H55S1G22MFP-60 HYNIX [Hynix Semiconductor], H55S1G22MFP-60 Datasheet - Page 28

• Manufacturer Part Number: H55S1G22MFP-60
• Description: 1Gb (32Mx32bit) Mobile SDRAM
• Manufacturer: HYNIX [Hynix Semiconductor]

DQ
CLK
Command
Command
DQ
READ
A read operation starts when a read command is input. Output buffer becomes Low-Z in the (/CAS Latency - 1)
cycle after read command set. The SDRAM can perform a burst read operation.
The burst length can be set to 1, 2, 4 and 8. The start address for a burst read is specified by the column address and
the bank select address at the read command set cycle. In a read operation, data output starts after the number of
clocks specified by the /CAS Latency. The /CAS Latency can be set to 2 or 3.
When the burst length is 1, 2, 4 and 8 the DOUT buffer automatically becomes High-Z at the next clock after the suc-
cessive burst-length data has been output.
The /CAS latency and burst length must be specified at the mode register.
Rev 1.2 / Jun. 2008
REA
REA
D
D
tCK
NOP
NOP
CL = 2
tLZ
CL = 3
tAC
NOP
NOP
Do0
Read Burst Showing CAS Latency
tOH
tLZ
tAC
NOP
Do0
Do1
tOH
1Gbit (32Mx32bit) Mobile SDR Memory
Do1
Do2
H55S1G(2/3)2MFP Series
Undefined
Do3
Do2
Do3
Don't Care
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