9. AC Read Characteristics
Symbol
tACC
tCE(1)
tOE(2)
tDF(3)(4)
tOH
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE to Output Float
Output Hold
AT28HC64BF-70
Min
Max
70
70
0
35
0
35
0
AT28HC64BF-90
Min
Max
90
90
0
40
0
40
0
AT28HC64BF-120
Min
Max
120
120
0
50
0
50
0
Units
ns
ns
ns
ns
ns
10. AC Read Waveforms(1)(2)(3)(4)
ADDRESS
ADDRESS VALID
CE
OE
OUTPUT
tCE
tOE
tACC
HIGH Z
tDF
tOH
OUTPUT VALID
Notes:
1. CE may be delayed up to tACC - tCE after the address transition without impact on tACC.
2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change
without impact on tACC.
3. tDF is specified from OE or CE whichever occurs first (CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
6 AT28HC64BF
3648A–PEEPR–10/06