1.

General description

organized as 256 words by 8 bits. Addresses and data are transferred serially via the

automatically after each written or read data byte. Address pin A0 is used for

programming the hardware address, allowing the connection of two devices to the bus

without additional hardware.

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. The remaining 240 bytes are free RAM locations.

2.

Features and benefits

Clock operating supply voltage 1.0 V to 6.0 V at 0

°Cto+70 °C

240

× 8-bit low-voltage RAM

Data retention voltage: 1.0 V to 6.0 V

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

Automatic word address incrementing

Programmable alarm, timer, and interrupt function

Slave addresses: A1h or A3h for reading, A0h or A2h for writing

PCF8583

Clock and calendar with 240 x 8-bit RAM

Rev. 06 — 6 October 2010

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 14.