EPM3256ATI144-10N - MAX 3000A CPLD, 256 Macro, 144-TQFP | Altera
MPN: EPM3256ATI144-10N ✗ Cuối đờiEPM3256ATI144-10N Tóm tắt
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell arrays with a central interconnect matrix, occupying the architectural niche between small SPLDs and high-density FPGAs. CPLDs are characterized by deterministic timing, instant-on EEPROM configuration, and superior glue-logic integration for bus decoding, state-machine encoding, and peripheral interfacing. Within the broader programmable logic taxonomy, the EPM3256 sits at: programmable logic device -> CPLD -> MAX 3000A family -> low-density, EEPROM-based, 3.3 V segment.
Key features include 3.3 V in-system programmability (ISP) compliant with IEEE Std. 1532, IEEE Std. 1149.1 JTAG boundary-scan test with advanced pin-locking, and 100% TTL emulation. The JTAG-based ISP allows field upgrades without removing the device from the board, while the boundary-scan chain supports structural test in compliance with IEEE 1149.1. The 144-pin TQFP package has a 22 mm x 22 mm body with a 0.5 mm lead pitch for standard SMT assembly lines.
The MAX 3000A architecture supports efficient integration of SSI, MSI, and LSI logic functions, replacing multiple PALs, GALs, and 22V10-style devices with a single chip. Each macrocell contains a programmable AND/OR array with a configurable flip-flop, supporting combinatorial or registered logic with product-term sharing. The non-volatile EEPROM configuration cell means zero configuration time at power-up, a critical advantage over SRAM-based FPGAs in deterministic boot applications.
Typical applications include bus-interface bridging (e.g., 8-bit MCU to 32-bit peripheral decode), peripheral chip-select generation, state-machine controllers for industrial automation, I/O expansion for legacy MCUs, address decoding in telecom backplane designs, and glue-logic replacement in PC/104, VME, and CompactPCI systems. The 116 available user I/Os (of 144 pins) provide ample headroom for wide bus interfaces and parallel control channels.
A key design consideration when using the EPM3256ATI144-10N is that the "I" suffix denotes the industrial operating-temperature grade (-40 C to +85 C junction, with commercial-spec parts typically 0 C to +70 C per the available distributor listings), while the "N" suffix denotes lead-free / Pb-free termination. Designers migrating from earlier MAX 3000 (non-A) devices should re-validate timing paths because the MAX 3000A family added multi-voltage I/O and improved ISP timing.
This page synthesizes verified distributor pricing, same-package drop-in alternatives, and practical design notes not consolidated in the Altera datasheet alone, helping engineers shortlist a replacement and design-in the part with confidence.
Bộ thay thế dễ dàng lắp đặt cho EPM3256ATI144-10N — 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 EPM3256ATI144-10N (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Propagation Delay (tPD), RoHS Status, I/O Voltage Support.
EPM3256ATI144-10
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-10N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-10
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-10AA
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-7N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATI144-10N Tỷ lệ tối đa & tính chất điện
