RX-4045NB:AA3 is available for purchase but is not normally stocked.
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Real Time Clock (RTC) IC Clock/Calendar SPI 22-SMD, 20 Leads, Flat Leads
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Real Time Clock (RTC) IC Clock/Calendar SPI 22-SMD, 20 Leads, Flat Leads
22-LFDFN

RX-4045NB:AA3

DigiKey Part Number
SER3769TR-ND - Tape & Reel (TR)
SER3769CT-ND - Cut Tape (CT)
SER3769DKR-ND - Digi-Reel®
Manufacturer
EPSON
Manufacturer Product Number
RX-4045NB:AA3
Description
IC RTC CLK/CALENDAR SPI 22SON
Customer Reference
Detailed Description
Real Time Clock (RTC) IC Clock/Calendar SPI 22-SMD, 20 Leads, Flat Leads
Datasheet
 Datasheet
Product Attributes
Type
Description
Select All
Category
Manufacturer
EPSON
Series
RX-4045NB
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Part Status
Last Time Buy
DigiKey Programmable
Not Verified
Type
Clock/Calendar
Features
Alarm, Leap Year
Memory Size
-
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
SPI
Voltage - Supply
1.7V ~ 5.5V
Voltage - Supply, Battery
-
Current - Timekeeping (Max)
1.2µA ~ 1.8µA @ 3V ~ 5V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
22-SMD, 20 Leads, Flat Leads
Supplier Device Package
22-SON (6.3x4.8)
Product Questions and Answers

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Last Time Buy
Last Time Buy Date: 16/04/2026
Quantity
All prices are in EUR
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1€8.44000€8.44
* All Digi-Reel orders will add a €5.50 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
250€5.36516€1,341.29
500€5.21824€2,609.12
750€5.14471€3,858.53
1 250€5.06322€6,329.03
Manufacturers Standard Package
Unit Price without VAT:€8.44000
Unit Price with VAT:€10.59220