LH52258AK-20 データシートの表示（PDF） - Sharp Electronics
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LH52258AK-20 Datasheet PDF : 9 Pages
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LH52258A
CMOS 32K × 8 Static RAM
A4
A5
A1
A2
MEMORY ARRAY
A6
(32,768 x 8)
A7
A12
A14
DQ0 - DQ7
8
E
W
G
I/O CIRCUIT
8
BLOCK
DECODE
COLUMN
DECODE
A0 A3 A10 A11 A9 A8 A13
8
Figure 2. LH52258A Block Diagram
52258A-2
TRUTH TABLE
EGW
MODE
H X X Not Selected
L H H Selected
L L H Read
L X L Write
DQ
High-Z
High-Z
Data Out
Data In
ICC
Standby
Active
Active
Active
PIN DESCRIPTIONS
PIN
A0 – A14
DQ0 – DQ7
E
G
W
VCC
VSS
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
Positive Power Supply
Ground
2
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