adsp-21msp58 Analog Devices, Inc., adsp-21msp58 Datasheet - Page 36

• Manufacturer Part Number: adsp-21msp58
• Description: Dsp Microcomputers
• Manufacturer: Analog Devices, Inc.

ADSP-21msp58/59
CAPACITIVE LOADING
Figures 26 and 27 show the capacitive loading characteristics of
the ADSP-21msp58/59.
Figure 26. Typical Output Rise Time vs. Load Capacitance,
C
Figure 27. Typical Output Valid Delay or Hold vs. Load
Capacitance, C
Temperature)
L
(at Maximum Ambient Operating Temperature)
NOMINAL
28
24
20
16
12
8
4
0
+14
+12
+10
+8
+6
+4
+2
–2
–4
L
25
(at Maximum Ambient Operating
25
V
DD
50
= 4.5V
50
75
C
L
75
– pF
C
L
100
– pF
100
125
125
150
150
175
175
–36–
TEST CONDITIONS
Digital
Figure 28 shows the voltage reference levels and Figure 29
shows the equivalent device loading for the ac measurements.
Analog
Figure 30 shows the analog test conditions.
Figure 28. Voltage Reference Levels for AC Measure-
ments (Except Output Enable/Disable)
Figure 29. Equivalent Device Loading for AC Measure-
ments (Including All Fixtures)
2.2k
2.2k
OUTPUT
INPUT
OUTPUT
2200pF
NPO
2200pF
NPO
Figure 30. Analog Test Conditions
PIN
1.0µF
1.0µF
TO
50pF
VIN
VIN
NORM
AUX
10µF
I
I
OL
OH
1.0µF
0.8V
0.0V
1.5V
1.5V
2.0V
3.0V
0.1µF
+1.5V
DECOUPLE
REF_CAP
REV. 0