Datasheet
PCF85063TP All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3 — 11 July 2013 9 of 47
NXP Semiconductors
PCF85063TP
Tiny Real-Time Clock/calendar
8.2.1.3 Software reset
A reset is automatically generated at power-on. A reset can also be initiated with the
software reset command. Software reset command means setting bits 6, 4, and 3 in
register Control_1 (00h) logic 1 and all other bits logic 0 by sending the bit sequence
01011000 (58h), see Figure 6
.
In reset state all registers are set according to Table 8 and the address pointer returns to
address 00h.
The PCF85063TP resets to:
Time — 00:00:00
Date — 20000101
Weekday — Saturday
Fig 6. Software reset command
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Table 8. Register reset values
Address Register name Bit
7 6 5 4 3 2 1 0
00h Control_1 00000000
01h Control_2 00000000
02h Offset 00000000
03h RAM_byte 00000000
04h Seconds 10000000
05h Minutes 00000000
06h Hours 00000000
07h Days 00000001
08h Weekdays 00000110
09h Months 00000001
0AhYears 00000000