2-wire Serial Interface (I2C Bus)

Products *1
Time
Keeping
Current		 *2
Time Keeping
Voltage		 *3
Alarm Interrupt		 *4
Periodic Interrupt		 *5
32 kHz Clock		 *6
Clock
Adjustment
Function		 *7
OSC
Halt
Sensing		 Packages Others Data
Sheet
R2221T/L
R2223T/L		 Typ.0.18µA
(3V)		 0.9V to
5.5V		 2set
(W/H/M)
(H/M)		 2Hz to 1month CMOS OUT
With Control pin		 * * TSSOP10G
QFN018018-12
(under development)		   780KB
R2023K/T Typ.0.45µA
(3V)		 1.0V to
5.5V		 2set
(W/H/M)
(H/M)		 2Hz to 1month CMOS OUT
With Control pin		 * * TSSOP10G
FFP12		 Minimum Time Keeping Voltage: 0.66V(TYP) 562KB
R2051S/K/T Typ.0.40µA
(3V)		 1.00V to
5.50V		 2set
(W/H/M)
(H/M)		 2Hz to 1month CMOS OUT
Level Shifter		 * * SSOP16
FFP12
TSSOP10G		 *8
Battery backup switch-over function		 724KB
R2025S/D Typ.0.48µA
(3V)		 1.15V to
5.50V		 2set
(W/H/M)
(H/M)		 2Hz to 1month CMOS OUT
With Control pin		 * * SOP14
SON22		 *10
Incoporated Crystal Unit, High precision (0±5ppm)		 867KB
RV5C386A Typ.0.35µA
(3V)		 1.45V to
5.5V		 2set
(W/H/M)
(H/M)		 2Hz to 1month CMOS OUT
With Control pin		 * * SSOP10G - 513KB
RV5C387A Typ.0.35µA
(3V)		 1.45V to
5.5V		 2set
(W/H/M)
(H/M)		 2Hz to 1month Open Drain * * SSOP10G - 512KB
RS5C372A Typ.0.5µA
(3V)		 1.3V to
6.0V		 2set
(W/H/M)		 2Hz to 1month Open Drain * * SSOP8 *9
32000/32768Hz crystal selectable		 528KB
RS5C372B Typ.0.5µA
(3V)		 1.45V to
6.0V		 2set
(W/H/M)		 2Hz to 1month CMOS OUT * * SSOP8 *9
32000/32768Hz crystal selectable		 528KB
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