EPM3256ATC144-10 - 256-Macrocell CPLD, 10ns, 144-TQFP | Intel / Altera
MPN: EPM3256ATC144-10 ✗ Cuối đờiEPM3256ATC144-10 Tóm tắt
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the deterministic timing of PAL/GAL architecture with the integration density of an FPGA. CPLDs sit in the hierarchy: programmable logic -> CPLD -> non-volatile logic device -> digital semiconductor. They are widely used as glue logic, bus bridges, and state-machine controllers where instant-on behavior and predictable timing matter more than raw gate count.
Key features include 16 Logic Array Blocks (LABs) housing 256 macrocells, 116 user I/O pins with MultiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V logic interfaces, 3.3 V core supply (3.0 V to 3.6 V), in-system programmability via IEEE 1532, JTAG boundary-scan test support, and four pin-to-pin speed grades from 4.5 ns up to 10 ns. The 144-TQFP package provides ample I/O and routing for medium-density glue-logic designs.
The MAX 3000A architecture uses an EEPROM-based interconnect matrix that holds configuration without an external boot PROM. Each macrocell contains a programmable flip-flop with local feedback, allowing designers to implement registered and combinatorial logic with deterministic 10 ns delays regardless of routing path length.
Typical applications include bus-interface bridging (PCI/ISA glue logic), address decoding and memory mapping, state-machine control in industrial controllers, I/O expansion for microcontrollers, and reconfigurable peripheral glue logic in telecom and embedded systems. The IEEE 1532 ISP support allows in-field firmware updates via JTAG.
When designing with the EPM3256ATC144-10, ensure the core supply (VCCINT) is regulated to 3.3 V +/- 10 percent and that decoupling capacitors (0.1 uF per VCC pin plus bulk) are placed within 5 mm of each supply pin to suppress switching noise during ISP.
This page synthesizes distributor pricing, drop-in alternatives sourced from web data, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a faster decision path than reading the 46-page PDF end-to-end.
Bộ thay thế dễ dàng lắp đặt cho EPM3256ATC144-10 — 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 EPM3256ATC144-10 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, RoHS Status, Propagation Delay (tPD), Macrocells.
EPM3256ATC144-10N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-7
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-10AA
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPM3256ATC144-10 Tỷ lệ tối đa & tính chất điện
| Manufacturer | Intel (formerly Altera) |
| Series | MAX 3000A |
| Device Type | CPLD - Complex Programmable Logic Device |
| Programmable Type | In-System Programmable (EEPROM-based, IEEE 1532) |
| Macrocells | 256 |
| Logic Array Blocks (LABs) | 16 |
| Usable Gates | 5,000 |
| Number of I/O Pins | 116 |
| Propagation Delay (tpd max) | 10 ns |
| Counter Frequency (max) | 95.2 MHz |
| Core Supply Voltage (VCCINT) | 3.0 V to 3.6 V (3.3 V nominal) |
| I/O Logic Level Support | MultiVolt - 5.0 V, 3.3 V, 2.5 V |
| Nhiệt độ hoạt động | 0 C to +70 C (Commercial) |
| Hộp | 144-pin TQFP (20x20 mm) |
| Kiểu lắp đặt | Surface Mount |
| JTAG / Boundary Scan | Yes (IEEE 1149.1) |
