MT48LC64M4A2 Micron Technology, MT48LC64M4A2 Datasheet - Page 37

• Manufacturer Part Number: MT48LC64M4A2
• Description: (MT48Lxxxx) SYNCHRONOUS DRAM
• Manufacturer: Micron Technology

CAPACITANCE
(Note: 2; notes appear on page 37)
ELECTRICAL CHARACTERISTICS AND RECOMMENDED
AC OPERATING CONDITIONS
(Notes: 5, 6, 8, 9, 11; notes appear on page 37)
256Mb: x4, x8, x16 SDRAM
256MSDRAM_E.p65 – Rev. E; Pub. 3/02
AC CHARACTERISTICS
PARAMETER
Access time from
CLK (pos. edge)
Address hold time
Address setup time
CLK high-level width
CLK low-level width
Clock cycle time
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
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 (8,192 rows)
AUTO REFRESH period
PRECHARGE command period
ACTIVE bank a to ACTIVE bank b command
Transition time
WRITE recovery time
Exit SELF REFRESH to ACTIVE command
PARAMETER - TSOP “TG” Package
Input Capacitance: CLK
Input Capacitance: All other input-only pins
Input/Output Capacitance: DQs
PARAMETER - FBGA “FB” and “FG” Package
Input Capacitance: CLK
Input Capacitance: All other input-only pins
Input/Output Capacitance: DQs
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
37
SYMBOL
t
t
t
t
t
t
t
t
t
t
AC(3)
AC(2)
CK(3)
CK(2)
t
HZ(3)
HZ(2)
t
t
t
t
t
t
CMH
t
t
CMS
t
t
OH
t
t
CKH
t
RCD
RRD
t
CKS
t
RAS
t
REF
RFC
t
XSR
WR
AH
DH
OH
CH
AS
CL
DS
RC
RP
t
LZ
T
N
1 CLK+
SYMBOL
SYMBOL
MIN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
7ns
0.8
1.5
2.5
2.5
7.5
0.8
1.5
0.8
1.5
0.8
1.5
1.8
0.3
37
60
15
66
15
14
14
67
7
1
3
C
C
C
C
C
C
IO
IO
I
I
I
I
-7E
1
2
1
2
120,000
MAX
5.4
5.4
5.4
5.4
1.2
64
256Mb: x4, x8, x16
MIN
MIN
2.5
2.5
4.0
1.5
1.5
3.0
1 CLK+
7.5ns
MIN
0.8
1.5
2.5
2.5
7.5
0.8
1.5
0.8
1.5
0.8
1.5
1.8
0.3
10
44
66
20
66
20
15
15
75
1
3
-75
MAX
MAX
120,000
3.5
3.8
6.0
3.5
3.8
6.0
MAX
5.4
5.4
1.2
64
6
6
UNITS NOTES
UNITS NOTES
©2002, Micron Technology, Inc.
UNITS
SDRAM
p F
p F
pF
pF
pF
pF
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
29
30
31
34
35
36
27
23
23
10
10
28
24
25
20
7