參數(shù)資料
型號: MT46V2M32V1
廠商: Micron Technology, Inc.
英文描述: DOUBLE DATA RATE DDR SDRAM
中文描述: 雙倍數(shù)據(jù)速率的DDR SDRAM內(nèi)存
文件頁數(shù): 58/65頁
文件大小: 2360K
代理商: MT46V2M32V1
58
64Mb: x32 DDR SDRAM
2M32DDR-07.p65
Rev. 12/01
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2001, Micron Technology, Inc.
64Mb: x32
DDR SDRAM
AUTO REFRESH MODE
CK
CK#
COMMAND
1
NOP
2
VALID
VALID
NOP
2
NOP
2
PRE
CKE
RA
A0-A7, A9, A10
A8
1
BA0, BA1
1
Bank(s)
3
BA
NOTE
:
1. PRE = PRECHARGE, ACT = ACTIVE, AR = AUTO REFRESH, RA = Row Address, BA = Bank Address.
2. NOP commands are shown for ease of illustration; other valid commands may be possible at these times.
3.
Don
t Care
if A8 is HIGH at this point; A10 must be HIGH if more than one bank is active (i.e., must precharge all active banks).
4. DM, DQ, and DQS signals are all
Don
t Care
/High-Z for operations shown.
5. The second AUTO REFRESH is not required and is only shown as an example of two back-to-back AUTO REFRESH commands.
AR
NOP
2
AR
5
NOP2
ACT
NOP2
ONE BANK
ALL BANKS
t
CK
t
CH
t
CL
t
IS
t
IS
t
IH
t
IH
t
IS
t
IH
RA
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DQ
4
DM
4
DQS
4
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tRFC
5
tRP
tRFC
T0
T1
T2
T3
T4
Ta0
Tb0
Ta1
Tb1
Tb2
DON
T CARE
TIMING PARAMETERS
-5
-6
-65
SYMBOL
t
CH
t
CL
t
CK (3)
t
CK (2)
MIN
0.45
0.45
5
8
MAX
0.55
0.55
12
12
MIN
0.45
0.45
6
10
MAX
0.55
0.55
12
12
MIN
0.45
0.45
6.5
10
MAX
0.55
0.55
12
12
UNITS
t
CK
t
CK
ns
ns
-5
-6
-65
SYMBOL
t
IH
t
IS
t
RFC
t
RP
MIN
1
1
66
20
MAX
MIN
1
1
66
18
MAX
MIN
1
1
66
19.5
MAX
UNITS
ns
ns
ns
ns
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