ZULU Telemetry
Pin out
Pin Description
Pin No
1
2, 15
3
4-5
6, 8-11, 25
-27
7, 21-22
12
13
14
16
17, 18
19
Pr
im
el
Direction
In
In
In
In / Out
In / Out
In
In
Out
In
Out
In
In
In
In / Out
In
Name
ANT
GND
Description
Antenna Input / Output 50ohm Impedance
Connect to ground
in
Analogue /
Digital
I/O1-2
I/O 3-10
Connect to Vcc = I/O1-2 are analogue
Connect to GND = I/O1-2 are digital
Analogue or digital I/Os 0—Vcc,
connect to GND if unused
When configured as transmitter:
Digital inputs: high Impedance inputs
When configured as receiver:
Digital outputs: LVCMOS output drive
y
ar
NC
Reset
Watchdog
Error LED
Vcc
TX/RX
LEDs
TX/RX
Leave unconnected
Resets module operation, pull high for ordinary use.
Connect to Vcc = Turns OFF “watchdog”
Connect to GND = Turns ON “watchdog”
LED drive output. Flashes if Zulu Tx has not received
acknowledgment or Zulu Rx not received watchdog.
Supply voltage
Active LED output when module is transmitting or
receiving RF data packets.
Connect to Vcc = Module is a Transmitter
Connect to GND = Module is a Receiver
20
Ch Sel
Sets the channel frequency
Connect to Vcc = Operates on ch A 869.500
Connect to GND = Operates on ch B 868.133
Connect to momentary switch to GND, when activated plac-
es the module into pairing mode.
Connect together to enable RF interrupts on chip
(mandatory).
Connect 30MHz XTAL here to drive RF circuit
ta
Da
23
24, 28
29-30
Learn
IRQ In/Out
XTAL1-2
DS-ZULUT-1
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