User's Manual

Bluegiga Technologies Oy
Page 26 of 31
operation. I
2
C support is compliant with the NXP I2C specification version 2.1 and supports standard mode
(up to 100 kbps) and fast mode (up to 400 kbps). In addition, 7-bit device addressing modes are supported, as
well as master and slave modes..
The ultralow-power analog comparator enables applications to wake up from PM2 or PM3 based on an analog
signal. Both inputs are brought out to pins; the reference voltage must be provided externally. The comparator
output is connected to the I/O controller interrupt detector and can be treated by the MCU as a regular I/O pin
interrupt.
RF front end
RF front end includes balun, power amplifier, low noise amplifier, band pass filter, and a ceramic chip antenna
with matching network. Optimal matching combined with effective low pass filter provides extremely low in-
band spurious emissions and harmonics.