Texas Instruments Evaluation Module for Nano Power Programmable Timer with Watchdog Functionality TPL5000EVM TPL5000EVM データシート
製品コード
TPL5000EVM
Supply Current Measurement
•
Set the desired delay, configuring S1 (from position 2 to 4).
•
Set the POWER GOOD source configuring S1 (position 1), if you set external source connect the
voltage source between the EXT_PGOOD and GND test points; do not turn on this voltage source.
Refer to the data sheet regarding the allowable voltage range. This can be found on the MSP430
LaunchPad Wiki (
voltage source between the EXT_PGOOD and GND test points; do not turn on this voltage source.
Refer to the data sheet regarding the allowable voltage range. This can be found on the MSP430
LaunchPad Wiki (
).
•
Configure I_SEL as explained in
.
•
Plug the evaluation board into the launchpad according to
Table 2. TPL5000EVM to Launchpad Connection
TPL5000EVM
MSP430 Launchpad
J1_10
J1
J11_20
J2
VCC
VCC of J3
RST
RST of J3
•
Insert a 2032 coin cell battery in the battery holder (BT), or alternatively connect a voltage source
between the SUPPLY and GND test points. DO NOT CONNECT THE COIN CELL BATTERY AND
THE VOLTAGE SOURCE TO SUPPLY THE EVALUATION BOARD AT SAME TIME.
between the SUPPLY and GND test points. DO NOT CONNECT THE COIN CELL BATTERY AND
THE VOLTAGE SOURCE TO SUPPLY THE EVALUATION BOARD AT SAME TIME.
•
Power on the voltage sources connected to the EVM.
2.2.1.1
SOFTWARE OF THE MSP430
Once loaded into the MSP430 of the launchpad, the code in
of this User’s Guide performs the
following features:
•
At power on, the red LED present on the Launchpad is turned ON.
•
As soon as the MSP430 receives a RESET signal from the TPL5000, the red LED blinks.
•
As soon as the MSP430 receives a WAKE signal from the TPL5000, the green LED blinks.
•
The S2 button of the Launchpad acts as a toggle button; the first push of the button does not allow the
MSP430 to send the DONE signal to the TPL5000, a second push of the button allows the MSP430 to
send the DONE signal.
MSP430 to send the DONE signal to the TPL5000, a second push of the button allows the MSP430 to
send the DONE signal.
2.2.2
EVM Standalone
•
Connect your micro controller to the IO header, in order to manage the I/O signal of the DUT.
•
Insert a 2032 coin cell battery in the battery holder (BT), or alternatively connect a voltage source
between the SUPPLY and GND test points. DO NOT CONNECT THE COIN CELL BATTERY AND
THE VOLTAGE SOURCE TO SUPPLY THE EVALUATION BOARD AT SAME TIME.
between the SUPPLY and GND test points. DO NOT CONNECT THE COIN CELL BATTERY AND
THE VOLTAGE SOURCE TO SUPPLY THE EVALUATION BOARD AT SAME TIME.
•
Power on the voltage sources connected to the EVM.
•
DO NOT LEAVE DONE PIN (4th pin of IO header) FLOATING. If supervisor feature is not needed,
connect DONE pin to GND.
connect DONE pin to GND.
3
Supply Current Measurement
The TPL5000EVM offers 2 ways to measure the current consumption of the DUT. First, disconnect the
TPL5000 from the launchpad or your micro controller, in order to not load the digital output pins of the
DUT.
TPL5000 from the launchpad or your micro controller, in order to not load the digital output pins of the
DUT.
3.1
DIRECT MEASUREMENT
•
Leave the I_SEL 3-pin header open.
•
DO NOT LEAVE DIGITAL INPUT PINS FLOATING; for instance:
–
Short the DONE pin (4th pin of IO header) to GND
–
Set PGOOD =1 (see
)
•
Connect a Digital Multi Meter, configured as the current meter (able to measure nA), between TP1 and
3
SNAU147 – July 2013
TPL5000EVM User's Guide
Copyright © 2013, Texas Instruments Incorporated