- You have no items in your shopping cart
- Subtotal: ₦0.00
PCF8574P
₦1,600.00
Description:
The PCF8574P is an 8-bit remote I/O expander for the I2C-bus interface. It allows microcontrollers or other devices with limited GPIO pins to expand their I/O capabilities using the I2C communication protocol. Each PCF8574P device provides 8-bit parallel I/O expansion with bi-directional operation and can be cascaded to provide additional I/O ports.
Key Features:
- 8-bit I/O expander for I2C-bus applications
- Cascadable for up to 8 devices on a single bus
- Bi-directional data transfer via I2C-bus
- Input/output configuration controlled by I2C
- Low standby current consumption: typically 1 µA
- Operating voltage range: 2.5V to 6V
- Internal power-on reset
- 100 kHz and 400 kHz I2C-bus compatibility
Technical Specifications:
- Package Type: DIP-16
- Supply Voltage Range: 2.5V to 6V
- Operating Temperature Range: -40°C to +85°C
- Maximum I2C-bus frequency: 400 kHz
- I2C-bus address range: 8 selectable addresses (A0, A1, A2 pins)
- Dimensions: 19.3 mm x 6.35 mm x 3.3 mm
- Weight: 1.02 g
Applications:
- GPIO Expansion: Expands the number of I/O pins available to microcontrollers and systems.
- Keypad Interface: Interfaces with matrix keypads through simple I/O configuration.
- LED Display Control: Controls LED matrices or segments through simple I/O operations.
- Sensor Interface: Interfaces with digital sensors and actuators via the I2C bus.
- Embedded Systems: Used in various embedded applications requiring additional I/O ports.
Datasheet:
For detailed technical information, refer to the PCF8574P Datasheet.
Category: I/O Expanders / I2C-bus Interface
Out of stock
The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I²C‑bus (serial clock (SCL), serial data (SDA)).
The devices consist of eight quasi-bidirectional ports, 100 kHz I²C‑bus interface, three hardware address inputs and interrupt output operating between 2.5 V and 6 V. The quasi-bidirectional port can be independently assigned as an input to monitor interrupt status or keypads, or as an output to activate indicator devices such as LEDs. System master can read from the input port or write to the output port through a single register.
The low current consumption of 2.5 μA (typical, static) is great for mobile applications and the latched output ports directly drive LEDs.
The PCF8574 and PCF8574A are identical, except for the different fixed portion of the slave address. The three hardware address pins allow eight of each device to be on the same I²C‑bus, so there can be up to 16 of these I/O expanders PCF8574/74A together on the same I²C‑bus, supporting up to 128 I/Os (for example, 128 LEDs).
The active LOW open-drain interrupt output (INT) can be connected to the interrupt logic of the microcontroller and is activated when any input state differs from its corresponding input port register state. It is used to indicate to the microcontroller that an input state has changed and the device needs to be interrogated without the microcontroller continuously polling the input register via the I²C‑bus.
The internal Power-On Reset (POR) initializes the I/Os as inputs with a weak internal pull-up 100 μA current source.
Features
Additional Information
| Weight | 0.0012 kg |
|---|
Be the first to review “PCF8574P”
You must be <a href="https://hub360.com.ng/my-account-3/">logged in</a> to post a review.
Reviews
There are no reviews yet.