ATSAMA5D27B-CN Equivalent & Substitute Parts

Part Overview

The ATSAMA5D27B-CN is an ARM Cortex-A5 microprocessor from Microchip Technology's SAMA5D2 series, operating at 500MHz with 32-bit architecture in a 289-LFBGA package. This embedded processor integrates multimedia co-processing, graphics acceleration, and comprehensive security features including ARM TrustZone, cryptography, and secure memory. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity.

Substiute Parts

ATSAMA5D27B-CN

Microchip TechnologyIn Stock: 940ATSAMA5D27B-CN Datasheet

Current PartRFQ

ATSAMA5D27C-CN

Microchip TechnologyIn Stock: 1000496ATSAMA5D27C-CN Datasheet

DirectRFQ

ATSAMA5D27A-CN

Microchip TechnologyIn Stock: 1087ATSAMA5D27A-CN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ATSAMA5D27B-CN is determined by strict equivalence across the following critical parameters:

• Processor Architecture: ARM Cortex-A5 core with identical instruction set
• Clock Speed: 500MHz operation
• Package Format: 289-LFBGA (14x14) ball grid array
• I/O Voltage: 3.3V supply
• Temperature Range: -40°C to 105°C operating specification
• Series Compatibility: SAMA5D2 family membership
• Interface Set: Identical peripheral controllers (I2C, SPI, UART, USART, QSPI, SMC)
• Memory Controllers: Support for LPDDR1, LPDDR2, LPDDR3, DDR2, DDR3, DDR3L, and QSPI
• Security Features: ARM TrustZone, Boot Security, Cryptography, RTIC, Secure Fusebox, Secure JTAG, Secure Memory, Secure RTC
• Compliance: ROHS3 and REACH compliance status

The ATSAMA5D27B-CN differs from active alternatives only in product status designation. All electrical, mechanical, and functional parameters remain identical across the substitute parts listed.

Parameter Comparison

Engineering Selection Recommendations

The ATSAMA5D27B-CN is functionally and electrically identical to both ATSAMA5D27C-CN and ATSAMA5D27A-CN. The primary distinction is product lifecycle status: the ATSAMA5D27B-CN is designated obsolete, while ATSAMA5D27C-CN and ATSAMA5D27A-CN maintain active status with Microchip Technology.

For new designs and ongoing production, ATSAMA5D27C-CN is the direct substitute, offering identical electrical and mechanical specifications with active product support. ATSAMA5D27A-CN is also a valid alternative with identical performance characteristics and active status.

Both substitute parts maintain full compliance with ROHS3 and REACH requirements, identical MSL rating of 3 (168 Hours), and equivalent security feature sets. Pin-for-pin compatibility and functional equivalence are complete across all three part numbers within the SAMA5D2 series.

Frequently Asked Questions (FAQ)

Q: Can ATSAMA5D27C-CN or ATSAMA5D27A-CN be used as direct replacements for ATSAMA5D27B-CN in existing designs?

A: Yes. All three parts are electrically and mechanically identical. They share the same ARM Cortex-A5 processor core, 500MHz clock speed, 289-LFBGA package, 3.3V I/O voltage, and complete peripheral interface set. No design modifications are required.

Q: What is the difference between ATSAMA5D27C-CN and ATSAMA5D27A-CN?

A: Both parts are functionally equivalent with identical electrical specifications, clock speed, package format, and interface capabilities. The difference is limited to product designation and inventory availability. Both are active products from Microchip Technology.

Q: Are the package dimensions and ball grid layout identical across all three parts?

A: Yes. All three parts use the 289-LFBGA (14x14) package format with identical ball pitch, dimensions, and layout. PCB footprints are interchangeable.

Q: Do all three parts support the same memory controller types?

A: Yes. ATSAMA5D27B-CN, ATSAMA5D27C-CN, and ATSAMA5D27A-CN all support LPDDR1, LPDDR2, LPDDR3, DDR2, DDR3, DDR3L, and QSPI memory controllers without variation.

Q: Are security features identical across all substitute parts?

A: Yes. All three parts include ARM TrustZone, Boot Security, Cryptography, RTIC, Secure Fusebox, Secure JTAG, Secure Memory, and Secure RTC with identical implementation.

Q: What is the operating temperature range for these parts?

A: All three parts operate across -40°C to 105°C (TA), with identical thermal specifications and MSL rating of 3 (168 Hours).

Q: Are there any compliance or certification differences?

A: No. All three parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications.