ADSP-BF531WBBCZ-4A AD [Analog Devices], ADSP-BF531WBBCZ-4A Datasheet - Page 48

• Manufacturer Part Number: ADSP-BF531WBBCZ-4A
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

ADSP-BF531/ADSP-BF532
Figure 51. Typical Rise and Fall Times (10% to 90%) versus Load Capacitance
Figure 52. Typical Rise and Fall Times (10% to 90%) versus Load Capacitance
Figure 53. Typical Rise and Fall Times (10% to 90%) versus Load Capacitance
20
18
16
14
12
10
18
16
14
12
10
8
6
4
2
0
8
6
4
2
0
18
16
14
12
10
0
0
8
6
4
2
0
0
TMR0 (33MHz DRIVER), V
50
50
50
SCK (66MHz DRIVER), V
SCK (66MHz DRIVER), V
for Driver C at V
for Driver D at V
for Driver D at V
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
100
100
100
RISE TIME
RISE TIME
RISE TIME
DDEXT
DDEXT
DDEXT
DDEXT
DDEXT
DDEXT
(MAX) = 3.65V
150
= 3.65 V
150
= 2.25 V
150
= 1.8 V
(MIN) = 2.25V
FALL TIME
FALL TIME
= 1.7V
FALL TIME
200
200
200
Rev. D | Page 48 of 60 | August 2006
250
250
250
Figure 54. Typical Rise and Fall Times (10% to 90%) versus Load Capacitance
ENVIRONMENTAL CONDITIONS
To determine the junction temperature on the application
printed circuit board use:
where:
T
T
center of package.
P
the method to calculate P
Values of
circuit board design considerations.
order approximation of T
where:
T
In
with JEDEC standards JESD51–2 and JESD51–6, and the junc-
tion-to-board measurement complies with JESD51–8. The
junction-to-case measurement complies with MIL-STD-883
(Method 1012.1). All measurements use a 2S2P JEDEC test
board.
T
D
J
CASE
A
J
JT
= junction temperature ( C).
Table 30
= power dissipation (see
= ambient temperature ( C).
14
12
10
=
= from
8
6
4
2
0
0
= case temperature ( C) measured by customer at top
T
A
+
JA
Table 30
through
are provided for package comparison and printed
JA
SCK (66MHz DRIVER), V
50
P
T
D
for Driver D at V
Table
through
J
LOAD CAPACITANCE (pF)
=
T
D
J
100
).
by the equation:
32, airflow measurements comply
CASE
Power Dissipation on Page 45
RISE TIME
Table
+
DDEXT
DDEXT
32.
(MAX) = 3.65V
JT
= 3.65 V
150
JA
FALL TIME
can be used for a first
P
D
200
for
250