RX5C348A/B_95 查看數據表（PDF） - RICOH Co.,Ltd.

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RX5C348A/B_95

4-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICS WITH VOLTAGE MONITORING FUNCTION

RICOH Co.,Ltd. 

R×5C348A/B

2. Register Settings

2.1 Control Register 1 (at Address Eh)

D7

D6

D5

D4

D3

D2

D1

D0

WALE DALE 12/24 CLEN2*2 TEST

CT2

CT1

CT0 (For writing)

WALE DALE 12/24 CLEN2*2 TEST

CT2

CT1

CT0 (For reading)

0

0

0

0

0

0

0

0

Default settings*1

*1) Default settings: Default value means read/written values when the XSTP bit is set to “1” due to power-on from 0 volts or supply voltage drop.

*2) This bit name applies to the R×5C348A only. For the R×5C348B the bit name is SCRATCH3.

2.1-1 WALE and DALE

Alarm_W Enable Bit and Alarm_D Enable Bit

WALE, DALE

Description

Disabling the alarm interrupt circuit (under the control of the settings of the

0

Alarm_W registers and the Alarm_D registers).

(Default setting)

Enabling the alarm interrupt circuit (under the control of the settings of the

1

Alarm_W registers and the Alarm_D registers)

2.1-2 12/24

12/24

0

1

12-/24-hour Mode Selection Bit

Description

Selecting the 12-hour mode with a.m. and p.m. indications.

Selecting the 24-hour mode

(Default setting)

Setting the 12/24 bit to 0 and 1 specifies the 12-hour mode and the 24-hour mode, respectively.

Table of Time Digit Indications

24-hour mode

12-hour mode

00

12 (AM12)

01

01 (AM 1)

02

02 (AM 2)

03

03 (AM 3)

04

04 (AM 4)

05

05 (AM 5)

06

06 (AM 6)

07

07 (AM 7)

08

08 (AM 8)

09

09 (AM 9)

10

10 (AM10)

11

11 (AM11)

24-hour mode

12

13

14

15

16

17

18

19

20

21

22

23

12-hour mode

32 (PM12)

21 (PM 1)

22 (PM 2)

23 (PM 3)

24 (PM 4)

25 (PM 5)

26 (PM 6)

27 (PM 7)

28 (PM 8)

29 (PM 9)

30 (PM10)

31 (PM11)

*) Setting the 12/24 bit should precede writing time data.

10

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