Toggle bit characteristics, Data polling characteristics, Toggle bit waveforms – Rainbow Electronics AT29C257 User Manual
Page 9: Data polling waveforms
Toggle Bit Characteristics
(1)
Symbol
Parameter
Min
Typ
Max
Units
t
DH
Data Hold Time
0
ns
t
OEH
OE Hold Time
10
ns
t
OE
OE to Output Delay
(2)
ns
t
OEHP
OE High Pulse
150
ns
t
WR
Write Recovery Time
0
ns
Notes: 1. These parameters are characterized and not 100% tested.
2. See t
OE
spec in AC Read Characteristics.
Data Polling Characteristics
(1)
Symbol
Parameter
Min
Typ
Max
Units
t
DH
Data Hold Time
0
ns
t
OEH
OE Hold Time
10
ns
t
OE
OE to Output Delay
(2)
ns
t
WR
Write Recovery Time
0
ns
Notes: 1. These parameters are characterized and not 100% tested.
2. See t
OE
spec in AC Read Characteristics.
Toggle Bit Waveforms
(1, 2, 3)
Notes: 1. Toggling either OE or CE or both OE and CE will
operate toggle bit.
2. Beginning and ending state of I/O6 will vary.
3. Any address location may be used but the address
should not vary.
Data Polling Waveforms
AT29C257
4-113