SH7261 datasheet(699/1348 Pages) RENESAS

Part #	SH7261

Description	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

PDF	1348 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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699 / 1348 page

Section 15 Realtime Clock (RTC)

Rev. 2.00 Sep. 07, 2007 Page 667 of 1312

REJ09B0320-0200

15.5.5

Procedure for Setting the 30-Second Adjustment Function

Figure 15.7 shows the procedure for setting the 30-second adjustment function.

Clear the START bit in RCR2 to 0.

The order is irrelevant.

For the respective counters, read out each

value and then write it back.

Stop clock

Set minutes, hours, date, day

of the week, month, and year

Set ADJ bit

Start clock

Set the ADJ bit in RCR2 to 1.

Set the START bit in RCR2 to 1.

Figure 15.7 Procedure for Setting the 30-Second Adjustment Function

To use the 30-second adjustment function, the minutes, hours, date, day of the week, month, and

year counters need to be written to. Thus, after clearing the START bit in RCR2 and reading out

the minutes, hours, date, day of the week, month, and year counters and then writing the read

values back, set the ADJ bit in RCR2 to 1. After the 30-second adjustment, set the START bit in

RCR2 to 1 to start the clock operation.

SH7261 Datasheet(PDF) 699 Page - Renesas Technology Corp