HB28C048A6 Datasheet, PDF (14/66 Pages) Hitachi Semiconductor – FLASH ATA Card

HB28C048/032/016A6
(2) Memory address map
Task File Register Read Access Mode (2)
Mode
-REG -CE2 -CE1 A0
Standby mode
×
H
H
×
Byte access (8-bit)
H
H
L
L
H
H
L
H
Word access (16-bit) H
L
L
×
Odd byte access (8-bit) H
L
H
×
Note: ×: L or H
-OE -WE -IORD -IOWR D8 to D15 D0 to D7
×
×
×
×
High-Z High-Z
L
H
H
H
High-Z even byte
L
H
H
H
High-Z odd byte
L
H
H
H
odd byte even byte
L
H
H
H
odd byte High-Z
Task File Register Write Access Mode (2)
Mode
-REG -CE2 -CE1 A0
Standby mode
×
H
H
×
Byte access (8-bit)
H
H
L
L
H
H
L
H
Word access (16-bit) H
L
L
×
Odd byte access (8-bit) H
L
H
×
Note: ×: L or H
-OE -WE -IORD -IOWR D8 to D15 D0 to D7
×
×
×
×
Don’t care Don’t care
H
L
H
H
Don’t care even byte
H
L
H
H
Don’t care odd byte
H
L
H
H
odd byte even byte
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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