Datasheet

Real Time Clock - SPI Bus
RV3049C3
Specifications
2011/65/EU
Product
Parameters
3.70
(typ)
2.50
(typ)
0.90
(max)
SOLDER PAD LAYOUT
0.80
1
10
5
6
0.80
0.60
3.00
0.30
0.50
0.80
TOP VIEW
PAD
CONNECTION
PAD
CONNECTION
1
Clock output enable (CLKOE)
6
Ground (VSS)
2
Supply (VDD)
7
Interrupt output (INT)
3
Clock output (CLKOUT)
8
Chip select (CS)
4
Serial clock input (SCL)
9
Backup supply voltage
5
Serial data output (SDO)
10
Serial data input (SDI)
Option
Codes
RV3049C3
Frequencies (selectable):
32.768kHz, 1024Hz, 32Hz & 1Hz

Frequency tolerance @ 25°C:
±10ppm typ, ±20ppm max

Time accuracy:
±3ppm max (0.26s/day) @ 25°C
±6ppm max (0.52s/day), -40+85°C
±25ppm max (2.17s/day), -40+85°C
±8ppm max (0.70s/day), -40+125°C
±30ppm max (2.60s/day), -40+125°C





Operating temperature range:
-40 to +85°C

Extended op. temp range:
-40 to +125°C

Storage temperature range:
-55 to +125°C

Supply voltage (VDD):
SPI bus active 1.8 ~ 5.5V
Time-keeping mode 1.3 ~ 5.5V


Supply current (VDD=3.0V):
0.80μA typ, 1.0μA max

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

A
B
D
E
see above
 Standard.  Optional - Please specify required code(s) when ordering
Features
Ordering Information





Temperature compensated accuracy
Product + option code
eg: RV3049C3/B ±25ppm -40+85°C
Option code X (eg RV3049C3/X) denotes a custom spec.
AEC Q200 Rev C compliant
Compliant with 4-wire SPI-Bus
Backup battery input (internal switchover)
Programmable alarm, timer and interrupt
 Available on T&R - 1k or 3k pcs per reel.
 Evaluation / development board & manual available on request
Description
The RV3049C3 is a Real Time Clock Module with embedded crystal. This
RTC has a 4-wire serial interface (SPI-Bus) and offers temperature
compensated time. The STC (Smart Temperature Compensation) can be
factory calibrated to achieve a very high time accuracy of ±6ppm over
-40°C to +85°C (option A) and ± 8ppm over -40°C to +125°C (option C).
Block Diagram
Beside standard RTC functions, it includes a Backup-Battery Input with
internal switchover function, a programmable trickle-charge circuitry, an
integrated temperature sensor with digital-output and offers 8 Bytes RAM
and 2 Bytes EEPROM for customer application.
The calendar function tracks year and leap-year flags. The clock tracks
second, minute and hour in 24-hour format. Programmable alarm setting
and universal timer functions increase flexibility.
 Manufactured by Micro Crystal
 Stocked & distributed by Golledge
Tel: +44 1460 256 100
24 May 2012
Fax: +44 1460 256 101
E-mail: sales@golledge.com
Web: www.golledge.com