User guide

AT28BV256
8
Notes: 1. These parameters are characterized and not 100% tested.
2. See “AC Read Characteristics” on page 5.
DATA Polling Waveforms
Notes: 1. These parameters are characterized and not 100% tested.
2. See “AC Read Characteristics” on page 5.
Toggle Bit Waveforms
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 Characteristics
(1)
Symbol Parameter Min Typ Max Units
t
DH
Data Hold Time 0 ns
t
OEH
OE Hold Time 0 ns
t
OE
OE to Output Delay
(2)
ns
t
WR
Write Recovery Time 0 ns
t
DH
t
OEH
t
OE
t
WR
Toggle Bit Characteristics
(1)
Symbol Parameter Min Typ Max Units
t
DH
Data Hold Time 10 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
t
DH
t
OE
t
WR
t
OEH