AT29C040A_08 Datasheet, PDF (12/17 Pages) ATMEL Corporation – 4-megabit (512K x 8) 5-volt Only 256-byte Sector Flash Memory

21. Data Polling Characteristics⁽¹⁾
Symbol Parameter
t_DH
t_OEH
t_OE
t_WR
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 t_OE spec in AC Read Characteristics.
22. Data Polling Waveforms
Min
Typ
Max
Units
10
ns
10
ns
ns
0
ns
23. Toggle Bit Characteristics⁽¹⁾
Symbol Parameter
t_DH
t_OEH
t_OE
t_OEHP
t_WR
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 t_OE spec in AC Read Characteristics.
24. Toggle Bit Waveforms^(1)(2)(3)
Min
Typ
Max
Units
10
ns
10
ns
ns
150
ns
0
ns
Notes:
1. Toggling either OE or CE or both OE and CE will operate toggle bit. The t_OEHP specification must be met by the toggling
input(s).
2. Beginning and ending state of I/O6 will vary.
3. Any address location may be used but the address should not vary.
12 AT29C040A
0333L–FLASH–9/08