User Manual

Jennic
JennicJennic
Jennic
4 JN-DS-JN5139 v1.5 © Jennic 2008
16.3.3 Comparator Event 49
16.4 Deep Sleep Mode 49
17 Electrical Characteristics 50
17.1 Maximum ratings 50
17.2 DC Electrical Characteristics 50
17.2.1 Operating Conditions 50
17.2.2 DC Current Consumption 51
17.2.3 I/O Characteristics 52
17.3 AC Characteristics 52
17.3.1 Reset 52
17.3.2 SPI Timing 53
17.3.3 Two-wire serial interface 54
17.3.4 Power Down and Wake-Up timings 54
17.3.5 32kHz Oscillator 55
17.3.6 16MHz Crystal Oscillator 55
17.3.7 Bandgap Reference 56
17.3.8 Analogue to Digital Converters 56
17.3.9 Digital to Analogue Converters 57
17.3.10 Comparators 58
17.3.11 Temperature Sensor 58
17.3.12 Radio Transceiver 59
Appendix A Mechanical and Ordering Information 63
A.1 56pin QFN Package Drawing 63
A.2 PCB Decal 64
A.3 Ordering Information 65
A.4 Device Package Marking 66
A.5 Tape and Reel Information 67
A.5.1 Tape Orientation and Dimensions 67
A.5.2 Reel Information: 7” Reel 68
A.5.3 Dry Pack Requirement for Moisture Sensitive Material 69
A.6 PCB Design and Reflow Profile 70
Appendix B Development Support 71
B.1 Crystal Oscillator 71
B.1.1 Crystal Equivalent Circuit 71
B.1.2 Crystal Load Capacitance 72
B.1.3 Crystal ESR and Required Transconductance 72
B.2 16MHz Oscillator 74
B.3 Applications Information 75
B.3.1 Typical Application Schematic 75
B.3.2 PCB Requirements 76
B.3.3 Supply Decoupling 77
B.3.4 Reference Oscillator Requirements 77
B.3.5 Reference Oscillator Layout Considerations 77
B.3.6 VCO Tune Circuit Component Specifications 77
B.3.7 VCO Tune Circuit Layout Considerations 78
B.3.8 Radio Front-End 78
B.3.9 Antennae 78
B.3.10 Ground Planes 78
B.3.11 Manufacturing Considerations 79