參數(shù)資料
型號(hào): 7P640ATA2503C25
英文描述: Flash Memory Card(640M位閃速存儲(chǔ)器卡)
中文描述: 閃存卡(640M的位閃速存儲(chǔ)器卡)
文件頁數(shù): 10/62頁
文件大?。?/td> 626K
代理商: 7P640ATA2503C25
7PxxxATA25xxC25
June 2000 Rev. 1 – ECO #12936
10
White Electronic Designs Corporation
(508) 366-5151
(2) Memory address map
Task File Register Read Access Mode (2)
Mode
-REG
-CE2
-CE1
A0
-OE
-WE
-IORD -IOWR D8 to D15 D0 to D7
Standby mode
×
H
H
×
×
×
×
×
High-Z
High-Z
Byte access (8-bit)
H
H
L
L
L
H
H
H
High-Z
even byte
H
H
L
H
L
H
H
H
High-Z
odd byte
Word access (16-bit)
H
L
L
×
×
L
H
H
H
odd byte
even byte
Odd byte access (8-bit)
Note:
×
: L or H
H
L
H
L
H
H
H
odd byte
High-Z
Task File Register Write Access Mode (2)
Mode
-REG
-CE2
-CE1
A0
-OE
-WE
-IORD -IOWR D8 to D15 D0 to D7
Standby mode
×
H
H
×
×
×
×
×
Don’t care Don’t care
Byte access (8-bit)
H
H
L
L
H
L
H
H
Don’t care even byte
H
H
L
H
H
L
H
H
Don’t care odd byte
Word access (16-bit)
H
L
L
×
×
H
L
H
H
odd byte
even byte
Odd byte access (8-bit)
Note:
×
: L or H
H
L
H
H
L
H
H
odd byte
Don’t care
Task File Register Access Timing Example (2)
A0 to A10
-REG
-CE2/-CE1
-OE
-WE
D0 to D15
Dout
read cycle
Din
write cycle
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