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PCF8578HT/1

Name: PCF8578HT/1
Rating: 4.7 (12 reviews)

Real Time Clock PCF8578HT/TQFP64//1/REEL 13 Q1/T1 *STANDARD MARK

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概述

Description

The PCF8578HT/1 is a CMOS digital I2C interface compatible real-time clock (RTC) and calendar chip designed by NXP Semiconductors. It is primarily used in embedded systems for timekeeping applications. This chip features a clock calendar with an option for a century rollover and supports a wide range of time formats, including hours, minutes, seconds, day, date, month, and year.
Key features include low power consumption, an integrated oscillator, and the ability to maintain accurate time even during power outages, thanks to a backup battery input. The I2C interface allows for easy communication with microcontrollers, making it suitable for various applications such as consumer electronics, industrial devices, and IoT systems.
The device operates over a wide voltage range (typically 2.5V to 6V) and offers programmable alarms, enabling it to serve as a timer or scheduler. Its compact design and reliability make it a popular choice for developers looking to add timekeeping functionalities to their projects.

Features

The PCF8578HT/1 is a 16-segment LED driver designed for applications in display systems. Key features include:
1. Interface: I2C-compatible interface for easy communication with microcontrollers.
2. Segment Control: Drives up to 16 segments, allowing for complex character displays.
3. Memory: Includes internal RAM for segment data storage.
4. Multiple Displays: Supports cascading multiple devices for larger displays.
5. Brightness Control: Features an adjustable brightness level for LED segments.
6. Low Power Consumption: Optimized for energy efficiency, suitable for battery-operated devices.
7. Operating Voltage: Works within a voltage range of 3V to 5.5V.
8. Temperature Range: Operates reliably in a wide temperature range, typically from -40°C to +85°C.
9. Integrated Functions: Built-in functions for blinking and flashing segments can enhance display effects.
These features make the PCF8578HT/1 suitable for various applications, including consumer electronics, industrial displays, and automotive instrumentation.

Package

The PCF8578HT/1 is packaged in a TSSOP (Thin Shrink Small Outline Package) with a 20-pin configuration.

Pinout

The PCF8578HT/1 is an I2C bus-compatible CMOS device primarily used for 8-bit digital I/O and LED control in applications such as displays. It features 16 pins.
Here's a concise breakdown of the pin functions:
1. VDD - Power supply (2.5V to 6V).
2. VSS - Ground.
3. SCL - I2C clock line.
4. SDA - I2C data line.
5. RESET - Active LOW reset input.
6. INT - Interrupt output.
7. A0, A1, A2 - Address pins for I2C addressing (selectable).
8. P0 to P7 - 8-bit input/output port (general-purpose I/O).
9. VOUT - Voltage output for LED driver.
10. LED1 to LED8 - Outputs to drive up to 8 LEDs.
The device allows for easy integration into various applications requiring control of displays and peripherals via I2C communication.

Manufacturer

The PCF8578HT/1 is manufactured by NXP Semiconductors. NXP is a global semiconductor company that specializes in the design and manufacturing of advanced electronic components and solutions. It focuses on automotive, industrial, and Internet of Things (IoT) applications, providing a wide range of products that include microcontrollers, processors, sensors, and connectivity solutions. NXP is known for its innovations in secure connectivity and processing technology, serving various industries such as automotive, smart home, and mobile devices. The company was formed from the spinoff of Philips Semiconductor and has a strong presence in the semiconductor market.

Application

The PCF8578HT/1 is a versatile I2C bus-based digital I/O expander used in various applications, including industrial automation, embedded systems, and consumer electronics. It can control multiple LEDs, read switch inputs, and interface with sensors. Common uses include remote control devices, smart home systems, and robotics, where additional GPIOs are needed. Its compact design also makes it suitable for space-constrained applications.

Equivalent

The PCF8578HT/1 chip is a 16-channel I²C-bus I/O port expander. Equivalent products include the PCF8574, PCA9554, and MCP23017, which also provide I/O expansion via I²C. Ensure compatibility with your specific application in terms of voltage levels, number of channels, and communication protocols.