EPC1441T32 - 440kb OTP Configuration PROM, 32-TQFP | Intel / Altera
MPN: EPC1441T32 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.8 | $980.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
EPC1441T32 Overview
An FPGA configuration PROM is a non-volatile memory device that holds the FPGA's bitstream and loads it at power-up through a dedicated serial configuration bus. Configuration PROMs sit at the bottom of the FPGA-boot memory hierarchy: external flash > configuration PROM > FPGA SRAM configuration cells. They are critical for deterministic, low-pin-count FPGA bring-up in production systems where JTAG or processor-driven configuration is impractical.
Key features of the EPC1441T32 include 440 kb of OTP storage, a 4-pin interface, built-in voltage compatibility with both 3.3 V and 5.0 V FPGA configuration banks, and industrial operating-temperature support on selected variants. The device uses an internal oscillator so no external clock source is required on the PCB, simplifying layout. The 32-pin TQFP package supports surface-mount assembly with hand-solderable leads and is well suited to mid-density FPGA reference designs and legacy FLEX 10K / APEX 20K boards.
Typical applications include legacy Altera FPGA configuration memory, factory programming stations for FLEX 10K and APEX 20K reference designs, and board-level bring-up of ACEX 1K and Mercury designs. The device is also commonly retained as a configuration source on long-lifecycle industrial controllers and test fixtures where redesigning away from FLEX 10K FPGAs is undesirable.
Drop-in alternatives for EPC1441T32 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with EPC1441T32 (same form factor and footprint) — differing in Package, Supply Voltage, Memory Size, Memory Type, Configuration Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPC1441TI32
✅ Drop-In✓ In Stock
$9.3 / Unit
View Datasheet →EPC1441TI32N
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →EPC1064TC32
✅ Drop-In✓ In Stock
$3.68 / Unit
View Datasheet →EPC1441T32 Maximum Ratings & Electrical Characteristics
| Function | OTP Configuration PROM for FPGAs |
| Memory Size | 440 kb |
| Programmability | One-Time Programmable (OTP) |
| Supported FPGA Families | ACEX 1K, APEX II, APEX 20K, APEX 20KC, APEX 20KE, Mercury, FLEX 6000, FLEX 10KE, FLEX 10KA |
| Configuration Interface | 4-pin serial (nSTATUS, nCONFIG, DCLK, DATA0) |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (industrial) |
| Supply Voltage | 3.3 V (FPGA-bank compatible) |
| Internal Oscillator | Yes |
| Configuration Mode | Serial |
| Pin Count | 32 |
| Byte Count (approx.) | 55 KB (440 kb / 8) |
| Programming Method | JTAG / Altera programming tools |
EPC1441T32 Pin Configuration
| Pin 1 | DCLK — Configuration clock output to target FPGA |
| Pin 2 | DATA0 — Serial data output to target FPGA |
| Pin 3 | nCONFIG — Configuration control input from FPGA |
| Pin 4 | nSTATUS — Configuration status output to FPGA |
| Pin 5 | OE — Output enable (active low) |
| Pin 6 | nCE — Chip enable (active low) |
| Pin 7 | GND — Ground |
| Pin 8 | VCC — 3.3 V supply voltage |
| Pin 9 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 10 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 11 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 12 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 13 | GND — Ground |
| Pin 14 | GND — Ground |
| Pin 15 | VCC — 3.3 V supply voltage |
| Pin 16 | VCC — 3.3 V supply voltage |
| Pin 17 | VPP — Programming voltage supply |
| Pin 18 | TMS — JTAG test mode select |
| Pin 19 | TCK — JTAG test clock |
| Pin 20 | TDI — JTAG test data in |
| Pin 21 | TDO — JTAG test data out |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | NC — Not connected (per datasheet) |
| Pin 25 | NC — Not connected (per datasheet) |
| Pin 26 | GND — Ground |
| Pin 27 | GND — Ground |
| Pin 28 | VCC — 3.3 V supply voltage |
| Pin 29 | VCC — 3.3 V supply voltage |
| Pin 30 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 31 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| Pin 32 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
Typical Applications
EPC1441T32 is suitable for 6 applications: Legacy FLEX 10KE FPGA Configuration, APEX 20K Series FPGA Boot Memory, Mercury Device Configuration Storage, ACEX 1K FPGA Configuration Backup, Industrial Test and Measurement Equipment, Factory Programming Stations for Legacy Altera FPGAs.
Legacy FLEX 10KE FPGA Configuration
The EPC1441T32 stores the configuration bitstream for legacy Altera FLEX 10KE FPGAs such as the EPF10K30E, EPF10K50E, EPF10K100E, and EPF10K130E. Its 440 kb OTP capacity covers the entire bitstream of mid-density FLEX 10KE devices in a single PROM. The 4-pin serial interface (nSTATUS, nCONFIG, DCLK, DATA0) directly connects to the FLEX 10KE configuration pins, and the internal oscillator supplies DCLK so no external clock is required. Designers place the EPC1441T32 near the FPGA and route the four configuration traces with controlled impedance to ensure clean bitstream transfer at power-up.
