參數(shù)資料
型號(hào): MT48LC4M32B2
廠商: Micron Technology, Inc.
英文描述: SYNCHRONOUS DRAM
中文描述: 同步DRAM
文件頁(yè)數(shù): 43/52頁(yè)
文件大小: 1281K
代理商: MT48LC4M32B2
43
128Mb: x32 SDRAM
128MbSDRAMx32_D.p65 – Rev. D; Pub. 6/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2002, Micron Technology, Inc.
128Mb: x32
SDRAM
ALTERNATING BANK READ ACCESSES
1
NOTE:
1. For this example, the burst length = 4, and the CAS latency = 2.
2. A8, A9, and A11 = “Don’t Care.”
*CAS latency indicated in parentheses.
-6
-7
SYMBOL*
t
CKS
t
CMH
t
CMS
t
LZ
t
OH
t
RAS
t
RC
t
RCD
t
RP
t
RRD
MIN
1.5
1
1.5
1
2
42
60
18
18
12
MAX
MIN
2
1
2
1
2.5
42
70
20
20
14
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
120,000
120,000
TIMING PARAMETERS
-6
-7
SYMBOL*
t
AC (3)
t
AC (2)
t
AC (1)
t
AH
t
AS
t
CH
t
CL
t
CK (3)
t
CK (2)
t
CK (1)
t
CKH
MIN
MAX
5.5
7.5
17
MIN
MAX
5.5
8
17
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1
1
2
1.5
2.5
2.5
6
10
20
1
2.75
2.75
7
10
20
1
DON’T CARE
UNDEFINED
ENABLE AUTO PRECHARGE
tCH
tCL
tCK
tAC
tLZ
CLK
DQ
A10
tOH
D
OUT
m
tCMH
tCMS
tAH
tAS
tAH
tAS
tAH
tAS
ROW
ROW
ROW
ROW
tOH
D
OUT
m
+ 3
tAC
tOH
tAC
tOH
tAC
D
OUT
m
+ 2
D
OUT
m
+ 1
COMMAND
tCMH
tCMS
NOP
NOP
ACTIVE
NOP
READ
NOP
ACTIVE
tOH
D
OUT
b
tAC
tAC
READ
ENABLE AUTO PRECHARGE
ROW
ACTIVE
ROW
BANK 0
BANK 0
BANK 4
BANK 4
BANK 0
CKE
tCKH
tCKS
COLUMN
m
2
COLUMN
b
2
T0
T1
T2
T4
T3
T5
T6
T7
T8
tRP - BANK 0
tRAS - BANK 0
t
RC - BANK 0
tRCD - BANK 0
tRCD - BANK 0
CAS Latency - BANK 0
tRCD - BANK 4
CAS Latency - BANK 4
t
RRD
BA0, BA1
DQM 0-3
A0-A9, A11
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