PCF85063ATLSLASH1 datasheet(18/55 Pages) NXP

18 / 55 page

NXP Semiconductors

PCF85063A

Tiny Real-Time Clock/calendar with alarm function and I2C-bus

7.2.4 Register RAM_byte

The PCF85063A provides a free RAM byte, which can be used for any purpose, for example, status byte of the

system.

Bit

Symbol

Value

Description

7 to 0

B[7:0]

0000 0000[1] to

1111 1111

RAM content

Table 17. RAM_byte - 8-bit RAM register (address 03h) bit description

[1]

Default value.

7.3 Time and date registers

Most of the registers are coded in the BCD format to simplify application use.

7.3.1 Register Seconds

Bit

Symbol

Value

Place value

Description

oscillator stop

clock integrity is guaranteed

1[1]

clock integrity is not guaranteed;

oscillator has stopped or has been

interrupted

6 to 4

0[1] to 5

ten’s place

3 to 0

SECONDS

0[1] to 9

unit place

actual seconds coded in BCD format, see

Table 19

Table 18. Seconds - seconds register (address 04h) bit description

[1]

Default value.

Upper-digit (ten’s place)

Digit (unit place)

Seconds value in

decimal

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

00[1]

Table 19. Seconds coded in BCD format

[1]

Default value.

PCF85063A

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

Product data sheet

Rev. 7.1 — 8 November 2023

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