參數(shù)資料
型號: WEDPN8M72VR-66I
廠商: WHITE ELECTRONIC DESIGNS CORP
元件分類: DRAM
英文描述: 8M X 72 SYNCHRONOUS DRAM MODULE, 7.5 ns, PBGA219
封裝: 32 X 25 MM, PLASTIC, BGA-219
文件頁數(shù): 2/12頁
文件大小: 208K
代理商: WEDPN8M72VR-66I
10
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
WEDPN8M72VR-XBX
Parameter
Symbol
-100
-66
Unit
Min
Max
Min
Max
Access time from CLK (pos. edge)
CL = 3
tAC
6
7.5
ns
CL = 2
tAC
69
ns
Address hold time
tAH
11
ns
Address setup time
tAS
22
ns
CLK high-level width
tCH
33
ns
CLK low-level width
tCL
33
ns
Clock cycle time (22)
CL = 3
tCK
810
ns
CL = 2
tCK
12
15
ns
CKE hold time
tCKH
11
ns
CKE setup time
tCKS
22
ns
CS, RAS, CAS, WE, DQM hold time
tCMH
11
ns
CS, RAS, CAS, WE, DQM setup time
tCMS
22
ns
Data-in hold time
tDH
11
ns
Data-in setup time
tDS
22
ns
Data-out high-impedance time
CL = 3 (10)
tHZ
68
ns
CL = 2 (10)
tHZ
710
ns
Data-out low-impedance time
tLZ
12
ns
Data-out hold time (load)
tOH
33
ns
Data-out hold time (no load) (26)
tOHN
1.8
ns
ACTIVE to PRECHARGE command
tRAS
50
120,000
60
120,000
ns
ACTIVE to ACTIVE command period
tRC
70
ns
ACTIVE to READ or WRITE delay
tRCD
20
30
ns
Refresh period (4,096 rows) – Commercial, Industrial
tREF
64
ms
Refresh period (4,096 rows) – Military
tREF
16
ms
AUTO REFRESH period
tRFC
70
90
ns
PRECHARGE command period
tRP
20
30
ns
ACTIVE bank A to ACTIVE bank B command
tRRD
20
ns
Transition time (7)
tT
0.3
1.2
1
1.2
ns
WRITE recovery time
(23)
tWR
1 CLK + 7ns
(24)
15
ns
Exit SELF REFRESH to ACTIVE command
tXSR
80
90
ns
ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CHARACTERISTICS
(Notes 5, 6, 8, 9, 11)
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