Block Diagram

RF_n
CC2640
Power
Only
USB
Plug
3.3V
LDO
2xAAA
Alkaline
Battery
Non-Rechargable
3V
2032
Coin
Cell
I2C
RTC
Power Filters
32kHz Xtal
32kHz Xtal
24MHz Xtal
DC-DC
RF_p
Antenna
Matching
Passives
Inverted 'F'
PCB Antenna
Test Connector
PCB Finger
JTAG
Connector
RED
LED
BLE
4.0