The Ricoh R5C475II-LQFP144 is a PCI Express (PCIe) card reader controller that facilitates high-speed data transfer between various memory cards and a host system. The 'LQFP144' indicates the package type: a Low-profile Quad Flat Package with 144 pins. It is part of the R5C475II series, recognized for its broad memory card format support and PCIe interface, making it suitable for diverse applications.

Applications

• Desktop Computers
• Motherboards
• Embedded Systems with PCIe expansion
• Industrial PCs
• Data Logging Equipment

Features

• PCI Express Interface: Supports high-speed data transfer compliant with PCIe specifications.
• Multi-Card Support: Compatible with a variety of memory card formats, including SD, SDHC, SDXC, MMC, Memory Stick (MS), MS Pro, and xD-Picture Card.
• DMA (Direct Memory Access): Enables efficient data transfer between the memory card and system memory without significant CPU involvement.
• Card Detect Pins: Provides hardware-based detection of card insertion and removal events.
• Power Management Features: Includes power-saving modes to optimize energy consumption.
• LQFP144 Package: A standard package suitable for various board assembly techniques.
• Compliant with PCI Express Base Specification: Adheres to the established standards defined by the PCI-SIG.

Benefits

• High-Speed Data Transfer: The PCIe interface enables fast and efficient data exchange with memory cards.
• Wide Card Compatibility: Support for numerous memory card formats provides versatility for different applications.
• Efficient Data Handling: DMA support reduces the processing load on the CPU during data transfer operations.
• Easy Integration: Compliance with PCIe standards simplifies integration into standard systems.
• Power Efficiency: Power management features help to minimize energy usage.
• Standard Package: The LQFP144 package is widely used and easy to handle during manufacturing.

Additional Details

The R5C475II-LQFP144 interfaces with the host system via a PCI Express slot, offering a high-bandwidth communication path. It supports various memory card protocols, allowing seamless data exchange with different card types. The LQFP144 package provides a balance between size and ease of assembly. The device includes built-in card detection capabilities, enabling the system to automatically detect card insertion and removal. For proper functionality, appropriate driver support is necessary, often supplied by Ricoh or integrated into the operating system. Detailed technical specifications, including operating voltage, power consumption, and supported data transfer rates, can be found in the Ricoh R5C475II-LQFP144 datasheet.