Real Time Clock - SPIꢀBus
RV3049C2
Specifications
Parameters
2011/65/EU
Product
Option
Codes
RV3049C2
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
A
B
D
E
5.00
±0.20
3.20
±0.20
Operating temperature range:
-40 to +85°C
Extended op. temp range:
1.20
-40 to +125°C
(max)
SOLDER PAD LAYOUT
0.90
Storage temperature range:
-55 to +125°C
6
5
10
1
2.20
Supply voltage (VDD):
SPI bus active 1.8 ~ 5.5V
Time-keeping mode 1.3 ~ 5.5V
1.00
0.40
0.60
1.00
TOP VIEW
Supply current (VDD=3.0V):
0.80μA typ, 1.0μA max
PAD CONNECTION
PAD CONNECTION
Shock and vibration resistance:
±5ppm, 5,000g, 0.3ms, ½ sine
±5ppm, 20g, 10.0 ~ 2,000Hz
1
2
3
4
5
Supply (VDD)
6
7
Ground
Frequency output (CLKOUT)
Chip select (CS)
Interrupt output (/INT)
Backup supply
8
Serial clock input (SCL)
Serial data out (SDO)
9
Serial data in (SDI)
Soldering condition:
Reflow, 260°C, 20 sec max
10
CLK output enable (CLKOE)
Standard. Optional - Please specify required code(s) when ordering
Features
Ordering Information
Temperature compensated accuracy
AEC Q200 Rev C compliant
Product + option code
eg: RV3049C2/B ±25ppm -40+85°C
Option code X (eg RV3049C2/X) denotes a custom spec.
Compliant with 4-wire SPI-Bus
Available on T&R - 1k or 5k pcs per reel. See our website for details
Evaluation / development board &ꢀmanual available on request
Backup battery input (internal switchover)
Programmable alarm, timer and interrupt
Description
The RV3049C2 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 from -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 &ꢀsupplied by Golledge
Tel: +44 1460 256 100
Fax: +44 1460 256 101
E-mail: sales@golledge.com
Web: www.golledge.com
03 May 2012
