User's Guide

UC864-E-AUTO / AWS-AUTO Hardware User Guide
1vv0300795 Rev.11 – 2010/11/18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 73 of 78
15.4. EMC recommendations
UC864-E-AUTO / AWS-AUTO signals are provided by some EMC protections. In any
case the accepted levels are different on the pins. The characteristics are described
in the following Table:
Pin
PinPin
Pin Signal
SignalSignal
Signal I/O
I/OI/O
I/O Function
FunctionFunction
Function Contact
ContactContact
Contact Air
AirAir
Air
Power Supply
Power SupplyPower Supply
Power Supply
1,2,3,4
1,2,3,41,2,3,4
1,2,3,4 VBATT - Main power supply
± 8KV ± 15KV
SIM Card Interface
SIM Card InterfaceSIM Card Interface
SIM Card Interface
18
1818
18 SIMVCC - External SIM signal – Power supply for the SIM
± 8KV ± 15KV
19
1919
19 SIMRST O External SIM signal – Reset
± 8KV ± 15KV
20
2020
20 SIMIO I/O External SIM signal - Data I/O
± 8KV ± 15KV
22
2222
22 SIMCLK O External SIM signal – Clock
± 8KV ± 15KV
Miscellaneous Fun
Miscellaneous FunMiscellaneous Fun
Miscellaneous Functions
ctionsctions
ctions
35
3535
35 USB_ID AI
Analog input used to sense whether a peripheral device is
connected
± 8KV ± 15KV
Miscellaneous Functions
Miscellaneous FunctionsMiscellaneous Functions
Miscellaneous Functions
48
4848
48 USB_VBUS AI Power supply for the internal USB transceiver.
± 8KV ± 15KV
50
5050
50 VAUX1 - Power output for external accessories
± 8KV ± 15KV
51, 52
51, 5251, 52
51, 52 CHARGE AI Charger input
± 8KV ± 15KV
53
5353
53 ON/OFF I Input command for switching power ON or OFF (toggle command).
± 8KV ± 15KV
54
5454
54 RESET I Reset input
± 8KV ± 15KV
55
5555
55 VRTC AO Power supply for RTC block
± 8KV ± 15KV
Antenna
AntennaAntenna
Antenna
PAD
PADPAD
PAD Antenna Pad AI Antenna pad for Rosenberger connector
± 8KV ± 15KV
All other pins have the following characteristics:
HBM JESD22-A114-B ± 2000 V
CDM JESD22-C101-C ± 500 V
The Board to Board connector has to be considered as NO TOUCH area.
Appropriate Series resistors has to be considered to protect the input lines from overvoltage.