●Overview
●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.
●MoreLess
●## 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 ℃ to +70 ℃
● 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 μA
● Clock function with four year calendar
● Universal timer with alarm and overflow indication
● 24 hour or 12 hour format
● 32.768 kHz or 50 Hz time base
● Serial input and output bus (I²C-bus)
● Automatic word address incrementing
● Programmable alarm, timer, and interrupt function
● Space-saving SO8 package available
● Slave addresses: A3h for reading, A2h for writing
●## Features
