User's Manual
Table Of Contents
- 1. Overview
- 2. Applications
- 3. Features
- 4. Technical data
- 5. Mechanical size
- 6. Soldering profile
- 7. Pin assignment
- 8. PCB design
- 9. Clock
- 10. Application circuits
- 11. Programming
- 12. Pre-flashed firmware
- 13. Adapter boards
- 14. Radio certification
- 15. Ordering information
- 16. Packaging dimension
- 17. Revision notes
- 18. References
User Manual
Version 1.1c
2013-07-01
OEM radio modules deRFmega
www.dresden-elektronik.de
Page 9 of 52
3.3. deRFmega128-22M12
The radio module deRFmega128-22M12 offers the following features:
Tiny size: 21.5 x 13.2 x 3.0 mm
59 LGA pads 0.6 x 0.6 mm
Supply voltage 2.0 V to 3.6 V
Antenna diversity support
RF shielding
Onboard 32.768 kHz crystal
(Deep-Sleep clock) and
16 MHz crystal
Application interfaces:
2x UART, 1x TWI
GPIO interface
Debug/Programming interfaces:
1x SPI, 1x JTAG, 1x ISP
2.4 GHz front-end module with
internal 20 dB PA and LNA
Solderable 2.4 GHz RF output pad
(2x RFOUT, 6x RFGND)
Certification: CE, FCC pending
Figure 3 shows the block diagram of the radio module deRFmega128-22M12.
ATmega128RFA1
Transceiver crystal
16MHz [+/-10ppm]
JTAG
UART
VCC
2.0V to 3.6V
Watch crystal
32.768kHz
SPI
TWI
ADC
GPIO
2.4GHz Front-End
RFout 1
RFout 2
RF
Control
Figure 3: Block diagram deRFmega128-22M12