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您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24836 > 935289802118 (NXP SEMICONDUCTORS) LED DISPLAY DRIVER, PDSO28 PDF資料下載

參數(shù)資料

型號：	935289802118
廠商：	NXP SEMICONDUCTORS
元件分類：	顯示驅(qū)動(dòng)器
英文描述：	LED DISPLAY DRIVER, PDSO28
封裝：	4.40 MM, PLASTIC, MO-153, SOT361-1, TSSOP-28
文件頁數(shù)：	46/54頁
文件大小：	410K
代理商：	935289802118

NXP Semiconductors

PCA9685

16-channel, 12-bit PWM Fm+ I2C-bus LED controller

NXP B.V. 2009.

All rights reserved.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 16 July 2009

Document identifier: PCA9685_2

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

22. Contents

General description . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Ordering information . . . . . . . . . . . . . . . . . . . . . 3

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pinning information . . . . . . . . . . . . . . . . . . . . . . 5

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5

Functional description . . . . . . . . . . . . . . . . . . . 6

Device addresses . . . . . . . . . . . . . . . . . . . . . . . 6

Regular I2C-bus slave address . . . . . . . . . . . . . 6

LED All Call I2C-bus address . . . . . . . . . . . . . . 7

LED Sub Call I2C-bus addresses . . . . . . . . . . . 7

Software Reset I2C-bus address . . . . . . . . . . . 8

Control register . . . . . . . . . . . . . . . . . . . . . . . . . 8

Register denitions . . . . . . . . . . . . . . . . . . . . . . 9

Mode register 1, MODE1 . . . . . . . . . . . . . . . . 13

Restart mode . . . . . . . . . . . . . . . . . . . . . . . . . 14

Mode register 2, MODE2 . . . . . . . . . . . . . . . . 15

LED output and PWM control . . . . . . . . . . . . . 15

ALL_LED_ON and ALL_LED_OFF control. . . 24

PWM frequency PRE_SCALE . . . . . . . . . . . . 24

SUBADR1 to SUBADR3, I2C-bus

subaddress 1 to 3 . . . . . . . . . . . . . . . . . . . . . . 25

ALLCALLADR, LED All Call I2C-bus

address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Active LOW output enable input . . . . . . . . . . . 26

Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 26

Software reset. . . . . . . . . . . . . . . . . . . . . . . . . 27

Using the PCA9685 with and without

external drivers . . . . . . . . . . . . . . . . . . . . . . . . 28

Characteristics of the I2C-bus. . . . . . . . . . . . . 29

Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

START and STOP conditions . . . . . . . . . . . . . 29

System conguration . . . . . . . . . . . . . . . . . . . 29

Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 30

Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 31

Application design-in information . . . . . . . . . 34

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 37

Static characteristics. . . . . . . . . . . . . . . . . . . . 37

Dynamic characteristics . . . . . . . . . . . . . . . . . 39

Test information . . . . . . . . . . . . . . . . . . . . . . . . 42

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 43

Handling information. . . . . . . . . . . . . . . . . . . . 45

Soldering of SMD packages . . . . . . . . . . . . . . 45

Introduction to soldering. . . . . . . . . . . . . . . . . 45

Wave and reow soldering . . . . . . . . . . . . . . . 45

Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 45

Reow soldering. . . . . . . . . . . . . . . . . . . . . . . 46

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 47

Revision history . . . . . . . . . . . . . . . . . . . . . . . 48

Legal information . . . . . . . . . . . . . . . . . . . . . . 49

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 49

Denitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Contact information . . . . . . . . . . . . . . . . . . . . 49

Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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