User manual

Pin on EXT
connector
Pin name AT30TSE758
temperature
sensor pin
Comment
- A0 7 Address line for serial interface, shorted to GND
20 VCC 8
The temperature sensor has two I
2
C addresses; one for the temperature sensor and one for the
EEPROM. The addresses are "0b1001 A2 A1 A0" for the temperature sensor and "0b1010 A2 A1 A0" for
the EEPROM. The address selection lines (A2, A1, and A0) of the temperature sensor are shorted to
GND, which makes the default addresses 0b1001000 and 0b1010000. When communicating with the
EEPROM parts of the TWI address is used as a page address. For more details, see the device
(AT30TSE752A/754A/758A) datasheet.
5.3.3. Power LED
Power LED (D101) is connected to the power rail from the extension header. Current measurement
jumper has to be closed to enable power to the ATBTLC1000 module.
5.3.4. Reset Switch
ATBTLC1000-XPRO contains footprint of switch (SW100) along with resistor R111 and capacitor C107
that can be mounted to reset the ATBTLC1000. The switch is connected to the CHIP_EN pin of the
ATBTLC1000, which is pulled up by default.
5.3.5. 32kHz RTC Oscillator
The ATBTLC1000 has a 32.768kHz RTC oscillator that is used for BLE activities involving connection
events. There is also provision to reconfigure the ATBTLC1000 Xplained Pro board to bypass external
crystal oscillator with an external signal capable of driving 2pF on the RTC_CLK_P pin of the
ATBTLC1000-MR110CA.
Table 5-7 Configuring the RTC Oscillator
Configuration option Board configuration
32.768kHz RTC oscillator Open R105, Close J107
External signal on RTC_CLK_P Close R105, Open J107, J106
Atmel ATBTLC1000 Xplained Pro [USER GUIDE]
Atmel-42538B-BTLC1000-Xplained-Pro_User Guide-11/2015
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