Texas Instruments LMP91000EVM Evaluation Module LMP91000EVM/NOPB LMP91000EVM/NOPB 데이터 시트
제품 코드
LMP91000EVM/NOPB
4
LMP91000EVM User’s Guide
SNAU121-April 2012
2.5.3. Voltage reference
If the on board 2.5V voltage reference fits the requirements of the application, do not accomplish the
following steps.
following steps.
1. Remove R6 resistor
2. Connect a reference voltage (1.5V to VDD) between VREF test point and GND test point.
2. Connect a reference voltage (1.5V to VDD) between VREF test point and GND test point.
2.5.4. I2C bus
The I2C bus requires two 10kohm pull-up resistors (R1, R2); the external microcontroller can be connected to the
SPIO-GPSI16 connector according to the following pin out:
SPIO-GPSI16 connector according to the following pin out:
SCL
pin 12 of SPIO-GPSI16
SDA
pin 11 of SPIO-GPSI16
GND
pin 2 of SPIO-GPSI16
Refer to LMP91000’s datasheet for further details on I2C commands and registers.
The footprints of the pull-up resistors (R1, R2) are on the bottom side of the eval board.
2.5.5. Other
Remove the resistor R8 in order to disconnect the ADC’s input from LMP91000’s output.