User guide

UC864-E/G/WD/WDU Hardware User Guide
1vv0300766a Rev.4
- 03/02/09
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 5 of 78
10.1. INPUT LINES (MICROPHONE) ............................................................................................................................. 51
10.1.1. Short Description ..................................................................................................................................... 51
10.1.2. Input Line
Characteristics........................................................................................................................ 51
10
.2. OUTPUT
LINES (SPEAKER)............................................................................................................................. 52
10.2.1. Short Description ..................................................................................................................................... 52
10.2.2. Out
put Lines Characteristics.................................................................................................................... 53
11
. GENERAL PURPOSE I/O................................................................................................................................. 54
11
.1. L
OGIC LEVEL SPECIFICATIONS........................................................................................................................... 56
11.2. U
SING A GPIO PAD AS INPUT ............................................................................................................................ 57
11.3. U
SING A GPIO PAD AS OUTPUT......................................................................................................................... 57
11.4. U
SING THE RF TRANSMISSION CONTROL GPIO4............................................................................................... 58
11.5. U
SING THE RFTXMON OUTPUT GPIO5 ........................................................................................................... 58
11.6. U
SING THE ALARM OUTPUT GPIO6................................................................................................................... 58
11.7. U
SING THE BUZZER OUTPUT GPIO7.................................................................................................................. 58
11.8. M
AGNETIC BUZZER CONCEPTS.......................................................................................................................... 60
11.8.1. Short Description ..................................................................................................................................... 60
11.8.2. Frequency
Behavior ................................................................................................................................. 60
11.8.3. Power Supply Influe
nce............................................................................................................................ 61
11.8.4. Working C
urrent Influence....................................................................................................................... 61
11
.9. U
SING THE TEMPERATURE MONITOR FUNCTION ............................................................................................... 61
11.9.1. Short Description ..................................................................................................................................... 61
11.9.2. Allowed GPI
O .......................................................................................................................................... 61
11
.10. I
NDICATION OF NETWORK SERVICE AVAILABILITY....................................................................................... 63
11.11. RTC
BYPASS OUT ......................................................................................................................................... 64
11.12. VAUX1
POWER OUTPUT .............................................................................................................................. 64
12. DAC AND ADC SECTION ................................................................................................................................ 65
12
.1. DAC
CONVERTER.............................................................................................................................................. 65
12.1.1. Description ............................................................................................................................................... 65
12.1.2. Enabling DAC
.......................................................................................................................................... 65
12.1.3. Low P
ass Filter Example.......................................................................................................................... 66
12
.2. ADC
CONVERTER.............................................................................................................................................. 66
12.2.1. Description ............................................................................................................................................... 66
12.2.2. Using A
DC Converter .............................................................................................................................. 66
12
.3. M
OUNTING UC864 ON YOUR BOARD ................................................................................................................. 67
12.3.1. Mounting UC864-E on the Board ............................................................................................................ 67
12.3.2. Mounting UC864-G/W
D/WDU on the Board........................................................................................... 68
12.3.3. Debug of
the UC864-E/G/WD/WDU in Production................................................................................. 69
12
.4. P
ACKING SYSTEM .............................................................................................................................................. 70
13. APPLICATION GUIDE FOR SIM INTERFACE........................................................................................... 72
14
. ESD PROTECTION ........................................................................................................................................... 73
14
.1. ESD
PROTECTION FOR SIM INTERFACE ............................................................................................................. 73
14.2. ESD
PROTECTION FOR USB INTERFACE ............................................................................................................ 74
14.3. ESD
PROTECTION FOR POWER SUPPLIES ........................................................................................................... 74
15. CONFORMITY ASSESSMENT ISSUES......................................................................................................... 75
16
. SAFETY RECOMMENDATIONS.................................................................................................................... 77
17
. DOCUMENT CHANGE LOG ........................................................................................................................... 78