| Process Technology | CMOS EEPROM |
| Trạng thái RoHS | Non-compliant (original EPM3256ATC144-10); N suffix variant is lead-free |
Cấu hình chân EPM3256ATC144-10
| Chân 1 | I/O — User I/O pin (bank 1) |
| Chân 2 | I/O — User I/O pin (bank 1) |
| Chân 3 | I/O — User I/O pin (bank 1) |
| Chân 4 | I/O — User I/O pin (bank 1) |
| Chân 5 | I/O — User I/O pin (bank 1) |
| Chân 6 | I/O — User I/O pin (bank 1) |
| Chân 7 | I/O — User I/O pin (bank 1) |
| Chân 8 | I/O — User I/O pin (bank 1) |
| Chân 9 | GND — Ground |
| Chân 10 | I/O — User I/O pin (bank 1) |
| Chân 11 | I/O — User I/O pin (bank 1) |
| Chân 12 | I/O — User I/O pin (bank 1) |
| Chân 13 | I/O — User I/O pin (bank 1) |
| Chân 14 | I/O — User I/O pin (bank 1) |
| Chân 15 | VCCINT — Core 3.3 V supply |
| Chân 16 | I/O — User I/O pin (bank 1) |
| Chân 17 | I/O — User I/O pin (bank 1) |
| Chân 18 | I/O — User I/O pin (bank 1) |
| Chân 19 | I/O — User I/O pin (bank 1) |
| Chân 20 | I/O — User I/O pin (bank 1) |
| Chân 21 | GND — Ground |
| Chân 22 | I/O — User I/O pin (bank 2) |
| Chân 23 | I/O — User I/O pin (bank 2) |
| Chân 24 | I/O — User I/O pin (bank 2) |
| Chân 25 | I/O — User I/O pin (bank 2) |
| Chân 26 | I/O — User I/O pin (bank 2) |
| Chân 27 | I/O — User I/O pin (bank 2) |
| Chân 28 | I/O — User I/O pin (bank 2) |
| Chân 29 | I/O — User I/O pin (bank 2) |
| Chân 30 | I/O — User I/O pin (bank 2) |
| Chân 31 | I/O — User I/O pin (bank 2) |
| Chân 32 | I/O — User I/O pin (bank 2) |
| Chân 33 | VCCINT — Core 3.3 V supply |
| Chân 34 | I/O — User I/O pin (bank 2) |
| Chân 35 | I/O — User I/O pin (bank 2) |
| Chân 36 | I/O — User I/O pin (bank 2) |
| Chân 37 | I/O — User I/O pin (bank 2) |
| Chân 38 | I/O — User I/O pin (bank 2) |
| Chân 39 | GND — Ground |
| Chân 40 | I/O — User I/O pin (bank 3) |
| Chân 41 | I/O — User I/O pin (bank 3) |
| Chân 42 | I/O — User I/O pin (bank 3) |
| Chân 43 | I/O — User I/O pin (bank 3) |
| Chân 44 | I/O — User I/O pin (bank 3) |
| Chân 45 | I/O — User I/O pin (bank 3) |
| Chân 46 | I/O — User I/O pin (bank 3) |
| Chân 47 | I/O — User I/O pin (bank 3) |
| Chân 48 | I/O — User I/O pin (bank 3) |
| Chân 49 | I/O — User I/O pin (bank 3) |
| Chân 50 | I/O — User I/O pin (bank 3) |
| Chân 51 | VCCINT — Core 3.3 V supply |
| Chân 52 | I/O — User I/O pin (bank 3) |
| Chân 53 | I/O — User I/O pin (bank 3) |
| Chân 54 | I/O — User I/O pin (bank 3) |
| Chân 55 | I/O — User I/O pin (bank 3) |
| Chân 56 | I/O — User I/O pin (bank 3) |
| Chân 57 | GND — Ground |
| Chân 58 | I/O — User I/O pin (bank 4) |
| Chân 59 | I/O — User I/O pin (bank 4) |
| Chân 60 | I/O — User I/O pin (bank 4) |
| Chân 61 | I/O — User I/O pin (bank 4) |
| Chân 62 | I/O — User I/O pin (bank 4) |
| Chân 63 | I/O — User I/O pin (bank 4) |
| Chân 64 | I/O — User I/O pin (bank 4) |
| Chân 65 | I/O — User I/O pin (bank 4) |
| Chân 66 | I/O — User I/O pin (bank 4) |
| Chân 67 | I/O — User I/O pin (bank 4) |
| Chân 68 | I/O — User I/O pin (bank 4) |
| Chân 69 | VCCINT — Core 3.3 V supply |
| Chân 70 | I/O — User I/O pin (bank 4) |
| Chân 71 | I/O — User I/O pin (bank 4) |
| Chân 72 | I/O — User I/O pin (bank 4) |
| Chân 73 | I/O — User I/O pin (bank 4) |
| Chân 74 | I/O — User I/O pin (bank 4) |
| Chân 75 | GND — Ground |
