PCF85263ATL/A View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCF85263ATL/A

Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus

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NXP Semiconductors

PCF85263A

Tiny RTC with alarm, battery switch-over, and I2C-bus

8. Functional description

The PCF85263A contains 8-bit registers for time information, for timestamp information

and registers for system configuration. Included is an auto-incrementing register address,

an on-chip 32.768 kHz oscillator with integrated capacitors, a frequency divider which

provides the source clock for the Real-Time Clock (RTC) and calender, and an I2C-bus

interface with a maximum data rate of 400 kbit/s.

The built-in address register will increment automatically after each read or write of a data

byte. After register 2Fh, the auto-incrementing will wrap around to address 00h (see

Figure 6).

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Fig 6. Address register incrementing

All registers (see Table 5 on page 9, Table 6 on page 11, and Table 7 on page 13) are

designed as addressable 8-bit parallel registers although not all bits are implemented.

Figure 7 gives an overview of the address map.

PCF85263A

Product data sheet

Fig 7. Register map



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All information provided in this document is subject to legal disclaimers.

Rev. 4.1 — 27 November 2015

© NXP Semiconductors N.V. 2015. All rights reserved.

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