WM8321 datasheet(23/253 Pages) WOLFSON

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Production Data

WM8321

PD, February 2012, Rev 4.0

7.5

GENERAL PURPOSE INPUTS / OUTPUTS (GPIO)

Unless otherwise noted: TJ = -40°C to +125°C; Typical values are at TJ = +25ºC

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

GPIO1, GPIO2, GPIO3, GPIO7, GPIO8, GPIO9

Input HIGH Level

VIH

0.75 x

VDD

Input LOW Level

VIL

0.25 x

VDD

Output HIGH Level

VOH

IOH = 1mA

0.8 x

VDD

Output LOW Level

VOL

IOL = -1mA

0.2 x

VDD

Pull-up resistance to VDD

RPU

GPn_PWR_DOM=0 and

DBVDD=1.8V

or GPn_PWR_DOM=1

180

kΩ

Pull-down resistance

RPD

180

kΩ

GPIO4, GPIO5, GPIO6, GPIO10, GPIO11, GPIO12

Input HIGH Level

VIH

0.85 x

VDD

Input LOW Level

VIL

0.2 x

VDD

Output HIGH Level

VOH

IOH = 1mA

0.75 x

VDD

Output LOW Level

VOL

IOL = -1mA

0.2 x

VDD

Pull-up resistance to VDD

RPU

GPn_PWR_DOM=0 and

DBVDD=1.8V

or GPn_PWR_DOM=1 and

PVDD=3.8V

180

kΩ

Pull-down resistance

RPD

180

kΩ

Notes:

‘VDD’ is the voltage of the applicable power domain for each pin (selected by the corresponding GPn_PWR_DOM register).

Pull-up / pull-down resistance only applies when enabled using the GPn_PULL registers.

Pull-up / pull-down resistors are disabled when the GPIO pin is tri-stated.

Pull-up / pull-down resistance may change with the applicable power domain (as selected by GPn_PWR_DOM).

WM8321 Datasheet(PDF) 23 Page - Wolfson Microelectronics plc

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