AT91SAM7XC512-CU Equivalent & Substitute Parts

Part Overview

The AT91SAM7XC512-CU is a 16/32-bit ARM7® microcontroller manufactured by Microchip Technology, featuring 512KB FLASH memory and 128KB RAM in a 100-TFBGA package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for new designs or production continuity. The part integrates CANbus, Ethernet, I2C, SPI, SSC, UART/USART, and USB connectivity with comprehensive peripheral support including DMA, PWM, and watchdog timer functionality.

Substiute Parts

AT91SAM7XC512-CU

Microchip TechnologyIn Stock: 1622AT91SAM7XC512-CU Datasheet

Current PartRFQ

AT91SAM7XC512B-CU

Microchip TechnologyIn Stock: 2165AT91SAM7XC512B-CU Datasheet

DirectRFQ

ATSAM4E8CA-CU

Microchip TechnologyIn Stock: 3440ATSAM4E8CA-CU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT91SAM7XC512-CU is determined by the following critical parameters:

Direct Equivalence Criteria:

• Identical package type (100-TFBGA 9x9)
• Identical program memory capacity (512KB FLASH)
• Identical RAM capacity (128K x 8)
• Compatible voltage supply range
• Surface mount configuration
• Identical operating temperature range (-40°C ~ 85°C)

Functional Compatibility Criteria:

• Same or compatible core processor architecture
• Equivalent or superior peripheral integration
• Matching or compatible connectivity interfaces
• Equivalent or superior I/O count
• RoHS3 compliance maintained

The AT91SAM7XC512B-CU qualifies as a direct equivalent, maintaining identical electrical and mechanical specifications while offering active product status. The ATSAM4E8CA-CU represents a higher-performance alternative with enhanced capabilities, suitable for applications requiring increased processing speed and expanded feature set.

Parameter Comparison

Engineering Selection Recommendations

AT91SAM7XC512B-CU is the preferred direct substitute for AT91SAM7XC512-CU applications. This part maintains identical electrical specifications, package configuration, and memory architecture while offering active product status and continuous manufacturing support. Selection of this part eliminates design modifications and ensures pin-for-pin compatibility. Both parts comply with ROHS3 standards and share equivalent moisture sensitivity levels.

ATSAM4E8CA-CU is recommended for applications requiring enhanced performance or expanded functionality. This part provides 120MHz operation versus 55MHz, increased I/O count (79 versus 62), superior analog-to-digital conversion (16x12b versus 8x10b), and integrated digital-to-analog converters. The expanded voltage supply range (1.62V ~ 3.6V) provides greater design flexibility. Package and mounting configuration remain identical, enabling potential board-level substitution with firmware and software adaptation. This part is actively manufactured and fully compliant with current regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can AT91SAM7XC512B-CU be used as a direct replacement for AT91SAM7XC512-CU?

A: Yes. The AT91SAM7XC512B-CU maintains identical pin configuration, package type (100-TFBGA 9x9), memory specifications (512KB FLASH, 128KB RAM), operating voltage (1.65V ~ 1.95V), and temperature range (-40°C ~ 85°C). No circuit modifications are required for substitution.

Q: What are the key differences between AT91SAM7XC512B-CU and ATSAM4E8CA-CU?

A: The ATSAM4E8CA-CU operates at 120MHz versus 55MHz, features an ARM® Cortex®-M4 core instead of ARM7®, provides 79 I/O pins versus 62, includes 16x12b analog-to-digital conversion and 2x12b digital-to-analog conversion, and supports an expanded voltage range (1.62V ~ 3.6V). Both maintain identical package configuration and 512KB FLASH / 128KB RAM memory.

Q: Is the ATSAM4E8CA-CU pin-compatible with AT91SAM7XC512-CU?

A: Both parts use the 100-TFBGA (9x9) package with identical physical dimensions and mounting type. However, the ATSAM4E8CA-CU provides additional I/O pins (79 versus 62) and different peripheral assignments. Pin-level compatibility must be verified against specific application requirements and datasheet pinout diagrams.

Q: Are all three parts RoHS3 compliant?

A: Yes. AT91SAM7XC512-CU, AT91SAM7XC512B-CU, and ATSAM4E8CA-CU are all ROHS3 compliant with MSL rating 3 (168 Hours).

Q: What is the product status difference between these parts?

A: AT91SAM7XC512-CU is classified as obsolete. AT91SAM7XC512B-CU and ATSAM4E8CA-CU are both active products with ongoing manufacturing and support from Microchip Technology.