TMS320F2808 Datasheet, PDF (86/123 Pages) Texas Instruments – Digital Signal Processors

TMS320F2808, TMS320F2806
TMS320F2801, UCD9501
Digital Signal Processors
SPRS230F – OCTOBER 2003 – REVISED SEPTEMBER 2005
Table 6-4. Typical Current Consumption by Various
Peripherals (at 100 MHz)⁽¹⁾
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PERIPHERAL
MODULE
ADC
I_DD CURRENT
REDUCTION (mA)
8 ⁽²⁾
I2C
5
eQEP
5
ePWM
5
eCAP
2
SCI
4
SPI
5
eCAN
11
(1) All peripheral clocks are disabled upon reset. Writing to/reading
from peripheral registers is possible only after the peripheral clocks
are turned on.
(2) This number represents the current drawn by the digital portion of
the ADC module. Turning off the clock to the ADC module results in
the elimination of the current drawn by the analog portion of the
ADC (I_DDA18) as well.
NOTE
The baseline I_DD current (current when the core is executing a dummy loop with no
peripherals enabled) is 110 mA, typical. To arrive at the I_DD current for a given application,
the current-drawn by the peripherals (enabled by that application) must be added to the
baseline I_DD current.
6.4.2 Current Consumption Graphs
250.0
200.0
150.0
100.0
50.0
0.0
10
20
30
40
50
60
70
80
90
100
SYSCLKOUT (MHz)
IDD
IDDA18
1.8-V current
IDDIO
IDD3VFL
3.3-V current
Figure 6-1. Typical Operational Current Versus Frequency (F2808)
86
Electrical Specifications