part No.:
- MC9S12B64CFUE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MC9S12B64CFUE.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MC9S12B64CFUE from Freescale Semiconductor is a 16-bit automotive-grade Flash microcontroller featuring CPU12 core, 64KB Flash EEPROM, 2KB RAM, 1KB EEPROM, 8-channel 10-bit ADC, 8-channel PWM, dual SCI, SPI, I²C, and one CAN 2.0A/B software-compatible module - deployed in body control modules and powertrain sensor interfaces.
For engineers reviewing the MC9S12B64CFUE datasheet, MC9S12B64CFUE pinout, MC9S12B64CFUE application, or MC9S12B64CFUE equivalent, key selection criteria include CAN protocol compliance, 112-pin LQFP package compatibility, 5V-tolerant I/O with Wake-Up capability, and BDM debug support for automotive ECU development.
Technical Context
The MC9S12B64CFUE implements the CPU12 core with M68HC11 instruction set compatibility, 20-bit ALU, and instruction queue; its Lite Integration Module (LIM) manages clock generation (including PLL-based bus speed scaling), interrupt control, and memory mapping across single-chip and expanded bus modes.
It integrates MSCAN12 with five receive and three transmit buffers, programmable identifier filters (2×32-bit/4×16-bit/8×8-bit), and dedicated Rx/Tx/error/wake-up interrupt channels - enabling deterministic real-time CAN messaging in automotive networks without external protocol controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU12 - upward-compatible with M68HC11, supports interrupt stacking and enhanced indexed addressing for legacy code reuse. |
| Flash Memory | 64KB Flash EEPROM - stores firmware with in-system programmability and protected boot sector for secure bootloader operation. |
| RAM | 2KB RAM - provides runtime data storage mapped to $0800–$0FFF, supporting multitask context switching in automotive control loops. |
| ADC | 8-channel 10-bit ADC - supports analog sensor inputs (e.g., temperature, pressure) with external trigger capability for synchronized sampling. |
| CAN Interface | One MSCAN12 module - compliant with ISO 11898-1 CAN 2.0A/B, operates up to 1 Mbps with low-pass filter wake-up function. |
| PWM Outputs | 8-channel PWM - configurable as 8-bit 8-channel or 16-bit 4-channel, with center/left-aligned outputs and independent duty-cycle control per channel. |
| Package | 112-pin LQFP (case no. 987) - provides 91 usable I/O lines including 22 Wake-Up capable pins (Port H/J/P), 5V-tolerant digital I/O, and dual-supply operation (5V I/O, 2.5V core). |
| Debug Interface | Single-wire Background Debug Mode (BDM) - enables non-intrusive real-time debugging, flash programming, and hardware breakpoint support without halting CPU execution. |
Pinout & Package
MC9S12B64CFUE is housed in a 112-pin LQFP package (case no. 987), measuring 22.0 mm × 22.0 mm with 0.65 mm lead pitch. The package supports dual supply (5V I/O/A/D, 2.5V logic), 5V-tolerant inputs, and thermal performance suitable for under-hood automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2, VDDX, VDDA, VDDPLL | Power Supply Inputs | Dedicated rails for core logic (2.5V), I/O (5V), analog (5V), and PLL (2.5V) - enable noise isolation and stable operation across mixed-signal domains. |
| VSS1, VSS2, VSSX, VSSA, VSSPLL, VSSR | Ground Returns | Separate ground planes for digital core, I/O, analog, PLL, and regulator - minimize coupling noise in high-EMI automotive systems. |
| PA0–PA7, PB0–PB7, PH0–PH7, PJ0–PJ1, PK0–PK7, PM0–PM7, PP0–PP7, PT0–PT7, SDA, SCL, RXD0/TXD0, RXD1/TXD1 | Multi-function I/O Ports | Configurable as general-purpose digital I/O, peripheral signals (CAN, SCI, SPI, I²C, PWM, ADC), or Wake-Up sources - 22 pins support STOP/WAIT mode wake-up via edge detection. |
| RESET, IRQ, XIRQ, BKGD, TEST | Control & Debug Signals | Asynchronous reset with internal pull-up; maskable/non-maskable interrupts; single-wire BDM interface for on-chip debug and flash programming. |
| EXTAL, XTAL, XFC, VREGEN | Clock System Terminals | Supports 0.5–16 MHz crystal oscillator; PLL multiplies reference to achieve 50 MHz core equivalent (25 MHz bus speed); limp-home mode ensures operation during external clock failure. |
Key Features
| Feature | Design Value |
|---|---|
