The C167CSL40MCAKXQMA2 is a sophisticated 16-bit ROMless microcontroller manufactured by Cypress Semiconductor, now part of Infineon Technologies, belonging to the Embedded Microcontrollers category within Integrated Circuits. This high-performance MCU is built around the powerful C166 core processor operating at 40MHz, designed to address demanding embedded system challenges where external program memory flexibility, robust peripheral integration, and reliable operation across extreme temperature ranges are critical requirements.
This microcontroller features a ROMless architecture, meaning it requires external memory for program storage, which provides exceptional flexibility for applications requiring frequent firmware updates, large code spaces, or custom memory configurations. The device incorporates 11K x 8 RAM for data storage and processing, while offering an impressive array of 111 I/O pins for extensive interfacing capabilities. The integrated 24-channel 10-bit analog-to-digital converter enables precise analog signal acquisition, making it suitable for sensor-intensive applications and mixed-signal designs.
Connectivity options are comprehensive, including CANbus for automotive and industrial networking, EBI/EMI (External Bus Interface/External Memory Interface) for memory expansion, SPI for high-speed serial communication, and UART/USART for standard serial protocols. Essential peripherals include Power-On Reset (POR) for reliable startup, Pulse Width Modulation (PWM) for motor control and power management, and a Watchdog Timer (WDT) for system reliability and fault recovery. The device operates from a 4.5V to 5.5V supply voltage with an external oscillator configuration, ensuring stable timing in various system architectures.
Housed in a P-MQFP-144-8 package (144-pin Plastic Metric Quad Flat Pack), this surface-mount component is optimized for space-constrained PCB designs while maintaining excellent thermal performance. The industrial-grade operating temperature range of -40°C to 125°C makes it ideal for harsh environment applications including automotive engine management systems, industrial automation controllers, motor drives, building automation, medical equipment, and telecommunications infrastructure where reliability under extreme conditions is paramount.
Equivalent and alternative models within the C16xx series include various C167 family derivatives such as the C167CR (with internal ROM/Flash), C167CS (different memory configurations), and other speed grades like the C167CSL25 (25MHz) or C167CSL32 (32MHz). Compatible alternatives from other manufacturers include Infineon's XC167 series, STMicroelectronics' ST10 family, and certain Renesas M16C microcontrollers that share similar 16-bit architecture and peripheral sets, though pin-out and software compatibility should be verified for direct replacement scenarios.
C167CSL40MCAKXQLA2 Key Technical Attributes
16-bit core, 40MHz speed, 111 I/O
ROMless program memory, 11K x 8 RAM
Operating temperature -40°C to 125°C
C167CSL40MCAKXQLA2 Packing Size
The C167CSL40MCAKXQLA2 is housed in a P-MQFP-144-8 package, which is a plastic molded quad flat package with 144 pins, offering robust surface mount technology. The package dimensions are industry standard for 144-BQFP cases, facilitating easy integration into advanced circuit designs. Each device is provided on trays that ensure optimal protection during transit and storage. The tray packing also aids in automated assembly processes. With excellent thermal characteristics, it supports sustained high-performance operation across the full industrial temperature range. Electrically, this package type maintains reliable signal integrity for the 40MHz operation.
C167CSL40MCAKXQLA2 Application
The C167CSL40MCAKXQLA2 is ideally suited for high-performance embedded applications such as industrial automation, automotive control systems, communication infrastructures, and advanced instrumentation. Its extensive I/O support and integrated peripherals make it versatile for use in systems requiring real-time data processing, sophisticated connectivity, and robust safety features. Typical use cases include motor control units, CAN network nodes, programmable logic controllers, safety control modules, and intelligent sensor hubs.
C167CSL40MCAKXQLA2 Features
This microcontroller integrates a 16-bit C166 core operating at 40MHz, offering high processing throughput while supporting advanced real-time control algorithms. The ROMless architecture allows developers to pair the MCU with external memory, optimizing development flexibility and firmware upgrade options. It features a generous 11K x 8 RAM and a comprehensive set of 111 user-configurable I/O lines, affording broad connectivity and device interfacing capabilities.
Integrated on-chip peripherals include a Power-On Reset (POR) for safe starts, Programmable Watchdog Timer (WDT) for fail-safe operation, and Pulse Width Modulation (PWM) support for motor and power control. The highly flexible data converters offer 24 channels of 10-bit A/D, enabling precise analog signal interfacing. For communication, the device supports a wide array of interfaces, including CANbus for automotive and industrial networks, EBI/EMI for external memory interfacing, SPI for synchronous serial communication, and UART/USART for standard serial protocols. The external oscillator source allows for customizable system clocking.
Compliant with wide voltage supply (4.5V to 5.5V), it ensures operation in various power environments. Its tray packaging allows for efficient automated production workflows and enhanced component protection.
C167CSL40MCAKXQLA2 Quality and Safety Features
The C167CSL40MCAKXQLA2 boasts robust operational features for reliability in mission-critical environments, including industrial-grade extended temperature support from -40°C to 125°C. Integrated Power-On Reset and Watchdog Timer are designed to maximize system safety and prevent errant firmware execution. High pin-count packaging enhances ESD protection and ensures secure mounting, while diagnostic and monitoring capabilities throughout the peripheral set support high reliability and error detection in safety-related applications.
C167CSL40MCAKXQLA2 Compatibility
This device belongs to the C16xx series, making it compatible with other devices in the family—including hardware and software toolchains for C166 architecture. The ROMless design allows developers to select suitable external ROM components, providing upgrade and migration flexibility. Its standard communication interfaces such as CANbus, SPI, and UART/USART, ensure effortless integration into modern embedded designs.
C167CSL40MCAKXQLA2 Datasheet PDF
For customers seeking comprehensive, authoritative technical documentation, our website features the most up-to-date and detailed datasheet for the C167CSL40MCAKXQLA2. We highly recommend downloading the official PDF on the current page to ensure access to accurate electrical, mechanical, and application guides direct from the manufacturer.
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