RV2123C2 Datasheet, PDF (1/1 Pages) Golledge Electronics Ltd – Real Time Clock - Low Power

Real Time Clock - Low Power
5.20
(max)
3.40
(max)
1.20
(max)
SOLDER PAD LAYOUT
0.90
10
6
2.20
1
5
1.00
0.40
0.60
1.00
TOP VIEW
PAD CONNECTION
PAD CONNECTION
1 Supply (VDD)
6 Ground (VSS)
2 Frequency output (CLKOUT) 7 Chip enable (CE)
3 Serial clock input (SCL)
8 Interrupt output (/INT)
4 Serial data in (SDI)
9 Not connected
5 Serial data out (SDO)
10 CLK output enable (CLKOE)
Features
 ^{Ultra low power consumption}
 ^{Compliant with 4-wire SPI-Bus}
 ^{Time keeping mode down to 1.1 V}
 ^{Frequency-offset trimming register}
 ^{Programmable alarm, timer and interrupt}
Block Diagram
RV2123C2
Specifications
Parameters
Frequencies (programmable):
32.768kHz ~ 1Hz
Frequency tolerance:
±10ppm
±20ppm
Other
Product
RV2123C2




Turnover temperature (T₀):
+25°C ±5°C

Frequency / temp coefficient:
-0.035ppm/°C² ±10%

Operating temperature range:
-40 to +85°C

Storage temperature range:
-55 to +125°C

Supply voltage (V_DD):
SPI bus active 1.6 ~ 5.5V

Timekeeping mode 1.1 ~ 5.5V

Supply current (during access):
30/80μA typ/max (fscl=1MHz V_DD=3V)

250/400μA typ/max (fscl=4.5MHz V_DD=3V)

Supply current (time-keeping):
130/180nA typ/max (fscl=0Hz, V_DD=3V)

110/160nA typ/max (fscl=0Hz, V_DD=1V)

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

 Standard.  Optional - Please specify required code(s) when ordering
Option
Codes
A
B
specify
Ordering Information
Product + option code
eg: RV2123C2/B ±20ppm
Option code X (eg RV2123C2/X) denotes a custom spec.
 Available on T&R - 1k or 5k pcs per reel
 Evaluation / development board & manual available on request
Description
This RTC IC has been specially designed to achieve an ultra-low power
consumption of typically 130nA @ V_DD 3.0V in time-keeping mode.
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.
 Manufactured by Micro Crystal
 Stocked & distributed by Golledge
Tel: [phone]
21 Nov 2012
Fax: [phone]
E-mail: [e-mail]
Web: www.golledge.com