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82S21 54-BIT BIPOLAR HIGH SPEED
WRITE-WHILE-READ RAM (32x2 RAM)
DIGITAL 8000 SERIES TTL/MEMORY
DESCRIPTION
The 82S21 is a TTL 64 bit Write-While-Read Random Access Memory organized in 32 words of 2 bits each. The 82S21 is ideally suited for high speed buffers and as the memory element in high speed accumulators.
APPLICATIONS
SCRATCH PAD MEMORY BUFFER MEMORY ACCUMULATOR REGISTER CONTROL STORE
Words are selected through a 5 input decoder when the Read-Write enable input, CE is at logic "1". Wo and Wl ~e the write inputs for bit 0 and bit ~f the ~rd selected. C is the write control input. When Wx and C are both at logic "0" data on the 10 and 11 data lines are written into the addressed word. The read function is enabled when either Wx or Cis at logiC "1".
82S21 Datasheet
