AT17C020A-10JC

Overview

The AT17C020A-10JC is a 2M-bit serial EEPROM configurator designed for Altera FLEX devices. It operates at 5V with a commercial temperature range of 0°C to 70°C. The device features an internal oscillator, programmable reset polarity, and a system-friendly READY pin. It supports in-system programming via a 2-wire bus and provides cascading capabilities for higher-density arrays.

Feature Summary

• Stores configuration programs for Field Programmable Gate Arrays (FPGAs) using EE reprogrammable serial memory.
• Enables simple interface to SRAM FPGAs with direct control signals for address counters and output buffers.
• Supports cascaded read-back configurations to accommodate additional or future higher-density arrays.
• Allows user-programmable reset polarity through internal EEPROM bytes.

Applications

• Configuration of Altera FLEX devices
• In-system programming via 2-wire bus
• Cascaded FPGA configuration chains

Procurement Notes

Verify the specific suffix 'JC' corresponds to the 5V commercial grade operating range of 0°C to 70°C. Confirm package type matches the 20-lead Plastic J-leaded Chip Carrier (PLCC). Ensure compatibility with the target FPGA's voltage requirements and protocol specifications before integration.

Selection Notes

Select this component when configuring Altera FLEX devices requiring 2M-bit capacity. Choose the 5V version for systems operating at nominal 5V supply. Consider the industrial grade variant if operation below 0°C is required. Verify that the PLCC package fits the PCB layout constraints.

Part Context

This part belongs to the AT17A Series of FPGA Configuration EEPROMs manufactured by Atmel (now Microchip Technology). These configurators provide cost-effective memory solutions for programming SRAM-based FPGAs without external controllers.

Replacement Considerations

The datasheet notes that 2M density parts can replace Altera EPC2 devices. Verify electrical compatibility and pinout alignment when substituting other configurator families.

FAQ

How does the device handle power-up reset?

The READY pin serves as an open-collector indicator driven Low during the power-on reset cycle and released when complete.

Can multiple units be linked together?

Yes, the nCASC pin allows daisy-chaining multiple AT17A Series devices to support configurations exceeding single-device capacity.