is42s16160a1-7t Integrated Silicon Solution, Inc., is42s16160a1-7t Datasheet - Page 25

• Manufacturer Part Number: is42s16160a1-7t
• Description: 256 Mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S83200A1
IS42S16160A1
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. B
10/28/05
AUTO REFRESH
Single cycle of auto-refresh is initiated with a REFA
(/CS= /RAS= /CAS= L, /WE= /CKE= H) command.
The refresh address is generated internally. 8192
REFA cycles within 64ms refresh 256M bit memory
cells. The auto-refresh is performed on 4 banks
A 0-12
B A0-1
/RAS
/CAS
CKE
CLK
/CS
/WE
Auto Refresh on All Banks
(4-bank x 8,388,608 - word x 8-bit)
(4-bank x 4,194,304 - word x 16-bit)
NOP or DESELECT
minimum tRFC
Auto-Refresh
concurrently. Before performing an auto-refresh, all
banks must be in the idle state. Auto-refresh to auto-
refresh interval is minimum tRFC. Any command must
not be supplied to the device before tRFC from the
REFA command.
Auto Refresh on All Banks
ISSI
25
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