RFM69

The RFM69 is the successor of the popular RFM22 which in turn was the successor of the RFM12.

This transceiver module is based on the RF69 transceiver chip that can be programmed via SPI interface. This chip in turn is based on Semtech SX1231 (20mW standard version) and Semtech SX1231H (100mW H version).

On the RF69 transceiver chip, look at the 4-digit number below RF69 to find out the production date. The first two numbers are the year, the second two numbers represent the week of year.

The board is available in four frequency versions: 315MHz, 433MHz, 868MHz, and 915MHz.

Board Variations

This board is available in four variants:

Model	TX Power	Pins	Size	Remarks
RFM69(W)	13dBm/20mW	16	19.7x16mm	end of life
RFM69C(W)	13dBm/20mW	14	16x16mm	active, pin-compatible to older model RFM12B
RFM69H(W)	20dBm/100mW	16	19.7x16mm	end of life
RFM69HC(W)	20dBm/100mW	14	pin-compatible to older model RFM12B

The actual version is printed on the back side:

Technical Data

Item	Value
Voltage	1.8-3.6V
Frequency	387-464MHz
Output Power	10dBm / 10mW
Modulation	FSK, GFSK, MSK, GMSK and OOK
Standby Current	0.1uA
TX Operating Current	45mA at 13dBa/20mW
RX Operating Current	16mA
Transmission Rate	up to 300kbps (FSK)
Receiver Sensitivity	-115dBm
Extras	RSSI signal detection, hardware CRC, carrier sense, 64-byte RX and TX buffer
Interface	SPI

Special Features

The transceiver chip comes with a number of useful functionalities built into its hardware:

• Manchester Encoder/Decoder
• Packetengine for synchronous word, CRC, Scrambling, AES-128 encryption
• 66bit FIFO buffer
• built-in temperature sensor

Pins

All pins are labeled on the back side:

Pin	Description
GND	negative voltage
ANA	Antenna
GND	negative voltage
SCK	SPI-Interface, Clock
MISO	SPI-Interface, Data Out
MOSI	SPI-Interface, Data In
NSS	SPI-Interface, Chip Select
NC	not connected
3.3V	1.8-3.6V
DIO5	ModeReady ClkOut, Data
DIO4
DIO3	Fifo Full, PLL Lock, RSSI, SyncAddress, TXReady
DIO2	FifoNotEmpty, Automode, Data
DIO1	FifoLevel, FifoFull, FifoNotEmpty, PLL Lock, Timeout
DIO0	PLL Lock, CrcOk, Payload Ready, SyncAddress, RSSI, PacketSent, TxReady
RESET	Reset

Interface

This board uses the SPI interface to communicate with a microcontroller.

Software Libraries

RFM69
jeelib

Data Sheet

RF69 Transceiver Chip
Semtech SX1231

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