AT49F512(1999) データシートの表示（PDF） - Atmel Corporation
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AT49F512 Datasheet PDF : 12 Pages
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Data Polling Characteristics(1)
Symbol
Parameter
tDH
tOEH
tOE
tWR
Notes:
Data Hold Time
OE Hold Time
OE to Output Delay (2)
Write Recovery Time
1. These parameters are characterized and not 100% tested.
2. See tOE spec in AC Read Characteristics.
Data Polling Waveforms
WE
CE
OE
tDH
I/O7
tOEH
tOE
HIGH Z
A0-A15
An
An
An
Toggle Bit Characteristics(1)
Symbol
Parameter
tDH
tOEH
tOE
tOEHP
tWR
Notes:
Data Hold Time
OE Hold Time
OE to Output Delay(2)
OE High Pulse
Write Recovery Time
1. These parameters are characterized and not 100% tested.
2. See tOE spec in AC Read Characteristics.
Toggle Bit Waveforms(1)(2)(3)
Min
Typ
Max
10
10
0
tWR
An
An
Min
Typ
Max
10
10
150
0
Units
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
Notes: 1. Toggling either OE or CE or both OE and CE will operate toggle bit. The tOEHP specification must be met by the toggling
input(s)
2. Begining and ending state of I/O6 will vary.
3. Any address location may be used but the address should not vary.
8
AT49F512
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