SMC256BFJ6E Micron Technology Inc, SMC256BFJ6E Datasheet - Page 38

• Manufacturer Part Number: SMC256BFJ6E
• Manufacturer: Micron Technology Inc

Specifications of SMC256BFJ6E

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Card configuration
6.6
38/90
I/O transfer function
The I/O transfer to or from the card can be either 8 or 16 bits. When a 16-bit accessible
port is addressed, the
When a 16-bit transfer is attempted, and the
generate a pair of 8-bit references to access the word’s even and odd bytes. The card
permits both 8 and 16 bit accesses to all of its I/O addresses, so
addresses (see
Table 33.
High byte output only
.
Word output access
High byte input only
Byte output access
Word input access
Byte input access
Function code
I/O write inhibit
Standby mode
I/O read inhibit
(16 bits)
(16 bits)
(8 bits)
(8 bits)
(8 bits)
(8 bits)
I/O function
Table
–REG –CE2
33).
–
X
H
H
L
L
L
L
L
L
L
L
IOIS16 signal is asserted by the card, otherwise it is de-asserted.
H
H
H
H
H
X
L
L
X
L
L
–CE1 A0 –IORD
H
H
H
X
X
L
L
L
L
L
L
H
H
X
X
X
X
X
L
L
L
L
–
IOIS16 signal is not asserted, the system must
H
H
H
H
H
X
L
L
L
L
L
–IOWR
H
H
H
H
H
X
L
L
L
L
L
–
D15 to D8
IOIS16 is asserted for all
Don’t care
Don’t care
Don’t care
Odd byte
Odd byte
Odd byte
Odd byte
High Z
High Z
High Z
High Z
Don’t care
Don’t care
Even byte
Even byte
Even byte
Even byte
SMCxxxBF
D7 to D0
Odd byte
Odd byte
High Z
High Z
High Z