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參數(shù)資料
| 型號(hào)： | ADSP-21488KSWZ-3B |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 13/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CCD SIGNAL PROCESSOR 176LQFP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | SHARC® |
| 類型： | 浮點(diǎn) |
| 接口： | EBI/EMI，DAI，I²C，SPI，SPORT，UART/USART |
| 時(shí)鐘速率： | 350MHz |
| 非易失內(nèi)存： | 外部 |
| 芯片上RAM： | 3Mb |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 1.10V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 176-LQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 176-LQFP-EP（24x24） |
| 包裝： | 托盤 |
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Rev. B
|
Page 20 of 68
|
March 2013
Total Power Dissipation
The information in this section should be augmented with the
Engineer-to-Engineer Note “Estimating Power for ADSP-214xx
SHARC Processors” (EE-348).
Total power dissipation has two components:
1. Internal power consumption is additionally comprised of
two components:
Static current due to leakage. Table 14 shows the static
current consumption (IDD_INT_STATIC) as a function of
junction temperature (TJ) and core voltage (VDD_INT).
Dynamic current (IDD_INT_DYNAMIC), due to transistor
switching characteristics and activity level of the pro-
cessor. The activity level is reflected by the Activity
Scaling Factor (ASF), which represents the activity
level of the application code running on the processor
core and having various levels of peripheral and exter-
nal port activity (Table 13).
Dynamic current consumption is calculated by select-
ing the ASF that corresponds most closely with the
user application and then multiplying that with the
dynamic current consumption (Table 15).
2. External power consumption is due to the switching activ-
ity of the external pins.
Table 13. Activity Scaling Factors (ASF)1
Activity
Scaling Factor (ASF)
Idle
0.29
Low
0.53
Medium Low
0.61
Medium High
0.77
Peak Typical (50:50)2
0.85
Peak Typical (60:40)2
0.93
Peak Typical (70:30)2
1.00
High Typical
1.16
High
1.25
Peak
1.31
1 See the Engineer-to-Engineer Note “Estimating Power for ADSP-214xx SHARC
Processors” (EE-348) for more information on the explanation of the power
vectors specific to the ASF table.
2 Ratio of continuous instruction loop (core) to SDRAM control code reads and
writes.
Table 14. Static Current—IDD_INT_STATIC (mA)
1
TJ (°C)
VDD_INT (V)
0.975 V
1.0 V
1.025 V
1.05 V
1.075 V
1.10 V
1.125 V
1.15 V
1.175 V
–45
68
77
86
96
107
118
131
144
159
–35
74
83
92
103
114
126
140
154
170
–25
82
92
101
113
125
138
153
168
185
–15
94
104
115
127
140
155
171
187
205
–5
109
121
133
147
161
177
194
212
233
+5
129
142
156
171
188
206
225
245
268
+15
152
168
183
201
219
240
261
285
309
+25
182
199
216
237
257
280
305
331
360
+35
217
237
256
279
303
329
358
388
420
+45
259
282
305
331
359
389
421
455
492
+55
309
334
361
391
423
458
495
533
576
+65
369
398
429
464
500
539
582
626
675
+75
437
471
506
547
588
633
682
731
789
+85
519
559
599
645
693
746
802
860
926
+95
615
662
707
761
816
877
942
1007
1083
+105
727
779
833
897
958
1026
1103
1179
1266
+115
853
914
975
1047
1119
1198
1285
1372
1473
+125
997
1067
1138
1219
1305
1397
1498
1601
1716
1 Valid temperature and voltage ranges are model-specific. See Operating Conditions on Page 18.
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