RAS# VVIIHL
CAS# VVIIHL
Q
WE#
V IH
V IL
SELF REFRESH CYCLE
(Addresses and OE# = DON’T CARE)
tRP
tRAS
tRP
tRAS
tRPC
tCP
tCSR
tCHR
tRPC
tCSR
tCHR
tWRP tWRH
OPEN
tWRP tWRH
4 MEG x 4
FPM DRAM
DON’T CARE
UNDEFINED
TIMING PARAMETERS
SYMBOL
tCHD
tCP
tCSR
tRASS
tRP
-5
MIN
MAX
15
8
5
100
30
-6
MIN
MAX
15
10
5
100
40
UNITS
ns
ns
ns
µs
ns
SYMBOL
tRPC
tRPS
tWRH
tWRP
-5
MIN
5
90
8
8
MAX
-6
MIN
MAX
5
105
10
10
UNITS
ns
ns
ns
ns
NOTE: 1. Once tRASS (MIN) is met and RAS# remains LOW, the DRAM will enter self refresh mode.
2. Once tRPS is satisfied, a complete burst of all rows should be executed if RAS#-only or burst CBR refresh is used.
4 Meg x 4 FPM DRAM
D49_5V.p65 – Rev. 5/00
18
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2000, Micron Technology, Inc.