PCF8583

General description

The PCF8583 is a clock/calendar circuit based on a 2048-bit static CMOS RAM organized as 256 words by 8 bits. 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. 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 may be programmed as alarm registers or used as free RAM space. The remaining 240 bytes are free RAM locations.

Features

• I²C-bus interface operating supply voltage: 2.5 V to 6 ? Clock operating supply voltage (0 to +70 °C): 1.0 V to 6.0 V
• 240 x 8-bit low-voltage RAM
• Data retention voltage: 1.0 V to 6 V
• Operating current (at f_SCL = 0 Hz): max. 50 µA
• Clock function with four year calendar
• Universal timer with alarm and overflow indication
• 24 or 12 hour format
• 32.768 kHz or 50 Hz time base
• Serial input/output bus (I²C)
• Automatic word address incrementing
• Programmable alarm, timer and interrupt function
• Slave address:
  - READ: A1 or A3
  - WRITE: A0 or A2.

Products/packages

Pricing/ordering/availability

Applications

• Teletext/broadcast antiope
• Channel number display.

Block diagrams/pinning

Design support

Application Notes

AN10216_1; I2C manual (27-Mar-03)

AN10652_1; Improved timekeeping accuracy with PCF8563 using external temperature sensor (05-Nov-07)

AN96007_1; P83CE258 for High-End RDS/EON Car Radio System CCR520S V2.5 (01-Feb-96)

AN96022_1; High-End RDS/EON Car Radio System CCR520S (V2.6) (15-Mar-96)

AN_pcf8563-73-83-93_real_time_clock; Application note for the Philips Real Time Clocks PCF8563,73,83,93 (01-Sep-99)

Support Documents

75016543; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances (2008-06-01)

75013239; I 2 C Logic Selection Guide (2005-01-12)

75009895; I2C Bus Solutions - Industrial/Motor Control Applications: Numeric Control Machine (2002-06-01)

75007416; LCD drivers linecard (2001-11-23)

75016189; NXP I (2008-06-01)

75011325; Real-time clocks optimized for low power,high temperature or scratch-pad memory (2003-07-11)

UM10301_1; User Manual for NXP Real Time Clocks PCF85x3, PCA8565 and PCF2123, PCA2125 (2008-12-30)

75014395; Your connection to I 2 C,UART,CAN,and USB Connecting with Philips Wired Connectivity (2005-04-01)

Parametrics/similar products

Similar products
PCF8583 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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