Altera

EPM7256ATI144-10 - 256-Macrocell CPLD, 3.3V, 144-TQFP | Altera

MPN: EPM7256ATI144-10 ✗ Cuối đời

3.3 V Vdss 144-pin TQFP Package 93.5 MHz Speed EEPROM (non-volatile) Memory

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EPM7256ATI144-10 Tóm tắt

The Altera EPM7256ATI144-10 is a high-performance, 3.3-V, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000A family, providing 256 macrocells, 16 Logic Array Blocks (LABs), and a 10 ns pin-to-pin delay in a 144-pin TQFP package. It supports up to 5,000 usable gates and operates across an industrial temperature range of -40C to +85C, making it suitable for demanding embedded and communications applications.

A CPLD (Complex Programmable Logic Device) is a non-volatile, instantly-on semiconductor that combines the deterministic timing of PAL/GAL architecture with the density and flexibility of an FPGA-like fabric, but with much faster I/O setup. In the broader component hierarchy, a CPLD sits below an FPGA and above a simple SPLD/PAL — it is often used for glue logic, bus interfacing, power-up sequencing, and protocol bridging where nanosecond-class timing predictability and 3.3-V in-system programmability are required.

Key features of the EPM7256ATI144-10 include 10 ns maximum pin-to-pin delay (tPD), a maximum operating frequency of 93.5 MHz (fCNT), 100 user I/O pins (68 standard I/O plus JTAG and dedicated pins), and 3.3-V in-system programmability (ISP) through the built-in IEEE Std. 1149.1 JTAG interface. The device also includes MultiVolt I/O supporting 2.5-V and 3.3-V interfaces, a 4-pin JTAG chain, open-drain output option on every pin, and programmable security bit for design protection.

The MAX 7000A architecture is built on second-generation Multiple Array MatriX (MAX) technology with EEPROM memory cells, providing non-volatile configuration that retains state through power cycling. Each macrocell contains a programmable AND/OR array, a product-term selector, and a flipflop with three clear/preset modes. The interconnect is a continuous, high-speed routing matrix (PIA) that delivers uniform delay across the device, enabling predictable timing closure for synchronous and asynchronous designs alike.

Typical applications include telecommunications infrastructure (DSLAM line cards, optical transport), industrial automation and motor control, medical instrumentation, military and avionics subsystems, and glue logic replacement around microprocessors, ASICs, and DSPs. Designers favor this part when deterministic 10 ns timing, low power, and instant-on non-volatile behavior are required together.

When designing with this device, allocate adequate 3.3-V decoupling on every VCCINT/VCCIO pair, leave a minimum 100 ns setup margin on JTAG TMS/TCK timing for ISP, and verify the Quartus/MAX+PLUS II fitter report against the 93.5 MHz fCNT ceiling to avoid path timing violations. The 144-pin TQFP exposes a thermal pad area that benefits from a 4-layer PCB with a ground pour to keep junction temperature within the -40C to +85C ambient window.

This page synthesizes distributor pricing, drop-in alternatives from the same MAX 7000A family, and practical design notes not found in the manufacturer datasheet.

Bộ thay thế dễ dàng lắp đặt cho EPM7256ATI144-10 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

Các biến thể trong loạt này

Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPM7256ATI144-10 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Programming Interface, Maximum Counter Frequency, Process Technology.

EPM7256AETC144-10

Intel

Package: 144-pin TQFP (TQFP-144)

Operating Temperature: 0C to +70C (commercial)

Programming Interface: JTAG (IEEE 1149.1) + Fast Passive Serial