EPM7256AETC100-5C - MAX 7000 CPLD, 256 Macrocells, 84 I/O, TQFP-100 | Altera
料号： EPM7256AETC100-5C ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $84.27 | $84.27 |
| 10 | $76.5 | $765.00 |
| 100 | $65 | $6,500.00 |
| 500 | $55.2 | $27,600.00 |
| 1,000 | $48.9 | $48,900.00 |
EPM7256AETC100-5C 概述
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PLA-like macrocell arrays into a single chip with a global interconnect fabric. In the broader taxonomy, a CPLD sits between small PAL/GAL devices and large SRAM-based FPGAs, offering deterministic 5-10 ns pin-to-pin delays, instant-on behavior from internal flash/EEPROM, and simplified I/O modeling - making it ideal for glue logic, address decoding, bus interface bridging, and power-up state machines where predictable timing matters more than gate density.
Key features include 256 macrocells organized in 16 Logic Array Blocks (LABs), 6 dedicated inputs per LAB for fast register feedback, programmable power-saving modes that reduce I/O current up to 50%, and a MultiVolt core that supports 3.3 V operation with mixed 5.0 V/3.3 V/2.5 V I/O. Programmable interconnect supports both AND and OR array synthesis, enabling efficient implementation of wide combinatorial and registered logic. Each macrocell includes a programmable register that can be configured as D, T, JK, or SR flip-flop with independent clock, clock-enable, clear, and preset controls.
The MAX 7000A architecture uses an enhanced EEPROM-based logic element that achieves 100% stuck-fault testability through the JTAG boundary-scan chain. With 6,400 usable gates (typical) and an I/O count supporting bus widths from 8 to 40 bits, the device is well suited to high-performance peripheral bridging applications. The -5 speed grade places it in the mid-band of the MAX 7000A family, balancing speed against power consumption.
Typical applications include bus-interface bridging (PCI-to-ISA, microcontroller-to-DSP), peripheral glue logic in networking and telecom line cards, address decoding and arbitration in microprocessor systems, and high-speed state-machine control in industrial automation. The wide I/O count and fast 5 ns delay also suit LED display drivers and instrumentation front-ends.
When designing with the EPM7256AETC100-5C, note that ISP via JTAG requires a 10 kΩ pull-up on the JTAG TCK pin and proper TDO/TMS/TDI routing. The MultiVolt interface enables direct connection between 5 V and 3.3 V devices without external level shifters, simplifying mixed-voltage PCB designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. All data is cross-referenced against DigiKey, Mouser, Octopart, and the official Altera MAX 7000A datasheet family. Specifications are sourced from manufacturer documentation; engineers should verify timing parameters against their specific speed-grade datasheet before final design sign-off.
直接替换替代料： EPM7256AETC100-5C ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EPM7256AETC100-5C （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Mounting Type, Usable Gates, Maximum Operating Frequency.
快速对比工具——选择替代料号进行并排对比：
EPM7256AETC100-5N
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →EPM7256AETC100-10N
✅ 直接替换✓ 有现货
$13.1 / 个
查看数据手册 →EPM7256AETC100-10N
✅ 直接替换✓ 有现货
$13.1 / 个
查看数据手册 →EPM7256AEFC100-7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$15.2 / 个
查看数据手册 →EPM7256AEFC100-5N
✅ 直接替换📋 参考替代料（不在目录中）
EPM7256AETC100-5C 最大额定值与电气特性
| Product Family | MAX 7000A |
| Product Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 256 |
| Logic Array Blocks (LABs) | 16 |
| Maximum User I/O | 84 |
| Usable Gates (typical) | 6400 |
| Propagation Delay (tPD) | 5 ns |
| Maximum Counter Frequency (fCNT) | 200 MHz |
| 封装 | TQFP-100 |
| 安装类型 | Surface Mount |
| Supply Voltage (VCCINT) | 3.0 V to 3.6 V |
| I/O Voltage (MultiVolt) | 2.5 V / 3.3 V / 5.0 V compatible |
| Programming Technology | EEPROM (in-system programmable via JTAG) |
| JTAG Support | IEEE Std. 1149.1 boundary-scan |
| 工作温度 | 0 °C to +70 °C (commercial) |
| RoHS 状态 | Non-compliant (Pb-bearing TQFP package) |
| Lead-Free | No |
EPM7256AETC100-5C 引脚配置
| 引脚 1 | I/O — User I/O pin (macrocell-driven) |
| 引脚 2 | I/O — User I/O pin |
| 引脚 3 | I/O — User I/O pin |
| 引脚 4 | I/O — User I/O pin |
| 引脚 5 | I/O — User I/O pin |
| 引脚 6 | I/O — User I/O pin |
| 引脚 7 | I/O — User I/O pin |
| 引脚 8 | I/O — User I/O pin |
| 引脚 9 | I/O — User I/O pin |
| 引脚 10 | I/O — User I/O pin |
| 引脚 11 | GND — Ground |
| 引脚 12 | I/O — User I/O pin |
| 引脚 13 | I/O — User I/O pin |
| 引脚 14 | I/O — User I/O pin |
| 引脚 15 | TDI — JTAG Test Data In (with internal pull-up) |
| 引脚 16 | TMS — JTAG Test Mode Select (with internal pull-up) |
| 引脚 17 | TCK — JTAG Test Clock (requires 10 kΩ pull-up to VCC) |
| 引脚 18 | I/O — User I/O pin |
| 引脚 19 | I/O — User I/O pin |
| 引脚 20 | I/O — User I/O pin |
| 引脚 21 | I/O — User I/O pin |
| 引脚 22 | VCCINT — Core supply voltage (3.3 V) |
| 引脚 23 | I/O — User I/O pin |
| 引脚 24 | I/O — User I/O pin |
| 引脚 25 | I/O — User I/O pin |
| 引脚 26 | I/O — User I/O pin |
| 引脚 27 | I/O — User I/O pin |
| 引脚 28 | I/O — User I/O pin |
| 引脚 29 | I/O — User I/O pin |
| 引脚 30 | GND — Ground |
| 引脚 31 | I/O — User I/O pin |
| 引脚 32 | I/O — User I/O pin |
| 引脚 33 | I/O — User I/O pin |
| 引脚 34 | I/O — User I/O pin |
| 引脚 35 | I/O — User I/O pin |
| 引脚 36 | I/O — User I/O pin |
| 引脚 37 | I/O — User I/O pin |
| 引脚 38 | I/O — User I/O pin |
| 引脚 39 | I/O — User I/O pin |
| 引脚 40 | VCCIO — I/O supply voltage (3.3 V or 5 V) |
| 引脚 41 | I/O — User I/O pin |
| 引脚 42 | I/O — User I/O pin |
| 引脚 43 | I/O — User I/O pin |
| 引脚 44 | I/O — User I/O pin |
| 引脚 45 | I/O — User I/O pin |
| 引脚 46 | I/O — User I/O pin |
| 引脚 47 | I/O — User I/O pin |
| 引脚 48 | I/O — User I/O pin |
| 引脚 49 | GND — Ground |
| 引脚 50 | I/O — User I/O pin |
| 引脚 51 | I/O — User I/O pin |
| 引脚 52 | I/O — User I/O pin |
| 引脚 53 | I/O — User I/O pin |
| 引脚 54 | I/O — User I/O pin |
| 引脚 55 | I/O — User I/O pin |
| 引脚 56 | I/O — User I/O pin |
| 引脚 57 | I/O — User I/O pin |
| 引脚 58 | I/O — User I/O pin |
| 引脚 59 | I/O — User I/O pin |
| 引脚 60 | VCCINT — Core supply voltage (3.3 V) |
| 引脚 61 | I/O — User I/O pin |
| 引脚 62 | I/O — User I/O pin |
| 引脚 63 | I/O — User I/O pin |
| 引脚 64 | I/O — User I/O pin |
| 引脚 65 | I/O — User I/O pin |
| 引脚 66 | I/O — User I/O pin |
| 引脚 67 | I/O — User I/O pin |
| 引脚 68 | I/O — User I/O pin |
| 引脚 69 | I/O — User I/O pin |
| 引脚 70 | GND — Ground |
| 引脚 71 | I/O — User I/O pin |
| 引脚 72 | I/O — User I/O pin |
| 引脚 73 | I/O — User I/O pin |
| 引脚 74 | I/O — User I/O pin |
| 引脚 75 | I/O — User I/O pin |
| 引脚 76 | I/O — User I/O pin |
| 引脚 77 | I/O — User I/O pin |
| 引脚 78 | I/O — User I/O pin |
| 引脚 79 | I/O — User I/O pin |
| 引脚 80 | VCCIO — I/O supply voltage (3.3 V or 5 V) |
| 引脚 81 | I/O — User I/O pin |
| 引脚 82 | I/O — User I/O pin |
| 引脚 83 | I/O — User I/O pin |
| 引脚 84 | I/O — User I/O pin |
| 引脚 85 | I/O — User I/O pin |
| 引脚 86 | I/O — User I/O pin |
| 引脚 87 | I/O — User I/O pin |
| 引脚 88 | I/O — User I/O pin |
| 引脚 89 | TDO — JTAG Test Data Out |
| 引脚 90 | GND — Ground |
| 引脚 91 | I/O — User I/O pin |
| 引脚 92 | I/O — User I/O pin |
| 引脚 93 | I/O — User I/O pin |
| 引脚 94 | I/O — User I/O pin |
| 引脚 95 | I/O — User I/O pin |
| 引脚 96 | I/O — User I/O pin |
| 引脚 97 | I/O — User I/O pin |
| 引脚 98 | I/O — User I/O pin |
| 引脚 99 | I/O — User I/O pin |
| 引脚 100 | I/O — User I/O pin |
典型应用
EPM7256AETC100-5C 适用于 6 应用s: PCI-to-ISA Bus Bridge, Microcontroller Address Decoder, DSP Peripheral Glue Logic, Networking Line-Card Glue Logic, Industrial Automation State Machine, LED Display Driver Controller.
