Features • • • • • • • • • • • • • • • Baseline JPEG Compression/Decompression Image Resize Engine 16-bit YC Digital Interface for CMOS Imager Input and Display Output Compatible with Various Types of Display Devices SDRAM Interface – Support from 16M Bits to 256M Bits Support for all Flash Card Interfaces (Atmel DataFlash®, MMC, SD, SSFDC, CompactFlash, Memory Stick) USB and USART Interfaces for PC Camera Applications 4 Dedicated External Interrupts, Timer Clock Input and Wake-up Pin Serial Interface for Controlling Camera Components 32 Pins for General-purpose I/O Up to 2M Bytes Program Space Support for RTOS All Low-level Software, Application Samples are Provided 208-pin BGA Package 1.8-volt Core and 3.3-volt I/O Operation HighPerformance Digital Camera Processor Figure 1. Typical DSC Application Using AT76C112 CDS A/D RS232 Port (PC) USB (PC) SDRAM • Digital Inputs • Control • Push Buttons SDRAM I/F GPIO Serial Camera I/F AT76C112 YC I/F From Imager/ To Display Summary MPix AT76C112 USART USB External Memory I/F Flash • Flash • SRAM • CompactFlash Flash Card I/F • MMC/SPI/SD • SSFDC • DataFlash • Memory Stick Rev. 2372AS–DIGICAM–08/02 Note: This is a summary document. A complete document is available under NDA. For more information, please contact your local Atmel sales office. 1 Description The AT76C112 is a highly integrated solution for digital camera and image playback devices. It combines a number of functions that are required for implementing such devices. • Image data acquisition from CMOS imagers • Image display • Image processing and image storing • Overall system management • Control of general-purpose I/O functions • Data communication • Control of user functions • On-screen display It also provides a large number of interfaces that allow equipment manufacturers to directly access a variety of devices that may be present in a digital camera or image playback system. • Communication with PCs • Communication with Flash cards • Serial communication ports for controlling other devices in the system The design is based on an ARM® microprocessor that controls the entire chip. A number of hardware resources, controlled by ARM, perform digital imaging functions such as JPEG coding/decoding, image resizing, and DMA access to SDRAM. All these computational-intensive functions are implemented in hardware which can be programmed according to user specifications, thus allowing ARM to be free for other user-defined functions. Capabilities 2 • Supports up to 16 megapixel CMOS imagers • Interfaces to 16- to 256-Mbit SDRAM, one or two pieces • 15 frames/sec capture mode (VGA resolution) • Up to 1.5M bytes/sec read/write from/to Flash cards • 2M bytes external Flash ROM for program space • 2M bytes external SRAM for program/working space (optional) • Full-speed USB interface (mass storage and image class) • Maximum 80 mA current in normal operation • 1 - 5 mA in standby mode • 50 - 100 µA current in sleep mode AT76C112 2372AS–DIGICAM–08/02 Atmel Headquarters Atmel Operations Corporate Headquarters Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL (49) 71-31-67-0 FAX (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL (33) 2-40-18-18-18 FAX (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL (33) 4-76-58-30-00 FAX (33) 4-76-58-34-80 Zone Industrielle 13106 Rousset Cedex, France TEL (33) 4-42-53-60-00 FAX (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL (44) 1355-803-000 FAX (44) 1355-242-743 e-mail [email protected] Web Site http://www.atmel.com © Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ATMEL ® and DataFlash ® are the registered trademarks of Atmel. ARM ® is the registered trademark of ARM, Ltd. Other terms and product names may be the trademarks of others. Printed on recycled paper. 2372AS–DIGICAM–08/02 xM