| MSCAN12 CAN Module | Full CAN 2.0A/B software compatibility with five Rx and three Tx buffers, flexible filter configuration, and dedicated wake-up interrupt - eliminates need for external CAN controller in ECU designs. |
| Lite Integration Module (LIM) | Centralized management of clock generation (PLL + limp-home), interrupt routing, memory mapping, and bus interfacing - reduces external glue logic and simplifies system architecture. |
| 16-bit Multiplexed External Bus | Supports both 16-bit wide and 8-bit narrow modes - enables cost-optimized expansion using single 8-bit memory devices while retaining full 16-bit internal data path performance. |
| Wake-Up Capability | 22 dedicated interrupt-capable I/O pins (Port H: 8, Port P: 8, Port J: 4, plus IRQ/XIRQ) - allows rapid exit from STOP/WAIT modes for event-driven power management in battery-sensitive applications. |
| On-Chip Voltage Regulation | Internal 5V-to-2.5V regulator powers core logic - removes need for external DC-DC converter and improves board-level integration in space-constrained automotive modules. |
| Background Debug Mode (BDM) | Single-wire interface with hardware breakpoints and flash programming - enables production-line programming and field firmware updates without requiring JTAG header or additional debug hardware. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing real-time control algorithms, coordinating CAN messages with gateway and instrument cluster, and sampling analog sensor inputs. Use Value: Integrated 8-channel PWM drives LED lighting dimming; 8-channel ADC reads cabin temperature/humidity sensors; CAN interface ensures interoperability with OEM network standards. | Use Scenario: Signal conditioning and communication for engine-mounted sensors (MAP, TPS, coolant temp) in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Analog front-end processor and CAN message aggregator - digitizes sensor outputs and transmits calibrated values over CAN bus to main ECU. Use Value: 10-bit ADC resolution meets ASAM MCD-2 MC requirements; MSCAN12 guarantees deterministic latency (<100 µs) for critical engine timing events. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Subsystem |
Use Scenario: Closed-loop control of automatic transmission solenoids, clutch engagement, and gear shifting logic. IC Role / Device Role / Timing Role: Real-time actuator controller with precise PWM timing for solenoid current regulation and fault monitoring via ADC feedback. Use Value: Independent PWM channel control enables simultaneous modulation of multiple solenoids; 22 Wake-Up pins allow immediate response to gear selector input transitions. | Use Scenario: Pre-processing unit for radar or camera sensor fusion in lane departure warning or blind-spot detection systems. IC Role / Device Role / Timing Role: Edge-triggered interrupt handler and CAN message pre-filter - offloads time-critical tasks from main ADAS SoC to reduce latency. Use Value: BDM debug interface supports OTA firmware validation; CAN wake-up capability enables ultra-low-power standby until radar detects vehicle proximity. |
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 |
|---|---|---|---|
| MC9S12B128CFUE | 128KB Flash, 4KB RAM, 1KB EEPROM - double Flash capacity and +2KB RAM vs. MC9S12B64CFUE. | Suitable for larger firmware images with integrated diagnostics or bootloader; same pinout and peripheral set. | Select when firmware size exceeds 64KB or additional RAM is required for complex state machines or buffer-intensive CAN logging. |
| S912XDP512J0 | Enhanced 128KB Flash, 12KB RAM, 4KB EEPROM, 16-channel ADC, and improved CAN FD readiness - not pin-compatible. | Targets next-generation ECU platforms requiring higher memory density and future-proofing for CAN FD migration. | Choose for new designs needing scalability beyond legacy CAN 2.0; requires PCB redesign due to different package (144-pin LQFP) and pin assignment. |
Compared with MC9S12B64CFUE, MC9S12B128CFUE offers direct upgrade path with identical footprint and peripherals, while S912XDP512J0 delivers architectural evolution at the cost of layout change - making the former ideal for incremental feature enhancement and the latter better suited for greenfield development.
