---
name: "pcaled"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/pcaled"
---

# pcaled(4)

Philips PCA9532/PCA9552 GPIO LED dimmer

## NAME

**pcaled** – Philips PCA9532/PCA9552 GPIO LED dimmer

## SYNOPSIS

**pcaled\* at iic?** **gpio\* at pcaled?**

## DESCRIPTION

The **pcaled** driver provides support for the Philips PCA9532 and PCA9552 GPIO controllers which are specifically optimized to dim LEDs in 256 discrete steps.

## SEE ALSO

[gpio(4)](/gpio/4.md), [iic(4)](/iic/4.md), [intro(4)](/intro/4.md), [gpioctl(8)](/gpioctl/8.md)

## HISTORY

The **pcaled** driver first appeared in OpenBSD 4.0.

## AUTHORS

The **pcaled** driver was written by Dale Rahn ⟨*drahn@openbsd.org*⟩.