UT51C164JC-25 查看數據表（PDF） - Utron Technology Inc
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UT51C164JC-25 Datasheet PDF : 26 Pages
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UTRON
Rev 1.5
UT51C164
256K X 16 BIT EDO DRAM
TRUTH TABLE
FUNCTION
RAS LCAS
Standby
H
H
Read: Word
L
L
Read: Lower Byte L
L
Read: Upper Byte L
H
Write: Word
(Early-Write)
L
L
Write: Lower Byte
(Early-Write)
L
L
Write: Upper Byte
(Early-Write)
L
H
Read-Write
L
L
EDO Page-Mode
Read
L
EDO Page-Mode
Write
L
EDO Page –Mode
Read-Write
L
Hidden Refresh
Read
L→H→L
H→L
H→L
H→L
L
RAS Only
Refresh
CBR Refresh
L
H
H→L
L
UCAS
H
L
H
L
L
H
L
L
H→L
H→L
H→L
L
H
L
WE OE ADDRESS DQ(0-7) DQ(8-15) NOTE
X
XX
High-Z High-Z
H
L ROW/COL DQ-OUT
H
L ROW/COL DQ-OUT High-Z
H
L ROW/COL High-Z DQ-OUT
L
X ROW/COL DQ-IN
L
X ROW/COL DQ-IN High-Z
L
X ROW/COL High-Z DQ-IN
H→L L→H ROW/COL DQ-OUT,DQ-IN *1,2
H
L COL
DQ-OUT
*2
L
X COL
DQ-IN
*2
H→L L→H COL
DQ-OUT,DQ-IN *1,2
H
L ROW/COL DQ-OUT
*2
ROW
X
X
High-Z
X
XX
High-Z
Notes:
1. Byte Write cycles LCAS or UCAS active.
2. Byte Read cycles LCAS or UCAS active.
UTRON TECHNOLOGY INC.
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
10
P90005
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