Datasheet

6
Atmel AT27C040 [DATASHEET]
0189J–EPROM–10/2012
Figure 6-4. 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 AT27C040, a 0.1μF capacitor is required across V
PP
and ground to suppress
spurious voltage transients.
Table 6-3. DC Programming Characteristics
T
A
= 25 ± 5°C, V
CC
= 6.5 ± 0.25V, V
PP
= 13.0 ± 0.25V.
Symbol Parameter Test Conditions
Limits
UnitsMin Max
I
LI
Input Load Current V
IN
= V
IL
, V
IH
10 μA
V
IL
Input Low Level -0.6 0.8 V
V
IH
Input High Level 2.0 V
CC
+ 0.7 V
V
OL
Output Low Voltage I
OL
= 2.1mA 0.4 V
V
OH
Output High Voltage I
OH
= -400μA 2.4 V
I
CC2
V
CC
Supply Current (Program And Verify) 40 mA
I
PP2
V
PP
Supply Current CE = V
IL
20 mA
V
ID
A
9
Product Identification Voltage 11.5 12.5 V
t
AS
t
DS
t
OES
V
IH
V
IL
V
IH
V
IL
13.0V
5.0V
6.5V
5.0V
V
IH
V
IL
V
IH
V
IL
A
ddress
Data
V
PP
V
CC
CE
OE
Program
Address Stable
Read
(Verify)
Data In
Data Out
Valid
t
PRT
t
VPS
t
PW
t
OE
t
DH
t
DFP
t
AH
t
VCS