is43lr16800f-6bl Integrated Silicon Solution, Inc., is43lr16800f-6bl Datasheet - Page 10

• Manufacturer Part Number: is43lr16800f-6bl
• Description: 2m X 16bits X 4banks Mobile Ddr Sdram
• Manufacturer: Integrated Silicon Solution, Inc.

Rev. 00A | Dec. 2010
Figure6 : Power up sequence
A0~A9, A11
BA0, BA1
Command
DQS, DQ
1.
2.
3.
4.
Notes:
VDDQ
/CLK
VDD
CLK
CKE
A10
DM
1
PCG = PRECHARGE command, MRS = LOAD MODE REGISTER command, AREF = AUTOREFRESH command,
ACT = ACTIVE command, RA = Row address, BA = Bank address.
NOP or DESELECT commands are required for at least 200μs.
Other valid commands are possible.
NOPs or DESELECTs are required during this time.
Power-up: VDD and C LK stable
LVCMOS
HIGH LEVEL
NOP
T = 200 µs
2
tIS
NOP
T0
tIH
High -Z
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tCK
tCL
tIS
Banks
PCG
T1
All
tIH
Don ’ t care
tRP
4
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AREF
Ta0
tRFC
4
AREF
Tb0
Load Standard Mode
tRFC
4
Register
tIS
tIS
tIS
BA0=L,
CODE
CODE
BA1=L
MRS
Tc0
tIH
tIH
tIH
tMRD
4
BA0=L,
BA1=H
CODE
CODE
MRS
Td0
Load Extended Mode
IS43/46LR16800F
Advanced Information
tMRD
Register
4
ACT
Te0
RA
RA
BA
NOP
Tf0
3
10