Datasheet
Rev. I | Page 28 of 68 | July 2010
ADSP-BF534/ADSP-BF536/ADSP-BF537
System designers should refer to Estimating Power for the
ADSP-BF534/BF536/BF537 Blackfin Processors (EE-297), which
provides detailed information for optimizing designs for lowest
power. All topics discussed in this section are described in detail
in EE-297. Total power dissipation has two components:
1. Static, including leakage current
2. Dynamic, due to transistor switching characteristics
Many operating conditions can also affect power dissipation,
including temperature, voltage, operating frequency, and pro-
cessor activity. Electrical Characteristics on Page 26 shows the
current dissipation for internal circuitry (V
DDINT
). I
DDDEEPSLEEP
specifies static power dissipation as a function of voltage
(V
DDINT
) and temperature (see Table 16 or Table 15), and I
DDINT
specifies the total power specification for the listed test condi-
tions, including the dynamic component as a function of voltage
(V
DDINT
) and frequency (Table 18).
The dynamic component is also subject to an Activity Scaling
Factor (ASF) which represents application code running on the
processor (Table 17).
Table 15. Static Current–500 MHz, 533 MHz, and 600 MHz Speed Grade Devices (mA)
1
T
J
(°C)
Voltage (V
DDINT
)
0.80 V 0.85 V 0.90 V 0.95 V 1.00 V 1.05 V 1.10 V 1.15 V 1.20 V 1.25 V 1.30 V 1.32 V 1.375 V 1.43 V
–40 3.9 4.7 6.8 8.2 9.9 12.0 14.6 17.3 20.3 24.1 27.1 28.6 36.3 44.4
0 17.0 19.2 21.9 25.0 28.2 32.1 36.9 41.8 47.7 53.8 61.0 63.8 73.2 84.1
25 35.0 39.2 44.3 50.8 56.1 63.3 69.1 76.4 84.7 93.5 104.5 109.1 123.4 138.8
40 53.0 59.2 65.3 71.9 79.1 88.0 96.6 108.0 120.0 130.7 142.6 148.5 166.5 185.6
55 76.7 84.6 93.6 103.1 113.7 123.9 136.3 148.3 162.8 178.4 194.4 201.4 223.7 247.5
70 110.1 120.0 130.9 142.2 156.5 171.3 185.2 201.7 220.6 239.7 259.8 268.8 295.9 325.2
85 150.1 164.5 178.7 193.2 210.4 228.9 247.7 268.8 291.4 314.1 341.1 351.2 384.6 420.3
100 202.3 219.2 236.5 255.8 277.8 299.8 323.8 351.2 378.8 407.5 440.4 453.4 494.3 538.2
105 223.8 241.4 260.4 282.0 303.4 328.7 354.5 381.7 410.8 443.6 477.8 492.2 535.1 581.5
1
Values are guaranteed maximum I
DDDEEPSLEEP
specifications.
Table 16. Static Current–300 MHz and 400 MHz Speed Grade Devices (mA)
1
T
J
(°C)
Voltage (V
DDINT
)
0.80 V 0.85 V 0.90 V 0.95 V 1.00 V 1.05 V 1.10 V 1.15 V 1.20 V 1.25 V 1.30 V 1.32 V
–40 2.6 3.2 3.7 4.5 5.5 6.6 7.9 9.3 10.5 12.5 13.9 14.8
0 6.6 7.8 8.4 9.9 10.912.313.815.517.519.621.723.1
25 12.2 13.5 14.8 16.4 18.2 19.9 22.7 25.6 28.4 31.8 35.7 37.2
40 17.2 19.0 20.6 22.9 25.9 28.2 31.6 34.9 38.9 42.9 47.6 49.5
55 25.7 27.8 30.9 33.7 37.3 41.4 44.8 50.0 54.8 59.4 66.1 68.4
70 37.6 41.3 44.8 48.9 53.9 58.6 63.9 69.7 76.9 84.0 92.2 94.9
85 53.7 58.3 63.7 69.0 75.9 82.9 90.5 98.4 106.4 115.3 124.6 128.1
100 75.1 82.3 88.5 95.8 104.0 112.5 121.8 130.6 141.3 153.2 164.8 169.7
105 84.5 91.2 98.2 106.0 114.2 123.0 132.4 143.3 155.0 167.4 179.8 185.4
115
2
103.8 111.8 120.3 127.6 138.0 148.5 159.6 171.4 184.6 198.8 213.4 219.6
120
2
115.5 123.6 132.2 141.9 152.3 163.7 175.6 189.3 202.8 217.7 232.3 238.6
1
Values are guaranteed maximum I
DDDEEPSLEEP
specifications.
2
Applies to automotive grade models only.