Real Time Clock - Low Power

RV2123C2

Tel: +44 1460 256 100

Fax: +44 1460 256 101

E-mail: sales@golledge.com

Web: www.golledge.com

21 Nov 2012

Features

1.20

(max)

5.00

±0.02

3.20

±0.20

SOLDER PAD LAYOUT

TOP VIEW

2.20

0.60

1.00

0.90

0.40

1.00

PAD

1

2

3

4

5

CONNECTION

Supply (VDD)

Frequency output (CLKOUT)

Serial clock input (SCL)

Serial data in (SDI)

Serial data out (SDO)

PAD

6

7

8

9

10

CONNECTION

Ground (VSS)

Chip enable (CE)

Interrupt output (/INT)

Not connected

CLK output enable (CLKOE)

15

6

10

Option

Codes

RV2123C2

Product

Parameters

Product + option code

Option code X (eg RV2123C2/X) denotes a custom spec.

Ordering Information

Specifications

Block Diagram

This RTC IC has been specially designed to achieve an ultra-low power

consumption of typically 130nA @ V

The very small SMT ceramic-package combines the 32.768 kHz crystal unit

with the CMOS-based oscillator and real-time-clock circuitry. The calendar

function tracks year, month, date, and day-of-the-week with built-in

century and leap-year flags. The clock function tracks minute and second

in 24-hour format. Programmable alarm setting and universal timer

functions increase flexibility.

Description

Frequencies (programmable):

32.768kHz ~ 1Hz



Frequency tolerance:

±10ppm



A

±20ppm



B

Other



specify

Turnover temperature (T

+25°C ±5°C



Frequency / temp coefficient:



Operating temperature range:

-40 to +85°C



Storage temperature range:

-55 to +125°C



Supply voltage (V

SPI bus active 1.6 ~ 5.5V



Timekeeping mode 1.1 ~ 5.5V



Supply current (during access):

30/80μA typ/max (fscl=1MHz V



250/400μAtyp/max(fscl=4.5MHzV



Supply current (time-keeping):

130/180nA typ/max (fscl=0Hz, V



110/160nA typ/max (fscl=0Hz, V



Ageing:

±3ppm max first year



Shock and vibration resistance:

±5ppm, 5,000g, 0.3ms, ½ sine



±5ppm, 20g, 10.0 ~ 2,000Hz



Soldering condition:

Reflow, 260°C, 20 sec max



2011/65/EU