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LoRaMote
USER GUIDE
WIRELESS, SENSING and TIMING PRODUCTS
4.3.4 SAR proximity sensor SX9500
The SX9500 is a low-cost, very low power 4-channel SAR controller that can operate either as a proximity
or button sensor. The SX9500 includes sophisticated on-chip auto-calibration circuitry to regularly perform
sensitivity adjustments, maintaining peak performance over a wide variation of temperature, humidity and
noise environments, providing simplified product development and enhanced performance. A dedicated
transmit enable (TXEN) pin is available to synchronize capacitive measurements for applications that
require synchronous detection, enabling very low supply current and high noise immunity by only
measuring proximity when requested. The SX9500 is accessible through the I2C bus at the address 0x28.
Please, consult Semtech website for more detailed information on the device.
4.3.5 GPS module UP501
The u-blox UP501 GPS receiver module with embedded GPS antenna enables high performance
navigation in the most stringent applications and solid fix even in harsh GPS visibility environments. The
UP501 is implemented with a Deep Sleep mode allowing reducing the power consumption while the
positioning of the device is not mandatory. Connected to the UART of the WiMOD iM880A, the GPS
module is providing directly the NMEA data from the GPS. Please, consult the u-blox website for more
detailed information on the device.
4.3.6 IO Expander
The LoRaMote is equipped with the Semtech SX1509
ultra low voltage
IO- expander which allows
connecting some of the less vital part of the circuitry such as spare IOs and LEDs. The IO expander is
accessible through the I2C at the address 0x3E. Please, consult the Semtech website for more detailed
information on the device.
4.3.7 EEPROM
The LoRaMote is also equipped with a Microchip 24AA1287 EEPROM which can hold up to 128 Kbit
(16K x 8) of data. The EEPROM is accessible Through the I2C at the address 0xA8. Please, consult the
Microchip website for more detailed information on the device.
Revision 2.0 – July 2014
Page 9 of 23
www.semtech.com
©2014 Semtech Corporation
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