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參數(shù)資料
| 型號： | K1B6416B6C |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 4Mx16 bit Synchronous Burst Uni-Transistor Random Access Memory |
| 中文描述： | 4Mx16位同步突發(fā)統(tǒng)一晶體管隨機存取存儲器 |
| 文件頁數(shù)： | 14/46頁 |
| 文件大小： | 768K |
| 代理商： | K1B6416B6C |
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Revision 1.0
January 2005
K1B6416B6C
- 14 -
U
t
RAM
Address
Data out
ADV
Clock
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
Data out
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
Data out
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
Data out
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
Latency 3
Latency 4
Latency 5
Latency 6
T
SYNCHRONOUS BURST OPERATION TERMINOLOGY
Clock(CLK)
The clock input is used as the reference for synchronous burst read and write operation of UtRAM. The synchronous burst read and
write operation is synchronized to the rising edge of the clock. The clock transitions must swing between V
IL
and V
IH
.
Latency Count
The Latency Count configuration tells the device how many clocks must elapse from the burst command before the first data should
be available on its data pins. This value depends on the input clock frequency.
The supported Latency Count is as follows.
Table 9. Latency Count support : 3, 4, 5
Table 10. Number of Clocks for 1st Data
Fig.10 Latency Configuration(Read)
NOTE : The first data will always keep the Latency. From the second data, some period of wait time might be caused by WAIT pin.
Burst Length
Burst Length identifies how many data the device outputs at an access. The device supports 4 word, 8 word, 16 word and 256 word
burst read or write. 256 word Full page burst mode needs to meet tBC(Burst Cycle time) parameter as max. 2500ns.
The first data will be out with the set Latency + tCD. From the second data, the data will be out with tCD from each clock.
Burst Stop
Burst stop is used when the system wants to stop burst operation on special purpose. If driving CS to V
IH
during the burst read opera-
tion, then the burst operation will be stopped. During the burst read operation, the new burst operation can not be issued. The new
burst operation can be issued only after the previous burst operation is finished.
The burst stop feature is very useful because it enables the user to utilize the un-supported burst length such as 1 burst or 2 burst
which accounts for big portion in usage for the mobile handset application environment.
Clock Frequency
Upto 66MHz
Upto 54MHz
Upto 40MHz
Latency Count
5
4
3
Set Latency
Latency 3
Latency 4
Latency 5
# of Clocks for 1st data(Read)
4
5
6
# of Clocks for 1st data(Write)
2
3
4
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