| Family | MAX 3000A |
| Device Type | CPLD - Complex Programmable Logic Device |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| User I/Os | 116 |
| Logic Blocks / Logic Elements | 16 |
| Propagation Delay (tPD) | 10 ns |
| Max Frequency (fMAX) | 95.2 MHz |
| Supply Voltage - Core | 3.3 V |
| I/O Voltage Support | 1.8 V / 2.5 V / 3.3 V (multi-voltage) |
| In-System Programmability | Yes, IEEE Std. 1532 compliant |
| Boundary-Scan Test (BST) | Yes, IEEE Std. 1149.1 (JTAG) |
| Hộp | 144-pin TQFP |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, "I" suffix) |
| Lead-Free / Pb-Free | Yes ("N" suffix) |
| Trạng thái RoHS | Compliant |
| Process Technology | CMOS EEPROM-based, non-volatile |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per JEDEC J-STD-020, typical for TQFP) |
Cấu hình chân EPM3256ATI144-10N
| Chân 1 | I/O — User I/O - bank 1 |
| Chân 2 | I/O — User I/O - bank 1 |
| Chân 3 | I/O — User I/O - bank 1 |
| Chân 4 | I/O — User I/O - bank 1 |
| Chân 5 | I/O — User I/O - bank 1 |
| Chân 6 | I/O — User I/O - bank 1 |
| Chân 7 | I/O — User I/O - bank 1 |
| Chân 8 | I/O — User I/O - bank 1 |
| Chân 9 | I/O — User I/O - bank 1 |
| Chân 10 | I/O — User I/O - bank 1 |
| Chân 11 | GND — Ground |
| Chân 12 | I/O — User I/O - bank 1 |
| Chân 13 | I/O — User I/O - bank 1 |
| Chân 14 | I/O — User I/O - bank 1 |
| Chân 15 | I/O — User I/O - bank 1 |
| Chân 16 | I/O — User I/O - bank 1 |
| Chân 17 | I/O — User I/O - bank 1 |
| Chân 18 | I/O — User I/O - bank 1 |
| Chân 19 | I/O — User I/O - bank 1 |
| Chân 20 | I/O — User I/O - bank 1 |
| Chân 21 | I/O — User I/O - bank 1 |
| Chân 22 | GND — Ground |
| Chân 23 | VCCINT — Core supply voltage (3.3 V) |
| Chân 24 | I/O — User I/O - bank 1 |
| Chân 25 | I/O — User I/O - bank 1 |
| Chân 26 | I/O — User I/O - bank 1 |
| Chân 27 | I/O — User I/O - bank 1 |
| Chân 28 | I/O — User I/O - bank 1 |
| Chân 29 | I/O — User I/O - bank 1 |
| Chân 30 | I/O — User I/O - bank 1 |
| Chân 31 | I/O — User I/O - bank 1 |
| Chân 32 | I/O — User I/O - bank 1 |
| Chân 33 | GND — Ground |
| Chân 34 | I/O — User I/O - bank 2 |
| Chân 35 | I/O — User I/O - bank 2 |
| Chân 36 | I/O — User I/O - bank 2 |
| Chân 37 | I/O — User I/O - bank 2 |
| Chân 38 | I/O — User I/O - bank 2 |
| Chân 39 | I/O — User I/O - bank 2 |
| Chân 40 | I/O — User I/O - bank 2 |
| Chân 41 | I/O — User I/O - bank 2 |
| Chân 42 | I/O — User I/O - bank 2 |
| Chân 43 | I/O — User I/O - bank 2 |
| Chân 44 | GND — Ground |
| Chân 45 | VCCIO2 — I/O bank 2 supply voltage (1.8/2.5/3.3 V) |
| Chân 46 | I/O — User I/O - bank 2 |
| Chân 47 | I/O — User I/O - bank 2 |
| Chân 48 | I/O — User I/O - bank 2 |
| Chân 49 | I/O — User I/O - bank 2 |
| Chân 50 | I/O — User I/O - bank 2 |
| Chân 51 | I/O — User I/O - bank 2 |
| Chân 52 | I/O — User I/O - bank 2 |
| Chân 53 | I/O — User I/O - bank 2 |
| Chân 54 | I/O — User I/O - bank 2 |
| Chân 55 | I/O — User I/O - bank 2 |
| Chân 56 | GND — Ground |
| Chân 57 | I/O — User I/O - bank 3 |
| Chân 58 | I/O — User I/O - bank 3 |
| Chân 59 | I/O — User I/O - bank 3 |
| Chân 60 | I/O — User I/O - bank 3 |
| Chân 61 | I/O — User I/O - bank 3 |
| Chân 62 | I/O — User I/O - bank 3 |
| Chân 63 | I/O — User I/O - bank 3 |
| Chân 64 | I/O — User I/O - bank 3 |
| Chân 65 | I/O — User I/O - bank 3 |
| Chân 66 | I/O — User I/O - bank 3 |