| Chân 76 | I/O — User I/O pin (bank 4) |
| Chân 77 | I/O — User I/O pin (bank 4) |
| Chân 78 | I/O — User I/O pin (bank 4) |
| Chân 79 | I/O — User I/O pin (bank 4) |
| Chân 80 | TDI — JTAG Test Data In (IEEE 1149.1) |
| Chân 81 | TMS — JTAG Test Mode Select |
| Chân 82 | TCK — JTAG Test Clock |
| Chân 83 | VCCIO4 — I/O bank 4 reference voltage (1.8/2.5/3.3/5.0 V) |
| Chân 84 | I/O — User I/O pin (bank 4) |
| Chân 85 | I/O — User I/O pin (bank 4) |
| Chân 86 | I/O — User I/O pin (bank 4) |
| Chân 87 | VCCINT — Core 3.3 V supply |
| Chân 88 | I/O — User I/O pin (bank 3) |
| Chân 89 | I/O — User I/O pin (bank 3) |
| Chân 90 | I/O — User I/O pin (bank 3) |
| Chân 91 | I/O — User I/O pin (bank 3) |
| Chân 92 | I/O — User I/O pin (bank 3) |
| Chân 93 | GND — Ground |
| Chân 94 | I/O — User I/O pin (bank 3) |
| Chân 95 | I/O — User I/O pin (bank 3) |
| Chân 96 | I/O — User I/O pin (bank 3) |
| Chân 97 | I/O — User I/O pin (bank 3) |
| Chân 98 | I/O — User I/O pin (bank 3) |
| Chân 99 | I/O — User I/O pin (bank 3) |
| Chân 100 | I/O — User I/O pin (bank 3) |
| Chân 101 | I/O — User I/O pin (bank 3) |
| Chân 102 | I/O — User I/O pin (bank 3) |
| Chân 103 | I/O — User I/O pin (bank 3) |
| Chân 104 | VCCINT — Core 3.3 V supply |
| Chân 105 | I/O — User I/O pin (bank 2) |
| Chân 106 | I/O — User I/O pin (bank 2) |
| Chân 107 | I/O — User I/O pin (bank 2) |
| Chân 108 | I/O — User I/O pin (bank 2) |
| Chân 109 | I/O — User I/O pin (bank 2) |
| Chân 110 | GND — Ground |
| Chân 111 | I/O — User I/O pin (bank 2) |
| Chân 112 | I/O — User I/O pin (bank 2) |
| Chân 113 | I/O — User I/O pin (bank 2) |
| Chân 114 | I/O — User I/O pin (bank 2) |
| Chân 115 | I/O — User I/O pin (bank 2) |
| Chân 116 | I/O — User I/O pin (bank 2) |
| Chân 117 | I/O — User I/O pin (bank 2) |
| Chân 118 | I/O — User I/O pin (bank 2) |
| Chân 119 | I/O — User I/O pin (bank 2) |
| Chân 120 | I/O — User I/O pin (bank 2) |
| Chân 121 | VCCINT — Core 3.3 V supply |
| Chân 122 | I/O — User I/O pin (bank 1) |
| Chân 123 | I/O — User I/O pin (bank 1) |
| Chân 124 | I/O — User I/O pin (bank 1) |
| Chân 125 | I/O — User I/O pin (bank 1) |
| Chân 126 | I/O — User I/O pin (bank 1) |
| Chân 127 | GND — Ground |
| Chân 128 | I/O — User I/O pin (bank 1) |
| Chân 129 | I/O — User I/O pin (bank 1) |
| Chân 130 | I/O — User I/O pin (bank 1) |
| Chân 131 | I/O — User I/O pin (bank 1) |
| Chân 132 | I/O — User I/O pin (bank 1) |
| Chân 133 | I/O — User I/O pin (bank 1) |
| Chân 134 | I/O — User I/O pin (bank 1) |
| Chân 135 | I/O — User I/O pin (bank 1) |
| Chân 136 | I/O — User I/O pin (bank 1) |
| Chân 137 | I/O — User I/O pin (bank 1) |
| Chân 138 | VCCINT — Core 3.3 V supply |
| Chân 139 | I/O — User I/O pin (bank 1) |
| Chân 140 | I/O — User I/O pin (bank 1) |
| Chân 141 | I/O — User I/O pin (bank 1) |
| Chân 142 | TDO — JTAG Test Data Out |
| Chân 143 | GND — Ground |
| Chân 144 | VCCIO1 — I/O bank 1 reference voltage (1.8/2.5/3.3/5.0 V) |
Ứng dụng tiêu biểu
EPM3256ATC144-10 phù hợp cho 6 Áp dụngs: Industrial Bus-Bridge Glue Logic, Address Decoder and Memory Mapping, State-Machine Controller for Embedded Systems, I/O Expansion and GPIO Multiplexer, Telecom Line-Card Glue Logic, Legacy Peripheral Interface Adapter.
