参数资料
型号: ADSP-21479KBCZ-2A
厂商: Analog Devices Inc
文件页数: 14/72页
文件大小: 0K
描述: IC DSP SHARC 266MHZ LP 196CSPBGA
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI,EBI/EMI,I²C,SPI,SPORT,UART/USART
时钟速率: 266MHz
非易失内存: ROM(4Mb)
芯片上RAM: 5Mb
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 196-LFBGA,CSPBGA
供应商设备封装: 196-CSPBGA(12x12)
包装: 托盘
Rev. A
|
Page 21 of 72
|
September 2011
Total Power Dissipation
Total power dissipation has two components:
1. Internal power consumption
2. External power consumption
Internal power consumption also comprises two components:
1. Static, due to leakage current. Table 13 shows the static cur-
rent consumption (IDD-STATIC) as a function of junction
temperature (TJ) and core voltage (VDD_INT).
2. Dynamic (IDD-DYNAMC), due to transistor switching charac-
teristics and activity level of the processor. The activity level
is reflected by the Activity Scaling Factor (ASF), which rep-
resents application code running on the processor core and
having various levels of peripheral and external port activ-
ity (Table 12). Dynamic current consumption is calculated
by scaling the specific application by the ASF and using
baseline dynamic current consumption as a reference. The
ASF is combined with the CCLK frequency and VDD_INT
dependent data in Table 14 to calculate this part.
External power consumption is due to the switching activity of
the external pins.
Table 12. Activity Scaling Factors (ASF)1
1 See Estimating Power for ADSP-214xx SHARC Processors (EE-348) for more
information on the explanation of the power vectors specific to the ASF table.
Activity
Scaling Factor (ASF)
Idle
0.31
Low
0.53
Medium Low
0.62
Medium High
0.78
Peak-Typical (50:50)
2
2 Ratio of continuous instruction loop (core) to SDRAM control code reads and
writes.
0.85
Peak-Typical (60:40)2
0.93
Peak-Typical (70:30)2
1.00
High Typical
1.18
High
1.28
Peak
1.34
Table 13. Static Current—IDD-STATIC (mA)
1
TJ (°C)
VDD_INT (V)
1.05 V
1.10 V
1.15 V
1.20 V
1.25 V
1.30 V
1.35 V
–45
< 0.1
0.4
0.8
1.3
2.1
3.3
–35
< 0.1
0.4
0.7
1.1
1.7
2.9
–25
< 0.1
0.2
0.4
0.8
1.2
1.7
2.9
–15
< 0.1
0.4
0.6
1.0
1.4
1.9
3.2
–5
0.20.6
0.91.3
1.82.3
3.7
+5
0.50.9
1.31.8
2.33.0
4.4
+15
0.8
1.4
1.8
2.3
3.0
3.7
5.1
+25
1.3
1.9
2.5
3.1
3.9
4.7
6.2
+35
2.0
2.8
3.4
4.2
5.1
6.0
8.0
+45
3.0
3.9
4.7
5.7
6.7
7.8
10.1
+55
4.3
5.4
6.3
7.6
8.8
10.3
12.9
+65
6.0
7.3
8.6
10.1
11.7
13.5
16.4
+75
8.3
9.9
11.5
13.3
15.3
17.4
21.2
+85
11.2
13.2
15.3
17.5
19.9
22.6
27.1
+95
15.2
17.6
20.1
22.9
26.1
29.4
34.6
+100
17.4
20.2
22.9
25.9
29.4
33.0
39.2
+105
20.0
23.0
26.1
29.5
33.4
N/A
+115
26.3
30.0
33.9
38.2
42.9
N/A
+125
34.4
38.9
43.6
48.8
54.8
N/A
1 Valid temperature and voltage ranges are model-specific. See Operating Conditions on Page 19.
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