PCF8593

General description

The PCF8593 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 32.768 kHz 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.

Features

• I²C-bus interface operating supply voltage: 2.5 to 6.0 ? Clock operating supply voltage (Tamb =0 to +70°C): 1.0 to 6.0 V
• 8 bytes scratchpad RAM (when alarm not used)
• Data retention voltage: 1.0 to 6.0 V
• External RESET input resets I²C interface (only)
• Operating current (fscl = 0 Hz, 32 kHz time base, V_DD = 2.0 V): typ. 1 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-bus)
• Automatic word address incrementing
• Programmable alarm, timer and interrupt function
• Space-saving SO8 package available
• Slave address:
  - READ A3
  - WRITE 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)

IC12_97_ASS_I2C_ADDR_1; Assigned I 2 C-bus addresses General (1997-03-01)

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

IC12_97_I2C_ALLOCATION; I²C-bus allocation table General (1997-03-01)

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)

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
PCF8593 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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