ADSP-21990 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADSP-21990' PDF : 50 Pages View PDF
ADSP-21990
ELECTRICAL CHARACTERISTICS—ADSP-21990BST
Parameter
Conditions
Test Conditions
Min Typ
Max
Unit
VIH
High Level Input Voltage1
@ VDDEXT = Maximum
2.0
VIH
High Level Input Voltage2
@ VDDEXT = Maximum
2.2
VIL
High Level Input Voltage1, 2
@ VDDEXT = Minimum
VOH
High Level Output Voltage3
@ VDDEXT = Minimum,
2.4
IOH = –0.5 mA
VOL
Low Level Output Voltage3
@ VDDEXT = Minimum,
IOL = 2.0 mA
IIH
High Level Input Current4
@ VDDINT = Maximum,
VIN = 3.6 V
IIH
High Level Input Current5
@ VDDINT = Maximum,
VIN = 3.6 V
IIH
High Level Input Current6
@ VDDINT = Maximum,
VIN = 3.6 V
VDDEXT
V
VDDEXT
V
0.8
V
V
0.4
V
10
μA
150
μA
10
μA
IIL
Low Level Input Current
@ VDDINT = Maximum,
VIN = 0 V
10
μA
IIL
Low Level Input Current
@ VDDINT = Maximum,
VIN = 0 V
10
μA
IIL
Low Level Input Current
@ VDDINT = Maximum,
VIN = 0 V
IOZH
Three-State Leakage Current7
@ VDDINT = Maximum,
VIN = 3.6 V
IOZL
Three-State Leakage Current7
@ VDDINT = Maximum,
VIN = 0 V
150
μA
10
μA
10
μA
CI
Input Pin Capacitance
fIN = 1 MHz
10
pF
CO
IDD-PEAK
IDD-TYP
IDD-IDLE
IDD-STOPCLK
IDD-STOPALL
IDD-PDOWN
IAVDD
IAVDD-ADCOFF
Output Pin Capacitance
Supply Current (Internal)8, 9
Supply Current (Internal)8
Supply Current (Idle)8
Supply Current (Power-Down)8, 10
Supply Current (Power-Down)8, 11
Supply Current (Power-Down)8, 12
Analog Supply Current13
Analog Supply Current12
fIN = 1 MHz
10
pF
325
375
mA
275
320
mA
250
300
mA
140
175
mA
25
55
mA
15
45
mA
55
65
mA
20
35
mA
1 Applies to all input and bidirectional pins.
2 Applies to input pins CLKIN, RESET, TRST.
3 Applies to all output and bidirectional pins.
4 Applies to all input only pins.
5 Applies to input pins with internal pull-down.
6 Applies to input pins with internal pull-up.
7 Applies to three-stateable pins.
8 The IDD supply currents are affected by the operating frequency of the device. The guaranteed numbers are based on an assumed CCLK = 160 MHz, HCLK = 80 MHz
for the ADSP-21990BST. IDD refers only to the current consumption on the internal power supply lines (VDDINT). The current consumption at the I/O on the VDDEXT
power supply is very much dependent on the particular connection of the device in the final system.
9 IDD-PEAK represents worst-case processor operation and is not sustainable under normal application conditions. Actual internal power measurements made using typical
applications are less than specified. Measured at VDDINT = maximum.
10IDLE denotes the current consumption during execution of the IDLE instruction. Measured at VDDINT = maximum.
11IDD-PDOWN represents the processor operation in full power-down mode with both core and peripheral clocks disabled. Measured at VDDINT = maximum
12IAVDD represents the power consumption of the analog system. Measured at AVDD = maximum.
13The responsibility lies with the user to ensure that the device is operated in such a manner that the maximum allowable junction temperature is not exceeded.
Rev. A | Page 21 of 50 | August 2007
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