PCA9531 查看數據表（PDF） - NXP Semiconductors.

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PCA9531

8-bit I2C-bus LED dimmer

NXP Semiconductors. 

NXP Semiconductors

4. Block diagram

PCA9531

8-bit I2C-bus LED dimmer

PCA9531

A0 A1 A2

SCL

SDA

INPUT

FILTERS

I2C-BUS

CONTROL

VDD

RESET

VSS

POWER-ON

RESET

OSCILLATOR

Only one I/O shown for clarity.

Fig 1. Block diagram of PCA9531

PRESCALER 0

REGISTER

PRESCALER 1

REGISTER

INPUT

REGISTER

LED SELECT (LSn)

REGISTER

0

1

PWM0

REGISTER

PWM1

REGISTER

BLINK0

BLINK1

LEDn

002aac522

PCA9531_6

Product data sheet

Rev. 06 — 19 February 2009

© NXP B.V. 2009. All rights reserved.

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