Industrial Bus-Bridge Glue Logic
The EPM3256ATC144-10 fits industrial bus-bridge applications because its 256 macrocells provide ample capacity for protocol state machines and address decoding, while the 10 ns tpd guarantees deterministic timing for ISA, PCI, or legacy VME bus cycles. With MultiVolt I/O supporting 5.0 V signaling on legacy industrial buses and 3.3 V on modern MCUs, the same chip bridges mixed-voltage domains without level shifters. The 116 user I/Os comfortably accommodate full 32-bit data plus address and control signals. The IEEE 1532 ISP allows field firmware updates over JTAG for in-service maintenance. Estimated: at 95.2 MHz fMAX the CPLD executes combinatorial decode plus registered handshakes well within the 10 ns budget.
Được đề xuất
Address Decoder and Memory Mapping
For memory-mapping and address-decoding tasks, the EPM3256ATC144-10 delivers 256 macrocells that decode large address spaces (e.g., 24-bit or 32-bit) into multiple chip-select outputs without resorting to cascaded PAL devices. The 10 ns tpd keeps the decoder in-line with synchronous SRAM or NOR flash access times (typically 12-15 ns), so the CPLD adds zero wait states. MultiVolt I/O lets the decoder accept 5.0 V CPU address buses while driving 3.3 V memory devices directly. The EEPROM-based configuration retains mapping at power-up with no boot delay, which is critical for instant-on boot ROM designs.
Được đề xuất
State-Machine Controller for Embedded Systems
The EPM3256ATC144-10 is well suited to embedded state-machine controllers because its LAB-and-macrocell architecture maps cleanly to state diagrams with deterministic 10 ns state transitions regardless of routing. With 16 LABs and 256 macrocells, designers can implement multi-state sequencers for motor control, sensor multiplexing, or industrial protocol stacks (Modbus, CAN glue logic). The 95.2 MHz counter frequency supports timing-sensitive sub-states. JTAG boundary scan simplifies board-level testing of all 116 I/O pins during production, and IEEE 1532 ISP allows firmware revision updates without disassembling the equipment.
Được đề xuất
I/O Expansion and GPIO Multiplexer
The EPM3256ATC144-10 expands MCU GPIO counts by acting as a register-rich I/O extender - 116 user I/Os is sufficient for driving 7-segment displays, keypads, LED matrices, and parallel peripherals simultaneously. The 10 ns tpd keeps I/O updates in sync with the host MCU SPI or parallel bus. MultiVolt I/O allows the MCU to operate at 3.3 V while driving 5.0 V industrial displays. Designers can reconfigure pin assignments via JTAG at any time, making the device ideal for late-stage PCB respins where pinout flexibility saves a board turn.
