Specifications

Appendix A Mechanical and Ordering Information 81

A.1 56-pin QFN Package Drawing 81

A.2 PCB Decal 82

A.3 Ordering Information 83

A.4 Device Package Marking 84

A.5 Tape and Reel Information 85

A.5.1 Tape Orientation and Dimensions 85

A.5.2 Reel Information: 180mm Reel 86

A.5.3 Reel Information: 330mm Reel 87

A.5.4 Dry Pack Requirement for Moisture Sensitive Material 87

Appendix B Development Support 88

B.1 Crystal Oscillators 88

B.1.1 Crystal Equivalent Circuit 88

B.1.2 Crystal Load Capacitance 88

B.1.3 Crystal ESR and Required Transconductance 89

B.2 32MHz Oscillator 90

B.3 32kHz Oscillator 92

B.4 JN5148 Module Reference Designs 94

B.4.1 Schematic Diagram 94

B.4.2 PCB Design and Reflow Profile 96