EP9315-IBZ Equivalent & Substitute Parts

Part Overview

The EP9315-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 graphics acceleration, multiple interface controllers (LCD, keypad, touchscreen), and comprehensive connectivity options including Ethernet, USB 2.0, and various serial interfaces. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

EP9315-IBZ

Cirrus Logic Inc.In Stock: 9143EP9315-IBZ Datasheet

Current PartRFQ

AT91SAM9263B-CU-100

Microchip TechnologyIn Stock: 8057AT91SAM9263B-CU-100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EP9315-IBZ is determined by the following critical parameters:

Processing Architecture & Performance: The substitute must maintain 32-bit processing capability at 200MHz operational frequency to ensure software compatibility and system performance equivalence.

Package Compatibility: The original 352-PBGA (27x27) package constrains physical board layout. Substitutes with different package geometries (such as 324-TFBGA) require PCB redesign and are classified as functional alternatives rather than direct pin-compatible replacements.

Voltage & Power Specifications: I/O voltage compatibility (1.8V, 3.3V minimum support) ensures signal integrity across interface circuits.

Interface & Connectivity: Graphics acceleration, LCD/display controllers, Ethernet (minimum 10/100Mbps), USB 2.0, and serial interfaces (UART, SPI, I2C) define the functional scope for substitution.

Regulatory Compliance: RoHS compliance status and REACH classification must align with the original specification.

Operating Temperature Range: The -40°C to 85°C specification must be maintained for environmental equivalence.

The AT91SAM9263B-CU-100 qualifies as a functional substitute based on matching core performance metrics, though package differences necessitate design modifications.

Parameter Comparison

Engineering Selection Recommendations

Functional Equivalence: The AT91SAM9263B-CU-100 provides functional substitution for the EP9315-IBZ based on matching 32-bit, 200MHz processing capability and core interface requirements. Both devices are classified as obsolete with current inventory availability.

Compliance Alignment: Both parts maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements. The AT91SAM9263B-CU-100 meets ROHS3 (newer standard), providing enhanced compliance posture.

Design Considerations: Direct pin-for-pin replacement is not possible due to package differences (352-PBGA vs. 324-TFBGA). System redesign is required, including PCB layout modifications and firmware validation against the ARM926EJ-S architecture.

Interface Trade-offs: The substitute provides equivalent Ethernet and USB connectivity for most applications, though USB port count is reduced from 3 to 2. Ethernet lacks 1Mbps mode support. Additional interfaces (CAN, MMC/SD/SDIO, I2C, ISI) are available on the substitute, potentially enabling enhanced functionality.

Temperature & Power: Operating temperature range and I/O voltage specifications are maintained, ensuring environmental and electrical compatibility within specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the AT91SAM9263B-CU-100 be used as a direct replacement without PCB modifications?

A: No. The EP9315-IBZ uses a 352-PBGA (27x27) package while the AT91SAM9263B-CU-100 uses a 324-TFBGA (15x15) package. PCB redesign is required for physical and electrical integration.

Q: Are there differences in processing performance between these devices?

A: Both operate at 200MHz with 32-bit architecture. The AT91SAM9263B-CU-100 uses the ARM926EJ-S core (newer generation) compared to the ARM920T in the EP9315-IBZ. Software compatibility requires validation against the ARM926EJ-S instruction set.

Q: What interface capabilities are lost or gained with substitution?

A: The substitute reduces USB ports from 3 to 2 and removes 1Mbps Ethernet mode. Gained capabilities include CAN bus, MMC/SD/SDIO support, I2C, and ISI interfaces. LCD and graphics acceleration are maintained.

Q: Are both parts currently available for procurement?

A: Both devices are classified as obsolete. Current inventory availability is documented as 9088 pcs for EP9315-IBZ and 8017 pcs for AT91SAM9263B-CU-100. Availability may diminish over time.

Q: What voltage levels must be supported for compatibility?

A: The EP9315-IBZ requires 1.8V and 3.3V I/O support. The AT91SAM9263B-CU-100 supports a broader range (1.8V, 2.0V, 2.5V, 2.7V, 3.0V, 3.3V), ensuring compatibility with existing 1.8V/3.3V designs.

Q: Is firmware modification necessary when switching to the substitute?

A: Yes. The processor core change from ARM920T to ARM926EJ-S requires firmware validation and potential modification. Bootloader, kernel, and application code must be tested on the target architecture.