參數(shù)資料
型號: HM621664HB
廠商: Hitachi,Ltd.
英文描述: 1 M High Speed SRAM (64-kword ×16-bit)(1 M 高速 SRAM (64k字 ×16位))
中文描述: 高1米高速SRAM(64 KWord的× 16位)(1米高速靜態(tài)存儲器(64K的字× 16位))
文件頁數(shù): 3/16頁
文件大?。?/td> 116K
代理商: HM621664HB
HM621664HB Series
3
Block Diagram
I/O1
WE
CS
LB
Input
data
control
Memory matrix
256 rows x
256 columns x 16 bit
(1,048,576 bits)
Row
decoder
OE
CS
CS
V
CC
V
SS
CS
UB
I/O16
I/O9
I/O8
.
.
A3
A2
A1
A0
A7
A6
A5
A4
A12 A11 A10 A15 A14 A13 A9 A8
Column I/O
Column decoder
(LSB)
(MSB)
(LSB)
(MSB)
Function Table
CS
OE
WE
LB
UB
Mode
V
CC
current
I
SB
, I
SB1
I
CC
I
CC
I/O1–I/O8
I/O9–I/O16
Ref. cycle
H
×
×
×
×
×
×
Standby
High-Z
High-Z
L
H
H
Output disable
High-Z
High-Z
L
L
H
L
L
Read
Output
Output
Read cycle
L
L
H
L
H
Lower byte read I
CC
Upper byte read I
CC
Output
High-Z
Read cycle
L
L
H
H
L
High-Z
Output
Read cycle
L
L
H
H
H
I
CC
I
CC
High-Z
High-Z
L
×
×
×
×
L
L
L
Write
Input
Input
Write cycle
L
L
L
H
Lower byte write I
CC
Upper byte write I
CC
Input
High-Z
Write cycle
L
L
H
L
High-Z
Input
Write cycle
L
Note:
L
H
H
I
CC
High-Z
High-Z
×
: H or L
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