ADSP-2189MBSTZ-266 Analog Devices Inc, ADSP-2189MBSTZ-266 Datasheet - Page 18

• Manufacturer Part Number: ADSP-2189MBSTZ-266
• Description: IC,DSP,16-BIT,CMOS,QFP,100PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2189MBSTZ-266

• Interface: Host Interface, Serial Port
• Clock Rate: 66MHz
• Non-volatile Memory: External
• On-chip Ram: 192kB
• Voltage - I/o: 3.30V
• Voltage - Core: 2.50V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Device Core Size: 16b
• Format: Fixed Point
• Clock Freq (max): 66MHz
• Mips: 66
• Device Input Clock Speed: 66MHz
• Ram Size: 192KB
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (min): 2.25V
• Operating Supply Voltage (max): 2.75/3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADSP-2189MBSTZ266

ADSP-2189M
TEST CONDITIONS
Output Disable Time
Output pins are considered to be disabled when they have
stopped driving and started a transition from the measured
output high or low voltage to a high impedance state. The out-
put disable time (t
as shown in the Output Enable/Disable diagram. The time is the
interval from when a reference signal reaches a high or low
voltage level to when the output voltages have changed by 0.5 V
from the measured output high or low voltage.
The decay time, t
C
proximated by the following equation:
from which
is calculated. If multiple pins (such as the data bus) are disabled,
the measurement value is that of the last pin to stop driving.
Figure 19. Voltage Reference Levels for AC Measurements
(Except Output Enable/Disable)
Output Enable Time
Output pins are considered to be enabled when they have made
a transition from a high impedance state to when they start
L
, and the current load, i
OUTPUT
INPUT
DECAY
DIS
t
DIS
) is the difference of t
t
DECAY
, is dependent on the capacitive load,
= t
L
MEASURED
, on the output pin. It can be ap-
=
C
L
× 0 5 .
i
– t
L
DECAY
V
MEASURED
0.8V
1.5V
1.5V
2.0V
and t
DECAY
,
–18–
driving. The output enable time (t
a reference signal reaches a high or low voltage level to when the
output has reached a specified high or low trip point, as shown
in the Output Enable/Disable diagram. If multiple pins (such as
the data bus) are enabled, the measurement value is that of the
first pin to start driving.
Figure 21. Equivalent Device Loading for AC Measure-
ments (Including All Fixtures)
REFERENCE
OUTPUT
(MEASURED)
(MEASURED)
SIGNAL
V
V
OUTPUT
OH
OL
OUTPUT STOPS
Figure 20. Output Enable/Disable
PIN
TO
t
t
MEASURED
DIS
DRIVING
50pF
HIGH-IMPEDANCE STATE. TEST CONDITIONS CAUSE
THIS VOLTAGE LEVEL TO BE APPROXIMATELY 1.5V.
V
V
OH
OL
t
DECAY
(MEASURED) +0.5V
(MEASURED) – 0.5V
ENA
I
I
OL
OH
) is the interval from when
1.0V
2.0V
OUTPUT
DRIVING
STARTS
t
ENA
+1.5V
V
(MEASURED)
V
(MEASURED)
OH
OL
REV. A