RFM50 Datasheet, PDF (4/8 Pages) List of Unclassifed Manufacturers – MCU with 100mW 433/470/868/915 MHz ISM Band Transceiver Module

XTAL2
AO
DI
AI
P0.2
D I/O or A I
RFM50 V1.0
External Clock Output. This pin is the excitation driver for an external crystal or
resonator.
External Clock Input. This pin is the external clock input in external CMOS clock
mode.
External Clock Input. This pin is the external clock input in capacitor or RC
oscillator configurations.
See RF50 Oscillator section for complete details.
Port 0.2. See RF50 Port I/O Section for a complete description.
XTAL1
P0.0
AI
D I/O or A I
External Clock Input. This pin is the external oscillator return for a crystal or
resonator. See RF50 Oscillator section.
Port 0.0. See RF50 Port I/O section for a complete description.
VREF
RST/
AI
AO
D I/O
C2CK
P2.7/
D I/O
D I/O
C2D
P2.6
GND
VDD
P2.5
P2.4
P2.3
P2.2
XTAL4
XTAL3
P2.1
P2.0
P1.7
P1.6
P1.5
NIRQ
D I/O
D I/O or A I
G
PI
D I/O or A I
D I/O or A I
D I/O or A I
D I/O or A I
AO
AI
D I/O or A I
D I/O or A I
D I/O or A I
D I/O or A I
D I/O or A I
DO
XOUT
AO
External VREF Input.
Internal VREF Output. External VREF decoupling capacitors are recommended.
See RF50 Voltage Reference section.
Device Reset. Open-drain output of internal POR or VDD monitor. An external
source can initiate a system reset by driving this pin low for at least 15 μs. A 1–5
k　 pullup to VDD_MCU is recommended. See Reset Sources section for a
complete description.
Clock signal for the C2 Debug Interface.
Port 2.7. This pin can only be used as GPIO. The Crossbar cannot route signals
to this pin and it cannot be configured as an analog input. See RF50 Port I/O
section for a complete description.
Bi-directional data signal for the C2 Debug Interface.
Port 2.6. See RF50 Port I/O section for a complete description.
Power ground
Positive power supply, 1.8 to 3.6 V.
Port 2.5. See RF50 Port I/O section for a complete description.
Port 2.4. See RF50 Port I/O section for a complete description.
Port 2.3. See RF50 Port I/O section for a complete description.
Port 2.2. See RF50 Port I/O section for a complete description.
SmaRTClock Oscillator Crystal Output.
SmaRTClock Oscillator Crystal Input.
Port 2.1. See RF50 Port I/O section for a complete description.
Port 2.0. See RF50 Port I/O section for a complete description.
Port 1.7. See RF50 Port I/O section for a complete description.
Port 1.6. See RF50 Port I/O section for a complete description.
Port 1.5. See RF50 Port I/O section for a complete description.
RF22 peripheral interrupt status pin. Will be set low to indicate a pending RF22
interrupt event. See the RF22 Control Logic Registers for more details. This pin
is an open-drain output with a 220 k　 internal pullup resistor. An external pull-up
resistor is recommended.
RF22 peripheral crystal oscillator output. Connect to an external 30 MHz crystal
or leave floating if driving the XIN pin with an external signal source.
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