User Guide
– –
– –
12 13
0.45"
(11.43)
0.812"
(20.62)
0.116"
(2.95)
0.271"
(6.88)
0.195"
(4.96)
0.078"
(1.98)
Module Dimensions
Figure 18: HumPRC
TM
Series Transceiver Dimensions
0.45"
(11.43)
0.55"
(13.97)
0.07"
(1.78)
Figure 19: HumPRC
TM
Series Transceiver Pre-certified Version Dimensions
Pin Descriptions
Pin Number Name I/O Description
13 LATCH_EN I
If this line is high, then the status line
outputs are latched (a received command
to activate a status line toggles the output
state). If this line is low, then the output lines
are momentary (active for as long as a valid
signal is received). Do not leave floating.
19 ANTENNA — 50-ohm RF Antenna Port
21 VCC — Supply Voltage
22 RESET
2
I
This line resets the module when pulled
low. It should be pulled high for normal
operation. Leave unconnected to minimize
leakage current.
23 LNA_EN 0
Low Noise Amplifier Enable. This line is
driven high when receiving. It is intended to
activate an optional external LNA.
24 PA_EN O
Power Amplifier Enable. This line is driven
high when transmitting. It is intended to
activate an optional external power amplifier.
26 CMD_DATA_OUT O
Command Data Out. Output line for the
serial interface commands
27 CMD_DATA_IN I
Command Data In. Input line for the serial
interface commands. If serial control is not
used, this line should be tied to supply to
minimize current consumption.
28 ACK_EN I
Pull this line high to enable the module to
send an acknowledgement message after
a valid control message has been received.
Do not leave floating.
29 PB
1
I
A high on this line initiates the Join process,
which causes two units to accept each
other’s transmissions. It is also used with
a special sequence to reset the module to
factory default configuration.
30 MODE_IND O
This line indicates module activity. It can
source enough current to drive a small
LED, causing it to flash. The duration of the
flashes indicates the module’s current state.
31 ACK_OUT O
This line goes high when the module
receives an acknowledgement message
from another module after sending a control
message.
1. These lines have an internal 20kΩ pull-down resistor
2. These lines have an internal 10kΩ pull-up resistor
Figure 17: HumPRC
TM
Series Transceiver Pin Descriptions