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Microchip Technology AT17F16A-30JU
- Part No.:
- AT17F16A-30JU
- Manufacturer:
- Microchip Technology
- Category:
- Configuration PROMs for FPGAs
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
AT17F16A-30JU.pdf
- Description:
- IC FLASH CONFIG 16M 20PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT17F16A-30JU from Atmel is a 16-Mbit (16,777,216 × 1-bit) in-system programmable serial configuration PROM designed to store FPGA bitstreams for SRAM-based FPGAs including Altera Cyclone™, Stratix®, and APEX™ devices. It operates at 3.3 V ±10%, supports 5 V–tolerant I/O pins, delivers up to 33 MHz serial download speed, and features cascading capability via nCASC output for multi-device daisy-chain configurations.
For engineers reviewing the AT17F16A-30JU datasheet, AT17F16A-30JU pinout, AT17F16A-30JU application, or AT17F16A-30JU equivalent, key selection criteria include its 20-lead PLCC package, industrial temperature range (−40°C to +85°C), ISP support via 2-wire bus, PAGE_EN–enabled 4-page memory partitioning, and compatibility with Atmel ATDH2200E and third-party programmers.
Technical Context
The AT17F16A-30JU implements a flash-based serial memory architecture optimized for FPGA master serial mode configuration. Its control logic directly interfaces with FPGA DCLK, nCS, and RESET/OE signals-enabling autonomous configuration without external controllers. The device uses internal voltage generation for programming and supports both single-bitstream and quad-page (PAGESEL[1:0] + PAGE_EN) download modes.
It features dual operational modes: SER_EN = High enables FPGA configuration mode (DATA output, DCLK output, nCASC active); SER_EN = Low activates 2-wire ISP mode (A2 used for chip select, DCLK input, DATA bidirectional). Power-up reset is managed by READY (open-collector), and standby current is ≤3 mA when nCS = High and SER_EN = High.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Mbit (16,777,216 × 1-bit) - sufficient for full configuration of mid-to-high-end SRAM FPGAs like Cyclone II/III or Stratix EP1S10. |
| Supply voltage | 3.3 V ±10% - compatible with standard FPGA I/O banks and eliminates need for level-shifting circuitry. |
| Serial download speed | Up to 33 MHz - reduces FPGA configuration time to <100 ms for typical 1–2 Mbit bitstreams. |
| Operating temperature | −40°C to +85°C - qualified for industrial embedded systems and base station control modules. |
| Write endurance | 10,000 write cycles - supports field firmware updates and reconfiguration during system maintenance. |
| Standby current | ≤3 mA - enables low-power retention in always-on configuration storage applications. |
| I/O voltage tolerance | 5 V tolerant inputs - allows direct connection to legacy 5 V control logic without external buffers. |
Pinout & Package
AT17F16A-30JU is packaged in a 20-lead Plastic Leaded Chip Carrier (PLCC), designated as 20J per Atmel documentation. This RoHS-compliant, leaded surface-mount package measures 9.78 mm × 9.78 mm × 3.81 mm (D × E × A), with 1.27 mm lead pitch and JEDEC MS-018 AA compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nCS | Chip Select Input | Active-low enable for configuration data output; controls address counter and places DATA in high-impedance state when deasserted. |
| RESET/OE | Reset / Output Enable | Active-low reset clears address/bit counters; active-high enables DATA driver during configuration. |
| DCLK | Configuration Clock | Output during FPGA config (drives FPGA DCLK); input during ISP mode (synchronizes 2-wire programming). |
| DATA | Bi-directional Serial Data | Three-state open-collector output for FPGA DIN; bidirectional during ISP for serial data exchange. |
| nCASC | Cascade Select Output | Drives nCS of next device in daisy chain; goes low after final bit to enable cascaded PROMs automatically. |
| SER_EN | Serial Enable Input | High = FPGA config mode; Low = 2-wire ISP mode; internal pull-up ensures safe default operation. |
| PAGE_EN | Page Enable Input | High enables 4-page memory partitioning (each 4 Mbit); required for multi-bitstream storage and selective reconfiguration. |
| PAGESEL[1:0] | Page Select Inputs | Binary-selects one of four 4 Mbit pages when PAGE_EN = High; no effect in flat-address mode. |
