Datasheet

TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L − JULY 2000 − REVISED SEPTEMBER 2007
77
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
EMU0
EMU1
TMS
TDI
TDO
TCK
VDDO
DSP
EMU0
EMU1
TMS
TDI
TDO
TCK
TCK_RET
13
14
2
1
3
7
11
9
6 inches or less
PD
GND
GND
GND
GND
GND
5
4
6
8
10
12
JTAG Header
VDDIO
TRSTTRST
Figure 23. Emulator Connection Without Signal Buffering for the DSP
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. See 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 (I
CCA
) as well.