AT17C512A-10JI

Overview

The AT17C512A-10JI is a 512-Kbit serial EEPROM configurator designed for Altera FLEX devices. It operates at 5V with an industrial temperature range of -40°C to +85°C. The device is housed in a 20-lead Plastic J-leaded Chip Carrier (PLCC) package. Key specifications include a maximum clock frequency of 15 MHz in slave mode and 250 ns DCLK high/low times in master mode. It features a system-friendly READY pin, programmable reset polarity, and supports cascading for higher-density configurations.

Feature Summary

• Provides simple serial interface for configuring Altera FLEX SRAM-based FPGAs
• Supports cascading read-back capabilities for multi-device configuration chains
• Features a system-friendly READY pin indicating power-on reset status completion
• Allows user-programmable reset polarity via internal EEPROM bytes

Applications

• Configuration memory for Altera FLEX EPF6K and EPF10K devices
• System master or slave configuration for FPGA loading operations
• Cascaded configuration setups requiring multiple EEPROM units

Procurement Notes

Verify the specific ordering suffix 'JI' corresponds to the Industrial temperature range (-40°C to +85°C) and 20-lead PLCC package as defined in the official Microchip/Atmel ordering guide. Confirm that the 5V supply voltage requirement aligns with the target system design, as this component is distinct from the 3.3V LV variants. Ensure compatibility with existing Altera FPGA protocols before procurement.

Selection Notes

Select this component when configuring Altera FLEX devices requiring 512-Kbit capacity. Choose the 'C' variant for commercial temperature ranges if environmental conditions permit. Consider the 'LV' series if the system operates exclusively at 3.3V. Verify that the 20-lead PLCC footprint matches the PCB layout, noting that TQFP packages are not available for this specific density.

Part Context

This part belongs to the AT17A Series of FPGA Configuration EEPROMs. It serves as a non-volatile memory solution specifically optimized for storing configuration bitstreams for Field Programmable Gate Arrays. The series distinguishes between 5V ('C') and 3.3V ('LV') versions, with the 'JI' suffix denoting industrial grade performance and plastic leaded chip carrier packaging.

Replacement Considerations

The AT17C512A-10PC is the PDIP equivalent for commercial temperatures. For industrial temperatures, the AT17C512A-10PI offers the same electrical characteristics in an 8-lead PDIP package. Direct pin-compatible replacements within the same package type require matching the voltage and temperature suffixes exactly.