User's Manual

GC864 Hardware User Guide
1vv0300874 Rev.0 – 2010-01-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved. Page 5 of 64
10.2.1. Input Lines Characteristics ...........................................................................................................43
10.2.2. Output Lines Characteristics.........................................................................................................44
11. GENERAL PURPOSE I/O ............................................................................................................. 46
11.1. GPIO LOGIC LEVELS ..................................................................................................................................47
11.2. USING A GPIO PAD AS INPUT ................................................................................................................48
11.3. USING A GPIO PAD AS OUTPUT .............................................................................................................48
11.4. USING THE RF TRANSMISSION CONTROL GPIO4 .......................................................................................48
11.5. USING THE RFTXMON OUTPUT GPIO5 ...................................................................................................48
11.6. USING THE ALARM OUTPUT GPIO6 ..............................................................................................................49
11.7. USING THE BUZZER OUTPUT GPIO7.........................................................................................................49
11.8. MAGNETIC BUZZER CONCEPTS ................................................................................................................50
11.8.1. Short Description...........................................................................................................................50
11.8.1 Frequency Behavior ............................................................................................................................51
11.8.2. Power Supply Influence.................................................................................................................51
11.8.3. Warning..........................................................................................................................................51
11.8.4. Working Current Influence............................................................................................................52
11.9. USING THE TEMPERATURE MONITOR FUNCTION.........................................................................................52
11.9.1. Short Description...........................................................................................................................52
11.9.2. Allowed GPIO .................................................................................................................................52
11.10. INDICATION OF NETWORK SERVICE AVAILABILITY........................................................................................53
11.11. RTC BYPASS OUT ..................................................................................................................................54
11.12. DAC CONVERTER ..................................................................................................................................55
11.12.1. Description.................................................................................................................................55
11.12.2. Enabling DAC.............................................................................................................................55
11.12.3. Low Pass Filter Example...........................................................................................................56
11.13. ADC CONVERTER ..................................................................................................................................56
11.13.1. Description.................................................................................................................................56
11.13.2. Using ADC Converter.................................................................................................................57
12. ASSEMBLY THE GC864-QUAD V2 / GC864-DUAL V2 ON THE BOARD .......................................... 58
12.1.1. Debug of the GC864-QUAD V2 / GC864-DUAL V2 in Production...................................................59
13. PACKING SYSTEM ...................................................................................................................... 60
14. CONFORMITY ASSESSMENT ISSUES .......................................................................................... 61
15. SAFETY RECOMMENDATIONS .................................................................................................... 63