STMicroelectronics

A7985ATR

The A7985ATR is a high-performance, low-power, single-chip solution from STMicroelectronics for USB to SD/MMC card reader applications. It is designed to meet the demands of high-speed data transfer and low-power consumption in various portable devices.

Description:

The A7985ATR is a USB 2.0 full-speed function controller with an integrated SD/MMC card interface. It is designed to support SD, SDHC, and MMC memory cards, providing a versatile solution for USB to card reader applications. The device is available in a compact QFN package, making it suitable for space-constrained designs.

Features:

1. USB 2.0 full-speed interface with support for high-speed operation
2. Integrated SD/MMC card interface supporting SD, SDHC, and MMC memory cards
3. Low-power consumption with power management features
4. Supports high-speed data transfer rates up to 480 Mbps
5. Compact QFN package for space-constrained designs
6. Supports multiple file systems, including FAT12, FAT16, and FAT32
7. Supports USB Mass Storage Class (MSC) with BOT (Bulk-Only Transport) protocol
8. Provides easy integration with microcontrollers or microprocessors through a simple SPI interface
9. Robust error detection and handling mechanisms
10. Supports hot-swapping of memory cards

Applications:

1. Portable USB card readers for SD/SDHC/MMC memory cards
2. Digital cameras and camcorders with USB connectivity
3. Mobile phones and smartphones with USB and memory card support
4. USB flash drives with SD/MMC card slots
5. Media players and recorders with USB and memory card support
6. USB to SD/MMC card adapters
7. Industrial and medical equipment with USB and memory card storage
8. Data acquisition and logging systems with USB and memory card support
9. Embedded systems requiring USB and memory card storage capabilities
10. Storage devices for IoT applications and wearable devices

The A7985ATR offers a versatile and efficient solution for USB to SD/MMC card reader applications, providing high-speed data transfer, low-power consumption, and easy integration with various platforms.