EP9312-IBZ Equivalent & Substitute Parts

Part Overview

The EP9312-IBZ is an ARM920T-based microprocessor IC manufactured by Cirrus Logic Inc., designed for embedded applications requiring 32-bit processing at 200MHz. This device integrates a single-core ARM920T processor with comprehensive peripheral support including SDRAM controllers, graphics acceleration, and multiple interface controllers for LCD, keypad, and touchscreen applications. The EP9312-IBZ is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

EP9312-IBZ

Cirrus Logic Inc.In Stock: 1785EP9312-IBZ Datasheet

Current PartRFQ

AT91SAM9263B-CU-100

Microchip TechnologyIn Stock: 8057AT91SAM9263B-CU-100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT91SAM9263B-CU-100 qualifies as a substitute based on the following alignment of critical parameters:

Matching Parameters:

• Processing Architecture: Both devices implement 32-bit ARM-based processors (ARM920T vs. ARM926EJ-S) with equivalent instruction set compatibility for legacy software
• Clock Speed: Identical 200MHz operating frequency
• Core Configuration: Single-core, 32-bit architecture
• RAM Controller Support: Both feature SDRAM controllers for memory interfacing
• Graphics Acceleration: Both include graphics acceleration capabilities
• Operating Temperature Range: Identical -40°C to 85°C specification
• Compliance: Both devices maintain RoHS compliance and REACH unaffected status
• Regulatory Classification: Matching ECCN and HTSUS codes

Functional Equivalence Basis: The AT91SAM9263B-CU-100 provides equivalent embedded processing capability with enhanced peripheral integration, including additional interface options (CAN, I2C, MMC/SD/SDIO, SSC) and expanded voltage support (1.8V, 2.0V, 2.5V, 2.7V, 3.0V, 3.3V) compared to the EP9312-IBZ.

Parameter Comparison

Engineering Selection Recommendations

Selection of the AT91SAM9263B-CU-100 as a substitute for the EP9312-IBZ is supported by the following engineering considerations:

Compliance & Regulatory Alignment: Both devices maintain equivalent regulatory compliance with RoHS standards and REACH unaffected status. The AT91SAM9263B-CU-100 achieves ROHS3 compliance, representing current regulatory requirements. Both devices share identical ECCN and HTSUS classifications, ensuring consistent export and import compliance.

Processor Architecture Compatibility: The ARM926EJ-S core in the AT91SAM9263B-CU-100 represents an evolutionary advancement from the ARM920T, maintaining backward compatibility with 32-bit ARM instruction sets while providing enhanced performance characteristics. Both processors operate at 200MHz, ensuring equivalent timing behavior for legacy software implementations.

Thermal & Environmental Specifications: Identical operating temperature ranges (-40°C to 85°C) ensure equivalent thermal performance in target applications. Both devices maintain MSL 3 moisture sensitivity levels with 168-hour specifications.

Package Consideration: The AT91SAM9263B-CU-100 utilizes a 324-TFBGA (15x15) package compared to the EP9312-IBZ 352-BBGA (27x27) package. This represents a reduction in footprint and pin count while maintaining functional equivalence. PCB layout redesign is required to accommodate the different package geometry and pin assignment.

Frequently Asked Questions (FAQ)

Q: Can the AT91SAM9263B-CU-100 directly replace the EP9312-IBZ without PCB modifications?

A: No. While functionally equivalent, the devices utilize different package types (324-TFBGA vs. 352-BBGA) with different pin counts and physical dimensions. PCB layout redesign is necessary, including trace routing and via placement adjustments to accommodate the smaller 15x15mm footprint of the AT91SAM9263B-CU-100.

Q: Are the peripheral interfaces compatible between these devices?

A: Both devices support core interfaces including SDRAM controllers, graphics acceleration, LCD controllers, and USB 2.0. The AT91SAM9263B-CU-100 provides additional interface options (CAN, I2C, MMC/SD/SDIO, SSC) not present in the EP9312-IBZ. Existing designs utilizing only common interfaces require minimal firmware modification.

Q: What is the impact of the reduced USB port count (3 vs. 2)?

A: The AT91SAM9263B-CU-100 provides two USB 2.0 ports compared to three in the EP9312-IBZ. System designs requiring three simultaneous USB connections must implement external USB hub solutions or redesign peripheral connectivity.

Q: How do the voltage supply requirements differ?

A: The AT91SAM9263B-CU-100 supports expanded I/O voltage options (1.8V, 2.0V, 2.5V, 2.7V, 3.0V, 3.3V) compared to the EP9312-IBZ (1.8V, 3.3V). Existing power supply designs supporting 1.8V and 3.3V operation remain compatible. Additional voltage rails may be utilized for enhanced flexibility in new designs.

Q: What is the Ethernet capability difference?

A: The EP9312-IBZ integrates a single 1/10/100Mbps Ethernet port, while the AT91SAM9263B-CU-100 provides 10/100Mbps capability. Both support standard Ethernet protocols; the EP9312-IBZ offers additional 1Mbps legacy support not present in the substitute.

Q: Are both devices suitable for new design implementations?

A: Both devices carry obsolete product status. For new designs, evaluation of current-generation ARM-based microprocessors is recommended. These substitutes are appropriate for legacy system support, maintenance production, and field replacements where existing software and hardware designs are established.