16채널 I/O 확장 LED 드라이버 모듈 -PCA9532
(LED DRIVER 12 CLICK)
개요
- 본 제품은 16채널 I/O 확장 LED 드라이버 모듈 -PCA9532 입니다.
- LED를 디밍하는 작업에 최적화 된, I2C로 설정이 가능한 16비트 I/O 확장기 PCA9532 칩을 기반으로 디자인된 제품입니다.
- 256 RGB 스텝 디밍이 가능하며, 최대 16개의 LED 채널을 지원(채널당 25mA)합니다.
특징
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HOW DOES IT WORK?
LED Driver 12 Click as its foundation uses the PCA9532, a 16-bit I2C-configurable LED dimmer from NXP Semiconductors. The PCA9532 has two fully programmable PWM controllers used to control up to 16 LED channels, switching each of the LEDs ON and OFF independently. Each LED output, 16 LED drivers presented on two 1x8 male headers, with a maximum output current of 25mA per channel, has a programmable period ranging from 0.6Hz to 152Hz and a programmable duty cycle from 0 to 100%, which means that the LEDs can be set to blink steadily and visibly, or dimmed.
Any bits not used for controlling the LED channels can be used for General Purpose parallel Input/Output (GPIO) expansion, providing a simple solution when additional I/O is needed for some power switches, sensors, push-buttons, alarm monitoring, fans, or other applications.
LED Driver 12 Click communicates with MCU using the standard I2C 2-Wire interface that supports Standard-Mode (100 kHz) and Fast-Mode (400 kHz) operation. The PCA9532 has a 7-bit slave address with the first five MSBs fixed to 1100. The address pins A0, A1, and A2, are programmed by the user and determine the value of the last three LSBs of the slave address, which can be selected by onboard SMD jumpers labeled as ADDR SEL allowing selection of the slave address LSBs.
Alongside the internal Power-On Reset (POR) function, this board also has an active-low reset signal routed on the RST pin of the mikroBUS™ socket used to recover from a bus-fault condition. When this signal is asserted low, the PCA9532 resets its registers alongside with I2C state machine and deselects all channels.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type LED Drivers Applications Can be used for color mixing and backlight application for amusement products, LED status signalization, home automation projects, and many more On-board modules PCA9532 - 16-bit I2C-configurable LED dimmer from NXP Semiconductors Key Features Low power consumption, 16 channels, ON/OFF LED channels control, two selectable fully programmable blink rates, supports hot insertion, drive LEDs to 25mA, and more Interface I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V