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PCA8581P/F6 from PHI,Philips

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PCA8581P/F6

Manufacturer: PHI, NXP

PCA8581;PCA8581C; 128 x 8-bit EEPROM with I²C-bus interface

Partnumber Manufacturer Quantity Availability
PCA8581P/F6,PCA8581PF6 PHI, NXP 2647 In Stock

Description and Introduction

PCA8581;PCA8581C; 128 x 8-bit EEPROM with I²C-bus interface The **PCA8581P/F6** from Philips is a versatile **I²C-bus compatible** CMOS integrated circuit designed for real-time clock (RTC) and memory applications. This low-power device integrates a **32 x 8-bit static RAM**, a **clock/calendar**, and an **alarm function**, making it suitable for timekeeping and data storage in embedded systems.  

Operating with a supply voltage ranging from **2.5V to 6V**, the PCA8581P/F6 ensures reliable performance across various power conditions. Its **I²C interface** allows seamless communication with microcontrollers, facilitating easy integration into digital systems. The built-in **oscillator circuit** supports an external 32.768 kHz quartz crystal for precise timekeeping, while the automatic leap-year correction enhances accuracy.  

Key features include **battery backup support**, ensuring uninterrupted operation during power loss, and a programmable alarm function for event-triggered interrupts. The device also offers **software clock calibration** to fine-tune timing accuracy.  

With its compact **DIP-8 package**, the PCA8581P/F6 is well-suited for industrial, automotive, and consumer electronics applications requiring reliable timekeeping and non-volatile memory. Its low standby current consumption further enhances its appeal for power-sensitive designs.  

Philips' PCA8581P/F6 remains a dependable choice for engineers seeking a robust, feature-rich RTC and memory solution.

Application Scenarios & Design Considerations

PCA8581;PCA8581C; 128 x 8-bit EEPROM with I²C-bus interface

Alternative Part Number

  • AT24C02 --: 2K-bit I2C serial EEPROM, functionally equivalent to the PCA8581 2K-bit I2C EEPROM, widely available and pin-compatible in DIP/SOIC packages.
  • 24LC02B --: 2K-bit I2C EEPROM with the same I2C interface and memory density as the PCA8581, a common drop-in replacement in most designs.
  • M24C02 --: 2K-bit I2C serial EEPROM offering equivalent storage and interface, suitable as an alternative to the PCA8581P/F6.
  • AT24C01A-10PU-2.7 --: 1Kbit I2C EEPROM in 8-pin DIP, functionally equivalent to the PCA8581 128x8 I2C EEPROM; widely available and pin-compatible with standard I2C EEPROM pinout.
  • 24LC01B-I/P --: 1Kbit I2C serial EEPROM in PDIP-8 with 2.5V-5.5V operation, direct functional replacement for the PCA8581P I2C EEPROM.
  • M24C01-WBN6P --: 1Kbit I2C EEPROM in DIP-8 from ST, same I2C interface and memory density, suitable drop-in alternative for the PCA8581P.

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