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PCF8593 - Low-power Clock/Calendar

General Description

The PCF8593 is a CMOS1 clock and calendar circuit, optimized for low power consumption.

Addresses and data are transferred serially via the two-line bidirectional I2C-bus.

The built-in word address register is incremented automatically after each written or read data byte.

Key Features

  • I2C-bus interface operating supply voltage: 2.5 V to 6.0 V.
  • Clock operating supply voltage 1.0 V to 6.0 V at 0 C to +70 C.
  • 8 bytes scratchpad RAM (when alarm not used).
  • Data retention voltage: 1.0 V to 6.0 V.
  • External RESET input resets I2C interface only.
  • Operating current (at fSCL = 0 Hz, 32 kHz time base, VDD = 2.0 V): typical 1 A.
  • Clock function with four year calendar.
  • Universal timer with alarm and overflow indication.
  • 24 hour or 12 hour for.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PCF8593 Low power clock and calendar Rev. 5 — 24 January 2020 Product data sheet 1. General description The PCF8593 is a CMOS1 clock and calendar circuit, optimized for low power consumption. Addresses and data are transferred serially via the two-line bidirectional I2C-bus. The built-in word address register is incremented automatically after each written or read data byte. The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM are used for the clock, calendar, and counter functions. The next 8 bytes can be programmed as alarm registers or used as free RAM space. 2. Features and benefits  I2C-bus interface operating supply voltage: 2.5 V to 6.0 V  Clock operating supply voltage 1.0 V to 6.