EPM3256ATC144-10AA - MAX 3000A CPLD, 256 Macrocells, 10ns TQFP-144 | Altera
料号： EPM3256ATC144-10AA ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $19.8 | $198.00 |
| 100 | $16.4 | $1,640.00 |
| 500 | $13.95 | $6,975.00 |
| 1,000 | $11.6 | $11,600.00 |
EPM3256ATC144-10AA 概述
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell blocks on a single chip with a central interconnect. Within the broader taxonomy, a CPLD is a sub-category of programmable logic devices (PLDs), which sit alongside FPGAs as the two principal families of digital logic ICs. CPLDs are typically chosen for glue logic, bus decoding, state-machine control, and boot-loading tasks where deterministic timing and instant-on non-volatile configuration are required.
Key features of the EPM3256ATC144-10AA include 116 user I/O pins, in-system programmability (ISP) compliant with IEEE Std. 1532, and a typical maximum operating frequency suitable for general-purpose glue-logic and peripheral interfacing. The device is built on a 5K-gate CMOS process and supports the Quartus design tool flow for schematic, VHDL, and Verilog entry.
Technically, the MAX 3000A architecture uses EEPROM configuration cells, meaning the device retains its logic implementation without an external boot PROM. The macrocell includes a programmable AND/OR array with a product-term allocator and a register that can be configured as D, T, JK, or SR flip-flop, providing flexibility for synchronous or combinatorial logic.
Typical applications include bus-interface bridging (e.g., address decoding between a microcontroller and external peripherals), glue logic on legacy parallel buses, I/O expansion for ASICs and microprocessors, power-sequencing controllers, and small state-machine controllers in industrial control boards.
When designing with this part, ensure that all VCCIO banks are powered before configuration begins and that JTAG pins (TCK, TMS, TDI, TDO) are properly pulled to avoid spurious configuration. Multi-voltage I/O requires that the VCCIO supply matches the driven external device; mixing 5 V and 3.3 V signals requires separate VCCIO banks.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing and substitution decisions.
直接替换替代料： EPM3256ATC144-10AA ——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： EPM3256ATC144-10AA （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, JTAG Support, Device Type, Propagation Delay (tPD).
快速对比工具——选择替代料号进行并排对比：
EPM3256ATC144-10N
✅ 直接替换✓ 有现货
$14.5 / 个
查看数据手册 →EPM3256ATC144-10
✅ 直接替换✓ 有现货
$9.75 / 个
查看数据手册 →EPM3256ATC144-7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$17.06 / 个
查看数据手册 →EPM3256ATC144-10AA 最大额定值与电气特性
| Family | MAX 3000A |
| Device Type | CPLD - Complex Programmable Logic Device |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Propagation Delay (tPD) | 10 ns |
| User I/O Pins | 116 |
| Maximum Operating Frequency | 95.2 MHz |
| Core Voltage (VCCINT) | 3.3 V |
| I/O Voltage (VCCIO) | 2.5 V / 3.3 V / 5.0 V |
| Technology | CMOS, EEPROM-based configuration |
| 封装 | 144-pin TQFP |
| 安装类型 | Surface Mount |
| 工作温度 | 0C to +70C (Commercial) |
| In-System Programming | IEEE Std. 1532 compliant |
EPM3256ATC144-10AA 引脚配置
| 引脚 1 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| 引脚 16 | I/O — User I/O pin |
| 引脚 17 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 引脚 31 | I/O — User I/O pin |
| 引脚 32 | I/O — User I/O pin |
| 引脚 33 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| 引脚 78 | I/O — User I/O pin |
| 引脚 79 | I/O — User I/O pin |
| 引脚 80 | I/O — User I/O pin |
| 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 | GND — Ground |
| 引脚 89 | I/O — User I/O pin |
| 引脚 90 | I/O — User I/O pin |
| 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 | GND — Ground |
| 引脚 100 | I/O — User I/O pin |
| 引脚 101 | I/O — User I/O pin |
| 引脚 102 | I/O — User I/O pin |
| 引脚 103 | I/O — User I/O pin |
| 引脚 104 | I/O — User I/O pin |
| 引脚 105 | I/O — User I/O pin |
| 引脚 106 | I/O — User I/O pin |
| 引脚 107 | I/O — User I/O pin |
| 引脚 108 | I/O — User I/O pin |
| 引脚 109 | I/O — User I/O pin |
| 引脚 110 | GND — Ground |
| 引脚 111 | TDI — JTAG Test Data In |
| 引脚 112 | TMS — JTAG Test Mode Select |
| 引脚 113 | TCK — JTAG Test Clock |
| 引脚 114 | NC — Not connected (per datasheet) |
| 引脚 115 | VCCINT — Core supply 3.3 V |
| 引脚 116 | NC — Not connected (per datasheet) |
| 引脚 117 | NC — Not connected (per datasheet) |
| 引脚 118 | VCCIO — I/O supply 2.5/3.3/5.0 V |
| 引脚 119 | NC — Not connected (per datasheet) |
| 引脚 120 | NC — Not connected (per datasheet) |
| 引脚 121 | NC — Not connected (per datasheet) |
| 引脚 122 | VCCINT — Core supply 3.3 V |
| 引脚 123 | NC — Not connected (per datasheet) |
| 引脚 124 | NC — Not connected (per datasheet) |
| 引脚 125 | VCCIO — I/O supply 2.5/3.3/5.0 V |
| 引脚 126 | NC — Not connected (per datasheet) |
| 引脚 127 | NC — Not connected (per datasheet) |
| 引脚 128 | NC — Not connected (per datasheet) |
| 引脚 129 | VCCINT — Core supply 3.3 V |
| 引脚 130 | GND — Ground |
| 引脚 131 | NC — Not connected (per datasheet) |
| 引脚 132 | NC — Not connected (per datasheet) |
| 引脚 133 | VCCIO — I/O supply 2.5/3.3/5.0 V |
| 引脚 134 | NC — Not connected (per datasheet) |
| 引脚 135 | TDO — JTAG Test Data Out |
| 引脚 136 | NC — Not connected (per datasheet) |
| 引脚 137 | NC — Not connected (per datasheet) |
| 引脚 138 | VCCINT — Core supply 3.3 V |
| 引脚 139 | NC — Not connected (per datasheet) |
| 引脚 140 | NC — Not connected (per datasheet) |
| 引脚 141 | VCCIO — I/O supply 2.5/3.3/5.0 V |
| 引脚 142 | NC — Not connected (per datasheet) |
| 引脚 143 | NC — Not connected (per datasheet) |
| 引脚 144 | GND — