PCF85363ATLSLASHA datasheet(60/86 Pages) NXP

60 / 86 page

NXP Semiconductors

PCF85363A

Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input,

and I2C-bus

9.3.1 Slave address

One I2C-bus slave address (1010 001) is reserved for the PCF85363A. The entire I2C-

bus slave address byte is shown in Table 64.

Slave address

Bit

MSB

LSB

R/W

Table 64. I2C slave address byte

After a START condition, the I2C slave address has to be sent to the PCF85363A device.

Slave address can also be written in a hexadecimal format:

• A2h - Write slave address

• A3h - Read slave address

10 Application design-in information

In this application, stop-watch mode is used to implement an elapsed time counter. The

TS pin is used with a mechanical switch to start and stop the time. Each time the time is

stopped, timestamp2 is loaded with the current time and an interrupt is generated on the

INTA pin.

sample

invert

mechanical

switch detector

vdd_int

TS pin

sample

clock, 16 Hz

TSL

aaa-010560

STOP

control

STOPM

Time

counter

stop

TSR2

load

TSR2

flag

INTA

gen.

INTA

VSS

Figure 34. Application example

PCF85363A

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

Product data sheet

Rev. 3.1 — 18 June 2021

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