ID246 Datasheet, PDF (10/38 Pages) Sharp Electrionic Components – Flash Memory Card

SHARP
ID246 SERIES PRODUCT OVERVIBW
6.3 Function Table
6.3.1 Common Memory Access
Table 4. Common Memory tcess
Mode
Stand-by
Byte Read
Word Read
Odd Byte Read
Byte Write
Word Write
Odd Byte write
H
H
L
H
H
L Don’t care
Odd
H
L
L
X
H
L
Odd
Even
H
L
H
X
H
L
Odd
Don’t care
6.3.2 Attribute Memory Access
Table 5. Attribute Memory Access
Mode
REG# CE,# CE,# A,
Stand-by
X
H
H
X
Byte Read
L
H
L
L
L
H
L
H
Word Read
L
L
L
X
Odd Byte Read
L
L
H
X
Byte Write
L
H
L
L
L
H
L
H
Word Write
L
L
L
X
Odd Byte write
L
L
H
X
OE# WE#
X
X
D,,,
High-Z
D _7-o
High-Z
L
H
High-Z
Even
L
H
High-Z
xx
L
H
xx
Even
L
H
xx
High-Z
H
L Don’t care
Even
H
L Don’t care Don’t care
H
L Don’t care
Even
H
L Don’t care Don’t care
TS1059E-02
XX:Output data is invalid.
The standard CIS is for read only. Write operation is only for CMRs and CIS on EEPROM
7. Card Information Structure (CIS)
The CIS is contained within attribute memory (Please refer to section 6.2). Table 6 shows standard CIS tuples, but
it is for read only. As an enhanced function, the hardwired CIS area is switchable to EEPROM so that customer
can program required CIS. Please contact our sales & marketing support to find concrete way of setting.