IDT723653

CMOS SyncFIFOTM WITH BUS-MATCHING 2,048 x 36 4,096 x 36 8,192 x 36 www.DataSheet4U.com IDT723653 IDT723663 IDT723673 FEATURES Memory storage capacity: IDT723653 – 2,048 x 36 IDT723663 – 4,096 x 36 IDT723673 – 8,192 x 36 Clock frequencies up to 83 MHz (8 ns access time) Clocked FIFO buffering data from Port A to Port B IDT Standard timing (using EF and FF) or First Word Fall Through Timing (using OR and IR flag functions) Programmable Almost-Empty and Almost-Full flags; each has five default offsets (8, 16, 64, 256 and 1,024) Serial or parallel programming of partial flags Port B bus sizing of 36 bits (long word), 18 bits (word) and 9 bits (byte) Big- or Little-Endian format for word and byte bus sizes Retransmit Capability Reset clears data and configures FIFO, Partial Reset clears data but retains configuration settings Mailbox bypass registers for each FIFO Free-running CLKA and CLKB may be asynchronous or coincident (simultaneous reading and writing of data on a single clock edge is permitted) Easily expandable in width and depth Auto power down minimizes power dissipation Available in a space-saving 128-pin Thin Quad Flatpack (TQFP) Pin compatible with the lower density parts, IDT723623/723633/ 723643 Industrial temperature range (–40°C to +85°C) is available FUNCTIONAL BLOCK DIAGRAM MBF1 Mail 1 Register Port-A Control Logic BusMatching Input Register Output Register 36 CLKA CSA W/RA ENA MBA RS1 RS2 PRS RAM ARRAY 36 FIFO1 Mai...