AT5FC512-20 データシートの表示（PDF） - Atmel Corporation
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AT5FC512-20 Datasheet PDF : 15 Pages
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AT5FC512
Common Memory Operations
X = Don’t Care, where Don’t Care is either VIL or VIH levels.
Pins
REG CE2 CE1 OE WE A0 D8-D15
D0-D7
Read-Only
Read (x8) (1)
Read (x8) (2)
Read (x8) (3)
Read (x16) (4)
VIH
VIH
VIL
VIL
VIH
VIL High Z
VIH
VIH
VIL
VIL
VIH
VIH High Z
VIH
VIL
VIH
VIL
VIH
X Data Out-Odd
VIH
VIL
VIL
VIL
VIH
X Data Out-Odd
Output Disable VIH
X
X
VIH
VIH
X High Z
Standby
X
VIH
VIH
X
X
X High Z
Data Out-Even
Data Out-Odd
High Z
Data Out-Even
High Z
High Z
Write-Only
Write (x8) (1)
Write (x8) (2)
Write (x8) (3)
VIH
VIH
VIL
VIH
VIL
VIL High Z
VIH
VIH
VIL
VIH
VIL
VIH High Z
VIH
VIL
VIH
VIH
VIL
X Data In-Odd
Write (x16) (4)
VIH
VIL
VIL
VIH
VIL
X Data In-Odd
Output Disable VIH
X
X
VIH
VIL
X High Z
Data In-Even
Data In-Odd
High Z
Data In-Even
High Z
Notes:
1. Byte access - Even. In this x8 mode, D0-D7 contain the
"even" byte (low byte) of the x16 word. D8-D15 are inactive.
2. Byte access - Odd. In this x8 mode, D0-D7 contain the "odd"
byte (high byte) of the x16 word. This is accomplished inter-
nal to the card by transposing D8-D15 to D0-D7. D8-D15
are inactive.
Memory Card Program Routine
Byte Mode
3. Odd byte only access. In this x8 mode, D8-D15 contain the
"odd" byte (high byte) of the x16 word. D0-D7 are inactive.
A0 = X.
4. Word access. In this mode D0-D7 contain the "even" byte
while D8-D15 contain the "odd" byte. A0 = X
Memory Card Program Routine
Word Mode
7
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