参数资料
型号: PCA9533DP/01,118
厂商: NXP Semiconductors
文件页数: 6/24页
文件大小: 0K
描述: IC LED DRIVER RGB 8-TSSOP
产品培训模块: LED Controllers
I²C Bus Fundamentals
标准包装: 1
拓扑: 开路漏极,PWM
输出数: 4
内部驱动器:
类型 - 主要: 背光,LED 闪烁器
类型 - 次要: RGB
频率: 400kHz
电源电压: 2.3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-TSSOP
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 825 (CN2011-ZH PDF)
配用: 568-4003-ND - DEMO BOARD LED DIMMER
568-3512-ND - DEMO BOARD UART TO I2C
其它名称: 568-3374-6
NXP Semiconductors
PCA9533
4-bit I 2 C-bus LED dimmer
6.3.4 PCS1 - Frequency Prescaler 1
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 152.
Table 8.
PSC1 - Frequency Prescaler 1 register description
Bit
Symbol
Default
7
PSC1[7]
0
6
PSC1[6]
0
5
PSC1[5]
0
4
PSC1[4]
0
3
PSC1[3]
0
2
PSC1[2]
0
1
PSC1[1]
0
0
PSC1[0]
0
6.3.5 PWM1 - Pulse Width Modulation 1
The PWM1 register determines the duty cycle of BLINK1. The outputs are LOW (LED on)
when the count is less than the value in PWM1 and HIGH (LED off) when it is greater. If
PWM1 is programmed with 00h, then the PWM1 output is always HIGH (LED off).
The duty cycle of BLINK1 = PWM1 / 256.
Table 9.
PWM1 - Pulse Width Modulation 1 register description
Bit
Symbol
Default
7
PWM1
[7]
1
6
PWM1
[6]
0
5
PWM1
[5]
0
4
PWM1
[4]
0
3
PWM1
[3]
0
2
PWM1
[2]
0
1
PWM1
[1]
0
0
PWM1
[0]
0
6.3.6 LS0 - LED selector
The LSn LED selector register determines the source of the LED data.
00 = output is set high-impedance (LED off; default)
01 = output is set LOW (LED on)
10 = output blinks at PWM0 rate
11 = output blinks at PWM1 rate
Table 10. LS0 - LED selector register bit description
Legend: * default value.
PCA9533_3
Register
LS0
Bit
7:6
5:4
3:2
1:0
Value
00*
00*
00*
00*
Description
LED3 selected
LED2 selected
LED1 selected
LED0 selected
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 27 April 2009
6 of 24
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