參數(shù)資料
型號: V55C1256164MGLI-75H
廠商: PROMOS TECHNOLOGIES INC
元件分類: DRAM
英文描述: SYNCHRONOUS DRAM, PDSO54
封裝: 0.400 INCH, GREEN, PLASTIC, TSSOP2-54
文件頁數(shù): 7/48頁
文件大?。?/td> 634K
代理商: V55C1256164MGLI-75H
15
V55C1256164MG Rev. 1.0 September 2008
ProMOS TECHNOLOGIES
V55C1256164MG
AC Characteristics 1,2
TA = 0 to 70 °C(Commercial)/-40 to 85 °C(Industrial)/-40 to 105 °C(H grade)/-40 to 125 °C(Extended)
VSS = 0 V; VCC= 1.8 V,VCCQ = 1.8V, tT=1 ns
#
Symbol Parameter
Limit Values
Unit
Note
-75
-9
-10
Min.
Max.
Min.
Max.
Min.
Max.
Clock and Clock Enable
1tCK
Clock Cycle Time
CAS Latency = 3
CAS Latency = 2
CAS Latency = 1
7.5
10
20
9
10
20
10
12
25
ns
2fCK
Clock Frequency
CAS Latency = 3
CAS Latency = 2
CAS Latency = 1
133
100
50
111
100
50
100
83
40
MHz
3tAC
Access Time from Clock
CAS Latency = 3
CAS Latency = 2
CAS Latency = 1
_
6
9
20
_
7
9
22
_
8
10
24
ns
2, 3
4tCH
Clock High Pulse Width
3
3
3
ns
5tCL
Clock Low Pulse Width
3
3
3
ns
6tT
Transition Tim
0.3
1.2
0.5
10
0.5
10
ns
Setup and Hold Times
7tIS
Input Setup Time
2
2
2
ns
4
8tIH
Input Hold Time
1
1
1
ns
4
9tMRD
Mode Register Set to Command delay
2
2
2
CLK
10
tSB
Power Down Mode Entry Time
0
7
0
8
0
8
ns
Common Parameters
11
tRCD
Row to Column Delay Time
15
20
20
ns
5
12
tRP
Row Precharge Time
15
20
20
ns
5
13
tRAS
Row Active Time
42
100K
45
100k
50
100k
ns
5
14
tRC
Active to Active/Auto Refresh command
period
60
60
70
ns
5
15
tRRD
Activate(a) to Activate(b) Command
Period
14
16
20
ns
5
16
tCCD
CAS(a) to CAS(b) Command Period
1
1
1
CLK
Refresh Cycle
17
tREF
Refresh Period (8192 cycles)
32
32
32
ms
8
64
64
64
ms
7
18
tSREX
Self Refresh Exit Time
1
1
1
CLK
19
tRFC
Row Refresh Cycle Time
60
60
70
ns
5
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