is43r16160 Integrated Silicon Solution, Inc., is43r16160 Datasheet - Page 33

• Manufacturer Part Number: is43r16160
• Description: 32mx8, 16mx16 256mb Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

DDR SDRAM (Rev.1.1)
IS43R16160
Integrated Silicon Solution, Inc.
Rev. 00A
09/10/08
[Initialize and Mode Register sets]
[AUTO REFRESH]
Command
command. The refresh address is generated internally. 8192 REFA cycles within 64ms refresh
256Mbits memory cells. The auto-refresh is performed on 4 banks 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.
Single cycle of auto-refresh is initiated with a REFA(/CS=/RAS=/CAS=L,/WE=CKE=H)
A0-12
BA0,1
/CLK
DQS
CKE
CLK
BA0,1
A0-12
A10
DQ
/RAS
/CAS
/CLK
CKE
CLK
/WE
/CS
Auto Refresh on All Banks
NOP
Preliminary
Preliminary
PRE
1
Extended Mode
Register Set
EMRS
Code
Code
1 0
tMRD
NOP or DESELECT
Auto-Refresh
tRFC
Initialize and MRS
Mode Register Set,
MRS
Code
Code
0 0
Reset DLL
tMRD
256M Double Data Rate Synchronous DRAM
PRE
1
Auto Refresh on All Banks
tRP
AR
tRFC
A3S56D30/40ETP
AR
tRFC
MRS
Code
0 0
tMRD
ACT
Xa
Xa
Xa
33