adsp-bf538f Analog Devices, Inc., adsp-bf538f Datasheet - Page 46

• Manufacturer Part Number: adsp-bf538f
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices, Inc.

ADSP-BF538/ADSP-BF538F
OUTPUT DRIVE CURRENTS
Figure 29
voltage characteristics for the output drivers of the ADSP-
BF538/ADSP-BF538F processors. The curves represent the cur-
rent drive capability of the output drivers as a function of output
voltage.
-
-
-
120
100
100
-
-
-
-
150
100
100
150
-
80
60
40
20
20
40
60
80
50
50
0
0
0
0
through
0.5
Figure 30. Drive Current A (High V
Figure 29. Drive Current A (Low V
0.5
Figure 36 on Page 47
1.0
1.0
1.5
SOURCE VOL TAGE (V)
SOURCE VOLTAGE (V)
1.5
2.0
show typical current-
2.5
DDEXT
DDEXT
2.0
V
V
V
D D EX T
D D EX T
D D EX T
)
)
V
V
V
V
DD E XT
DD E XT
D D EX T
3. 0
V
OL
Rev. A | Page 46 of 56 | January 2008
OH
= 2.25V
= 2.50V
= 2.75V
V
= 3.0V
= 3.3V
2.5
= 3. 6V
OL
3.5
V
O H
3. 0
4.0
-
-
-
-
-
200
150
100
100
150
200
150
100
100
150
-
-
-
-
-
50
50
50
50
80
60
40
20
20
40
60
0
0
0
0
0
0
0.5
Figure 32. Drive Current B (High V
Figure 31. Drive Current B (Low V
Figure 33. Drive Current C (Low V
0.5
0.5
1.0
1. 0
1. 0
1.5
SOURCE VOLTAGE (V)
SOURCE VOLTAGE (V)
SOURCE VOLTAGE (V)
2.0
1.5
1.5
2.5
DDEXT
DDEXT
DDEXT
V
V
V
V
V
V
2.0
2.0
DD E XT
DD E XT
DD E XT
DD E XT
DD E XT
DD E XT
V
V
V
)
)
D D E XT
D D E XT
)
D DE XT
3. 0
= 2.25V
= 2.50V
= 2.75V
= 2.25V
= 2.50V
= 2.75V
= 3.0V
= 3.3V
= 3.6V
V
2.5
O H
2.5
3.5
V
V
V
V
OL
OH
OH
OL
V
OL
4.0
3.0
3.0