Rainbow Electronics AT28C256 - Manual (Page 9)

AT28C256
9
Notes: 1. These parameters are characterized and not 100% tested.
2. See “AC Read Characteristics”.
Data Polling Waveforms
Notes: 1. These parameters are characterized and not 100% tested.
2. See “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 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
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