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Real Time Clock Modules Line-Up

Integrated crystal units mean our real-time clock modules do not need frequency tuning.
Epson's lineup of real-time clocks realize accurate timekeeping and low current consumption,
and are ideal for stand-alone equipment.


SPI Bus & I2C bus

Products Feature FOUT Alarm Memory Timer Back up
Current
[μA]
Voltage
Range
[V]
Data
Sheet
Appli
Note
new
RX6110SA
Low Power
Power Switching
Built-in SRAM
Linux®Driver
0.13 1.1 to 5.5 pdf458KB pdf845KB

SPI Bus

Products Feature FOUT Alarm Memory Timer Back up
Current
[μA]
Voltage
Range
[V]
Data
Sheet
Appli
Note
RX-4581NB Built-in SRAM 0.4 1.6 to 5.5 pdf188KB pdf343KB
RX-4045 SA/NB High Stability
0.48 1.15 to 5.5 pdf172KB pdf508KB
RX-4035 SA/LC Built-in Timestamp
PWR-Switching
0.35 1.0 to 5.5 pdf278KB pdf822KB
0.4
RX-4803 SA/LC Built-in DTCXO
Linux®Driver
0.75 1.6 to 5.5 pdf214KB pdf538KB
RX-4571SA Low Backup Voltage 0.32 1.0 to 5.5 pdf190KB pdf579KB
RX-4571NB pdf731KB
RX-4571LC pdf723KB
RTC-4574 SA/JE/NB Simple function 0.5 1.6 to 5.5 pdf193KB pdf518KB
RX-4574LC Simple function 0.35 1.3 to 5.5 pdf161KB pdf349KB
RX-4575LC Built-in external event detection 0.35 1.3 to 5.5 pdf197KB pdf418KB
RTC-4701 NB/JE Built-in Temperature Sensor 0.5 1.6 to 5.5 pdf181KB pdf213KB
RTC-4543 SA/SB Simple function 1.0 1.4 to 5.5 pdf177KB pdf224KB

I2C bus

Products Feature FOUT Alarm Memory Timer Back up
Current
[μA]
Voltage
Range
[V]
Data
Sheet
Appli
Note
new
RX8900SA/CE
Built-in 32.768 kHz-DTCXO,
High Stability
and Power Switching
Linux®Driver
  0.7 1.6 to 5.5 pdf325KB pdf
674KB
new
RX8010 SJ
Low current consumption
Linux®Driver
0.16 1.1 to 5.5 pdf405KB pdf699KB
RX-8571 SA Low power consumption/ 128bit (8bit x 16,SRAM)
Long-running timer(65535hours)
0.2 1.3 to 5.5 pdf186KB pdf554KB
RX-8571 NB pdf568KB
RX-8571 LC 0.22
pdf561KB
RTC-8564 NB/JE Low current consumption 0.275 1.1 to 5.5 pdf213KB pdf392KB
RX-8564 LC Low current consumption 0.275 1.3 to 5.5 pdf213KB pdf396KB
RX-8581 SA/NB/JE High Quality 32kHz output 0.45 1.6 to 5.5 pdf191KB pdf583KB
RX-8025 SA/NB High Stability
0.48 1.15 to 5.5 pdf208KB pdf444KB
RX-8035 SA/LC Built-in Timestamp
PWR-Switching
Linux®Driver
0.35 1.0 to 5.5 pdf189KB pdf899KB
0.4
(LC)
RX-8731 LC ID-ROM + EEPROM 0.35 1.3 to 5.5 pdf178KB pdf788KB
RX-8803 SA/LC Built-in DTCXO
Linux®Driver
0.75 1.6 to 5.5 pdf214KB pdf588KB

Parallel 4-bit

Products Feature FOUT Alarm Memory Timer Back up
Current
[μA]
Voltage
Range
[V]
Data
Sheet
Appli
Note
RTC-7301SF Built-in Temperature Sensor 0.6 1.6 to 5.5 pdf187KB pdf321KB
RTC-7301DG Available Alarm and timer
RTC-72421/3 4-bit Simple function 0.9 2.0 to 5.5 pdf276KB pdf404KB

For automotive

Products
car
Feature FOUT Alarm Memory Timer Back up
Current
[μA]
Voltage
Range
[V]
Data
Sheet
Appli
Note
car
RA8900 SA/CE
Built-in 32.768 kHz-DTCXO, High Stability
and Power Switching
  0.7 1.6 to 5.5 pdf329KB pdf
672KB
car
RA4803 SA
AEC-Q200 / SPI-Bus
Built-in DTCXO
0.75 1.6 to 5.5 pdf508KB pdf674KB
new
RA8803 SA
AEC-Q200
I2C-Bus
Built-in DTCXO
0.75 1.6 to 5.5 pdf548KB pdf727KB
RA-4574SA AEC-Q200 0.5 1.6 to 5.5 pdf189KB pdf491KB
RA-8581SA AEC-Q200 0.45 1.6 to 5.5 pdf191KB pdf499KB
RA-8565SA AEC-Q200 to +125°C 0.55 1.7 to 5.5 pdf205KB pdf396KB
RA-4565SA AEC-Q200 to +125°C 0.5 1.5 to 5.5 pdf217KB pdf500KB

Real Time Clock Modules Package Line-Up

Actual size(nm) Model
Serial I2C-bus Serial
&
I2C-bus
Parallel Automotive
car
CE : 3.2×2.5×1.0t   RX8900     RA8900
SA : 10.1×7.4×3.3t
(SOP-14pin)
RX-4035
RX-4045
RX-4803
RTC-4574
RTC-4543

RX-4571
RX-8900
RX-8025

RX-8035
RX-8571
RX-8581
RX-8803
RX6110SA   RA8900
RA-4565

RA4803

RA-4574
RA-8565
RA-8581

RA8803
SJ:7.0×6.0×2.65t
(SOP-8pin)
RX8010    
JE : 7.3×6.2×1.5t
(VSOJ-20pin)
RTC-4701
RTC-4574
RTC-8564
RX-8581
   
NB : 6.3×5.0×1.4t
(SON-22pin)
RX-4045
RX-4581
RTC-4701
RTC-4574
RX-4571
RX-8025
RTC-8564
RX-8571
RX-8581
   
LC : 3.6×2.8×1.2t
(VSOJ-20pin)
RX-4035
RX-4803
RX-4574

RX-4575
RX-4571
RX-8564
RX-8571
RX-8731
RX-8803
RX-8035
   
SF : 10.2×7.8×2.0t
(ssop-24pin)
RTC-7301  
DG / 72421 : 23.1x6.3x4.2t
(DIP-18pin)
RTC-7301
RTC-72421
 
72423 : 16.3x12.2x2.8t
(SOP-24pin)
RTC-72423