參數(shù)資料
型號(hào): HM67S18258
廠商: Hitachi,Ltd.
英文描述: 4M Synchronous Fast Static RAM (256k-words ×18-bits)(4M 同步快速靜態(tài)RAM (256k字 ×18位))
中文描述: 4分同步快速靜態(tài)存儲(chǔ)器(256k -字× 18位)(4分同步快速靜態(tài)隨機(jī)存儲(chǔ)器(256k字× 18位))
文件頁(yè)數(shù): 9/24頁(yè)
文件大?。?/td> 184K
代理商: HM67S18258
HM67S18258 Series
9
AC Characteristics
(Ta = 0
°
to 70
°
C [Tj max = 110
°
C], V
DD
=3.3V
±
5%)
Single Differential Clock Register-Latch Mode (M1 = V
DD
, M2 = V
SS
)
-7
Parameter
Symbol
Min
Max
Unit
Notes
Clock Control
Clock Cycle
Clock High Width
Clock Low Width
t
KHKH
t
KHKL
t
KLKH
8.0
2.0
2.0
ns
ns
ns
Read Control
K Clock Access
K Clock Access
Output Enable Access
K Low to Q Change
t
KHQV
t
KLQV
t
GLQV
t
KLQX
1.0
7.0
3.0
3.5
ns
ns
ns
ns
Output Buffer Control
K Low to Low-Z
Output Enable to Low-Z
K Clock High to Hi-Z
Output Enable to Hi-Z
t
KLQX2
t
GLQX
t
KHQZ
t
GHQZ
1.0
1.0
1.0
0.0
3.5
3.5
ns
ns
ns
ns
1
1
2
2
Setup Times
Address Setup Time
Data Setup Time
t
AVKH
t
DVKH
0.5
0.5
ns
ns
SA,
SS
,
SWE
,
SWEa
,
SWEc
Hold Times
Address Hold Time
Data Hold Time
Notes: 1. Transition is measured
±
200 mV from steady voltage with specified loading in Test Load.
2. Transition is measured start point of output high impedance from output Low impedance.
t
KHAX
t
KHDX
1.0
1.0
ns
ns
SA,
SS
,
SWE
,
SWEa
,
SWEc
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