SM320LF2407-EP Datasheet, PDF (61/112 Pages) Texas Instruments – 
DSP CONTROLLERS

SM320LF2407AĆEP
DSP CONTROLLERS
current consumption graphs
SGUS036B − JULY 2003 − REVISED OCTOBER 2003
100
90
80
70
60
50
40
30
20
10
0
0
5 10 15 20 25 30 35 40 45
CLKOUT Frequency (MHz)
Figure 15. LF2407A Typical Current Consumption (With Peripheral Clocks Enabled)
reducing current consumption
240x DSPs incorporate a unique method to reduce the device current consumption. A reduction in current
consumption can be achieved by turning off the clock to any peripheral module which is not used in a given
application. Table 17 indicates the typical reduction in current consumption achieved by turning off the clocks
to various peripherals. Refer to the TMS320LF/LC240xA DSP Controllers Reference Guide: System and
Peripherals (literature number SPRU357) for further information on how to turn off the clock to the peripherals.
Table 17. Typical Current Consumption by Various Peripherals (at 40 MHz)
PERIPHERAL MODULE
CURRENT REDUCTION (mA)
CAN
8.4
EVA
6.1
EVB
6.1
ADC
3.7†
SCI
1.9
SPI
1.3
† _{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 (ICCA) as well.
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