參數(shù)資料
型號: W9864G6DB-7
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 1M x 4 BANKS x 16 BITS SDRAM
中文描述: 4M X 16 SYNCHRONOUS DRAM, 5.5 ns, PBGA60
封裝: 0.65 MM PITCH, BGA-60
文件頁數(shù): 16/48頁
文件大?。?/td> 1283K
代理商: W9864G6DB-7
W986432DH
- 16 -
AC Characteristics
(V
CC
= 3.3V
±
0.3V, V
SS
= 0V, T
A
= 0 to 70
°
C for -5/-6/-7/-7L,T
A
= -40 to 85
°
C for -6I) (Notes: 5, 6)
PARAMETER
SYM.
-5
-6/-6I
-7/-7L
UNIT
NOTE
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Ref/Active to Ref/Active Command Period
tRC
54
60
65
nS
Active to precharge Command Period
tRAS
40
100000
42
100000
45
100000
Active to Read/Write Command Delay
Time
tRCD
14
18
20
Read/Write(a) to Read/Write(b) Command
Period
tCCD
1
1
1
Cycle
Precharge to Active(b) Command Period
tRP
14
18
20
nS
Active(a) to Active(b) Command Period
tRRD
10
12
14
Wreite Recovery Time
CL* = 2
tWR
7
7.5
8
CL* = 3
5
6
7
CLK Cycle Time
CL* = 2
tCK
7
1000
7.5
1000
8
1000
CL* = 3
5
1000
6
1000
7
1000
CLK High Level
tCH
2
2
2
CLK Low Level
tCL
2
2
2
Access Time from CLK
CL* = 2
tAC
5.5
5.5
6
CL* = 3
4.5
5
5.5
Output Data Hold Time
tOH
1.5
2
2
Output Data High Impedance Time
tHZ
1.5
5
2
6
2
7
Output Data Low Impedance Time
tLZ
0
0
0
Power Down Mode Entry Time
tSB
0
5
0
6
0
7
Transition Time of CLK (Rise and Fall)
tT
0.5
10
0.5
10
0.5
10
Data-in-Set-up Time
tDS
1.5.
1.5
1.5
Data-in Hold Time
tDH
1
1
1
Address Set-up Time
tAS
1.5
1.5
1.5
Address Hold Time
tAH
1
1
1
CKE Set-up Time
tCKS
1.5
1.5
1.5
CKE Hold Time
tCKH
1
1
1
Command Set-up Time
tCMS
1.5
1.5
1.5
Command Hold Time
tCMH
1
1
1
Refresh Time
tREF
64
64
64
mS
Mode Register Set Cycle Time
tRSC
10
12
14
nS
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