PCF85263AT/AJ View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCF85263AT/AJ
NXP Semiconductors.
'PCF85263AT/AJ' PDF : 100 Pages View PDF
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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