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Mitsubishi - 8192 x 8-BIT LINE MEMORY

Numéro de référence M66282FP
Description 8192 x 8-BIT LINE MEMORY
Fabricant Mitsubishi 
Logo Mitsubishi 





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M66282FP fiche technique
MITSUBISHI <DIGITAL ASSP>
M66282FP
8192 x 8-BIT LINE MEMORY
DESCRIPTION
The M66282FP 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 M66282FP, 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.
FEATURES
• Memory configuration 8192 words x 8 bits (dynamic memory)
• High speed cycle
25 ns (Min.)
• High speed access
18 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
APPLICATION
• Digital copying machine, laser beam printer, high speed facsimile,
etc.
FUNCTION
When write enable input WEB 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 write address counter is also incremented simultaneously.
When WEB is set to "H", the writing operation is inhibited and the
write address counter stops.
When write reset input WRESB is set to "L", the write address
counter is initialized.
When read enable input REB is set to "L", the contents of memory
are output to data outputs Q0 to Q7 in synchronization with a rising
edge of read clock input RCK to perform reading operation. When
this is the case, the read address counter is incremented
simultaneously.
When REB is set to "H", the reading operation is inhibited and the
read address counter stops. The outputs are placed in a high
impedance state.
When read reset input RRESB is set to "L", the read address
counter is initialized.
PIN CONFIGURATION (TOP VIEW)
Q0 1
Q1 2
DATA OUTPUT
Q2 3
Q3
READ ENABLE
INPUT
REB
READ RESET
INPUT
RRESB
4
5
6
READ CLOCK
INPUT
GND 7
RCK 8
Q4 9
Q5 10
DATA OUTPUT
Q6 11
Q7 12
24 D0
23 D1
DATA INPUT
22 D2
21 D3
20 WEB
WRITE ENABLE
INPUT
19
WRESB
WRITE RESET
INPUT
18 VCC
17 WCK
WRITE CLOCK
INPUT
16 D4
15 D5
DATA INPUT
14 D6
13 D7
Outline 24P2Q-A(SSOP)
1

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