EP9301-CQZ Equivalent & Substitute Parts

Part Overview

The EP9301-CQZ is an ARM920T-based microprocessor manufactured by Cirrus Logic Inc., designed for embedded applications requiring 32-bit processing at 166MHz. This device integrates SDRAM controllers, dual USB 2.0 ports, and 10/100Mbps Ethernet connectivity in a 208-LQFP surface mount package. The EP9301 series is classified as obsolete, making equivalent substitute parts necessary for ongoing system support, redesigns, and new production requirements.

Substiute Parts

EP9301-CQZ

Cirrus Logic Inc.In Stock: 1496EP9301-CQZ Datasheet

Current PartRFQ

R7S721031VCFP#AA0

Renesas Electronics CorporationIn Stock: 1288R7S721031VCFP#AA0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The R7S721031VCFP#AA0 qualifies as an equivalent substitute based on the following alignment of critical parameters:

Mechanical Compatibility: Both devices utilize 208-pin LQFP surface mount packaging, enabling direct PCB footprint compatibility without layout modifications.

Functional Integration: Both microprocessors provide 32-bit architecture with single-core processing, SDRAM memory controllers, dual USB 2.0 ports, and 10/100Mbps Ethernet connectivity. These core functional elements remain consistent across the substitution.

Electrical Interface: Both devices operate with 3.3V I/O voltage, a common industrial standard. The substitute supports an extended voltage range (1.2V, 3.3V) and expanded operating temperature range (-40°C ~ 85°C), providing enhanced environmental tolerance.

Compliance & Certification: Both parts maintain RoHS compliance, identical ECCN classification (3A991A2), and matching HTSUS codes (8542.31.0001), ensuring regulatory and trade compliance equivalence.

Product Availability: The substitute part (R7S721031VCFP#AA0) maintains active product status with current inventory availability, addressing the obsolescence of the EP9301-CQZ.

Parameter Comparison

Engineering Selection Recommendations

The R7S721031VCFP#AA0 is suitable for EP9301-CQZ replacement applications based on the following engineering criteria:

Regulatory Compliance: Both parts maintain identical ECCN and HTSUS classifications, ensuring no change to export control or tariff treatment. The substitute achieves ROHS3 compliance, meeting current environmental standards.

Product Lifecycle Status: The substitute part maintains active manufacturing status with confirmed inventory availability, eliminating supply chain risk associated with the obsolete EP9301-CQZ.

Mechanical Interface: Identical 208-LQFP packaging ensures PCB footprint compatibility without redesign requirements.

Functional Equivalence: Both devices provide the core embedded processing architecture, memory control, and peripheral connectivity required for typical EP9 series applications.

Frequently Asked Questions (FAQ)

Q: Can the R7S721031VCFP#AA0 replace the EP9301-CQZ in existing designs without PCB modifications?

A: Yes. Both devices use 208-LQFP surface mount packaging with identical pin counts and footprint dimensions, enabling direct substitution without PCB layout changes.

Q: What are the key differences between these microprocessors?

A: The substitute features a higher clock speed (400MHz vs. 166MHz), ARM Cortex-A9 architecture (vs. ARM920T), extended operating temperature range (-40°C to 85°C vs. 0°C to 70°C), and additional memory controller support (SRAM in addition to SDRAM). These represent functional enhancements rather than compatibility barriers.

Q: Are there voltage compatibility concerns?

A: Both devices support 3.3V I/O operation, the standard interface voltage for most embedded systems. The substitute's extended voltage range (1.2V, 3.3V) provides additional flexibility without creating incompatibility.

Q: Does the substitute maintain the same regulatory classification?

A: Yes. Both parts share identical ECCN (3A991A2) and HTSUS (8542.31.0001) codes, ensuring equivalent export control and tariff treatment.

Q: Is the substitute part currently available?

A: Yes. The R7S721031VCFP#AA0 maintains active product status with 1184 units in current inventory, addressing the obsolescence of the EP9301-CQZ.

Q: What packaging format is supplied for the substitute part?

A: The R7S721031VCFP#AA0 is supplied in tray packaging, standard for high-volume embedded processor distribution.