SH7727 datasheet(16/1109 Pages) RENESAS

Part #	SH7727

Description	Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

PDF	1109 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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16 / 1109 page

Rev. 5.00 Dec 12, 2005 page xvi of lxxii

Page

Previous Version

Revised Version

469

16.2.15 RTC Control Register 1 (RCR1)

RCR1 is initialized to H'00 by a power-on

reset. By a manual reset, bits except the

CF flag are all initialized to 0, but the CF

flag is undefined. When using the CF flag, it

must be initialized beforehand. This register

is not initialized in standby mode.

RCR1 is an 8-bit read/write register. The

CIE, AIE, and AF bits are initialized by a

power-on reset or manual reset. However,

the value of the CF flag is undefined after a

power-on reset or manual reset. It must

therefore be initialized without fail before

use. This register is not initialized in

standby mode.

Bit:

—

Initial value:

R/W:

R/W

Bit:

—

Initial value:

—

R/W:

R/W

Bit 7—Carry Flag (CF):

Bit 7: CF

Description

No carry in R64CNT or RSECCNT.

Clearing condition: When 0 is written to CF

(Initial value)

Bit 7: CF

Description

No carry in R64CNT or RSECCNT.

Clearing condition: When 0 is written to CF

SH7727 Datasheet(PDF) 16 Page - Renesas Technology Corp

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