PC87413 datasheet(152/257 Pages) NSC

152 / 257 page

8.0 Real-Time Clock (RTC) (Continued)

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152

Revision1.2

8.3.7

Hours Register (HOR)

Power Well:VPP

Location: Index 04h

Type:

R/W

8.3.8

Hours Alarm Register (HORA)

Power Well:VPP

Location: 05h

Type:

R/W

8.3.9

Day-of-Week Register (DOW)

Power Well:VPP

Location: Index 06h

Type:

R/W

Bit

76543210

Name

Hours Data

Reset

00000000

Bit

Description

7-0

Hours Data. For 12-Hour mode, values may be 01 to 12 (AM) and 81 to 92 (PM) in BCD format or 01 to 0C

(AM) and 81 to 8C (PM) in Binary format. For 24-Hour mode, values may be 0 to 23 in BCD format or 00 to 17

in Binary format.

Bit

76543210

Name

Hours Alarm Data

Reset

00000000

Bit

Description

7-0

Hours Alarm Data. For 12-Hour mode, values may be 01 to 12 (AM) and 81 to 92 (PM) in BCD format or 01

to 0C (AM) and 81 to 8C (PM) in Binary format. For 24-Hour mode, values may be 0 to 23 in BCD format or 00

to 17 in Binary format.

When bits 7 and 6 are both set to one (‘11’), unconditional match is selected.

Bit

76543210

Name

Day-of-Week Data

Reset

00000000

Bit

Description

7-0

Day-of-Week Data. Values may be 01 to 07 in BCD format or 01 to 07 in Binary format.

PC87413 데이터시트(PDF) 152 Page - National Semiconductor (TI)

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