PCI-to-ISA Bus Bridge
The EPM7256AETC100-5C's 256 macrocells and 84 user I/O are well-matched to PCI-to-ISA bridge designs that must decode 32-bit PCI address/data plus 24-bit ISA bus signals. The 5 ns propagation delay provides two PCI clock cycles of decode margin at 33 MHz, comfortably meeting the 11 ns setup time required by most PCI peripherals. With MultiVolt I/O supporting 5 V ISA and 3.3 V PCI on the same die, no external level-shifters are required - the device bridges the two buses directly while consuming approximately 50 mA typical ICC at 33 MHz. Place the CPLD between the PCI connector and ISA edge-finger pins, route all 32 PCI signals through dedicated input pins, and use the macrocell registers for bus-cycle state machines. The 200 MHz counter frequency also supports high-speed bus-arbitration logic.
推荐
Microcontroller Address Decoder
With 256 macrocells and 5 ns tPD, the EPM7256AETC100-5C decodes a full 24-bit microcontroller address bus and generates chip-selects for up to 16 peripherals in a single device. The deterministic 5 ns delay means chip-select assertion occurs within one 50 MHz microcontroller clock cycle, eliminating wait-states for most peripheral interfaces. Programmable power-saving modes reduce I/O current by 50% in idle decode states, important for battery-backed industrial controllers. Configure each macrocell as a wide AND-OR decode term, then register the output for clean synchronous chip-select generation. The on-chip EEPROM retains the decode map through power cycles, eliminating external PROM.
推荐
DSP Peripheral Glue Logic
The EPM7256AETC100-5C serves as the ideal companion CPLD to DSP processors (TMS320, ADSP-21xx) requiring high-speed peripheral expansion. Its 200 MHz counter frequency generates DMA control signals, frame-sync timing, and interrupt-acknowledge arbitration at full DSP clock rates. The 84 I/O pins handle 16-bit memory buses plus 8-channel DMA handshake logic, with the remaining I/O available for codec and DAC control signals. MultiVolt I/O directly interfaces legacy 5 V peripherals to modern 3.3 V DSPs, eliminating level-shifter ICs from the BOM. The 5 ns pin-to-pin delay also meets timing margins for high-speed serial-port expansion logic.
推荐
Networking Line-Card Glue Logic
In telecom line cards, the EPM7256AETC100-5C provides the bus-interface and timing-control glue between network processors, framers, and PHY devices. Its 256 macrocells implement full T1/E1 framer backplane interfaces, MDIO control for PHY management, and ATM SAR-side bus steering - all within deterministic 5 ns timing. The MultiVolt I/O interfaces 5 V legacy framers and 3.3 V PHY devices without external translators, reducing board area. The 84 user I/O count supports 8-bit UTOPIA/POS-PHY bus interfaces plus interrupt-aggregation logic. Industrial temperature variants handle outside-plant deployments where ambient temperatures vary widely.
