描述 Description

The AT8593 is a CMOS clock/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 32.768kHz oscillator circuit and the first 8 bytes of RAM are used for the clock/calendar and counter functions. The next 8 bytes may be programmed as alarm registers or used as free RAM space

特性 Features

? I2C-bus interface operating supply voltage: 2.5 to 6.0V
? Clock operating supply voltage (Tamb=0 to +70oC): 1.0 to 6.0V
? 8 bytes scratchpad RAM (when alarm not used)
? Data retention voltage: 1.0 to 6.0V
? External input resets I2C interface (only)
? Operating current (fscl=0 Hz, 32kHz time base, VDD=2.0V): typ. 1μA
? Clock function with four year calendar
? Universal timer with alarm and overflow indication
? 24 or 12 hour format
? 32.768kHz or 50 Hz time base
? Serial input/output bus (I2C-bus)
? Automatic word address incrementing
? Programmable alarm, timer and interrupt function
? Space-saving SO8 package available
? Slave address:

---READ A3

---WRITE A2