PCF8583P

PCF8583P
Clock and calendar with 240 x 8-bit RAM, DIP8, NXP, RoHS

The PCF8583 is a clock and calendar chip, based on a 2048 bit static CMOS1 RAM organized as 256 words by 8 bits. Addresses and data are transmitted via the two-line bidirectional I 2 C-bus. The built-in word address register is incremented. Address pin A0 is used for busses without additional hardware.

The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM, 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.

Features:

• I2C-bus interface operating voltage: 2.5 V to 6 V
• Clocking supply supply voltage 1.0 V to 6.0 V at 0 ° C is +70 ° C
• 240 × 8-bit low-voltage RAM
• Data retention voltage: 1.0 V to 6.0 V
• Operating current (at fSCL = 0 Hz): max 50 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
• Slave addresses: A1h or A3h for reading, A0h or A2h for writing