參數(shù)資料
型號(hào): ADD8608A8A
廠商: ADATA Technology Co., Ltd.
英文描述: Double Data Rate SDRAM
中文描述: 雙倍數(shù)據(jù)速率SDRAM
文件頁(yè)數(shù): 5/9頁(yè)
文件大?。?/td> 549K
代理商: ADD8608A8A
A-Data
ADD8608A8A
AC Operating Condition
Voltage referenced to Vss = 0V, T
A
= 0 to 70
Parameter
Symbol
Value
Unit
Note
AC input high / low level voltage
V
IH
/ V
IL
VREF+0.31/VREF-0.31
V
Input timing measurement reference level voltage
Vtrip
1.4
V
Input rise / fall time
TR / tF
1
Ns
Output timing measurement reference level
Voutfef
1.4
V
Output load capacitance for access time measurement
CL
50
pF
2
Note:
1. 3.15V
V
DD
3.6V is applied for VDD8608A4A5.
2. Output load to measure access times is equivalent to two TTL gates and one capacitor (30pF). For details,
refer to AC/DC output load circuit.
Capacitance
TA=25
, f-=1Mhz
Parameter
Pin
Symbol
Min
Max
Unit
CK, /CK
Cl1
2
3.0
pF
Input capacitance
A0~A12,BS0,BS1,CKE,/CS,/RAS,
/CAS,/WE,DQM
Cl2
2
3.0
pF
Data input / output capacitance DQM
CI/O
4
5
pF
Output load circuit
Output Load Circuit (SSTL_2)
Output
Z0=50
C
LOAD
=30pF
V
REF
=0.5*V
DDQ
R
T
=50
V
tt
=0.5*V
DDQ
Rev 2 April, 2002
5
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