M66256FP

MITSUBISHI MITSUBISHI 〈DIGITAL 〈DIGITAL ASSP ASSP 〉 〉 M66256FP M66256FP 5120 × 8-BIT LINE MEMORY (FIFO) 5120 × 8-BIT LINE MEMORY (FIFO) DESCRIPTION The M66256FP is a high-speed line memory with a FIFO (First In First Out) structure of 5120-word × 8-bit configuration which uses high-performance silicon gate CMOS process technology. It has separate clock, enable and reset signals for write and read, and is most suitable as a buffer memory between devices with different data processing throughput. FEATURES Memory configuration ........................................................ ............................. 5120 words × 8-bits (dynamic memory) High-speed cycle ............................................. 25ns (Min.) High-speed access ......................................... 18ns (Max.) Output hold ........................................................ 3ns (Min.) Fully independent, asynchronous write and read operations Variable length delay bit Output .................................................................... 3 states APPLICATION Digital photocopiers, high-speed facsimile, laser beam printers. PIN CONFIGURATION (TOP VIEW) Q0 ← 1 Q1 ← 2 DATA OUTPUT Q2 ← 3 Q3 ← 4 READ ENABLE INPUT RE → 5 24 ← D0 23 ← D1 22 ← D2 21 ← D3 20 ← WE WRITE ENABLE INPUT DATA INPUT M66256FP READ RESET INPUT RRES→ 6 GND 7 READ CLOCK INPUT RCK → 8 Q4 ← 9 Q5 ← 10 DATA OUTPUT Q6 ← 11 Q7 ← 12 19 ← WRES WRITE RESET INPUT 18 VCC 17 ← WCK WRITE CLOCK INPUT 16 ← D4 15 ← D5 1...