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AT76C112

2372AS–DIGICAM–08/02

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.

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Image data acquisition from CMOS imagers

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Image display

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Image processing and image storing

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Overall system management

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Control of general-purpose I/O functions

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Data communication

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Control of user functions

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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.

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Communication with PCs

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Communication with Flash cards

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Serial communication ports for controlling other devices in the system

of hardware resources, controlled by ARM, perform digital imaging functions such as

JPEG coding/decoding, image resizing, and DMA access to SDRAM. All these compu-

tational-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

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Supports up to 16 megapixel CMOS imagers

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Interfaces to 16- to 256-Mbit SDRAM, one or two pieces

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15 frames/sec capture mode (VGA resolution)

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Up to 1.5M bytes/sec read/write from/to Flash cards

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2M bytes external Flash ROM for program space

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2M bytes external SRAM for program/working space (optional)

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Full-speed USB interface (mass storage and image class)

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Maximum 80 mA current in normal operation

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1 - 5 mA in standby mode

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50 - 100 µA current in sleep mode