Equivalent & Substitute Parts for 1337BCSRGI

Part Overview

The 1337BCSRGI is a Real Time Clock (RTC) IC with integrated clock/calendar functionality, manufactured by Renesas Electronics Corporation. This device provides time and date tracking with alarm capabilities and square wave output, interfacing via I2C protocol in a 16-SOIC surface mount package. The part is classified as obsolete, necessitating identification of active substitute components that maintain functional and electrical compatibility for new designs and production continuity.

Substiute Parts

1337BCSRGI

Renesas Electronics CorporationIn Stock: 10571337BCSRGI Datasheet

Current PartRFQ

1337AGDVGI

Renesas Electronics CorporationIn Stock: 21401337AGDVGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1337BCSRGI is determined by the following critical parameters that must remain consistent across equivalent components:

Functional Compatibility Parameters:

• Interface protocol: I2C (2-Wire Serial)
• Time and date format support: HH:MM:SS (12/24 hr) and YY-MM-DD-dd
• Feature set: Alarm, Leap Year, Square Wave Output
• Voltage supply range: 1.8V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C

Electrical Compatibility Parameters:

• Supply voltage compatibility across the specified range
• I2C protocol implementation
• Timekeeping functionality at specified temperature extremes

Physical Compatibility Parameters:

• Surface mount technology
• Pin count and signal compatibility

The substitute part 1337AGDVGI maintains all functional and electrical parameters while utilizing a different package form factor (8-TSSOP versus 16-SOIC). This substitution is valid where PCB layout accommodates the smaller package footprint and pin configuration.

Parameter Comparison

Engineering Selection Recommendations

The 1337AGDVGI serves as the active substitute for the obsolete 1337BCSRGI. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The 1337AGDVGI maintains active product status with Renesas Electronics Corporation, ensuring continued availability and manufacturing support. The 1337BCSRGI is classified as obsolete, making the 1337AGDVGI the appropriate choice for new designs and production continuity.

Compliance and Certification: The 1337AGDVGI is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components. These certifications support long-term design viability and market compliance.

Functional Equivalence: Both devices provide identical clock/calendar functionality, interface protocol, voltage supply range, and operating temperature specifications. The feature set including alarm, leap year support, and square wave output is preserved across both parts.

Package Consideration: The 1337AGDVGI utilizes an 8-TSSOP package compared to the 16-SOIC package of the main part. This represents a reduction in package size and pin count. PCB layout redesign is required to accommodate this package change, but the smaller footprint provides space optimization benefits.

Frequently Asked Questions (FAQ)

Q: Can the 1337AGDVGI directly replace the 1337BCSRGI without PCB modification?

A: No. While the devices are functionally equivalent, the package form factors differ significantly (16-SOIC versus 8-TSSOP). PCB layout modification is required to accommodate the different pin configuration and footprint of the 1337AGDVGI.

Q: Are the I2C interface signals compatible between these two parts?

A: Yes. Both devices implement I2C protocol with identical signal specifications and voltage levels (1.8V ~ 5.5V). The interface compatibility is maintained across the substitution.

Q: What is the impact of the different Moisture Sensitivity Levels (MSL)?

A: The 1337BCSRGI has MSL 1 (unlimited shelf life), while the 1337AGDVGI has MSL 3 (168-hour shelf life). The 1337AGDVGI requires controlled storage conditions and has a defined moisture exposure window. Proper handling and storage procedures must be implemented for the substitute part.

Q: Does the 1337AGDVGI support the same time and date formats?

A: Yes. Both parts support identical time format (HH:MM:SS with 12/24 hour selection) and date format (YY-MM-DD-dd) specifications.

Q: What are the key electrical parameters that must match for substitution?

A: The critical electrical parameters are supply voltage range (1.8V ~ 5.5V), I2C interface protocol, operating temperature range (-40°C ~ 85°C), and timekeeping current specifications. Both parts meet these requirements.

Q: Is the 1337AGDVGI suitable for new product designs?

A: Yes. The 1337AGDVGI is classified as active product status with current manufacturing support and ROHS3 compliance, making it appropriate for new designs requiring RTC clock/calendar functionality.

Q: What is the base product number relationship between these parts?

A: Both the 1337BCSRGI and 1337AGDVGI share the base product number 1337, indicating they are part of the same RTC product family from Renesas Electronics Corporation.