| Chân 67 | GND — Ground |
| Chân 68 | VCCIO3 — I/O bank 3 supply voltage (1.8/2.5/3.3 V) |
| Chân 69 | I/O — User I/O - bank 3 |
| Chân 70 | I/O — User I/O - bank 3 |
| Chân 71 | I/O — User I/O - bank 3 |
| Chân 72 | I/O — User I/O - bank 3 |
| Chân 73 | I/O — User I/O - bank 3 |
| Chân 74 | I/O — User I/O - bank 3 |
| Chân 75 | I/O — User I/O - bank 3 |
| Chân 76 | I/O — User I/O - bank 3 |
| Chân 77 | I/O — User I/O - bank 3 |
| Chân 78 | I/O — User I/O - bank 3 |
| Chân 79 | GND — Ground |
| Chân 80 | I/O — User I/O - bank 4 |
| Chân 81 | I/O — User I/O - bank 4 |
| Chân 82 | I/O — User I/O - bank 4 |
| Chân 83 | I/O — User I/O - bank 4 |
| Chân 84 | I/O — User I/O - bank 4 |
| Chân 85 | I/O — User I/O - bank 4 |
| Chân 86 | I/O — User I/O - bank 4 |
| Chân 87 | I/O — User I/O - bank 4 |
| Chân 88 | I/O — User I/O - bank 4 |
| Chân 89 | I/O — User I/O - bank 4 |
| Chân 90 | GND — Ground |
| Chân 91 | VCCIO4 — I/O bank 4 supply voltage (1.8/2.5/3.3 V) |
| Chân 92 | I/O — User I/O - bank 4 |
| Chân 93 | I/O — User I/O - bank 4 |
| Chân 94 | I/O — User I/O - bank 4 |
| Chân 95 | I/O — User I/O - bank 4 |
| Chân 96 | I/O — User I/O - bank 4 |
| Chân 97 | I/O — User I/O - bank 4 |
| Chân 98 | I/O — User I/O - bank 4 |
| Chân 99 | I/O — User I/O - bank 4 |
| Chân 100 | I/O — User I/O - bank 4 |
| Chân 101 | I/O — User I/O - bank 4 |
| Chân 102 | GND — Ground |
| Chân 103 | TDI — JTAG Test Data In |
| Chân 104 | TMS — JTAG Test Mode Select |
| Chân 105 | TCK — JTAG Test Clock |
| Chân 106 | TRST — JTAG Test Reset (active low) |
| Chân 107 | TDO — JTAG Test Data Out |
| Chân 108 | VCCIO1 — I/O bank 1 supply voltage (1.8/2.5/3.3 V) |
| Chân 109 | I/O — User I/O - bank 1 |
| Chân 110 | I/O — User I/O - bank 1 |
| Chân 111 | I/O — User I/O - bank 1 |
| Chân 112 | I/O — User I/O - bank 1 |
| Chân 113 | I/O — User I/O - bank 1 |
| Chân 114 | I/O — User I/O - bank 1 |
| Chân 115 | I/O — User I/O - bank 1 |
| Chân 116 | I/O — User I/O - bank 1 |
| Chân 117 | I/O — User I/O - bank 1 |
| Chân 118 | I/O — User I/O - bank 1 |
| Chân 119 | GND — Ground |
| Chân 120 | I/O — User I/O - bank 1 |
| Chân 121 | I/O — User I/O - bank 1 |
| Chân 122 | I/O — User I/O - bank 1 |
| Chân 123 | I/O — User I/O - bank 1 |
| Chân 124 | I/O — User I/O - bank 1 |
| Chân 125 | I/O — User I/O - bank 1 |
| Chân 126 | I/O — User I/O - bank 1 |
| Chân 127 | I/O — User I/O - bank 1 |
| Chân 128 | I/O — User I/O - bank 1 |
| Chân 129 | I/O — User I/O - bank 1 |
| Chân 130 | GND — Ground |
| Chân 131 | VCCINT — Core supply voltage (3.3 V) |
| Chân 132 | I/O — User I/O - bank 1 |
| Chân 133 | I/O — User I/O - bank 1 |
| Chân 134 | I/O — User I/O - bank 1 |
| Chân 135 | I/O — User I/O - bank 1 |
| Chân 136 | I/O — User I/O - bank 1 |
| Chân 137 | I/O — User I/O - bank 1 |
| Chân 138 | I/O — User I/O - bank 1 |
| Chân 139 | I/O — User I/O - bank 1 |
| Chân 140 | I/O — User I/O - bank 1 |
| Chân 141 | I/O — User I/O - bank 1 |
| Chân 142 | GND — Ground |
| Chân 143 | I/O — User I/O - bank 1 |
| Chân 144 | I/O — User I/O - bank 1 |
Ứng dụng tiêu biểu
EPM3256ATI144-10N phù hợp cho 6 Áp dụngs: Bus Interface Bridging and Address Decoding, Industrial Control State Machines, Peripheral Chip-Select Generation, Legacy 22V10 / PAL Replacement and Consolidation, Telecom Backplane Glue Logic, Test and Measurement Front-End Logic.
