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XE5690G

Smart Spread Spectrum Transceiver

Xecom 

Layout PCB for XE900S-500 and XE900SL10

Despite the fact that the XE900S-500 is substantially

larger module than the XE900SL10, a common PCB

layout can be used to support both products. This

makes it easy to accommodate applications which

include nodes with both long range and short range

requirements.

The XE900SL10 requires a separate pin row for Pins 10

through 14. These pins will be hidden under the XE900S-

500 module when the larger module is installed. The

XE900SL10 also includes one unique signal, Reset.

Reset is an active high signal that can be left

unconnected if no external reset is desired.

The XE900S-500 and XE900SL10 can share board layout

because of common pin assignments. Pins 1 through 8

of the XE900SL10 are equivalent to Pins 3 through 10 on

the XE900S-500; they have the same functions and are

placed in the same sequence. Pin 9 on the XE900SL10 is

an unused pin and therefore does not conflict with the

ADC1 signal assigned to Pin 11 of the XE900S-500.

The figure below shows the overlapping layout that

supports both modules. The XE900S-500 outline and

pins are shown in green. XE900SL10 pins and outline are

shown in red.

XE900S-500/XE900SL10 Overlay

Gnd 1

Vcc 2

XE900S-500

/TXD 3/1 XE900SL10

/RXD 4/2

/CTS 5/3

/RTS 6/4

DIO3 7/5

14

DIO2 8/6

13

DIO1 9/7

12

DIO0 10/8

11

ADC1/NC 11/9

10

ADC0 12

Reset

ADC0

ADC1

Vcc

Gnd

XECOM

(3)

XE900S-500

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