RM024 User Manual
Version 2.3
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www.lairdtech.com/wireless
7
CONN-GUIDE-RAMP24-0413
SMT
Pin
Pluggable Pin
Type
Signal Name
Functions
16
15
O
In Range
When logic Low, the client is in range and
synchronized with a server. This will always be
Low on a server.
17
16
I
RTS
Request to Send. Floats high if left unconnected.
When enabled in EEPROM, the module will not
transmit data out the Serial UART unless the pin is
Low.
18
12
O
CTS
Clear to Send - CTS is used for hardware flow
control. CTS will toggle high when the input
buffer reaches the CTS On threshold until the
buffer recedes below CTS Off.
19
18
GIO_8
Generic Input
1
20
13
GIO_5
Reserved for future use. Do not connect.
21
4
GIO_6
Reserved for future use. Do not connect.
22
20
I
GIO_7
Analog to Digital Input
Tips:
All I/O matches the Vcc.
All inputs are weakly pulled High via a 20k Ohm pull-up resistor and may be left floating during normal
operation
Minimum Connections: VCC, VPA, GND, TXD, & RXD
Signal direction is with respect to the transceiver
Unused pins should be left disconnected
Input Characteristics
Table 3: Input Characteristics
Signal Name
High Min.
High Max.
Low Min.
Low Max.
µP_Reset
0.8 v
Vcc
0 v
0.6 v
RTS
2.31 v
Vcc
0 v
.99 v
AD_In
N/A
Vcc
0 v
N/A
All other inputs
70% Vcc
Vcc
0 v
30% Vcc
Output Characteristics
Table 4: Output Characteristics
Signal Name
High Min.
High Max.
Low Min.
Low Max.
Sink Current
GO_0
2.5 v
3.3 v
0 v
0.4 v
20 mA
GO_1
2.5 v
3.3 v
0 v
0.4 v
20 mA
PWM_Output
N/A
3.3 v
0 v
N/A
4 mA
All other inputs
2.5 v
3.3 v
0 v
0.4 v
4 mA
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