Data Sheet

Contents
1. Product Instruction 3
1.1 Model Classification 3
1.2 Key Features 4
1.3 Applications 5
1.4 Product Specifications 6
2. Circuit Design 8
2.1 Block Diagram 8
2.2 Schematic 9
2.3 Reference Circuitry10
2.3.1 DC/DC regulator setup 10
2.3.2 External 32.768 kHz crystal 11
3. Mechanical specifications 12
3.1 Module Mechanical Dimensions 12
3.2 Recommended PCB land pads13
4 Pin Assignment 14
5. Mounting Suggestion 17
6. Cautions 20
6.1 Reflow Soldering 20