M66258FP Datasheet - 8192 x 8-BIT LINE MEMORY

MITSUBISHI M66258FP 8192 x 8-BIT LINE MEMORY DESCRIPTION The M66258FP is high speed line memory that us...

MITSUBISHI M66258FP 8192 x 8-BIT LINE MEMORY DESCRIPTION The M66258FP is high speed line memory that uses high performance silicon gate CMOS process technology and adopts the FIFO (First In First Out) structure consisting of 8192 words x 8 bits. The M66258FP, performing reading and writing operations at different cycles independently and asynchronously, is optimal for buffer memory to be used between equipment of different data processing speeds. PIN CONFIGURATION (TOP VIEW) Q0 Q1 DATA OUTPUT Q2 Q3 READ ENABLE RE INPUT READ RESET RRES INPUT GND READ CLOCK INPUT RCK Q4 DATA OUTPUT 1 2 3 4 5 6 7 8 9 24 D0 23 D1 22 D2 21 D3 WRITE ENABLE INPUT 19 WRES WRITE RESET INPUT 20 WE 18 VCC 17 WCK 16 D4 15 D5 DATA INPUT 14 D6 13 D7 WRITE CLOCK INPUT DATA INPUT FEATURES Memory configuration 8192 words x 8 bits configuration High speed cycle 20 ns (Min.) High speed access 16 ns (Max.) Output hold 3 ns (Min.) Reading and writing operations can be completely carried out independently and asynchronously. Variable length delay bit Input/output TTL direct connection allowable Output 3 states M66258FP Q5 10 Q6 11 Q7 12 APPLICATION Digital copying machine, laser beam printer, high speed facsimile, etc. Outline 24P2U-A(SSOP) FUNCTIONAL DESCRIPTION When write enable input WE is set to "L", the contents of data inputs D0 to D7 are read in synchronization with a rising edge of write lock input WCK to perform writing operation. When this is the case,the writ...