Specifications

Wireless CPU
®
Q24 Series
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WM_PGM_Q24NG_PTS_001-005 November 20, 2007
3.8.1 General Description................................................................................. 33
3.8.2 SIM Card Holder ..................................................................................... 35
3.9 General Purpose Input/Output ........................................................................ 37
3.10 Activity Status Indication ................................................................................ 38
3.11 Analog to Digital Converter (ADC)................................................................... 39
3.12 Audio Interface ............................................................................................... 40
3.12.1 Microphone Inputs.................................................................................. 40
3.12.2 Speaker Outputs ..................................................................................... 43
3.13 Buzzer Output ................................................................................................ 45
3.13.1 Hardware Description ............................................................................. 45
3.14 Battery Charging Interface .............................................................................. 46
3.14.1 Hardware Description ............................................................................. 46
3.14.2 Temperature Monitoring ......................................................................... 47
3.14.3 Ni-Cd / Ni-Mh Charging Algorithm .......................................................... 48
3.14.4 Li-Ion Charging Algorithm....................................................................... 50
3.15 ON / ~OFF ...................................................................................................... 53
3.15.1 General Description................................................................................. 53
3.15.2 Operating Sequences.............................................................................. 54
3.16 BOOT (optional) .............................................................................................. 57
3.17 Reset Signal (~RST)........................................................................................ 57
3.17.1 General Description................................................................................. 57
3.17.2 Reset Sequence ...................................................................................... 59
3.18 External Interrupt (~INTR)............................................................................... 59
3.19 VCC Output .................................................................................................... 61
3.20 Real Time Clock Supply (VCC_RTC) ................................................................. 61
3.21 RF Interface .................................................................................................... 62
3.21.1 RF Connections....................................................................................... 62
3.21.2 RF Performance ...................................................................................... 63
3.21.3 Antenna Specifications ........................................................................... 64
4 Technical Specifications...................................................................................65
4.1 General Purpose Connector Pin-out Description.............................................. 65
4.2 I/O Circuit Diagram ......................................................................................... 69
5 Environmental Specifications ...........................................................................70
5.1 Environmental Qualifications .......................................................................... 71
5.2 Reflow Soldering ............................................................................................ 73
5.3 Conformance with ATEX 94/9/CE Directive ..................................................... 73
5.4 Mechanical Specifications............................................................................... 73
5.4.1 Physical Characteristics .......................................................................... 73
5.4.2 Mechanical Drawings ............................................................................. 73
6 Connector and Peripheral Device References....................................................75
6.1 General Purpose Connector Data Sheet .......................................................... 75