AL422B AVERLOGIC | Alldatasheet
Document overview
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- PDF pages: 2
Technical content
Features
- 384K (393,216) x 8 bits FIFO organization
- Supports VGA and CCIR resolutions
- Independent read/write operations (different I/O data rates acceptable)
- High speed independent 8 - bit data I/O port operations
- Maximum operating speed grade: 50Mhz
- Access time: 15 ns
- Output enable control (data skipping)
- 3. 3V power supply with 5V signal input tolerant
- Standard 28 - pin SOP package 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 DI0 DI1 DI2 DI3 /WE GND TST /WRST WCK VDD DI4 DI5 DI6 DI7 DO0 DO1 DO2 DO3 /RE GND /OE /RRST RCK DEC DO4 DO5 DO6 DO7 AL422B AL422-04 422B pinout diagram
A VER L OGIC T ECHNOLOGIES , I NC . TEL : 1 408 361 - 0400 e - mail: sales@averlogic.com URL: www.averlogic.com February 28, 2002 The AL422 B consis ts of 3Mbits of memory, and is configured as 393,216 words x 8 bit FIFO (first in first out). The built - in address and pointer control circuits provide a straightforward bus interface to serially read/write memory that can reduce inter - chip design efforts . The 8 - bit read/write ports can operate independently at a maximum speed of 50Mhz . Current sources of similar memory (field memory) in the market provide limited memory size which is only enough for holding a TV field, but not enough for a whole PC v ideo frame which normally contains 640x480 or 720x480 bytes. The AverLogic AL422 provides 50% more memory to support high resolution for digital PC graphic or video applications. The 50% increase in speed also expands the range of applications. For more information about the AL422 B or other AverLogic products, please contact your local authorized distributor, representative, visit our website, or contact us directly. D ISTRIBUTED BY :