Datasheet

NXP Semiconductors

88W8977

2.4 GHz/5 GHz Dual-band 1x1 Wi-Fi 4

and Bluetooth

5 Combo SoC

Product short data sheet Rev. 1 — 13 July 2020

16 / 81

4.4 Pin description

4.4.1 Pin types

Table 2. Pin types

Pin type Description

I/O Digital input/output

I Digital input

O Digital output

A, I Analog input

A,O Analog output

NC No connect

DNC Do not connect

Power Power

Ground Ground

4.4.2 Pin states

The pin state information provided in this section is defined as follows:

• After firmware is downloaded, pads like GPIO and RF control are programmed in

functional mode per the functionality of the pins

• The Hardware State (HW State) at power-on may differ based on the pin muxing/strap

setting. The HW State is the pin state at power-on after boot code finishes and before

firmware download begins (firmware may change the pin state). For example, for

UART_RTSn and UART_SOUT, the boot code will enable the UART interface, making

the HW states output high and output low, respectively.

• PD State denotes the power-down state in default configuration. Many pads have

programmable power-down values, which can be set by firmware.

• PD Prog denotes whether the power-down state is programmable or not

• PU denotes whether the pull-up is programmable or not

• PD denotes whether the pull-down is programmable or not

• Pull-up and pull-down are only effective when the pad is in input mode.

• For SDIO, once the command is received from the host, the pads are configured

accordingly