Datasheet

6
0014O–EPROM–10/11
Atmel AT27C256R
Figure 5-3. Output test load
Note: 1. C
L
= 100pF including jig capacitance, except for the -45 devices, where C
L
= 30pF.
Table 5-5. Pin capacitance
Note: 1. Typical values for nominal supply voltage. This parameter is only sampled, and is not 100% tested.
Figure 5-4. Programming Waveforms
(1)
Notes: 1. The input timing reference is 0.8V for V
IL
and 2.0V for V
IH
.
2. t
OE
and t
DFP
are characteristics of the device, but must be accommodated by the programmer.
3. When programming the Atmel AT27C256R, a 0.1µF capacitor is required across V
PP
and ground to suppress spurious volt-
age transients.
f = 1MHz, T = 25°C
(1)
Symbol Typ Max Units Conditions
C
IN
4 6 pF V
IN
= 0V
C
OUT
812pFV
OUT
= 0V