Real Time Clock

Epson's wide range of Real Time Clock Modules (RTC) with built-in XTAL save power, provide superior accuracy, and simplify system design. Thanks to a rich set of optional functions, such as alarms and time stamps, RTCs can cover multiple additional tasks beside the time keeping.

Features of Seiko Epson Real Time Clock Module


Recommended Products

Model Size
[ mm ]
Feature Voltage Range
[V]
Frequency tolerance
[x10-6]
Back up Current
[µA]
Power Switching Time stamp Memory RoHS
REACH
Brief Sheet
Application manual
Linux
®
Driver
Inventory
1 RX8111CE
3.2 x 2.5 x 1.0 I2C-Bus,
Low Power,
8 time stamps
1.1 to 5.5 A : ±11.5 / +25°C

B : ±23.0 / +25°C
0.1 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM61E-01)pdf
RX8111CE
1 RX4111CE
3.2 x 2.5 x 1.0 SPI-Bus,
Low Power,
8 time stamps
1.1 to 5.5 A : ±11.5 / +25°C

B : ±23.0 / +25°C
0.1 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM62E-01)pdf
RX4111CE
1 RX8804CE
3.2 x 2.5 x 1.0 I2C-Bus

Built-in
DTCXO,
High
Stability
1.5 to 5.5 XA :
±3.4 / -40 to +85°C
±8.0 / +85 to +105°C

XB :
±5.0 / -40 to +85°C
±8.0 / +85 to +105°C

0.35 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM59E-05)pdf
RX8804CE
1 RA8804CE
(AEC-Q100)
3.2 x 2.5 x 1.0 I2C-Bus

Built-in
DTCXO,
High
Stability
1.5 to 5.5 XA :
±3.4 / -40 to +85°C
±8.0 / +85 to +105°C

XB :
±5.0 / -40 to +85°C
±8.0 / +85 to +105°C

0.35 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM60E-02)pdf
Contact us
1 RX8130CE 3.2 x 2.5 x 1.0 I2C-Bus

Backup
battery
charge
control,
Delay with
reset output
1.1 to 5.5 B : 5±23
/ +25°C
0.3 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM50E-06)pdf
RX8130CE
1 RX8900CE 3.2 x 2.5 x 1.0 I2C-Bus

Built-in
DTCXO,
High
Stability
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C
0.7 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM45E-08)pdf
RX8900CE
1 RA8900CE
(AEC-Q200)
3.2 x 2.5 x 1.0 I2C-Bus

Built-in
DTCXO,
High
Stability
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C
0.7 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM44E-07) pdf
Contact us
1 RX6110SA B 10.1 x 7.4 x 3.3 SPI or I2C-Bus

Low
Power
Built-in
SRAM
1.1 to 5.5 B : 5±23
/ +25°C
0.13 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM40E-03)pdf
RX6110SA B
1 RA4803SA
(AEC-Q200)
10.1 x 7.4 x 3.3 SPI-Bus

Built-in
DTCXO
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM38E-03)pdf
Contact us
z RX8900SA 10.1 x 7.4 x 3.3 I2C-Bus

Built-in
DTCXO,
High
Stability
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C
0.7 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM45E-08)pdf
RX8900SA
z RX6110SA A
(Custom)
10.1 x 7.4 x 3.3 SPI or I2C-Bus

Low
Power
Built-in
SRAM
1.1 to 5.5 A : 5±11.5
/ +25°C
0.17 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM49E-01)pdf
Contact us
z RX-4035LC 3.6 x 2.4 x 1.2 SPI-Bus

High
Stability
Built-in
Timestamp
1.0 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C

B : 5±23
/ +25°C
0.4 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM36E-07)pdf
RX-4035LC
z RX-4035SA 10.1 x 7.4 x 3.3 SPI-Bus

High
Stability
Built-in
Timestamp
1.0 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C

B : 5±23
/ +25°C
0.35 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM36E-07)pdf
RX-4035SA
z RX-4045NB 6.3 x 5.2 x 1.4 SPI-Bus

High
Stability
1.15 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C
0.48 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM01E-03)pdf
RX-4045NB
z RX-4045SA 10.1 x 7.4 x 3.3 SPI-Bus

High
Stability
1.15 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C
0.48 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM01E-03)pdf
RX-4045SA
z RX-4571LC 3.6 x 2.4 x 1.2 SPI-Bus

Low
Backup
Voltage
1.0 to 5.5 B : 5±23
/ +25°C
0.32 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM18E-04)pdf
RX-4571LC
z RX-4571NB 6.3 x 5.2 x 1.4 SPI-Bus

Low
Backup
Voltage
1.0 to 5.5 B : 5±23
/ +25°C
0.32 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM20E-03)pdf
RX-4571NB
z RX-4571SA 10.1 x 7.4 x 3.3 SPI-Bus

