
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
f = 1MHz, T = 25°C (1)
Symbol
C IN
C OUT
Typ
4
8
Max
6
12
Units
pF
pF
Conditions
V IN = 0V
V OUT = 0V
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.
6
Atmel AT27C256R
0014O–EPROM–10/11