FIFO
µPD42280GU-30 - 2 Mbit FIELD BUFFER FIFO - SO28 256K words × 8 bit FIFO configurationWrite/read operations are possible asynchronously and simultaneously
µPD485505G-25 - 5k x 8bit high speed FIFO (First In First Out) line buffer - SO24 5,048 words by 8 bits• Asynchronous read/write operations available• Variable length delay bits; 21 to 5,048 bits (Cycle time: 25 ns)15 to 5,048 bits (Cycle time: 35 ns)• Power supply voltage VCC = 5.0 V ± 0.5 V• Suitable for sampling one line of A3 size paper (16 dots/mm)• All input/output TTL compatible• 3-state output• Full static operation; data hold time = infinity