WF200D datasheet(2/38 Pages) SILABS

2 / 38 page

Table of Contents

1. Features List ............................... 4

2. Ordering Guide .............................. 5

3. System Overview .............................. 6

3.1 Introduction ............................... 6

3.2 Wi-Fi Supported 2.4 GHz Bandwidth and Channels ................. 6

4. Electrical Specifications ........................... 7

4.1 Absolute Maximum Ratings.......................... 7

4.2 Operating Conditions ............................ 8

4.3 Power Consumption ............................ 9

4.4 RF Transmitter General Characteristics .....................10

4.4.1 RF Transmitter Characteristics .......................11

4.5 RF Receiver General Characteristics ......................12

4.5.1 RF Receiver Characteristics ........................13

4.6 Reference Oscillator and Clock Characteristics ...................15

4.6.1 Crystal Requirements for using Internal Oscillator .................16

4.6.2 External Oscillator Required Characteristics...................17

4.6.3 Low Power 32.768 kHz Clock Input Requirements ................17

4.7 Interface Terminal Characteristics .......................18

4.7.1 Supply Terminal Specifications .......................18

4.7.2 Digital I/O Terminal Specifications ......................18

4.8 Host Interface ..............................18

4.8.1 SPI Specification ............................20

4.8.2 SDIO Specification ...........................21

5. Typical Applications and Connections ..................... 22

5.1 Typical Application Circuit for SDIO Host Interface ..................22

5.2 Typical Application Circuit for SPI Host Interface ..................23

5.3

Power States and Low-Power Modes .....................24

5.4 RF Connections .............................24

5.4.1 Antenna Ports .............................24

5.4.2 Antenna Diversity ...........................24

5.4.3 FEM Support .............................24

5.5 Clocks .................................26

5.5.1 XTAL_I and XTAL_O connections for Crystal ..................26

5.5.2 XTAL_I and XTAL_O connections for TCXO ..................26

5.5.3 LP_CLK Port .............................26

5.6 Multi-Protocol Coexistence ..........................26

6. Pin Descriptions ............................. 27

7. Package Outline ............................. 29

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