Standalone with SDIO and UART Interfaces

Part No

Product

See Last Page

LM832

Pin Assignments

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

Signal

CLK_32KHz

GPIO_1

SDIO_CLK

SDIO_DATA_2

SDIO_CMD

SDIO_DATA_0

SDIO_DATA_3

SDIO_DATA_1

VDDIO

WL_HOST_WAKE

WL_REG_ON

BT_REG_ON

GND

VBAT

GND

BT_UART_RTS

BT_UART_TXD

BT_UART_CTS

BT_UART_RXD

BT_DEV_WAKE

BT_HOST_WAKE

Type

Input

I/O

Input

I/O

I/O

I/O

I/O

I/O

Input

I/O

Input

Input

Power

Power

Power

Output

Output

Input

Input

I/O

I/O

LM832

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LM832 WiFi and Bluetooth® Dual Mode Combi Module

Description

External sleep clock input (32.768 kHz). If an external 32.768 kHz clock cannot be

provided, pull this pin low. However, BLE will be always on and cannot enter deep sleep.

Programmable GPIO pins

SDIO clock input

SDIO data line 2. Also used as a strapping option.

SDIO command line

SDIO data line 0

SDIO data line 3

SDIO data line 1

VDDIO input supply. Connect to VDDIO.

Programmable GPIO pins. This pin becomes an output pin when it is used as

WLAN_HOST_WAKE/out-of-band signal.

Used by PMU to power up or power down the internal regulators used by the WiFi

section. Also, when deasserted, this pin holds the WiFi section in reset. This pin has an

internal 200 k pull-down resistor that is enable by default. It can be disabled through

programming.

Used by PMU to power up or power down the internal regulators used by the Bluetooth

section. Also, when deasserted, this pin holds the Bluetooth section in reset. This pin has

an internal 200 k pull-down resistor that is enable by default. It can be disabled through

programming.

Ground

VBAT input power supply

Ground

UART request-to-send. Active-low request-to-send signal for the HCI UART interface.

UART serial output. Serial data output for the HCI UART interface.

UART clear-to-send. Active-low clear-to-send signal for the HCI UART interface.

UART serial input. Serial data input for the HCI UART interface.

DEV_WAKE or general-purpose I/O signal

HOST_WAKE or general-purpose I/O signal