| READY | Power-on Reset Indicator | Open-collector output driven low during power-up reset; released when internal logic is stable (requires 4.7 kΩ pull-up). |
| VCC / GND | Power / Ground | 3.3 V supply with recommended 0.2 µF decoupling capacitor between VCC and GND for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability (ISP) | Enables field reprogramming via 2-wire serial interface without removing device from PCB - critical for remote FPGA updates. |
| Cascadable read-back | Automatic nCASC assertion triggers next PROM in chain - eliminates need for external sequencing logic in multi-FPGA systems. |
| Quad-page memory architecture | Four independent 4 Mbit pages selectable via PAGE_EN and PAGESEL[1:0] - supports boot, backup, and feature-specific bitstreams in one device. |
| 5 V–tolerant I/O | Accepts 5 V control signals on nCS, RESET/OE, DCLK, and PAGE pins - simplifies integration with mixed-voltage industrial control boards. |
| Emulation of AT24CXXX EEPROMs | Compatible with standard I²C EEPROM command sets - allows reuse of existing EEPROM programming infrastructure and firmware drivers. |
Applications
| Industrial PLC Configuration Storage | Telecom Baseband FPGA Reconfiguration |
|---|---|
Use Scenario: Storing multiple FPGA configuration images for redundant control logic and firmware rollback in programmable logic controllers. IC Role / Device Role / Timing Role: Serial configuration PROM providing master-serial bitstream delivery to Xilinx Spartan or Altera Cyclone FPGAs at power-up or on-command. Use Value: Quad-page architecture enables instant switching between safety-critical and diagnostic bitstreams without external memory management. | Use Scenario: Supporting dynamic partial reconfiguration of DSP and protocol processing FPGAs in 4G/LTE radio units. IC Role / Device Role / Timing Role: Cascaded AT17F16A-30JU devices deliver sequential bitstreams to multi-FPGA signal processing chains under host processor control. Use Value: nCASC-driven daisy-chain eliminates timing skew and synchronization overhead across 3+ FPGA configuration stages. |
| Medical Imaging FPGA Boot Loader | Defense Radar Signal Processing |
Use Scenario: Secure, tamper-resistant storage of validated FPGA configurations for CT/MRI image reconstruction pipelines. IC Role / Device Role / Timing Role: Nonvolatile configuration memory with 10,000 write cycles enabling periodic calibration and algorithm updates in FDA-regulated equipment. Use Value: Industrial temperature rating (−40°C to +85°C) and RoHS-compliant green packaging meet medical EMC and environmental compliance requirements. | Use Scenario: Field-upgradable radar waveform generators using Stratix or APEX FPGAs deployed in airborne and ground-mobile platforms. IC Role / Device Role / Timing Role: High-speed (33 MHz) serial PROM delivering encrypted bitstreams to FPGAs during cold start or mission reload sequences. Use Value: 5 V–tolerant control pins interface directly with legacy MIL-STD-1553 or discrete logic sequencers without level translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Xilinx XC18V02 | 2 Mbit capacity, 3.3 V only, no page partitioning, no 5 V–tolerant I/O | Targeted for smaller FPGAs (e.g., Spartan-II); lacks cascading and multi-image support | Select when configuration size ≤2 Mbit and system uses only 3.3 V logic. |
| Microchip (ex-Microsemi) LX1500 | 16 Mbit, but requires external 12 V programming voltage; no 2-wire ISP; different pinout | Used in radiation-tolerant aerospace designs; not drop-in replaceable due to voltage and interface mismatch | Choose only for space-qualified programs requiring TID-hardened nonvolatile memory. |
Compared with XC18V02 and LX1500, the AT17F16A-30JU uniquely combines industrial temperature operation, 5 V–tolerant control inputs, quad-page memory partitioning, and true 2-wire ISP - making it optimal for field-serviceable, multi-configuration embedded FPGA systems.
Availability
AT17F16A-30JU is available at Aetrix Electronics and suitable for industrial PLCs, telecom baseband units, medical imaging systems, defense radar platforms, and FPGA-based test equipment requiring stable component supply across extended product lifecycles.
Supply support for AT17F16A-30JU 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 programmable logic solutions for industrial, automotive, and communications markets.
