参数资料
型号: PCA9685PW/Q900,118
厂商: NXP Semiconductors
文件页数: 51/51页
文件大小: 0K
描述: IC PWM CTLR LED DVR 28TSSOP
产品培训模块: I²C Bus Fundamentals
标准包装: 1
拓扑: 开路漏极,PWM
输出数: 16
内部驱动器:
类型 - 主要: 背光,LED 闪烁器
类型 - 次要: RGBA
频率: 25MHz,50MHz
电源电压: 2.3 V ~ 5.5 V
输出电压: 5.5V
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 标准包装
工作温度: -40°C ~ 85°C
其它名称: 568-5931-6
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I 2 C-bus LED controller
22. Contents
1
2
3
4
5
6
6.1
6.2
7
7.1
7.1.1
7.1.2
7.1.3
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
Device addresses . . . . . . . . . . . . . . . . . . . . . . . 6
Regular I 2 C-bus slave address. . . . . . . . . . . . . 6
LED All Call I 2 C-bus address . . . . . . . . . . . . . . 7
LED Sub Call I 2 C-bus addresses . . . . . . . . . . . 7
17.1
17.2
17.3
17.4
18
19
20
20.1
20.2
20.3
20.4
21
22
Introduction to soldering. . . . . . . . . . . . . . . . .
Wave and reflow soldering. . . . . . . . . . . . . . .
Wave soldering . . . . . . . . . . . . . . . . . . . . . . .
Reflow soldering . . . . . . . . . . . . . . . . . . . . . .
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . .
Revision history . . . . . . . . . . . . . . . . . . . . . . .
Legal information . . . . . . . . . . . . . . . . . . . . . .
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information . . . . . . . . . . . . . . . . . . . .
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45
45
45
46
47
48
49
49
49
49
50
50
51
7.1.4
7.2
7.3
7.3.1
7.3.1.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.4
7.5
7.6
7.7
8
8.1
8.1.1
8.2
8.3
9
10
11
12
13
14
15
16
17
Software Reset I 2 C-bus address . . . . . . . . . . . 8
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 8
Register definitions . . . . . . . . . . . . . . . . . . . . . . 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, I 2 C-bus
subaddress 1 to 3 . . . . . . . . . . . . . . . . . . . . . . 25
ALLCALLADR, LED All Call I 2 C-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 I 2 C-bus . . . . . . . . . . . . 29
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
START and STOP conditions . . . . . . . . . . . . . 29
System configuration . . . . . . . . . . . . . . . . . . . 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
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
? NXP B.V. 2010.
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: 2 September 2010
Document identifier: PCA9685
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