ADSP-21990BST Analog Devices Inc, ADSP-21990BST Datasheet - Page 19

• Manufacturer Part Number: ADSP-21990BST
• Description: IC DSP CONTROLLER 16BIT 176LQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-21990BST

• Rohs Status: RoHS non-compliant
• Interface: SPI, SSP
• Clock Rate: 160MHz
• Non-volatile Memory: External
• On-chip Ram: 20kB
• Voltage - I/o: 3.30V
• Voltage - Core: 2.50V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 176-LQFP

SPECIFICATIONS
Specifications subject to change without notice.
RECOMMENDED OPERATING CONDITIONS—ADSP-21990BBC
1
2
3
4
RECOMMENDED OPERATING CONDITIONS—ADSP-21990BST
1
2
3
4
Parameter
V
V
AVDD
CCLK
HCLK
CLKIN
T
T
The HCLK frequency may be made to appear at the dedicated CLKOUT pin of the device. For low power operation, however, the CLKOUT pin can be disabled.
The peripherals operate at the HCLK rate, which may be selected to be equal to CCLK or CCLK
In order to attain the correct CCLK and HCLK values, the input clock frequency or crystal frequency depends on the internal operation of the clock generation PLL
The maximum junction temperature is limited to 140°C in order to meet all of the electrical specifications. It is ultimately the responsibility of the user to ensure that
Parameter
V
V
AVDD
CCLK
HCLK
CLKIN
T
T
The HCLK frequency may be made to appear at the dedicated CLKOUT pin of the device. For low power operation, however, the CLKOUT pin can be disabled.
The peripherals operate at the HCLK rate, which may be selected to be equal to CCLK or CCLK/2, up to a maximum of an 80 MHz HCLK for the ADSP-21990BST.
In order to attain the correct CCLK and HCLK values, the input clock frequency or crystal frequency depends on the internal operation of the clock generation PLL
The maximum junction temperature is limited to 140°C in order to meet all of the electrical specifications. It is ultimately the responsibility of the user to ensure that
circuit and the associated frequency ratio.
the power dissipation of the ADSP-21990 (including all dc and ac loads) is such that the maximum junction temperature limit of 140°C is not exceeded.
circuit and the associated frequency ratio.
the power dissipation of the ADSP-21990 (including all dc and ac loads) is such that the maximum junction temperature limit of 140°C is not exceeded.
JUNC
AMB
JUNC
AMB
DDINT
DDEXT
DDINT
DDEXT
4
4
1, 2
1, 2
3
3
Conditions
Internal (Core) Supply Voltage
External (I/O) Supply Voltage
Analog Supply Voltage
DSP Instruction Rate, Core Clock
Peripheral Clock Rate
Input Clock Frequency
Silicon Junction Temperature
Ambient Operating Temperature
Conditions
Internal (Core) Supply Voltage
External (I/O) Supply Voltage
Analog Supply Voltage
DSP Instruction Rate, Core Clock
Peripheral Clock Rate
Input Clock Frequency
Silicon Junction Temperature
Ambient Operating Temperature
Rev. A | Page 19 of 50 | August 2007
Min
2.375
3.135
2.375
0
0
0
–40ºC
Min
2.375
3.135
2.375
0
0
0
–40ºC
2, up to a maximum of a 75 MHz HCLK for the ADSP-21990BBC.
Typ
2.5
3.3
2.5
Typ
2.5
3.3
2.5
Max
2.625
3.465
2.625
150
75
150
140ºC
+85ºC
Max
2.625
3.465
2.625
160
80
160
140ºC
+85ºC
ADSP-21990
Unit
V
V
V
MHz
MHz
MHz
Unit
V
V
V
MHz
MHz
MHz
C
C
C
C