ADSP-BF522_09 Datasheet, PDF (64/80 Pages) Analog Devices – Blackfin Embedded Processor

ADSP-BF522/523/524/525/526/527
OUTPUT DRIVE CURRENTS
Figure 42 through Figure 56 show typical current-voltage char-
acteristics for the output drivers of the ADSP-BF523/525/527
and ADSP-BF522/524/526 processors.
200
V_DDEXT = 3.6V @ – 40°C
160
V_DDEXT = 3.3V @ 25°C
120
V_DDEXT = 3.0V @ 105°C
80
V_OH
40
0
– 40
– 80
V_OL
– 120
– 160
– 200
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
Figure 42. Driver Type A Current (3.3V V_DDEXT/V_DDMEM)
160
120
80
40
0
– 40
– 80
– 120
V_DDEXT = 2.75V @ – 40°C
V_DDEXT = 2.5V @ 25°C
V_DDEXT = 2.25V @ 105°C
V_OH
V_OL
– 160
0
0.5
1.0
1.5
2.0
2.5
SOURCE VOLTAGE (V)
Figure 43. Driver Type A Current (2.5V V_DDEXT/V_DDMEM)
80
V_DDEXT = 1.9V @ – 40°C
60
V_DDEXT = 1.8V @ 25°C
V_DDEXT = 1.7V @ 105°C
40
20
V_OH
0
– 20
V_OL
– 40
– 60
– 80
0
0.5
1.0
1.5
SOURCE VOLTAGE (V)
Figure 44. Driver Type A Current (1.8V V_DDEXT/V_DDMEM)
Preliminary Technical Data
The curves represent the current drive capability of the output
drivers. See Table 10 on Page 22 for information about which
driver type corresponds to a particular ball.
240
200
160
120
80
40
0
– 40
– 80
– 120
– 160
– 200
– 240
0
V_DDEXT = 3.6V @ – 40°C
V_DDEXT = 3.3V @ 25°C
V_DDEXT = 3.0V @ 105°C
V_OH
V_OL
0.5
1.0
1.5
2.0
2.5
3.0
3.5
SOURCE VOLTAGE (V)
Figure 45. Driver Type B Current (3.3V V_DDEXT/V_DDMEM)
160
V_DDEXT = 2.75V @ – 40°C
120
V_DDEXT = 2.5V @ 25°C
80
V_DDEXT = 2.25V @ 105°C
40
V_OH
0
– 40
– 80
V_OL
– 120
– 160
– 200
0
0.5
1.0
1.5
2.0
2.5
SOURCE VOLTAGE (V)
Figure 46. Driver Type B Current (2.5V V_DDEXT/V_DDMEM)
80
V_DDEXT = 1.9V @ – 40°C
60
V_DDEXT = 1.8V @ 25°C
40
V_DDEXT = 1.7V @ 105°C
20
V_OH
0
– 20
– 40
V_OL
– 60
– 80
– 100
0
0.5
1.0
1.5
SOURCE VOLTAGE (V)
Figure 47. Driver Type B Current (1.8V V_DDEXT/V_DDMEM)
Rev. PrG | Page 64 of 80 | February 2009