User's Manual

Telit GE863-QUAD / GE863-PY
Hardware User guide
1vv0300715, Rev. ISSUE#0, - 21/02/06
Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved page 9 of 71
NOTE: don't use any pull up resistor on the RESET# line nor any totem pole digital output. Using
pull up resistor may bring to latch up problems on the GE863-QUAD/PY power regulator and
improper functioning of the module. The line RESET# must be connected only in open collector
configuration.
TIP: The unconditional hardware reboot should be always implemented on the boards and software
should use it as an emergency exit procedure.
For example:
1- Let's assume you need to drive the RESET# pad with a totem pole output of a +3/5 V
microcontroller (uP_OUT2):