Rainbow Electronics GM862-QUAD-PY User Manual

Page 57

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GM862-QUAD / PY Hardware User Guide

1vv0300748 Rev. 5 - 20/09/07

page 57 of 68

Not all GPIO pins support all these three modes:

• GPIO1 is an INPUT ONLY

• GPIO2 is an OUTPUT ONLY (open collector)

• GPIO3, GPIO8 to GPIO13 support both input or output mode but not Alternate function.
• GPIO4 supports all three modes and can be input, output, RF Transmission Control

(Alternate function)

• GPIO5 supports all three modes and can be input, output, RFTXMON output (Alternate

function)

• GPIO6 supports all three modes and can be input, output, ALARM output (Alternate function)
• GPIO7 supports all three modes and can be input, output, BUZZER output (Alternate

function)

All GPIO pins except from GPIO1 and GPIO2 that are buffered with a transistor, are 2.8V CMOS
signals.

fig. 01

ch1: ON_OFF (2sec)

ch2: GPIO 06 [ bis ]

GM862