| Products |
*1
Time
Keeping
Current |
*2
Time
Keeping
Voltage (V) |
*3
Alarm Interrupt |
*4
Periodic Interrupt |
*5
32 kHz Clock |
*6
Clock
Adjustment
Function |
*7
OSC
Halt
Sensing |
Packages
[PDF] |
Others |
Data
Sheet
[PDF] |
| R2023K/T |
Typ.0.45µA
(3V) |
1.0 to
5.5 |
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) |
1.00 to
5.50 |
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) |
1.15 to
5.50 |
2set
(W/H/M)
(H/M) |
2Hz
to 1month |
CMOS OUT With Control pin |
 |
 |
SOP14
SON22 |
*10
Incoporated Crystal Unit,
High precision (0±5ppm) |

(569KB) |
| RV5C386A |
Typ.0.35µA
(3V) |
1.45 to
5.5 |
2set
(W/H/M)
(H/M) |
2Hz
to 1month |
CMOS OUT
With Control pin |
 |
 |
SSOP10G |
- |

(381KB) |
| RV5C387A |
Typ.0.35µA
(3V) |
1.45 to
5.5 |
2set
(W/H/M)
(H/M) |
2Hz
to 1month |
Open Drain |
 |
 |
SSOP10G |
- |

(380KB) |
| RS5C372A |
Typ.0.5µA
(3V) |
1.3 to
6.0 |
2set
(W/H/M) |
2Hz
to 1month |
Open Drain |
 |
 |
SSOP8 |
*9
32000/32768Hz
crystal selectable |

(425KB) |
| RS5C372B |
Typ.0.5µA
(3V) |
1.45 to
6.0 |
2set
(W/H/M) |
2Hz
to 1month |
CMOS OUT |
 |
 |
SSOP8 |
*9
32000/32768Hz
crystal selectable |

(425KB) |