参数资料
型号: PCA9625D/S911,518
厂商: NXP Semiconductors
文件页数: 14/33页
文件大小: 0K
描述: IC LED DRIVER RGBA 32-SOIC
标准包装: 1,000
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: 1MHz
电源电压: 2.3 V ~ 5.5 V
输出电压: 24V
安装类型: 表面贴装
封装/外壳: 32-SOIC(0.295",7.50mm 宽)
供应商设备封装: 32-SO
包装: 管件
工作温度: -40°C ~ 85°C
其它名称: 935285147518
PCA9625D/S911-T
PCA9625D/S911-T-ND
NXP Semiconductors
PCA9625
16-bit Fm+ I 2 C-bus 100 mA 24 V LED driver
Once subaddresses have been programmed to their right values, SUBx bits need to be
set to logic 1 in order to have the device acknowledging these addresses (MODE1
register).
Only the 7 MSBs representing the I 2 C-bus subaddress are valid. The LSB in SUBADRx
register is a read-only bit (0).
When SUBx is set to logic 1, the corresponding I 2 C-bus subaddress can be used during
either an I 2 C-bus read or write sequence.
7.3.8 ALLCALLADR, LED All Call I 2 C-bus address
Table 12.
ALLCALLADR - LED All Call I 2 C-bus address register (address 1Bh) bit
description
Legend: * default value.
Address
Register
Bit
Symbol
Access Value
Description
1Bh
ALLCALLADR
7:1
AC[7:1]
R/W
1110 000*
ALLCALL I 2 C-bus
address register
0
AC[0]
R only
0*
reserved
The LED All Call I 2 C-bus address allows all the PCA9625s on the bus to be programmed
at the same time (ALLCALL bit in register MODE1 must be equal to 1 (power-up default
state)). This address is programmable through the I 2 C-bus and can be used during either
an I 2 C-bus read or write sequence. The register address can also be programmed as a
Sub Call.
Only the 7 MSBs representing the All Call I 2 C-bus address are valid. The LSB in
ALLCALLADR register is a read-only bit (0).
If ALLCALL bit = 0, the device does not acknowledge the address programmed in register
ALLCALLADR.
7.4 Active LOW output enable input
The active LOW output enable (OE) pin, allows to enable or disable all the LED outputs at
the same time.
? When a LOW level is applied to OE pin, all the LED outputs are enabled.
? When a HIGH level is applied to OE pin, all the LED outputs are high-impedance.
The OE pin can be used as a synchronization signal to switch on/off several PCA9625
devices at the same time. This requires an external clock reference that provides blinking
period and the duty cycle.
The OE pin can also be used as an external dimming control signal. The frequency of the
external clock must be high enough not to be seen by the human eye, and the duty cycle
value determines the brightness of the LEDs.
Remark: Do not use OE as an external blinking control signal when internal global
blinking is selected (DMBLNK = 1, MODE2 register) since it will result in an unde?ned
blinking pattern. Do not use OE as an external dimming control signal when internal global
dimming is selected (DMBLNK = 0, MODE2 register) since it will result in an unde?ned
dimming pattern.
PCA9625_2
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 15 January 2008
14 of 33
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