The AT17FxxA series was designed specifically as FPGA configuration PROMs for SRAM-based devices - emphasizing seamless master-serial interface compatibility, cascading scalability, and in-system reprogrammability without external high-voltage sources.
FAQ
What is the primary function of the AT17F16A-30JU in an FPGA-based system?
The AT17F16A-30JU serves as a dedicated serial configuration PROM that stores and delivers bitstream data to SRAM-based FPGAs during power-up or on-demand reconfiguration. It operates in master-serial mode, driving the FPGA's DCLK and DIN lines directly. Its 16-Mbit capacity supports complex devices like Altera Cyclone III or Stratix EP1S25, and its nCASC output enables automatic daisy-chaining of multiple AT17F16A-30JU units for larger memory requirements.
Does the AT17F16A-30JU support in-system programming, and what interface is required?
Yes, the AT17F16A-30JU supports in-system programming (ISP) via a 2-wire serial interface activated by pulling SER_EN low. In this mode, DCLK becomes an input and DATA operates bidirectionally, while A2 functions as a chip-select input. Programming occurs at the nominal 3.3 V supply - no external high-voltage source is needed, as internal charge pumps generate required programming voltages. The AT17F16A-30JU is supported by Atmel's ATDH2200E kit and industry-standard third-party programmers.
How does the PAGE_EN and PAGESEL[1:0] functionality work in the AT17F16A-30JU?
When PAGE_EN is driven high, the AT17F16A-30JU divides its 16-Mbit address space into four 4-Mbit pages. PAGESEL[1:0] selects which page is active during serial download: 00 → 00000h–3FFFFh, 01 → 40000h–7FFFFh, 10 → 80000h–BFFFFh, 11 → C0000h–FFFFFFh. This enables storage of up to four distinct FPGA bitstreams - such as boot, diagnostic, update, and fallback images - within a single AT17F16A-30JU. When PAGE_EN is low, the full linear address space is used.
What is the purpose of the READY pin on the AT17F16A-30JU, and how should it be used?
READY is an open-collector output that signals the completion of the AT17F16A-30JU's internal power-on reset sequence: it is driven low during reset and released (high-impedance) once internal logic stabilizes. To monitor this signal, a 4.7 kΩ pull-up resistor to VCC is recommended. READY can be connected to an FPGA's INIT_DONE or a system controller's reset manager to synchronize downstream initialization - ensuring configuration begins only after the AT17F16A-30JU is fully ready.
Is the AT17F16A-30JU pin-compatible with other members of the AT17FxxA family, and what packages are supported?
Yes, the AT17F16A-30JU shares identical pinouts and electrical behavior with other AT17F16A variants in the same package type. Specifically, the AT17F16A-30JU uses the 20-lead PLCC (20J) package and is pin-compatible with AT17F16A-30JC and AT17F16A-30JI - both of which Atmel explicitly recommends migrating to the AT17F16A-30JU. It is also functionally identical to the 8-lead LAP variant (AT17F16A-30CU), though package footprint differs.
AT17F16A-30JU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Programmable Type:
- FLASH
- Memory Size:
- 16Mb
- Voltage - Supply:
- 2.97V ~ 3.63V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-PLCC (9x9)
AT17F16A-30JU FAQ
1.How can I place an order for AT17F16A-30JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT17F16A-30JU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT17F16A-30JU reliable?
The price and inventory of AT17F16A-30JU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT17F16A-30JU is usually 5 days.
3.What payment methods are accepted for AT17F16A-30JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT17F16A-30JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT17F16A-30JU?
AT17F16A-30JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT17F16A-30JU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT17F16A-30JU?
For technical support, including AT17F16A-30JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT17F16A-30JU requirements.
6.How does Aetrix verify that AT17F16A-30JU is sourced from the original manufacturer or authorized distributors?
All AT17F16A-30JU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT17F16A-30JU meets industry standards.
7.What is the process for return or replacement of AT17F16A-30JU?
All AT17F16A-30JU units undergo pre-shipment inspection (PSI). If there is an issue with AT17F16A-30JU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT17F16A-30JU part is unused and in its original packaging.
Return procedure for AT17F16A-30JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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