參數(shù)資料
型號(hào)： K9S6408V0B
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： SmartMedia CARD
中文描述： SmartMedia卡
文件頁(yè)數(shù)： 27/31頁(yè)
文件大?。?/td> 481K
代理商： K9S6408V0B
K9S2808V0C/B
27
SmartMedia
TM
K9S5608V0C/B
K9S6408V0C/B
Figure 12. Block Erase Operation
BLOCK ERASE
The Erase operation is done on a block(16K Byte) basis. Block address loading is accomplished in two cycles initiated by an Erase
Setup command(60h). Only address A
14
to (A
22
: K9S6408V0X, A
23
: K9S2808V0X, A
24
: K9S5608V0X
)
is valid while A
9
to A
13
is
ignored. The Erase Confirm command(D0h) following the block address loading initiates the internal erasing process. This two-step
sequence of setup followed by execution command ensures that memory contents are not accidentally erased due to external noise
conditions.
At the rising edge of WE after the erase confirm command input, the internal write controller handles erase and erase-verify. When
the erase operation is completed, the Write Status Bit(I/O 0) may be checked. Figure 12 details the sequence.
60h
Block Add. : A
9
~ A
24
I/O
0
~
7
R/B
Address Input(2Cycle)
I/O
0
Pass
D0h
70h
Fail
t
BERS
READ STATUS
The device contains a Status Register which may be read to find out whether program or erase operation is completed, and whether
the program or erase operation is completed successfully. After writing 70h command to the command register, a read cycle outputs
the content of the Status Register to the I/O pins on the falling edge of CE or RE, whichever occurs last. This two line control allows
the system to poll the progress of each device in multiple memory connections even when R/B pins are common-wired. RE or CE
does not need to be toggled for updated status. Refer to Table3 for specific Status Register definitions. The command register
remains in Status Read mode until further commands are issued to it. Therefore, if the status register is read during a random read
mode, a read command(00h or 50h) should be given before the sequential read cycle.
Read Status Register Definition
I/O #
Status
Definition
I/O 0
Program / Erase
"0" : Successful Program / Erase
"1" : Error in Program / Erase
I/O 1
Reserved for Future
Use
"0"
I/O 2
"0"
I/O 3
"0"
I/O 4
"0"
I/O 5
"0"
I/O 6
Device Operation
"0" : Busy "1" : Ready
I/O 7
Write Protect
"0" : Protected "1" : Not Protected
A
22
: K9S6408V0X
A
23
: K9S2808V0X
A
24
: K9S5608V0X
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