© Microhard Systems Inc.
16
3.0 Hardware Description
Pin Name
No.
Description
In/
Out
Ethernet LED0,1
1,3 *Reserved for future Ethernet LED use.*
NC
2,4,6,8 Reserved for factory use only.
Vclock
5 Real time clock to wake-up the module from sleep mode.
Internally pulled-up, this pin may be left floating.
I
!Bootpgm_Mode
7 Active low input signal to download
firmware into the module. Pull high or leave unterminated if not
being used.
I
USR_AN0
9 Analog input. *Reserved for future use.*
I
Ethernet
10,12,14,16 *Reserved for future Ethernet use.*
!WAKEUP_usr
11 Active low input signal to wake-up the module from sleep mode.
Internally pulled-up, this pin may be left floating.
I
!CONFIG
13 Active low input signal to put the module into default serial
interface (RS-232) and default baud rate (9600,8/N/1, no flow
control) during power up. Pull high or leave
I
!RESET
15 Active low input will reset module
I
Vbat
17 Battery voltage sensing analog input line, up to 60VDC. A 10k-
ohm resistor is required inline from the power source. Reading
will be 0 if connected to GND (ground).
I
RSMode
19 Sleep mode indication output. Active high.
O
Control RxD
18 Diagnostics receive data. Logic level output from Nano Series to
a PC.
O
Control TxD
20 Diagnostics transmit data. Logic level input from a PC into the
Nano Series.
I
USB_DDM
21 *Reserved for future USB*
USB_CNX
23 *Reserved for future USB*
USB_DPP
25 *Reserved for future USB*
Reserved
25,29,31,33 Reserved for future use.
LED_RX
22 Active high output indicates receive and synchronization status.
Can drive LED directly. Refer to section 3.4.2 for additional
information about LED operation.
O
LED_TX
24 Active high output indicates module is transmitting data over the
RF channel. Can drive LED directly. Refer to section 3.4.2 for
additional information about LED operation.
O
RSSI3_LED
26 Receive Signal Strength Indicator 3. Active high, can drive LED
directly. Refer to
Section 3.4.2.1 Table 3-6: LED Operation
for
additional information about LED operation.
O
RSSI2_LED
28 Receive Signal Strength Indicator 2. Active high, can drive LED
directly. Refer to
Section 3.4.2.1 Table 3-6: LED Operation
for
additional information about LED operation.
O
RSSI1_LED
30 Receive Signal Strength Indicator 1. Active high, can drive LED
directly. Refer to
Section 3.4.2.1 Table 3-6: LED Operation
for
additional information about LED operation.
O
Table 3-1: Nano Series Pin-Out Description
