EPC1441T32 - 440kb OTP Configuration PROM, 32-TQFP | Intel / Altera
MPN： EPC1441T32 ✗ 停產EPC1441T32 概覽
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.
直接替換替代品，適用於 EPC1441T32 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPC1441T32 （相同外形與佔位） — 差異在於 Package, Supply Voltage, Memory Size, Memory Type, Configuration Interface.
EPC1441TI32
✅ 直接替換聯絡詢價
查看資料表 →EPC1441TI32N
✅ 直接替換聯絡詢價
查看資料表 →EPC1064TC32
✅ 直接替換聯絡詢價
查看資料表 →EPC1441T32 最大額定值與電氣特性
| 功能 | OTP Configuration PROM for FPGAs |
| 記憶體容量 | 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) |
| 封裝 | 32-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40C to +85C (industrial) |
| 供應電壓 | 3.3 V (FPGA-bank compatible) |
| Internal Oscillator | Yes |
| Configuration Mode | Serial |
| 腳位數 | 32 |
| Byte Count (approx.) | 55 KB (440 kb / 8) |
| Programming Method | JTAG / Altera programming tools |
EPC1441T32 腳位配置
| 腳位 1 | DCLK — Configuration clock output to target FPGA |
| 腳位 2 | DATA0 — Serial data output to target FPGA |
| 腳位 3 | nCONFIG — Configuration control input from FPGA |
| 腳位 4 | nSTATUS — Configuration status output to FPGA |
| 腳位 5 | OE — Output enable (active low) |
| 腳位 6 | nCE — Chip enable (active low) |
| 腳位 7 | GND — Ground |
| 腳位 8 | VCC — 3.3 V supply voltage |
| 腳位 9 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 10 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 11 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 12 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 13 | GND — Ground |
| 腳位 14 | GND — Ground |
| 腳位 15 | VCC — 3.3 V supply voltage |
| 腳位 16 | VCC — 3.3 V supply voltage |
| 腳位 17 | VPP — Programming voltage supply |
| 腳位 18 | TMS — JTAG test mode select |
| 腳位 19 | TCK — JTAG test clock |
| 腳位 20 | TDI — JTAG test data in |
| 腳位 21 | TDO — JTAG test data out |
| 腳位 22 | NC — Not connected (per datasheet) |
| 腳位 23 | NC — Not connected (per datasheet) |
| 腳位 24 | NC — Not connected (per datasheet) |
| 腳位 25 | NC — Not connected (per datasheet) |
| 腳位 26 | GND — Ground |
| 腳位 27 | GND — Ground |
| 腳位 28 | VCC — 3.3 V supply voltage |
| 腳位 29 | VCC — 3.3 V supply voltage |
| 腳位 30 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 31 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
| 腳位 32 | RESERVED — Reserved pin - leave open or tie to GND per datasheet |
典型應用
EPC1441T32 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 EPC1441T32 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Highest-density legacy OTP PROM in the 32-TQFP package (對比EPC1064TC32)
- Identical electrical and pinout compatibility (對比EPC1441TI32)
- Drop-in on the 32-TQFP footprint with no layout changes required (對比EPC1441LC20)
設計說明
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.
合規資訊
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.