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Product Detailed Parameters
- Description：IC SER CONFIG PROM 256K 20PLCC
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Programmable Type：Serial EEPROM
- Memory Size：256Kb
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-LCC (J-Lead)
- Supplier Device Package：20-PLCC (9x9)
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Overview
The AT17C256A-10JI is a 256-kilobit 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 features a 2-wire serial interface and supports in-system programming via the SER_EN pin. It provides read-back capabilities and allows cascading for higher-density configurations. The memory organization is 32K x 8, packaged in a 20-lead PLCC.
Feature Summary
- Supports in-system programming via a 2-wire serial bus
- Enables cascading for expanded configuration arrays
- Allows programmable reset polarity selection
- Includes internal write-protection mechanisms
Applications
- Configuring Altera FLEX FPGA devices
- Storing configuration programs for SRAM-based FPGAs
- Cascaded multi-device FPGA configuration systems
Procurement Notes
Verify that the component matches the specific Atmel datasheet specifications for the AT17C256A series. Confirm the package type is the 20-lead PLCC variant. Ensure the operating voltage requirements align with the 5V nominal supply design. Check for any export restrictions or additional documentation required for procurement.
Selection Notes
Select this part when configuring Altera FLEX devices requiring 256-kilobit capacity. Choose the industrial grade version for environments between -40°C and +85°C. Consider cascading options if larger configuration data storage is needed. Verify compatibility with existing Altera FPGA control signals.
Part Context
This component belongs to the AT17A Series low-density configurators manufactured by Atmel. It serves as a specialized memory solution for field-programmable gate array configuration. The series includes 64K, 128K, and 256K bit variants. It emulates earlier serial EEPROM standards for legacy compatibility.
Replacement Considerations
The AT17LV256A-10JI is the 3.3V equivalent within the same family. For direct replacement in 5V systems, verify signal levels match. Consult application notes for conversion details regarding Altera EPC1213 equivalents.
