6 basic hints for low, Power applications – Texas Instruments MSP430x1xx User Manual
Page 52
Basic Hints for Low
-
Power Applications
3-22
3.6
Basic Hints for Low
-
Power Applications
There are some basic practices to follow when current consumption is a critical
part of a system application:
-
Switch off analog circuitry when possible.
-
Select the lowest possible operating frequency for the core and the
individual peripheral module.
-
Use the interrupt driven software; the program starts execution rapidly.
-
Tie all unused inputs to an applicable voltage level. The list below defines
the correct termination for all unused pins.
Pin
Potential
Comment
-
AV
CC
:
DV
CC
-
AV
SS
:
DV
SS
-
Xout:
open
-
XIN
DV
SS
-
XT2IN
DV
SS
13x and 14x devices
-
XT2OUT
open
13x and 14x devices
-
Px.0 to Px.7:
open
Unused ports switched to port function and
output direction
-
RST/NMI:
DV
CC
resp.V
CC
Pullup resistor 100k
-
Test/V
PP
DV
SS
11x devices
-
Test
DV
SS
11x1 devices
-
TDO:
-
TDI:
Refer to device specific datasheets for the correct termina-
-
TMS:
tion of these pins.
-
TCK: