sm5838a Nippon Precision Circuits Inc, (NPC), sm5838a Datasheet - Page 13

• Manufacturer Part Number: sm5838a
• Description: 5120 ? 8-bit Synchronous Fifo
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

Wipe Function (Screen Switching)
Because RE and OE operate independently, a screen wipe function can be realized using 2 SM5838AS devices
by switching OE LOW/HIGH in field units.
Screen wipe (OE changes in field units)
(A)DOUT
(B)DOUT
(A)DIN
(B)DIN
(A)OE
(A)RE
(A)RR
(B)OE
(B)RR
(B)RE
CLK
WE
RW
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5
0
1 2 3
nH'-1H
nH'-2H
nH-1H
nH-2H
4 5
909
909
909
909
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3
(B)
Screen wipe image (left to right)
nH'-1H
nH-1H
4 5
nH'
nH
SM5838AS
909
909
909
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3
(A)
nH'+1H
nH+1H
4 5
nH'
nH
909
909
909
SEIKO NPC CORPORATION —13
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3
nH'+2H
nH'+1H
nH+2H
nH+1H
4 5
909
909
909