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128Mb: x4, x8, x16 SDRAM
128MSDRAM_E.p65
–
Rev. E; Pub. 1/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2001, Micron Technology, Inc.
128Mb: x4, x8, x16
SDRAM
ELECTRICAL CHARACTERISTICS AND RECOMMENDED
AC OPERATING CONDITIONS
(Notes: 5, 6, 8, 9, 11; notes appear on page 36)
AC CHARACTERISTICS
PARAMETER
Access time from CLK (pos. edge)
-7E
-75
-8E
SYMBOL
t
AC(3)
t
AC(2)
t
AH
t
AS
t
CH
t
CL
t
CK(3)
t
CK(2)
t
CKH
t
CKS
t
CMH
t
CMS
t
DH
t
DS
t
HZ(3)
t
HZ(2)
t
LZ
t
OH
t
OH
N
t
RAS
t
RC
t
RCD
t
REF
t
RFC
t
RP
t
RRD
t
T
t
WR
MIN
MAX
5.4
5.4
MIN
MAX
5.4
6
MIN
MAX
6
6
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns
–
NOTES
27
CL = 3
CL = 2
Address hold time
Address setup time
CLK high-level width
CLK low-level width
Clock cycle time
0.8
1.5
2.5
2.5
7
7.5
0.8
1.5
0.8
1.5
0.8
1.5
0.8
1.5
2.5
2.5
7.5
10
0.8
1.5
0.8
1.5
0.8
1.5
1
2
3
3
8
CL = 3
CL = 2
23
23
10
1
2
1
2
1
2
CKE hold time
CKE setup time
CS#, RAS#, CAS#, WE#, DQM hold time
CS#, RAS#, CAS#, WE#, DQM setup time
Data-in hold time
Data-in setup time
Data-out high-impedance time
CL = 3
CL = 2
5.4
5.4
5.4
6
6
6
10
10
Data-out low-impedance time
Data-out hold time (load)
Data-out hold time (no load)
ACTIVE to PRECHARGE command
ACTIVE to ACTIVE command period
ACTIVE to READ or WRITE delay
Refresh period (4,096 rows)
AUTO REFRESH period
PRECHARGE command period
ACTIVE bank
a
to ACTIVE bank
b
command
Transition time
WRITE recovery time
1
3
1
3
1
3
1.8
37
60
15
1.8
44
66
20
1.8
50
70
20
28
120,000
120,000
64
64
64
66
15
14
0.3
66
20
15
0.3
70
20
20
0.3
1.2
1.2
1.2
7
1 CLK +
7ns
14
67
1 CLK +
7.5ns
15
75
1 CLK +
7ns
15
80
24
ns
ns
25
20
Exit SELF REFRESH to ACTIVE command
t
XSR
CAPACITANCE
(Note: 2; notes appear on page 36)
PARAMETER - TSOP “TG” Package
Input Capacitance: CLK
Input Capacitance: All other input-only pins
Input/Output Capacitance: DQs
SYMBOL
C
I
1
C
I
2
C
IO
MIN
2.5
2.5
4.0
MAX
3.5
3.8
6.0
UNITS NOTES
pF
pF
pF
29
30
31
PARAMETER - FBGA “FB” Package
Input Capacitance: CLK
Input Capacitance: All other input-only pins
Input/Output Capacitance: DQs
SYMBOL
C
I
1
C
I
2
C
IO
MIN
1.5
1.5
3.0
MAX
3.5
3.8
6.0
UNITS NOTES
pF
pF
pF
34
35
36