User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.9 – 07-02-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 16 of 80
NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
RTS pin should be connected to the GND (on the module side) if flow control is not used.
The above pins are also necessary to debug the application when the module is assembled on it.
PAD
signal
M1,M2,N1,N2,P1,P2
VBATT & VBATT_PA
E1,G1,H1,J1,L1,A2,E2,F2,G2,H2,
J2,K2,L2,R2,M3,N3,P3,R3,D4,M4,
N4,P4,R4,N5,P5,R5,N6,P6,R6,P8,
R8,P9,P10,R10,M12,B13,P13,E14
GND
R12
ON/OFF*
R13
RESET*
B15
USB_D+
C15
USB_D-
A13
VUSB
N15
C103/TXD
M15
C104/RXD
L14
C105/RTS
P15
C106/CTS
D15
TXD_AUX
E15
RXD_AUX
D13
VDD_IO1
E13
VIO1_1V8