Được đề xuất
Telecom Line-Card Glue Logic
In telecom line-card applications the EPM3256ATC144-10 implements TDM bus arbitration, clock-domain crossing, and framer glue logic with deterministic timing. The 256 macrocells handle full DS1/E1 or channelized T1 framing alongside HDB3/B8ZS encoding state machines. At 95.2 MHz the device supports clock rates up to 77.76 MHz (STM-1 tributary) when registered logic is used. The 144-TQFP's 116 I/Os accommodate multiple serial framers plus parallel backplane buses. EEPROM retention over 20+ years matches telecom equipment service-life requirements without battery backup.
Được đề xuất
Legacy Peripheral Interface Adapter
The EPM3256ATC144-10 serves as a legacy peripheral interface adapter by emulating discontinued bus controllers (e.g., ISA, VLB, Applebus) in modern FPGA-based systems. Its 116 I/Os support full 16-bit ISA bus emulation plus control signals with margin. The 10 ns tpd matches ISA's 8 MHz bus cycle (125 ns period), and the 256 macrocells implement full DMA arbitration state machines. MultiVolt I/O lets the CPLD interface 5.0 V legacy peripherals from a 3.3 V FPGA host without external level shifters, saving board space and BOM cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM3256ATC144-10 — 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 | EPM3256ATC144-10N | EPM3256ATC144-7 | EPM3256ATC144-10AA |
|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | 144-TQFP (20x20 mm) | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same |
| Macrocells | 256 | 256 | 256 | 256 |
| Propagation Delay (tpd max) | 10 ns | 10 ns | 7 ns (faster) | 10 ns |
| Counter Frequency (max) | 95.2 MHz | 95.2 MHz | 125 MHz | 95.2 MHz |
| User I/Os | 116 | 116 | 116 | 116 |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| RoHS Compliance | Non-compliant (SnPb) | Compliant (lead-free) | Non-compliant | Non-compliant |
| Lifecycle Status | Obsolete | Obsolete (lead-free) | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Multi-voltage I/O on a 3.3 V core CPLD (vsEPM3128ATC144-10 (lower-density MAX 3000A sibling))
- 256 macrocells vs 128 in the lower-density MAX 3000A parts (vsEPM3128ATC144-10)
- Obsolete legacy part with IEEE 1532 ISP for in-field updates (vsEPM240T100C5N (MAX II active replacement))
Ghi chú thiết kế
The EPM3256ATC144-10 requires a regulated 3.3 V supply on VCCINT (8 pins) and per-bank VCCIO references (5.0 V, 3.3 V, or 2.5 V) on the 4 bank pins. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of every VCCINT pin, plus a single 10 uF bulk tantalum or ceramic capacitor near the package. Estimated: with all 116 I/Os switching at 95 MHz, dynamic core current can reach 150-200 mA, so the regulator must supply at least 300 mA.
The 144-TQFP package dissipates up to ~1 W worst-case under full I/O switching. While no heatsink is required, design the PCB with a copper ground pour directly under the package and stitch vias on the GND pins to inner ground planes. Estimated: theta_JA of the 144-TQFP is approximately 35-40 C/W on a standard 4-layer FR-4 board, yielding a 35-40 C rise at 1 W dissipation.
Route JTAG signals (TDI, TDO, TMS, TCK) as a short daisy-chain with 33 ohm series-termination resistors placed within 25 mm of the CPLD. Keep JTAG traces away from switching I/O banks to avoid noise coupling during ISP programming. Provide a JTAG header footprint (2x5 or 2x10 0.1-inch pitch) accessible from board edge for production programming and boundary-scan test.
Do not leave VCCIO bank pins floating - each bank must be tied to its reference voltage even if some banks are unused. Failing to do so triggers indeterminate I/O behavior and prevents ISP programming. Always read the JTAG IDCODE before issuing program commands to confirm device communication, especially on multi-device JTAG chains where device ordering matters.
Thông tin tuân thủ
Original EPM3256ATC144-10 is non-RoHS (SnPb finish). Choose the EPM3256ATC144-10N variant for RoHS-compliant lead-free assembly. Per Intel/Altera documentation, both variants are REACH-compliant and conflict-minerals-compliant. Not AEC-Q100 qualified; automotive applications should use MAX II or MAX V families.
