AL422B Datasheet, PDF (1/2 Pages) AverLogic Technologies Inc – 3M-Bit Frame Buffer

AL422B
3M-Bit Frame Buffer
Applications
Multimedia systems
Video capture systems
Video editing systems
Scan rate converters
TV’s picture in picture feature
Anti-skip CD players
Description
The AL422B is a First-In-First-Output
(FIFO) video frame memory used to buffer
audio/video/graphic data for digital
processing, timing correction, or format
conversion. It is manufactured with state-of-
the-art embedded memory technology for
applications in TVs, VCRs, scan converters,
and digital video systems.
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
Ordering Information
Part number
Package
AL422B 28-pin plastic SOP
Power supply
+3.3 volt
DO0 DO1 DO2 DO3 /RE GND /OE /RRST RCK DEC DO4 DO5 DO6 DO7
28 27 26 25 24 23 22 21 20 19 18 17 16 15
AL422B
1 2 3 4 5 6 7 8 9 10 11 12 13 14
DI0 DI1 DI2 DI3 /WE GND TST /WRST WCK VDD DI4 DI5 DI6 DI7
AL422-04 422B pinout diagram