The C167CSLMCAFXQLA2 from Cypress Semiconductor (now part of Infineon Technologies) is a sophisticated 16-bit microcontroller designed for embedded applications requiring high performance and extensive peripheral integration. This ROMless MCU belongs to the renowned C16xx series and operates at a speed of 25MHz with a C166 core processor, making it suitable for demanding real-time control applications across industrial, automotive, and communication systems.
This microcontroller addresses critical design challenges in embedded systems by offering a ROMless architecture, which provides maximum flexibility for developers who need to implement custom memory solutions or require frequent firmware updates without being constrained by fixed internal program memory. The device features 11K x 8 RAM size for data storage and processing, while the 16-bit core size ensures efficient handling of complex computational tasks. Operating within a voltage supply range of 4.5V to 5.5V and across an industrial temperature range of -40°C to 85°C, this component delivers reliable performance in harsh environmental conditions.
Key specifications include an impressive 111 I/O pins housed in a 144-BQFP (P-MQFP-144-8) surface mount package, providing extensive connectivity options for interfacing with external devices and sensors. The microcontroller integrates essential peripherals including Power-On Reset (POR), Pulse Width Modulation (PWM), and Watchdog Timer (WDT) for enhanced system reliability and control. Its comprehensive connectivity suite encompasses CANbus for automotive and industrial networking, EBI/EMI for external memory interfacing, SPI for high-speed serial communication, and UART/USART for standard serial protocols. The integrated 24-channel 10-bit analog-to-digital converter enables precise analog signal acquisition, while the external oscillator type allows designers to select optimal timing sources for their specific applications.
Primary advantages include the flexible ROMless design that accommodates various external memory configurations, extensive I/O capability for complex system integration, robust industrial-grade temperature tolerance, and comprehensive peripheral integration that reduces external component count and overall system cost. The device is supplied in tray packaging with 2649 units available, making it suitable for medium to large-scale production runs.
This microcontroller finds primary application in automotive control systems, industrial automation, motor control applications, communication gateways, building automation, and embedded control systems requiring CANbus connectivity. Equivalent or alternative models within the C16xx family include the C167CR series with integrated ROM/Flash memory, C161 variants offering different memory and peripheral configurations, and other C166 family derivatives from Infineon such as the XC167 series with enhanced features, providing designers with scalable options based on specific memory requirements and feature sets.
C167CSLMCAFXQLA2 Key Technical Attributes
IC MCU 16-Bit ROMless
25MHz Core Speed
C167CSLMCAFXQLA2 Packing Size
Surface mount package: P-MQFP-144-8
Package material: Standard tray
Dimensions correspond to 144-pin Quad Flat Package (QFP) with 111 I/O pins
C167CSLMCAFXQLA2 Application
C167CSLMCAFXQLA2 is widely used in industrial control systems, automotive electronics, and embedded automation. Its robust 16-bit architecture and CANbus connectivity make it highly suitable for real-time data processing in complex networked devices, sensor interfacing platforms, and mission-critical microcontroller applications requiring reliability and high performance.
C167CSLMCAFXQLA2 Features
This microcontroller features a powerful 25MHz C166 core processor capable of efficient task management, low latency interrupt handling, and deterministic performance. Its complex peripheral set includes Power-On Reset (POR), Pulse Width Modulation (PWM), and Watchdog Timer (WDT) for system safety and precision control. Connectivity options such as CANbus, SPI, EBI/EMI, and UART/USART enable seamless integration with a diverse range of sensors and external modules. It supports up to 111 general-purpose I/O pins, allowing for extensive device interconnectivity. The chip incorporates a high-resolution 24-channel 10-bit ADC for precise analog-digital conversion. The external oscillator capability helps maintain timing stability. The IC is ROMless, giving developers flexibility in memory selection and firmware security.
C167CSLMCAFXQLA2 Quality and Safety Features
C167CSLMCAFXQLA2 is engineered to comply with industry-quality standards and optimized safety protocols. Equipped with watchdog protection and power-on-reset mechanisms, the IC helps ensure safe system startup and maintains integrity against unexpected faults. The operating temperature range of -40°C to +85°C supports deployment in harsh environments, contributing to improved operational reliability. Cypress/Infineon’s manufacturing guarantees strict quality assurance for all electrical parameters.
C167CSLMCAFXQLA2 Compatibility
The device boasts broad compatibility with a variety of programming and debugging interfaces, and communicates effectively with standard embedded peripherals using CAN, SPI, UART/USART, and EBI/EMI. Its surface mount package design allows for direct integration into PCBs using automated assembly lines, making it ideal for both large-scale industrial applications and custom projects.
C167CSLMCAFXQLA2 Datasheet PDF
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