Datasheet

DIMENSIONS
MICRO CRYSTAL SWITZERLAND
RV-3049-C2
Real Time Clock Module with SPI-Bus
All dimensions in mm typical
DESCRIPTION:
The RV-3049-C2 is a Real-Time-Clock Module with embedded
Crystal. This RTC has 4-wire serial Interface (SPI-Bus)
and offers temperature compensated time. The STC-Smart
Temperature Compensation is calibrated in the factory and leads
to a very high time-accuracy of ± 6ppm from -40°C to +85°C and
± 8ppm from -40°C to +125°C.
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's application.
The calendar function tracks year and leap -year fl ags. The clock tracks
second, minute and hour in 24-hour format. Programmable alarm setting
and universal timer functions increase fl exibility.
For pick-and-place equipment, the parts are available in 12 mm tape:
7” (178 mm) reel with 1'000 parts
13” (330 mm) reel with 5'000 parts
Extremely Accurate RTC Module
with embedded Xtal.
SPI Interface
Temperature Compensation
Automotive qualified, according to
AEC-Q200 Rev. C
Option A: Calibrated
T
emperature Time Deviation
@ +25°C ± 0.26 s/day ± 3ppm
0°C to +50°C ± 0.35 s/day ± 4ppm
-10°C to +60°C ± 0.44 s/day ± 5ppm
-40°C to +85°C ± 0.52 s/day ± 6ppm
-40°C to +125°C ± 0.70 s/day ± 8ppm
Option B: Default
Temperature Time Deviation
@ +25°C ± 0.26 s/day ± 3ppm
0°C to +50°C ± 0.44 s/day ± 5ppm
-10°C to +60°C ± 0.87 s/day ±10ppm
-40°C to +85°C ± 2.17 s/day ±25ppm
Package: Recommended Solder Pad:
0
,
6
3
,
2
1,0
5,0
m
a
x
.
1
,
2
0
,
9
4
,
0
1,0 1,0 1,0 1,0
2
,
2
0
,
9
4,6
0
,
3
5
0,4
0,6
±
0
,
2
± 0,2
BLOCKDIAGRAM:
100% leadfree, RoHS - compliant
OUTPUT
CONTROL
OSC
SPI-BUS
4-wire
Serial
Interface
DIVIDER
and
TEMPERATURE
COMPENSATION
LOGIC
SYSTEM
CONTROL
LOGIC
TEMPERATURE
SENSOR
32.768 kHz
Xtal
CLKOUT
CLKOE
INT
SCL
V
DD
V
SS
POWER
CONTROL
V
BACKUP
SDI
On / Off Ctrl
Control 4
29
00
Year Alarm
Month Alarm
Weekday Alarm
Day Alarm
Hour Alarm
Minutes Alarm
Year
Month
Weekday
Date
Hours
Minutes
Seconds
Control 3
IRQ Ctrl
User EEPROM
User RAM
Temperature °K
Timer High
Timer Low
Seconds Alarm
User RAM
28
20
Xtal T0 Temp
Xtal Temp-Coef
EE Control 1
2 Bytes
38
8 Byte
Xtal Deviation
3F
SDO
CE