User's Manual

GC864 Hardware User Guide
1vv0300733 Rev.12 – 2009-06-04
1.2 ELECTRICAL CHARACTERISTICS ..........................................................................................................................47
1.2.1 Input Lines Characteristics...................................................................................................................47
1.2.2 Output Lines Characteristics ................................................................................................................48
11. GENERAL PURPOSE I/O ............................................................................................................. 50
11.1. GPIO LOGIC LEVELS ..............................................................................................................................52
11.2. USING A GPIO PAD AS INPUT ................................................................................................................52
11.3. USING A GPIO PAD AS OUTPUT .............................................................................................................53
11.4. USING THE RF TRANSMISSION CONTROL GPIO4 .......................................................................................53
11.5. USING THE RFTXMON OUTPUT GPIO5 ...................................................................................................53
11.6. USING THE ALARM OUTPUT GPIO6 ..........................................................................................................54
11.7. USING THE BUZZER OUTPUT GPIO7.........................................................................................................54
11.8. MAGNETIC BUZZER CONCEPTS ................................................................................................................55
11.8.1. Short Description...........................................................................................................................55
1.2.1 Frequency Behavior ..............................................................................................................................56
11.8.2. Power Supply Influence.................................................................................................................56
11.8.3. Warning..........................................................................................................................................56
11.8.4. Working Current Influence............................................................................................................57
11.9. USING THE TEMPERATURE MONITOR FUNCTION.........................................................................................57
11.9.1. Short Description...........................................................................................................................57
11.9.2. Allowed GPIO .................................................................................................................................57
11.10. INDICATION OF NETWORK SERVICE AVAILABILITY........................................................................................58
11.11. RTC BYPASS OUT ..................................................................................................................................59
11.12. VAUX1 POWER OUTPUT .........................................................................................................................60
12. DAC AND ADC SECTION ............................................................................................................. 61
12.1. DAC CONVERTER ..................................................................................................................................61
12.1.1. Description.....................................................................................................................................61
12.1.2. Enabling DAC.................................................................................................................................61
12.1.3. Low Pass Filter Example...............................................................................................................62
12.2. ADC CONVERTER ..................................................................................................................................62
12.2.1. Description.....................................................................................................................................62
12.2.2. Using ADC Converter.....................................................................................................................62
13. MOUNTING THE GC864-QUAD/PY ON THE BOARD ..................................................................... 63
13.1.1. Debug of the GC864-QUAD/PY in Production ...............................................................................64
14. PACKING SYSTEM ...................................................................................................................... 65
15. CONFORMITY ASSESSMENT ISSUES .......................................................................................... 66
16. SAFETY RECOMMENDATIONS .................................................................................................... 68
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