IC MOD RABBIT 3000 44.2MHZ 1MB (20-101-0949) Equivalent & Substitute Parts

Part Overview

The Digi RabbitCore® Embedded Module (20-101-0949) is an MPU core module featuring the Rabbit 3000 processor operating at 44.2MHz with 1MB RAM and 512KB internal flash memory expandable to 16MB external flash. This module is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing system support and new designs requiring compatible embedded processing capabilities.

Substiute Parts

20-101-0949

DigiIn Stock: 81420-101-0949 Datasheet

Current PartRFQ

20-101-1051

DigiIn Stock: 117920-101-1051 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 20-101-0949 is determined by the following critical parameters:

• Core Processor Architecture: Rabbit 3000 processor compatibility
• Operating Frequency: 44.2MHz clock speed
• Memory Configuration: 1MB RAM requirement
• Connector Interface: IDC header compatibility (2x17 and 2x5 configurations)
• Physical Form Factor: Identical module dimensions (47.00mm x 69.00mm)
• Flash Memory Capacity: External flash expansion capability

The substitute part 20-101-1051 maintains identical processor, frequency, RAM, connector type, and physical dimensions. Variations in external flash capacity (32MB vs. 16MB) and operating temperature range do not preclude substitution for applications within the overlapping temperature specification.

Parameter Comparison

Engineering Selection Recommendations

The 20-101-1051 serves as a direct substitute for the obsolete 20-101-0949 based on identical core processor, frequency, RAM, connector interface, and physical dimensions. The substitute part offers increased external flash capacity (32MB vs. 16MB), providing enhanced memory resources without architectural changes.

Selection of 20-101-1051 is appropriate for applications operating within the 0°C to 70°C temperature range. Applications requiring the extended lower temperature specification (-40°C) of the original part must evaluate alternative solutions or confirm operational requirements within the narrower temperature window.

The RoHS Compliant status of 20-101-1051 provides regulatory advantage for new designs and procurement cycles subject to environmental compliance mandates. The Last Time Buy status indicates limited availability; procurement planning should account for supply constraints.

Frequently Asked Questions (FAQ)

Q: Can 20-101-1051 replace 20-101-0949 in existing designs?

A: Yes. Both modules share identical Rabbit 3000 processor, 44.2MHz clock speed, 1MB RAM, connector configuration, and physical dimensions. Substitution is mechanically and electrically compatible for applications operating within 0°C to 70°C. Applications requiring -40°C operation must confirm alternative solutions.

Q: What is the difference in external flash memory between these parts?

A: The 20-101-0949 provides 16MB external flash, while 20-101-1051 provides 32MB external flash. The increased capacity in the substitute part does not create incompatibility; applications designed for 16MB operation function identically with the expanded 32MB capacity.

Q: Does the additional D-Picture Card connector on 20-101-1051 affect compatibility?

A: No. The additional D-Picture Card interface on 20-101-1051 is a supplementary feature that does not impact the core IDC header connectivity required by designs using 20-101-0949. Existing connector assignments remain unchanged.

Q: What is the significance of the Product Status difference?

A: The 20-101-0949 is classified as Obsolete, indicating end-of-life status and unavailability for new orders. The 20-101-1051 is Last Time Buy, representing a transition phase with limited remaining inventory. Both statuses indicate the need for long-term component planning and potential migration to alternative embedded solutions.

Q: Are there compliance differences between these parts?

A: The 20-101-1051 carries RoHS Compliant certification, while the 20-101-0949 compliance status is not specified. Both parts maintain REACH Unaffected status. For procurement subject to environmental regulations, 20-101-1051 provides documented compliance advantage.