RV-3049 datasheet(11/65 Pages) MICROCRYSTAL

11 / 65 page

Micro Crystal

DTCXO Temperature Compensated Real Time Clock / Calendar Module

RV-3049

11/65

3.2. CONTROL PAGE REGISTER FUNCTION

3.2.1.CONTROL_1 (address 00h…bits description)

Address

Function

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

00h

Control_1

Clk/Int

TD1

TD0

SROn

EERE

TAR

Bit

Symbol

Value

Description

Reference

Clk/Int

Applies INT function on CLKOUT pin

See section 4.9.

Applies CLKOUT function on CLKOUT pin

TD1

Select Source Clock for internal Countdown Timer

See section 4.4.

TD0

SROn

Disables Self Recovery function

See section 4.8.

Enables Self Recovery function

EERE

Disables automatic EEPROM refresh every hour

See section 4.3.

Enables automatic EEPROM refresh every hour

TAR

Disables Countdown Timer auto-reload mode

See section 4.4.

Enables Countdown Timer auto-reload mode

Disables Countdown Timer

See section 4.4.

Enables Countdown Timer

Disables 1Hz Clock Source for Watch

See section 4.7.

Enables 1Hz Clock Source for Watch

3.2.2.CONTROL_INT (address 01h…bits description)

Address

Function

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

01h

Control_INT

SRIE

V2IE

V1IE

TIE

AIE

Bit

Symbol

Value

Description

Reference

7 to 5

unused

Unused

SRIE

Disables Self-Recovery INT

See section 4.8.

Enables Self-Recovery INT

V2IE

Disables VLOW2 INT; “Low Voltage 2 detection”

See section 4.1.2.

Enables VLOW2 INT; “Low Voltage 2 detection”

V1IE

Disables VLOW1 INT; “Low Voltage 1detection”

See section 4.1.2.

Enables VLOW1 INT; “Low Voltage 1detection”

TIE

Disables Countdown Timer INT

See section 4.4.1.

Enables Countdown Timer INT

AIE

Disables Alarm INT

See section 4.5.1.

Enables Alarm INT

Bit positions labelled as “

X” are not implemented and will return a “0” when read.

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