RabbitCore RCM2120 Embedded Module (20-101-0436) Equivalent & Substitute Parts

Part Overview

The RabbitCore RCM2120 (20-101-0436) is an embedded module featuring a Rabbit 2000 processor operating at 22.1MHz with 512KB Flash and 512KB RAM. This module is classified as Obsolete, indicating it has reached end-of-life status and is no longer recommended for new designs. The availability of equivalent substitute parts is essential for maintaining existing systems, supporting legacy applications, and ensuring continuity in production environments where this module is currently deployed.

Substiute Parts

20-101-0436

DigiIn Stock: 119620-101-0436 Datasheet

Current PartRFQ

20-101-0434

DigiIn Stock: 150820-101-0434 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RabbitCore RCM2120 is determined by strict alignment of the following critical parameters:

Core Processor Architecture: Both the main part and substitute must utilize the Rabbit 2000 processor to ensure instruction set compatibility and firmware portability.

Processing Speed: The 22.1MHz clock frequency must be maintained to preserve timing-dependent application behavior and real-time performance characteristics.

Memory Configuration: Flash and RAM capacities (512KB each) must match exactly to support existing firmware images and runtime memory requirements without modification.

Physical Form Factor: The 2.000" L x 4.600" W module dimensions and 2 IDC Headers 2x20 connector configuration must be identical to ensure mechanical fit and electrical interface compatibility with existing carrier boards.

Electrical Compliance: RoHS compliance and REACH unaffected status must be maintained for regulatory consistency in production environments.

The RabbitCore RCM2100 (20-101-0434) meets all substitution criteria across these parameters, establishing it as a qualified equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The RabbitCore RCM2100 (20-101-0434) is the qualified substitute for the RabbitCore RCM2120 (20-101-0436) based on complete alignment of processor architecture, memory configuration, physical form factor, and connector specifications.

Temperature Range Consideration: The RCM2120 supports an extended operating temperature range of -40°C to 85°C, while the RCM2100 operates within 0°C to 70°C. Applications requiring operation below 0°C or above 70°C must retain the RCM2120. For applications operating within the 0°C to 70°C window, the RCM2100 provides full functional equivalence.

Product Status Context: Both modules carry legacy product status designations (Obsolete and Not For New Designs), reflecting their position in the Digi product lifecycle. For existing systems currently deployed with the RCM2120, the RCM2100 provides continuity of supply and operational compatibility. Both modules maintain RoHS compliance and REACH unaffected status, ensuring regulatory consistency.

Inventory Availability: Current stock levels indicate 1172 units of RCM2120 and 1412 units of RCM2100 available as new original inventory.

Frequently Asked Questions (FAQ)

Q: Can the RabbitCore RCM2100 directly replace the RCM2120 in existing applications?

A: Yes, provided the application operates within the RCM2100 temperature range of 0°C to 70°C. All processor, memory, physical, and electrical specifications are identical. No firmware modification or carrier board redesign is required.

Q: What is the primary difference between these two modules?

A: The operating temperature range differs. The RCM2120 supports -40°C to 85°C, while the RCM2100 supports 0°C to 70°C. All other functional and physical parameters are equivalent.

Q: Are both modules RoHS compliant?

A: Yes, both the RCM2120 and RCM2100 are RoHS compliant and REACH unaffected, maintaining regulatory consistency for production environments.

Q: What connector type is used on both modules?

A: Both modules use 2 IDC Headers 2x20 connectors with identical pinout and mechanical configuration, ensuring direct compatibility with existing carrier boards.

Q: Why is the RCM2120 classified as Obsolete?

A: The Obsolete designation indicates the product has reached end-of-life status and is no longer in active production. The RCM2100, classified as Not For New Designs, represents the later generation within the same product family before full discontinuation.

Q: Can I use the RCM2100 in applications requiring the extended temperature range of the RCM2120?

A: No. Applications requiring operation below 0°C or above 70°C must use the RCM2120. The RCM2100 is rated only to 0°C minimum and 70°C maximum.