Availability
MC9S12B64CFUE is available at Aetrix Electronics and suitable for automotive body electronics, powertrain sensor interfaces, and transmission control modules requiring stable component supply and long-term industrial lifecycle support.
Supply support for MC9S12B64CFUE 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 fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and consumer markets.
The MC9S12B-Family was designed specifically for cost-sensitive, high-reliability automotive multiplexing applications - delivering scalable memory/peripheral configurations while maintaining full pin compatibility across variants.
FAQ
What is the maximum bus speed supported by the MC9S12B64CFUE?
The MC9S12B64CFUE achieves an effective 50 MHz core speed with a 25 MHz bus speed in both single-chip and expanded bus modes. This is enabled by its integrated PLL circuit, which multiplies the external crystal reference frequency - allowing dynamic adjustment of power consumption versus performance based on real-time operational demands in automotive environments.
Does the MC9S12B64CFUE support CAN FD?
No, the MC9S12B64CFUE features the MSCAN12 module, which is compliant only with ISO 11898-1 CAN 2.0A/B protocols and does not support CAN FD data rates or frame formats. For CAN FD capability, designers should consider newer families such as S12Z or S32K - the MC9S12B64CFUE remains optimized for legacy CAN 2.0 automotive networks.
How many Wake-Up capable pins does the MC9S12B64CFUE have in its 112-pin LQFP package?
The MC9S12B64CFUE in the 112-pin LQFP package has 22 Wake-Up capable pins: Port H (8 pins), Port P (8 pins), Port J (4 pins), plus IRQ and XIRQ inputs. These pins support edge-triggered interrupts from STOP or WAIT low-power modes - essential for battery-conscious automotive modules requiring rapid response to user or sensor events.
What debug interface does the MC9S12B64CFUE use, and is JTAG supported?
The MC9S12B64CFUE uses Freescale's proprietary single-wire Background Debug Mode (BDM) interface, accessed via the BKGD pin. It does not support standard JTAG; BDM provides full flash programming, real-time register inspection, and hardware breakpoints without halting CPU execution - making it ideal for production programming and field firmware updates in automotive ECUs.
Is the MC9S12B64CFUE RoHS-compliant and lead-free?
Yes, RoHS-compliant and Pb-free versions of the MC9S12B64CFUE are available. These variants maintain identical functionality and electrical characteristics as their non-RoHS counterparts, meeting global environmental regulations without design or layout changes - confirmed by Freescale's official product documentation and packaging markings.
MC9S12B64CFUE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Not Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, I2C, SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 59
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12B64CFUE FAQ
1.How can I place an order for MC9S12B64CFUE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12B64CFUE 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 MC9S12B64CFUE reliable?
The price and inventory of MC9S12B64CFUE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12B64CFUE is usually 5 days.
3.What payment methods are accepted for MC9S12B64CFUE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12B64CFUE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12B64CFUE?
MC9S12B64CFUE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12B64CFUE 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 MC9S12B64CFUE?
For technical support, including MC9S12B64CFUE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12B64CFUE requirements.
6.How does Aetrix verify that MC9S12B64CFUE is sourced from the original manufacturer or authorized distributors?
All MC9S12B64CFUE 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 MC9S12B64CFUE meets industry standards.
7.What is the process for return or replacement of MC9S12B64CFUE?
All MC9S12B64CFUE units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12B64CFUE, 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 MC9S12B64CFUE part is unused and in its original packaging.
Return procedure for MC9S12B64CFUE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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