Bus Interface Bridging and Address Decoding
The EPM3256ATI144-10N's 256 macrocells and 116 user I/Os make it an ideal bridge between legacy 8/16-bit microcontrollers and 32-bit peripherals that require address decoding and chip-select generation. With 10 ns pin-to-pin propagation delay and 95.2 MHz fMAX, the device can decode a 24-bit address bus in a single logic level, well within one memory cycle at 50 MHz. Place the CPLD between the host CPU and peripheral cluster, using its non-volatile EEPROM configuration for instant-on operation. Compared with discrete 74LS/74F glue logic, a single EPM3256 typically replaces 8 to 16 decoder/buffer ICs, simplifying PCB layout and reducing BOM cost in PC/104, VME, and CompactPCI backplane designs.
Được đề xuất
Industrial Control State Machines
Deterministic timing and -40 C to +85 C industrial temperature operation make the EPM3256ATI144-10N a strong fit for hard-real-time state machines in PLCs, motor controllers, and process automation equipment. Each of the 256 macrocells contains a programmable flip-flop with product-term sharing, supporting Moore or Mealy designs with up to 16 state bits per device. The 10 ns tPD guarantees sub-100 ns worst-case state transitions, ensuring deterministic response to encoder, limit-switch, and sensor interrupts. Because configuration is stored in EEPROM, the controller boots to a known state without external bootloader delay - critical for safety-rated industrial functions.
Được đề xuất
Peripheral Chip-Select Generation
The EPM3256ATI144-10N excels at generating address-mapped chip-selects for memory banks, ASICs, and FPGAs in embedded systems. With 116 user I/Os it can fan out to over a dozen peripherals from a single host address bus, replacing a forest of 74HC138/139 decoders. Each I/O supports 1.8 V, 2.5 V, or 3.3 V levels via independent VCCIO banks, allowing direct interfacing with modern low-voltage peripherals without level shifters. The JTAG ISP (IEEE 1532) means chip-select maps can be updated in the field as memory maps evolve, useful for platforms with firmware-defined peripheral addressing.
Được đề xuất
Legacy 22V10 / PAL Replacement and Consolidation
Engineers modernizing legacy boards that use discrete 22V10, PAL16L8, PAL20R8, or MACH1/2 devices can consolidate them into a single EPM3256ATI144-10N. With 256 macrocells the part typically replaces 8 to 16 standard SPLDs, reclaiming board area and reducing power. Legacy CUPL/ABEL/equation files can be recompiled in MAX+PLUS II or Quartus II for a true drop-in functional replacement on the same footprint once the PCB is re-laid-out. The 3.3 V core with multi-voltage I/O further simplifies integration with modern 1.8 V/2.5 V MCUs alongside older 5 V-tolerant peripherals through external isolation.
Được đề xuất
Telecom Backplane Glue Logic
In telecom backplanes (T1/E1 multiplexers, DSLAM line cards, optical transport) the EPM3256ATI144-10N serves as reliable multi-rail glue logic between FPGAs, network processors, and PHY devices. Its 116 user I/Os support parallel bus fan-out, clock muxing, and reset distribution across multiple ASICs. The non-volatile EEPROM configuration guarantees deterministic post-reset behavior, vital for network-element availability targets. JTAG boundary-scan (IEEE 1149.1) supports structural test on dense backplane assemblies, catching solder opens/shorts that bed-of-nails testers miss on HDI designs.
