參數(shù)資料
型號: HM62G18256
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)存儲器(256k -字× 18位)(4分同步快速靜態(tài)隨機存儲器(256k字× 18位))
文件頁數(shù): 7/24頁
文件大?。?/td> 194K
代理商: HM62G18256
HM62G18256 Series
7
Recommended DC Operating Conditions
(Ta = 0 to 70
°
C [Tj max = 110
°
C])
Parameter
Symbol
Min
Typ
Max
Unit
Notes
Power Supply voltage -- Core
V
DD
V
DDQ
V
REF
V
IH
V
IL
V
DIF
V
CM
3.135
3.30
3.63
V
Power Supply voltage -- I/O
1.4
1.5
1.6
V
Input Reference Voltage -- I/O
0.65
0.75
0.90
V
1
Input High Voltage
V
REF
+0.1
–0.5
V
DDQ
+0.3
V
REF
–0.1
V
DDQ
+0.3
0.90
V
Input Low Voltage
V
Clock Differential Voltage
0.1
V
2, 3
Clock Common Mode Voltage
Notes : 1. Peak to Peak AC component superimposed on V
ref
may not exceed 5% of V
ref
.
2. Minimum differential input voltage required for differential input clock operation.
3. See Figure 1.
0.55
V
3
VDDQ
VSS
V
DIF
V
CM
Figure 1. Diffrential Voltage / Common Mode Voltage
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