C8051F527-IM Equivalent & Substitute Parts

Part Overview

The C8051F527-IM is an 8-bit microcontroller from Silicon Labs' C8051F52x series, featuring a 25MHz 8051 core with 2KB FLASH program memory and 256 bytes of RAM. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The C8051F527A-IM serves as the direct successor, offering enhanced specifications while maintaining core functional compatibility.

Substiute Parts

C8051F527-IM

Silicon LabsIn Stock: 743C8051F527-IM Datasheet

Current PartRFQ

C8051F527A-IM

Silicon LabsIn Stock: 1675C8051F527A-IM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The C8051F527A-IM qualifies as a direct substitute for the C8051F527-IM based on the following criteria:

Identical Parameters:

• Core processor architecture (8051)
• Core size (8-Bit)
• Operating frequency (25MHz)
• Program memory type and size (2KB FLASH)
• RAM capacity (256 x 8)
• Data converter specification (A/D 6x12b)
• Connectivity interfaces (SPI, UART/USART)
• I/O count (6 pins)
• Mounting type (Surface Mount)
• Package designation (10-VFDFN Exposed Pad)
• Operating temperature range (-40°C ~ 125°C)
• Series classification (C8051F52x)

Enhanced Specifications:

• Voltage supply range expanded from 2V ~ 5.25V to 1.8V ~ 5.25V
• Product status upgraded from Obsolete to Active
• RoHS3 compliance and REACH unaffected status confirmed

Parameter Comparison

Engineering Selection Recommendations

The C8051F527A-IM is the appropriate selection for applications currently using or requiring the C8051F527-IM. The substitute part maintains full functional and pin compatibility while offering the following advantages:

• Active product status ensures continued availability and manufacturing support
• Extended minimum supply voltage (1.8V vs. 2V) provides greater operational flexibility in low-power applications
• RoHS3 compliance and REACH unaffected status satisfy modern regulatory requirements
• Identical core architecture, memory configuration, and peripheral set eliminate redesign requirements

Both devices share identical package specifications (10-VFDFN Exposed Pad), operating temperature range, and electrical characteristics relevant to circuit integration. The voltage supply range expansion of the C8051F527A-IM represents an enhancement rather than a limitation, maintaining backward compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the C8051F527A-IM be used as a direct replacement for the C8051F527-IM?

A: Yes. Both devices share identical core processor architecture, memory configuration, I/O count, package designation, and operating temperature range. The C8051F527A-IM is the active production equivalent.

Q: What is the difference in voltage supply specifications?

A: The C8051F527-IM operates from 2V to 5.25V, while the C8051F527A-IM operates from 1.8V to 5.25V. This expanded lower voltage limit in the substitute part does not affect compatibility with existing 2V minimum designs.

Q: Are the packages identical?

A: Yes. Both parts use the 10-VFDFN Exposed Pad package with identical pinout and mechanical dimensions.

Q: What is the significance of the product status change from Obsolete to Active?

A: The Active status of the C8051F527A-IM indicates ongoing manufacturing support, availability assurance, and compliance with current regulatory standards. The Obsolete status of the C8051F527-IM indicates end-of-life status with limited future availability.

Q: Are there any firmware or software compatibility concerns?

A: No. Both devices implement the same 8051 core architecture with identical memory organization and peripheral configuration, ensuring software compatibility at the binary level.

Q: Do both parts meet the same regulatory compliance standards?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8542.31.0001) classifications. The C8051F527A-IM additionally confirms RoHS3 compliance and REACH unaffected status.