Product details
The PCA9685 is a 16-channel, 12-bit PWM/servo driver with an I2C interface. You want to create a fun robot, possibly a hexapod walker, or perhaps just a dynamic work of art. Or perhaps you want to use accurate PWM output to operate several LEDs. You become aware that your microcontroller only has a certain number of PWM outputs. Purchase this convenient PWM and servo driver breakout. As soon as we saw this chip, we saw what a great addition it would be. Control 16 free-running PWM outputs using just two pins! Even better, you can link 62 breakouts together to control up to 992 PWM outputs (which would be just wonderful). It is a PWM driver that is I2C-controlled and has a built-in clock. This indicates that it is entirely free-operating and does not require constant signal transmission like the TLC5940 series does, freeing up your microcontroller. It is 5V compliant, allowing you to securely drive up to 6V outputs while controlling it from a 3.3V microcontroller (useful for controlling white or blue LEDs with 3.4+ forward voltages). There are 6 address select pins, allowing for the wiring of up to 62 of them on a single I2C bus for a total of 992 outputs. Adjustable-frequency PWM with 12-bit resolution for each output and a maximum of 1.6 KHz; for servos, this equates to a resolution of around 4 u at a 60 Hz update rate. Push-pull or open-drain output that is configurable Pin for output enables you to rapidly turn off all of the outputs. This wonderful chip was packaged inside a breakout board with a few pleasant additions. Power input terminal block (or use the 0.1″ breakouts on the side) protection against reverse polarity at the terminal block input Powerful green LED 16 servos can be connected simultaneously using 3 pin connections in groups of 4 (servo plugs are slightly wider than 0.1″; therefore, only 4 can be stacked next to each other on a 0.1″ header).
Specifications:-
- Operating voltage range: 2.3V to 5.5V
- Low standby current
- 5.5V tolerant inputs
- Software reset feature (SWRST Call) allows the device via I2C bus reset
- 25MHz internal oscillator requires no external components
- The maximum allowable 50MHz external clock input
- Internal power-on reset
- In the SDA / SCL inputs with noise filter
- Output pin has edge generation rate control
- No glitches on power-up (glitch) output
- Hot-Access
- Can operate at minus 40 degrees Celsius to 85 degrees Celsius environment
- ESD protection exceeds 2000V HBM / JESD22-A114,200V MM / JESD22-A115 and 1000V CDM / JESD22-C101
- JEDEC standard JESD78 lockout exceed 100mA test
- Diamensions(LxWxH):62.4×25.7x2mm
- Weight: 12g.
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