R2023K datasheet(11/50 Pages) RICOH

11 / 50 page

R2023K/T

Address Mapping

Address

D a t a

A3A2A1A0

0 0 0 0

Second Counter

*2)

S40

S20

S10

0 0 0 1

Minute Counter

M40

M20

M10

0 0 1 0

Hour Counter

H20

P/ A

H10

0 0 1 1

Day-of-week

Counter

0 1 0 0

Day-of-month

Counter

D20

D10

0 1 0 1

Month Counter and

Century Bit

19 /20

MO10

MO8

MO4

MO2

MO1

0 1 1 0

Year Counter

Y80

Y40

Y20

Y10

0 1 1 1

Oscillation

Adjustment

DEV

*4)

1 0 0 0

Alarm_W

(Minute Register)

WM40

WM20

WM10

WM8

WM4

WM2

WM1

1 0 0 1

Alarm_W

(Hour Register)

WH20

WP/ A

WH10

WH8

WH4

WH2

WH1

1 0 1 0

Alarm_W

(Day-of-week

WW6

WW5

WW4

WW3

WW2

WW1

WW0

1 0 1 1

Alarm_D

(Minute Register)

DM40

DM20

DM10

DM8

DM4

DM2

DM1

1 1 0 0

Alarm_D

(Hour Register)

DH20

DP/ A

DH10

DH8

DH4

DH2

DH1

1 1 0 1

1 1 1 0

Control Register 1

*3)

WALE

DALE

12 /24

CLEN2

TEST

CT2

CT1

CT0

1 1 1 1

Control Register 2

*3)

VDSL

VDET

XST

PON

*5)

CLEN1 CTFG

WAFG

DAFG

Notes:

* 1) All the data listed above accept both reading and writing.

* 2) The data marked with "-" is invalid for writing and reset to 0 for reading.

* 3) When the PON bit is set to 1 in Control Register 2, all the bits are reset to 0 in Oscillation Adjustment

* 4) When DEV=0, the oscillation adjustment circuit is configured to allow correction of a time count gain or loss

±1.5ppm. When DEV=1, the oscillation adjustment circuit is configured to allow correction of a time count

gain or loss up to or

±0.5ppm.

* 5) PON is a power-on-reset flag.

R2023K Datasheet(PDF) 11 Page - RICOH electronics devices division

R2023K Datasheet(HTML) 11 Page - RICOH electronics devices division

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