Microchip Technology AT17C002-10CC

Overview

AT17C002-10CC from Atmel is a 2-Mbit (2,097,152 × 1-bit) serial EEPROM FPGA configuration memory designed to store and load bitstreams into SRAM-based FPGAs including Xilinx XC4000™, Spartan®, Virtex™, Altera FLEX®, APEX™, and Atmel AT40K/AT94K devices. It operates at 5V ±5%, supports in-system programming via 2-wire bus, and features programmable reset polarity and a system-friendly READY pin for power-up sequencing.

For engineers reviewing the AT17C002-10CC datasheet, AT17C002-10CC pinout, AT17C002-10CC application, or AT17C002-10CC equivalent, this device serves as a drop-in replacement for legacy XC17/ATT17 PROMs and provides cascading capability for multi-FPGA systems, low-power standby mode (<0.5 mA), and compatibility with industry-standard programmers such as Atmel's ATDH2200E and ATDH2225 ISP Cable.

Technical Context

The AT17C002-10CC implements a serial-access configuration memory architecture interfacing directly with FPGA master serial mode control signals: CLK drives internal address/bit counters, CE enables data output and counter operation, and RESET/OE controls tri-state DATA and resets counters. CEO output enables daisy-chain cascading by driving CE of the next configurator.

It uses a low-power CMOS EEPROM process with internal voltage generation for programming, supports write protection via WP1, and allows polarity selection of RESET/OE through four programmable EEPROM bytes. The READY pin provides open-collector power-good indication, while SER_EN selects between FPGA loading (High) and 2-wire ISP mode (Low).

Key Specifications

Pinout & Package

AT17C002-10CC is packaged in an 8-lead Leadless Array Package (LAP), 6 mm × 6 mm × 1 mm body, pin-compatible with 8-lead SOIC/VOIC footprints. Pin 1 is marked by corner chamfer; leads are coplanar with 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA configuration memory applications.

Compared with AT17LV002-10CC and XCF02SVO20C, the AT17C002-10CC uniquely supports 5V systems, offers field-programmable reset polarity, enables ISP via SER_EN, and provides cascading capability-making it the optimal choice for mixed-vendor, upgradeable, or legacy 5V FPGA platforms.

Availability

AT17C002-10CC is available at Aetrix Electronics and suitable for industrial PLCs, telecommunications line cards, test equipment, and FPGA-based prototyping platforms requiring stable component supply across long product lifecycles.

Supply support for AT17C002-10CC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and FPGA configuration solutions with emphasis on industrial and embedded reliability.

The AT17 Series was designed specifically to replace one-time-programmable PROMs in FPGA configuration systems, delivering reprogrammability, low-power operation, and seamless integration with major FPGA vendors' master-serial protocols.

FAQ

What is the primary function of the AT17C002-10CC in an FPGA-based system?

The AT17C002-10CC serves as a serial configuration memory that stores and loads the bitstream into SRAM-based FPGAs during power-up or reset. It interfaces directly with FPGA control signals (CCLK, DIN, INIT) in Master Serial Mode, eliminating the need for external controllers. Its 2-Mbit capacity supports mid-range devices like Xilinx Spartan or Altera FLEX 10K, and its READY pin ensures reliable power sequencing. The AT17C002-10CC is essential for deterministic, repeatable FPGA initialization in industrial and telecom applications.

Can the AT17C002-10CC be used with 3.3V FPGAs?

No - the AT17C002-10CC is a 5V-only device (4.75–5.25 V nominal), and its I/O thresholds and timing parameters are specified for 5V operation. For 3.3V FPGA systems, the pin-compatible AT17LV002-10CC variant must be used instead. Interfacing AT17C002-10CC directly with 3.3V FPGA I/O may violate VIH/VIL specifications and cause configuration failure or damage. Always match the AT17C002-10CC to 5V FPGA families such as Xilinx XC4000 or legacy Altera devices.

How does the cascading feature work with multiple AT17C002-10CC devices?

Cascading uses the CEO (Chip Enable Output) pin of one AT17C002-10CC to drive the CE (Chip Enable) pin of the next device in the chain. When the first device outputs its final bit, CEO goes Low, enabling the second device's DATA output. Both devices share the same CLK and RESET/OE signals to maintain synchronous readout. This allows combined configuration memory beyond 2 Mbit - for example, two AT17C002-10CC devices provide 4 Mbit total - while preserving single-clock-domain timing integrity required by FPGAs.

Is the AT17C002-10CC pin-compatible with older XC17 or ATT17 PROMs?

Yes - the AT17C002-10CC is explicitly documented as a drop-in replacement for Xilinx XC17 and Atmel ATT17 series PROMs in Xilinx and Lucent FPGA applications. Its 8-lead LAP package matches SOIC footprints used by those legacy parts, and its pin functions (DATA, CLK, CE, RESET/OE) align directly. No PCB changes are required; however, users must confirm reset polarity programming matches the original PROM's behavior, typically active-Low for Xilinx INIT compatibility.

What programming tools support the AT17C002-10CC?

The AT17C002-10CC supports industry-standard programmers including Atmel's ATDH2200E Programming System and ATDH2225 ISP Cable. It also emulates AT24CXXX serial EEPROMs, enabling use with generic I²C-compatible programmers. In-system programming is enabled by pulling SER_EN Low, allowing field updates without removing the device from the board. Programming occurs at VCC voltage only - no external VPP required - and is verified via built-in checksum logic per Atmel's Programming Specification doc0437.pdf.