System Components; Temperature Sensor; Eeprom; Rtc - MTX -GATEWAY User Manual

4. System Components

4.1 Temperature Sensor

There is a National Semiconductor LM73 temperature sensor on the TQMa28 module. It can be read out
via the I2C bus 1. The base address can be taken from the following table.
I2C BUS POSITION
1 TQMa28

4.2 EEPROM

A 64Kibit EEPROM (ST Microelectronics M24C64-WDW6TP) is on the TQMa28 module. The EEPROM is
controlled via the processor's I2C bus 1. Writing protection (WP) of the EEPROM is not available. The base
address can be taken from the following table.
I2C BUS POSITION
1 TQMa28

4.3 RTC

A DS1339U RTC module is on the MTX-Gateway board. The RTC is supplied by a super capacitor in order
to maintain the information should the main supply be removed.
I2C BUS POSITION
1 MTX-Gateway
MTX-Gateway | 2019/4
MTX © by MATRIX ELECTRONICA S.L.U.
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DEVICE
Temperature sensor - LM73
DEVICE
EEPROM – M24C46
DEVICE
RTC DS1339U-33
ADDRESS
0x49
ADDRESS
0x50
ADDRESS
0x68
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