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EPCQ4ASI8N

ALTEPCQ4ASI8N

Altera
In System Programmable Configuration PROM for FPGAs 4Mb 8-SOIC
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Overview

The EPCQ4ASI8N is a 4Mb in-system programmable serial configuration device designed to store configuration data for Altera FPGAs. It operates within a voltage range of 2.7V to 3.6V and supports active serial (AS) x1 configuration schemes. This non-volatile memory solution ensures reliable FPGA bitstream loading with over 20-year data retention and high endurance.

Why Choose This Part

It features more than 100,000 program-erase cycles and supports write protection via status register bits for securing sensitive configuration sectors. The device also supports high-speed read operations including fast read, dual input fast read, and quad input fast read to minimize FPGA startup latency.

Applications

FPGA Bitstream Storage
Serves as the primary non-volatile memory for holding the configuration image of Altera FPGAs during power-off states.
AS x1 Configuration
Used in Active Serial x1 mode to automatically load the FPGA at power-up without an external controller.
System Bootloader Storage
Storing boot code or secondary bootloaders for embedded systems utilizing soft-core processors within an FPGA.

Key Specifications

Memory Size 4Mb
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply 2.7V ~ 3.6V
Programmable Type In System Programmable
Operating Temperature -40degC ~ 85degC
Supplier Device Package 8-SOIC

Getting Started

Designers should interface this device using the FPGA AS configuration pins and can program it in-system using the SRunner software driver or Altera USB-Blaster download cables. Ensure the PCB layout maintains signal integrity for the serial clock (DCLK) and data lines, and consult the Intel FPGA Configuration Handbook for specific pin-mapping requirements.

Also Consider

EPCQ16ASI8N Altera (Intel) - Higher capacity 16Mb version for larger FPGA bitstreams or multiple configuration images.
S25FL128S IFXInfineon Technologies - General-purpose SPI Flash that is often used as a cost-effective alternative for FPGA configuration in compatible systems.