RabbitCore® Embedded Module Rabbit 3000 44.2MHz 1MB (101-0949) Equivalent & Substitute Parts

Part Overview

The Digi 101-0949 is a RabbitCore® Embedded 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 an MPU Core embedded processor module designed for embedded system applications requiring compact form factor and integrated connectivity.

The 101-0949 is currently marked as Obsolete, making identification of compatible substitute parts essential for ongoing system support, design updates, and procurement planning. Substitute parts must maintain functional equivalence across core processor architecture, speed, memory configuration, and physical connector specifications.

Substiute Parts

101-0949

DigiIn Stock: 1048101-0949 Datasheet

Current PartRFQ

20-101-1051

DigiIn Stock: 117920-101-1051 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 20-101-1051 qualifies as a direct equivalent based on the following criteria:

Matching Parameters (Substitution Basis):

• Identical core processor: Rabbit 3000
• Identical operating speed: 44.2MHz
• Identical RAM capacity: 1MB
• Identical internal flash: 512KB
• Identical connector configuration: 2 IDC Headers 2x17, 1 IDC Header 2x5
• Identical physical dimensions: 1.850" L x 2.730" W (47.00mm x 69.00mm)
• Same manufacturer: Digi
• Same product series: RabbitCore®

Differing Parameters (Non-Critical for Substitution):

• External flash capacity: 16MB (101-0949) vs. 32MB (20-101-1051)
• Operating temperature range: -40°C ~ 70°C (101-0949) vs. 0°C ~ 70°C (20-101-1051)
• RoHS compliance status: Non-compliant (101-0949) vs. Compliant (20-101-1051)
• Product status: Obsolete (101-0949) vs. Last Time Buy (20-101-1051)

The 20-101-1051 provides enhanced external memory capacity and improved environmental compliance, making it suitable for applications where the original 101-0949 is no longer available.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The 20-101-1051 serves as the primary substitute for the obsolete 101-0949. Both modules share identical core processor architecture, speed, memory configuration, and physical form factor, ensuring mechanical and electrical compatibility in existing designs.

Compliance Considerations: The 20-101-1051 is RoHS Compliant, whereas the 101-0949 is RoHS Non-compliant. Systems requiring RoHS compliance must transition to the 20-101-1051. The substitute's Last Time Buy status indicates limited future availability; procurement planning should account for this transition timeline.

Temperature Range Consideration: The 101-0949 supports operation from -40°C to 70°C, while the 20-101-1051 operates from 0°C to 70°C. Applications requiring sub-zero operation must verify that the narrower temperature range of the substitute meets system requirements.

Memory Enhancement: The 20-101-1051 provides 32MB external flash compared to the 101-0949's 16MB. This additional capacity is backward compatible and does not require design modifications; existing firmware will function identically on the substitute module.

Frequently Asked Questions (FAQ)

Q: Can the 20-101-1051 be used as a direct replacement for the 101-0949 in existing designs?

A: Yes. The 20-101-1051 maintains identical core processor, speed, RAM, internal flash, connector configuration, and physical dimensions. No PCB modifications or firmware changes are required for mechanical and electrical compatibility.

Q: What is the impact of the narrower operating temperature range on the 20-101-1051?

A: The 20-101-1051 operates from 0°C to 70°C versus the 101-0949's -40°C to 70°C range. Applications requiring operation below 0°C must verify that the substitute meets environmental specifications before implementation.

Q: Does the additional 16MB external flash on the 20-101-1051 require design changes?

A: No. The increased external flash capacity (32MB vs. 16MB) is fully backward compatible. Existing firmware and memory addressing schemes will function without modification.

Q: What is the significance of the RoHS compliance difference?

A: The 101-0949 is RoHS Non-compliant, while the 20-101-1051 is RoHS Compliant. Systems subject to RoHS regulations must use the 20-101-1051. The compliance upgrade does not affect electrical or mechanical performance.

Q: Why does the 20-101-1051 include an additional D-Picture Card connector?

A: The 20-101-1051 includes an additional xD-Picture Card connector beyond the standard IDC headers. This connector is optional for applications that do not require picture card functionality and does not impact compatibility with designs using only the standard IDC connectors.

Q: What is the procurement timeline for these modules?

A: The 101-0949 is Obsolete with no further availability. The 20-101-1051 is designated Last Time Buy, indicating limited future stock. Immediate procurement is recommended for applications requiring these modules.