WILCS02 datasheet(14/71 Pages) MICROCHIP

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WILCS02IC and WILCS02 Family

Device Overview

Data Sheet

DS70005557C - 14

Table 2-2.

WILCS02 Module Pinout Table (continued)

Pin Number

Pin Name

Pin Type

Pin Description

SD_CLK/UART1_RX(4)

SDIO, Clock

Connect to the SDIO clock of the host device.

Used for external antenna calibration

Connect this signal to a test point or a pin header.

VDD

VDD power supply (3.0-3.6V)

RTCC_OSC_IN/

PTA_BT_ACTIVE(1)(3)

32.768 KHz RTCC Oscillator input

PTA interface, Bluetooth Coexistence device active indication

input to WILCS02

RTCC_OSC_OUT(3)

32.768 KHz RTCC Oscillator output

VDDIO

I/O power supply (3.0-3.3V)

PMU Output Test point: 1.5V(2)

—

No connection

DFU_TX/STRAP2

Device Firmware Update, transmit signal

Host interface configuration, Strapping2 pin. Connect to a

pulled-high resistor of 10K for future upgrades.

UART2_TX

UART2 transmit signal for the firmware log.

UART setting: 460,800 baud, 8N1 and no flow control

GND

Ground

GND Paddle

Thermal ground paddle

Notes:

1. The WILCS02 Module can support either RTCC_OSC_IN or PTA_BT_ACTIVE functionality at a time, so, either the RTCC or

PTA feature can be used.

2. Do not connect any external 1.5V supply.

3. Current firmware does not support the RTCC Oscillator function; it is recommended to have an option to mount the

RTCC Oscillator in the design to upgrade with the future version of firmware releases.

4. For more details, refer to the WILCS02 Module External Antenna Calibration Guide (DS50003751)

5. Do not leave this pin unconnected. Follow as described in the Pin Description column for future upgrades.

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