Low
Backup
Voltage
1.0 to 5.5 B : 5±23
/ +25°C
0.32 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM21E-02)pdf
RX-4571SA
z RX-4803LC 3.6 x 2.4 x 1.2 SPI-Bus

Built-in
DTCXO
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM33E-04)pdf
RX-4803LC
z RX-4803SA 10.1 x 7.4 x 3.3 SPI-Bus

Built-in
DTCXO
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM33E-04)pdf
RX-4803SA
z RA-4565SA
(AEC-Q200)
10.1 x 7.4 x 3.3 SPI-Bus

Extended
operating
temperatire
range
(to +125°C)
1.5 to 5.5 B : 5±23
/ +25°C
0.5 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM24E-02)pdf
Contact us
z RX8010SJ 7.0 x 6.0 x 2.65 Low
current
consumption
Built-in
SRAM
1.1 to 5.5 B : 5±23
/ +25°C
0.16 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM37E-06)pdf
RX8010SJ
z RX-8803LC 3.6 x 2.4 x 1.2 I2C-Bus

Built-in
DTCXO
High
Stabilty
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM34E-06)pdf
RX-8803LC
z RX-8803SA 10.1 x 7.4 x 3.3 I2C-Bus

Built-in
DTCXO
High
Stabilty
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM34E-06)pdf
RX-8803SA
z RX-8025NB 6.3 x 5.2 x 1.4 I2C-Bus

High
Stability
1.15 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C
0.48 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM10E-04)pdf
RX-8025NB
z RX-8025SA 10.1 x 7.4 x 3.3 I2C-Bus

High
Stability
1.15 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C
0.48 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM10E-04)pdf
RX-8025SA
z RX-8035LC 3.6 x 2.4 x 1.2 I2C-Bus

High
Stability
Built-in
Timestamp
1.0 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C

B : 5±23
/ +25°C
0.40 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM35E-11)pdf
RX-8035LC
z RX-8035SA 10.1 x 7.4 x 3.3 I2C-Bus

High
Stability
Built-in
Timestamp
1.0 to 5.5 AA : 5±5.0
/ +25°C

AC : 0±5.0
/ +25°C

B : 5±23
/ +25°C
0.35 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM35E-11)pdf
RX-8035SA
z RX-8564LC 3.6 x 2.4 x 1.2 I2C-Bus

Low
current
consumption
1.3 to 5.5 B : 5±23
/ +25°C
0.275 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM12E-04)pdf
RX-8564LC
z RTC-8564NB 6.3 x 5.2 x 1.4 Low
current
consumption
1.1 to 5.5 B : 5±23
/ +25°C
0.275 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM11E-05)pdf
RTC-8564NB
z RTC-8564JE 7.3 x 6.2 x 1.5 I2C-Bus

Low
current
consumption
1.1 to 5.5 B : 5±23
/ +25°C
0.275 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM11E-05)pdf
RTC-8564JE
z RX-8571LC 3.6 x 2.4 x 1.2 I2C-Bus

Low
current
consumption
Built-in
SRAM
1.3 to 5.5 B : 5±23
/ +25°C
0.22 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM28E-02)pdf
RX-8571LC
z RX-8571NB 6.3 x 5.2 x 1.4 Low
current
consumption
Built-in
SRAM
Long-running
timer
(65535hours)
1.3 to 5.5 B : 5±23
/ +25°C
0.22 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM29E-02)pdf
RX-8571NB
z RX-8571SA 10.1 x 7.4 x 3.3 Low
current
consumption
Built-in
SRAM
1.3 to 5.5 B : 5±23
/ +25°C
0.22 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM30E-02)pdf
RX-8571SA
z RX-8731LC 3.6 x 2.4 x 1.2 I2C-Bus

Unique
ID-ROM
Built-in
EEPROM
1.3 to 5.5 B : 5±23
/ +25°C
0.35 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM23E-04)pdf
RX-8731LC
z RA8803SA
(AEC-Q200)
10.1 x 7.4 x 3.3 I2C-Bus

Built-in
DTCXO,
High
Stability
1.6 to 5.5 UA : ±3.4
/ -40 to +85°C

UB : ±5.0
/ -40 to +85°C

UC : ±5.0
/ -30 to +70°C

AA : 5±5.0
/ +25°C
0.75 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM39E-03)pdf
Contact us
z RA-8565SA
(AEC-Q200)
10.1 x 7.4 x 3.3 I2C-Bus

Extended
operating
temperatire
range
(to +125°C)
1.7 to 5.5 B : 5±23
/ +25°C
0.55 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM22E-01)pdf
Contact us
z RTC-72423 16.3 x 7.9 x 2.8 Parallel

4-bit
Simple
function
2.0 to 5.5 A : ±20
/ +25°C

B : ±50
/ +25°C
0.9 RoHSpdf REACHpdf BriefSheet
pdf
AppManual
(ETM17E-02)pdf
RTC-72423
Page Top