参数资料
型号: ADSP-21469BBCZ-3
厂商: Analog Devices Inc
文件页数: 11/72页
文件大小: 0K
描述: IC DSP 32/40BIT 400MHZ 324BGA
产品变化通告: Pin Function Change 08/Mar/2012
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI,EBI/EMI,I²C,SCI,SPI,SSP,UART/USART
时钟速率: 400MHz
非易失内存: 外部
芯片上RAM: 5Mb
电压 - 输入/输出: 3.30V
电压 - 核心: 1.05V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 324-BGA,CSPBGA
供应商设备封装: 324-CSPBGA
包装: 托盘
ADSP-21469
Rev. 0
|
Page 19 of 72
|
June 2010
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 12 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 char-
acteristics and activity level of the processor. The activity
level is reflected by the Activity Scaling Factor (ASF), which
represents application code running on the processor core
and having various levels of peripheral and external port
activity (Table 11). Dynamic current consumption is calcu-
lated by scaling the specific application by the ASF and
using baseline dynamic current consumption as a
reference.
External power consumption is due to the switching activity of
the external pins.
The ASF is combined with the CCLK frequency and VDD_INT
dependent data in Table 13 to calculate this part. The second
part is due to transistor switching in the peripheral clock
(PCLK) domain, which is included in the IDD_INT specification
equation.
Table 11. Activity Scaling Factors (ASF)1
1 See Estimating Power for SHARC Processors (EE-348) for more information on
the explanation of the power vectors specific to the ASF table.
Activity
Scaling Factor (ASF)
Idle
0.38
Low
0.58
High
1.23
Peak
1.35
Peak-typical (50:50)2
2 Ratio of continuous instruction loop (core) to DDR2 control code reads:writes.
0.87
Peak-typical (60:40)
0.94
Peak-typical (70:30)
1.00
Table 12. IDD-STATIC (mA)
TJ (°C)
VDD_INT (V)
1
0.95 V
1.0 V
1.05 V
1.10 V
1.15 V
–45
72
91
110
140
167
–35
79
99
119
149
181
–25
89
109
131
163
198
–15
101
122
145
182
220
–5
115
140
166
206
249
5
134
162
192
237
284
15
158
189
223
273
326
25
186
222
260
318
377
35
218
259
302
367
434
45
258
305
354
428
503
55
305
359
413
497
582
65
360
421
484
578
675
75
424
496
566
674
781
85
502
580
660
783
904
95
586
683
768
912
1048
105
692
794
896
1054
1212
115
806
921
1036
1220
1394
125
939
1070
1198
1404
1601
1 Valid temperature and voltage ranges are model-specific. See Operating Conditions on Page 17.
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