DIMENSIONS RV-2251-C3 Real-Time Clock Module with I 2 C-Bus DESCRIPTION The RV-2251-C3 is a SMT Real-Time Clock Module that incorporates an integrated CMOS circuit together with an XTAL. It operates under vacuum in a hermetically sealed ceramic package with metal lid. APPLICATIONS IoT Metering Industrial Automotive Health Care Wearables, Portables Package: Recommended Solder Pad: 0,9 max. 2,5 3,7 0,8 0,55 0,2 0,3 0,5 0,8 0,8 0,8 0,8 0,8 0,7 0,8 3,0 4,2 1,25 0,55 0,8 0,5 0,7 1 2 10 11 9 5 4 7 8 3 12 6 FEATURES Low power consumption: 210 nA @ 3 V. Wide operating voltage range: 0.9 V to 5.5 V. Time accuracy: ±20 ppm @ 25°C. 3.0 V Regulated Output for ML rechargeable batteries (V REG ). Level shifter for peripherals (V IO ). User programmable offset value. Automatic Backup switchover function and V BAT monitoring. Provides year, month, date, weekday, hours, minutes and seconds. Time Update and Alarm functions. Clock output frequency: 32.768 kHz. I 2 C-bus interface: 400 kHz. 100% Pb-free, RoHS-compliant. Automotive qualification according to AEC-Q200 available. BLOCK DIAGRAM SYSTEM CONTROL LOGIC I 2 C-BUS INTERFACE VOUT VREG VDD Alarm_D Minutes Alarm_W Weekday Alarm_W Hours Alarm_W Minutes Offset Years Weekdays Hours Minutes Seconds Control1 RAM Alarm_D Hours Date 12 10 11 2 INT Months Control2 F 0 VOLTAGE REGULATOR VOLTAGE DETECTOR1 SW1 SW2 VBAT 9 BATTERY MONITOR VSS 7 1 LEVEL SHIFTER SCL 6 SDA 3 CLKOUT 8 nINT CONTROL VIOL VOLTAGE DETECTOR2 VIO 5 XTAL OSC FREQUENCY DIVIDER & OFFSET COMPENSATION 4 2 ECO VIOL CONTROL INTERNAL POWER SUPPLY & POR Metal lid is connected to V SS (pin #7) All dimensions in mm typical
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RV-2251-C3 - Micro Crystal · 2019. 2. 4. · RV-2251-C3 Real-Time Clock Module with I2C-Bus DESCRIPTION The RV-2251-C3 is a SMT Real-Time Clock Module that incorporates an integrated
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DIMENSIONS
RV-2251-C3Real-Time Clock Module with I2C-Bus
DESCRIPTIONThe RV-2251-C3 is a SMT Real-Time Clock Module that incorporates an integrated CMOS circuit together with an XTAL. It operates under vacuum in a hermetically sealed ceramic package with metal lid.
FEATURESLow power consumption: 210 nA @ 3 V.Wide operating voltage range: 0.9 V to 5.5 V.Time accuracy: ±20 ppm @ 25°C.3.0 V Regulated Output for ML rechargeable batteries (VREG).Level shifter for peripherals (VIO).User programmable offset value.Automatic Backup switchover function and VBAT monitoring.Provides year, month, date, weekday, hours, minutes and seconds.Time Update and Alarm functions.Clock output frequency: 32.768 kHz.I2C-bus interface: 400 kHz.100% Pb-free, RoHS-compliant.Automotive qualification according to AEC-Q200 available.
A unique part number will be generated for each product specification, i.e: 20xxxx-MG01 1'000 pcs (in 12 mm tape on 7" reel) 20xxxx-MG03 3'000 pcs (in 12 mm tape on 7" reel)
Temperature rangePackage sizeTA = -40 to +85°C (Standard)
QualificationQC = Commercial Grade (Standard)QA = Automotive Grade AEC-Q200Product type
RTC module
C3 = 3.7 x 2.5 x 0.9 mm
RV - 2251 - C3 TA QC
TERMINATIONS ANDPROCESSING
Package Termination Processing
SON-12 Au flashed pads IPC/JEDEC J-STD-020C260°C / 20 - 40 s
ORDERING INFORMATION
All specifications subject to change without notice.
ENVIRONMENTAL CHARACTERISTICS
Conditions Max. Dev.Storage temp. range –55 to +125°C
TA Operating temperature range –40 to +85°C
Shock resistance ΔF/F 5000 g, 0.3 ms, ½ sine ±5 ppm
Vibration resistance ΔF/F 20 g / 10–2000 Hz ±5 ppm
ELECTRICAL CHARACTERISTICS AT 25°C
1) Tighter frequency tolerances on request.
More detailed information can be found in the Application Manual.
Symbol Condition Min. Typ. Max UnitPeripheral voltage VIO I2C-bus active 1.8 5.5 V
Supply voltage VOUT Time keeping 0.9 5.5 V
Current consumption Time keeping mode IRTCO
I2C-bus inactive, VBAT 3 V, ECO on 210 320 nA
CLKOUT frequency FCLKOUT 32768 Hz
Frequency tolerance ΔF/F @ 25°C ±20 1) ppm
Aging first year max. ΔF/F @ 25°C ±3 ppm
PIN CONNECTIONS TOP VIEW
M825A12251
#1 #5
#7#11
Pin 1 Index
Product Date Code
Part Designation
#6#12
-160-140-120-100-80-60-40-20
020
-60 -40 -20 0 20 40 60 80 100
ΔF/
F [p
pm]
T[°C]
T0 = 25°C ±5°C
–0.035*(T-T0)2 ppm ±10%
Tuning Fork Crystal
FREQUENCY TEMPERATURECHARACTERISTICS
Pin Connection1 VIOL VIO Monitoring Output2 INT Interrupt Output3 SDA Serial Data4 ECO Oscillator Mode Select5 VIO Peripheral Supply6 SCL Serial Clock Input7 VSS Ground8 CLKOUT 32.768 kHz Clock Output9 VBAT Backup Power Supply10 VREG Voltage Regulator Output11 VOUT Internal Supply12 VDD Main Power Supply