推荐
Industrial Automation State Machine
The EPM7256AETC100-5C implements deterministic FSMs for industrial motor controllers, PLC I/O expansion, and safety-interlock logic where predictable microsecond response is critical. The 5 ns tPD yields sub-microsecond reaction time to fault inputs - critical for Category-3/4 safety circuits. JTAG boundary-scan allows in-system verification of all 84 I/O pins during manufacturing test, reducing production test cost. With 256 macrocells, a single device replaces 8-12 discrete 22V10 PALs typically used in legacy motor-drive designs, simplifying BOM and reducing PCB area by 60%. The on-chip EEPROM retains state-machine configuration through power cycles without external storage.
推荐
LED Display Driver Controller
For large LED video walls and signage displays, the EPM7256AETC100-5C drives row/column decoders and PWM brightness control with precise timing. Its 200 MHz counter frequency supports 16-bit PWM at 3 kHz refresh rate without external timing ICs. The 84 user I/O drive 8-bit row plus 8-bit column data simultaneously with row-strobe control, while remaining I/O handle brightness/multiplexing logic. MultiVolt I/O directly drives 5 V LED-driver buffers from a 3.3 V logic core. The 5 ns tPD supports high-speed multiplexing without flicker artifacts. On-chip EEPROM allows field-upgrade of display patterns and refresh algorithms without replacing the controller board.
推荐
推荐产品汇总
工程参考数据： EPM7256AETC100-5C ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EPM7256AETC100-5N | EPM7256AETC100-10N | EPM7256AETC100-10 | EPM7256AEFC100-7 | EPM7256AEFC100-5N |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | TQFP-100 | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| User I/O | 84 | 84 | 84 | 84 | 84 | 84 |
| Propagation Delay (tPD) | 5 ns | 5 ns | 10 ns | 10 ns | 7 ns | 5 ns |
| Counter Frequency (fCNT) | 200 MHz | 200 MHz | 139 MHz | 139 MHz | 167 MHz | 200 MHz |
| Temperature Grade | Commercial (0 to +70 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Industrial (-40 to +85 C) |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Programming | EEPROM / JTAG ISP | EEPROM / JTAG ISP | EEPROM / JTAG ISP | EEPROM / JTAG ISP | EEPROM / JTAG ISP | EEPROM / JTAG ISP |
关键差异点
- Fastest speed grade in the EPM7256AE family at TQFP-100 （对比 EPM7256AETC100-10)
- Commercial temperature grade for cost-optimized deployments （对比 EPM7256AETC100-5N)
- MultiVolt I/O eliminates external level-shifters （对比 EPM7160SLC84-10)
设计说明
The EPM7256AETC100-5C requires both VCCINT (3.3 V core) and VCCIO (2.5 V, 3.3 V, or 5 V I/O) supplies. Per the Altera MAX 7000A datasheet, decouple each VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the pin, and each VCCIO with a 0.1 µF plus 10 µF bulk capacitor. Estimated: at 200 MHz toggling of all 84 I/O pins at 50% activity, ICCINT rises to approximately 80-120 mA typical; design the 3.3 V regulator for at least 200 mA headroom. MultiVolt I/O allows VCCIO at 5 V while VCCINT remains at 3.3 V, simplifying mixed-voltage designs.
For JTAG in-system programming, the TCK pin requires a 10 kΩ pull-up resistor to VCCIO. Route TCK as a short, impedance-controlled trace to avoid programming failures. Per the MAX 7000A datasheet, place the JTAG connector within 50 mm of the device for reliable ISP at high TCK frequencies. Keep JTAG signals away from high-frequency switching nets and noisy power planes. Use a four-layer PCB with dedicated ground plane beneath the TQFP-100 footprint to minimize ground bounce and signal-integrity issues on the 84 I/O pins.
Do not confuse the EPM7256AETC100-5C (commercial temp, 5 ns) with the EPM7256AETC100-10 (commercial temp, 10 ns) - the parts are pin-compatible but timing analysis differs. Avoid using obsolete 5 V-only MAX 7000 (non-A) variants with this device, as their I/O banks are not MultiVolt compatible. Per the Altera MAX 7000A datasheet, ensure unused I/O pins are configured as outputs driving ground to minimize quiescent current. Note that the EPM7256AETC100-5C is non-RoHS (Pb-bearing TQFP package); for RoHS-compliant designs, consider MAX II or MAX V CPLDs instead.
合规信息
Part uses Pb-bearing TQFP-100 package per Altera MAX 7000A datasheet; non-RoHS. Commercial temperature grade only. AEC-Q100 qualification not applicable for CPLDs. REACH and conflict-minerals status not available in the verified web data.