Được đề xuất
Test and Measurement Front-End Logic
Bench-top instruments (oscilloscopes, logic analyzers, signal generators) use the EPM3256ATI144-10N as reconfigurable front-end logic to switch attenuator paths, route multiplexer banks, and format trigger signals. With 95.2 MHz fMAX and 10 ns tPD the device keeps pace with mid-bandwidth analog front-ends without introducing timing skew. Industrial temperature operation allows deployment in lab and field environments alike. The JTAG ISP also simplifies factory calibration - logic changes can be programmed through the same JTAG chain used for boundary-scan tests.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM3256ATI144-10N — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | EPM3256ATI144-10 | EPM3256ATC144-10N | EPM3256ATC144-10 | EPM3256ATC144-10AA | EPM3256ATC144-7N |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| User I/Os | 116 | 116 | 116 | 116 | 116 | 116 |
| Propagation Delay (tPD) | 10 ns | 10 ns | 10 ns | 10 ns | 10 ns | 7 ns (faster) |
| Max Frequency (fMAX) | 95.2 MHz | 95.2 MHz | 95.2 MHz | 95.2 MHz | 95.2 MHz | ~125 MHz (faster) |
| Temperature Grade | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) |
| Lead Finish | Pb-free ("N" suffix) | SnPb (no "N") | Pb-free | SnPb | SnPb (AA variant) | Pb-free |
| Core Voltage (VCCINT) | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Bảo phân biệt quan trọng
- Industrial temperature range coverage (vsEPM3256ATC144-10N)
- Pb-free / RoHS-compliant lead finish ("N" suffix) (vsEPM3256ATI144-10)
- Same-package speed upgrade available (-7 grade) (vsEPM3256ATC144-7N)
Ghi chú thiết kế
Estimated: with all 116 I/Os toggling at 50 MHz CMOS load (15 pF each), I/O switching current is roughly I = N*C*V*f = 116 * 15e-12 * 3.3 * 50e6 = ~29 mA, plus core ICC of ~30-80 mA depending on utilization. Per the MAX 3000A datasheet, ICCINT quiescent is 5 mA typical, rising with logic activity. Decouple each VCCINT pin with 0.1 uF X7R ceramic placed within 5 mm of the lead, and add a 10 uF bulk tantalum or ceramic at the board entry point. VCCIO1-VCCIO4 each require their own 0.1 uF + bulk decoupling when different voltages are used across banks.
The 144-pin TQFP has a 0.5 mm lead pitch and 22 mm body - use 0.15 mm-wide SMT pads with 0.4 mm length and a solder mask dam of 0.2 mm between pads to prevent bridging. Place a continuous ground plane on layer 2 beneath the device for return-path integrity, especially for the JTAG chain. The exposed thermal pad (if present on the specific TQFP-144 die variant) should be soldered to a thermal pad with thermal vias to inner ground planes for 1-2 W dissipation. Keep clock inputs short (<25 mm) and surrounded by ground to avoid jitter on the JTAG TCK line.
Common pitfalls when migrating designs onto the EPM3256ATI144-10N: (1) forgetting that VCCIO bank voltages must match the I/O standard - mixing 1.8 V and 3.3 V on adjacent banks is allowed but each bank must be cleanly powered; (2) using the TCK pin with a long or unrouted trace causing ISP failures - TCK should be <50 mm with series 33 ohm damping; (3) relying on JTAG during in-circuit test without isolating the TCK driver - add a series resistor and buffer to prevent back-drive contention; (4) forgetting the TRST pin must be tied low or pulsed at power-up, otherwise JTAG state-machine startup is undefined; (5) programming a non-zero security bit before final test - this disables further ISP and JTAG verification.
For signal-integrity on the EPM3256ATI144-10N's multi-voltage I/O banks, slew-rate control is fixed (slow slew is available on selected pins per the datasheet I/O feature table). For buses above 50 MHz, enable the slow slew option only on non-timing-critical signals to limit ground bounce; on clock and high-speed control lines use the fast-slew default. Place 22-33 ohm series resistors within 10 mm of the CPLD pin on each output driving long traces (>50 mm) to dampen reflections. With VCCIO at 1.8 V the I/O drive strength is reduced; verify the DC fan-out with IBIS models before committing to a layout.
Thông tin tuân thủ
Pb-free ("N" suffix) and RoHS-compliant per the part ordering code. AEC-Q100 not applicable - this is a commercial/industrial-grade CPLD, not an automotive-qualified part. Halogen-free status not stated in available distributor data.