SH7713 datasheet(553/904 Pages) RENESAS

553 / 904 page

Section 15 Realtime Clock (RTC)

Rev.1.50 Aug. 30, 2006 Page 513 of 860

REJ09B0288-0150

Bit

Bit Name

Initial Value

R/W

Description

7 to 5



All 0

Reserved

These bits are always read as 0. The write value

should always be 0.



R/W

Counter for 10-unit of month in the BCD-code.

The range can be set from 0 to 1 (decimal).

3 to 0



R/W

Counter for 1-unit of month in the BCD-code.

The range can be set from 0 to 9 (decimal).

15.3.8

Year Counter (RYRCNT)

RYRCNT is used for setting/counting in the BCD-coded year section. The 4 digits of the year are

displayed. The count operation is performed by a carry for each year of the month counter.

The range for year which can be set is 0000 to 9999 (decimal). Errant operation will result if any

other value is set. Carry out write processing after stopping the count operation with the START

bit in RCR2 or using a carry flag.

RYRCNT is a 16-bit readable/writable register and not initialized by a power-on reset or manual

reset, or in standby mode.

Leap years are recognized by dividing the year counter value by 4 and obtaining a fractional result

of 0. The year counter value of 0000 is included in the leap year.

Bit

Bit Name

Initial Value

R/W

Description

15 to 12



R/W

Counter for 1000-unit of year in the BCD-code.

The range can be set from 0 to 9 (decimal)

11 to 8



R/W

Counter for 100-unit of year in the BCD-code.

The range can be set from 0 to 9 (decimal).

7 to 4



R/W

Counter for 10-unit of year in the BCD-code.

The range can be set from 0 to 9 (decimal).

3 to 0



R/W

Counter for 1-unit of year in the BCD-code.

The range can be set from 0 to 9 (decimal).

SH7713 Datasheet(PDF) 553 Page - Renesas Technology Corp

SH7713 Datasheet(HTML) 553 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL