Rainbow Electronics AT29C257 - Manual (Page 9)

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