參數(shù)資料
型號: SST48CF256
廠商: Silicon Storage Technology, Inc.
英文描述: CompactFlash Card
中文描述: CF卡
文件頁數(shù): 27/60頁
文件大小: 572K
代理商: SST48CF256
Data Sheet
CompactFlash Card
SST48CF008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 / 256
27
2001 Silicon Storage Technology, Inc.
S71125-03-000
9/01
375
2.5 I/O Transfer Function
2.5.1 I/O Function
The I/O transfer to or from the CompactFlash card can be either 8 or 16 bits. When a 16-bit accessible port is
addressed, the signal -IOIS16 is asserted by the CompactFlash card. Otherwise, the -IOIS16 signal is de-asserted.
When a 16 bit transfer is attempted, and the -IOIS16 signal is not asserted by the CompactFlash card, the system
must generate a pair of 8-bit references to access the word’s Even Byte and Odd Byte. The CompactFlash card
permits both 8 and 16 bit accesses to all of its I/O addresses, so -IOIS16 is asserted for all addresses to which the
CompactFlash card responds.
TABLE
2-16: I/O F
UNCTION
Function Code
Standby Mode
Byte Input Access
(8 bits)
Byte Output Access
(8 bits)
Word Input Access
(16 bits)
Word Output Access
(16 bits)
I/O Read Inhibit
I/O Write Inhibit
High Byte Input Only
(8 bits)
High Byte Output
Only (8 bits)
-REG
X
V
IL
V
IL
V
IL
V
IL
V
IL
-CE2
V
IH
V
IH
V
IH
V
IH
V
IH
V
IL
-CE1
V
IH
V
IL
V
IL
V
IL
V
IL
V
IL
A
0
X
V
IL
V
IH
V
IL
V
IH
V
IL
-IORD
X
V
IL
V
IL
V
IH
V
IH
V
IL
-IOWR
X
V
IH
V
IH
V
IL
V
IL
V
IH
D
15
-D
8
High Z
High Z
High Z
Don’t Care
Don’t Care
Odd Byte
D
7
-D
0
High Z
Even Byte
Odd Byte
Even Byte
Odd Byte
Even Byte
V
IL
V
IL
V
IL
V
IL
V
IH
V
IL
Odd Byte
Even Byte
V
IH
V
IH
V
IL
X
X
V
IL
X
X
V
IH
X
X
X
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
Don’t Care
High Z
Odd Byte
Don’t Care
High Z
High Z
V
IL
V
IL
V
IH
X
V
IH
V
IL
Odd Byte
Don’t Care
T2-16.0 375
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參數(shù)描述
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SST49LF002A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A-33-4C-NH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
SST49LF002A-33-4C-WH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit / 3 Mbit / 4 Mbit / 8 Mbit Firmware Hub
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