ADSP-BF537 AD [Analog Devices], ADSP-BF537 Datasheet - Page 55

• Manufacturer Part Number: ADSP-BF537
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

Capacitive Loading
Output delays and holds are based on standard capacitive loads:
30 pF on all pins (see
Page 57
delay and hold specifications given should be derated by a factor
derived from these figures. The graphs in these figures may not
be linear outside the ranges shown.
Figure 51. Typical Output Delay or Hold for Driver A at V
Figure 50. Typical Output Delay or Hold for Driver A at V
14
12
10
12
10
8
6
4
2
0
8
6
4
2
0
0
0
show how output rise time varies with capacitance. The
ABE0 (133 MHz DRIVER), V
ABE0 (133 MHz DRIVER), V
50
50
Figure
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
48).
DDEXT
100
100
DDEXT
RISE TIME
Figure 50
RISE TIME
(MIN) = 2.25V, TEMPERATURE = 85°C
(MAX) = 3.65V, TEMPERATURE = 85°C
150
150
through
FALL TIME
FALL TIME
200
200
Figure 59 on
DDEXT
DDEXT
Rev. B | Page 55 of 68 | July 2006
Max
Min
250
250
ADSP-BF534/ADSP-BF536/ADSP-BF537
Figure 53. Typical Output Delay or Hold for Driver B at V
Figure 52. Typical Output Delay or Hold for Driver B at V
10
12
10
9
8
7
6
5
4
3
2
1
0
8
6
4
2
0
0
0
CLKOUT (CLKOUT DRIVER), V
CLKOUT (CLKOUT DRIVER), V
50
50
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
100
100
DDEXT
RISE TIME
DDEXT
RISE TIME
(MAX) = 3.65V, TEMPERATURE = 85°C
(MIN) = 2.25V, TEMPERATURE = 85 ° C
150
150
FALL TIME
FALL TIME
200
200
DDEXT
DDEXT
Max
Min
250
250