PCF8593 - NXP

PCF8593 Low-power Clock/Calendar

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 f.

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 format
 32.768 kHz or 50 Hz time base
 Serial input and output bus (I2C-bus)
 Automatic word address incrementing
 Programmable alarm, .