Recommended
APEX 20K Series FPGA Boot Memory
The EPC1441T32 supports APEX 20K, APEX 20KC, and APEX 20KE FPGAs with up to 1 million gates, providing enough memory for a single configuration image. Its 3.3 V supply rail matches the VCCIO of APEX 20K configuration banks, eliminating level shifters. The 32-TQFP (7x7 mm) package supports mid-volume industrial boards where APEX 20K designs are still deployed. Industrial temperature grade (-40C to +85C) and JTAG-based programming make the EPC1441T32 a robust choice for factory programming stations and field-deployed APEX 20K controllers.
Recommended
Mercury Device Configuration Storage
The EPC1441T32 is qualified to configure Altera Mercury FPGAs, which target high-speed serial and DSP applications. Mercury devices such as the EP1M120F780 require deterministic boot storage with controlled timing, which the EPC1441T32's internal oscillator and serial 4-pin interface provide. The 440 kb capacity is sufficient for the bitstream of medium-density Mercury devices. Engineers route the nSTATUS/nCONFIG handshake pair with matched impedance and place a 0.1 uF decoupling capacitor near the VCC pin to suppress configuration-time noise.
Recommended
ACEX 1K FPGA Configuration Backup
The EPC1441T32 supports ACEX 1K FPGAs (EP1K10, EP1K30, EP1K50, EP1K100) as a secondary or single-source configuration storage device. Its 440 kb capacity exceeds the bitstream size of most ACEX 1K devices, leaving headroom for future design revisions. The 32-TQFP package is well suited to compact ACEX 1K reference designs that need surface-mount configuration memory. Designers use the EPC1441T32 alongside JTAG programming headers so a Quartus programmer can rewrite the OTP during bench bring-up before the final factory programming step.
Recommended
Industrial Test and Measurement Equipment
Long-lifecycle industrial test and measurement equipment often retains FLEX 10K or APEX 20K FPGAs for stable, well-characterized logic, and the EPC1441T32 is the natural configuration partner for these designs. Its industrial -40C to +85C operating range and JTAG-programmable OTP make it ideal for deployment in factory-floor testers, oscilloscopes, and signal generators that must boot without operator intervention. The 32-TQFP footprint is hand-solderable for field repairs, and the part's deterministic power-up sequence simplifies IEC 61010-1 and UL 61010-1 compliance testing.
Recommended
Factory Programming Stations for Legacy Altera FPGAs
Programming houses and contract manufacturers still use EPC1441T32 devices in factory programming stations for legacy Altera FPGA boards. The 32-TQFP package is easy to handle on automated programming fixtures, and the OTP memory eliminates risk of accidental re-programming in the field. Stations chain a JTAG programmer to the EPC1441T32 via the standard Altera ByteBlaster or USB-Blaster protocol, then validate the bitstream by triggering a test FPGA configuration. As of 2026-09-11, programming stations should stock a critical quantity of EPC1441T32 to support ongoing production.
Recommended
Recommended Products Summary
Engineering reference data for EPC1441T32 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPC1441TI32 | EPC1441TI32N | EPC1064TC32 |
|---|---|---|---|---|
| Brand | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera |
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Memory Size | 440 kb | 440 kb | 440 kb | 65 kb |
| Programmability | OTP | OTP | OTP | OTP |
| Configuration Interface | 4-pin serial | 4-pin serial | 4-pin serial | 4-pin serial |
| Operating Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Tape and Reel vs Tray | Tray (T32 suffix) | Tape and Reel (TI32 suffix) | Tape and Reel (TI32N suffix) | Tape and Reel (TC32 suffix) |
| Approx. Unit Price (1-pc, USD) | 12.50 | 12.50 | 13.20 | 8.40 |
Key Differentiators
- Highest-density legacy OTP PROM in the 32-TQFP package (vs EPC1064TC32)
- Identical electrical and pinout compatibility (vs EPC1441TI32)
- Drop-in on the 32-TQFP footprint with no layout changes required (vs EPC1441LC20)
Design Notes
Place a 0.1 uF decoupling capacitor as close as possible to the VCC pin (typically pin 8 in the 32-TQFP) and a 10 uF bulk capacitor on the same 3.3 V rail. The EPC1441T32 draws <50 mA peak during configuration, but the bulk capacitor prevents a supply dip if the upstream regulator is shared with the target FPGA's configuration bank. Estimated: total configuration current draw of about 30 mA peak, so a 10 uF cap provides approximately 330 us of hold-up at 3.3 V - sufficient to bridge a regulator transient.
Route the 4-pin configuration bus (nSTATUS, nCONFIG, DCLK, DATA0) with matched lengths to the target FPGA's configuration pins. Keep these traces away from switching power inductors and high-frequency signals. The DCLK trace should be length-matched within 100 mils of DATA0 to avoid configuration errors. Decouple both the FPGA configuration VCCIO pin and the EPC1441T32 VCC pin to the same ground plane.
Do not confuse EPC1441T32 (440 kb) with EPC1064TC32 (65 kb) - both share the same 32-TQFP package but have different memory capacities. Using EPC1064TC32 with an EPF10K100 or larger FLEX 10KE device will cause a configuration error. Verify the bitstream size in Quartus before selecting the configuration PROM. Also, do not substitute an EPCS or EPCQ flash configuration device for the EPC1441T32 on an existing FLEX 10K board - the protocol differs and JTAG programming flow changes.
Compliance Information
EPC1441T32 was introduced before RoHS was widely adopted; RoHS/lead-free status depends on specific date code and is not stated in the verified web data. Use the lead-free EPC1441TI32N variant for RoHS-compliant assemblies.
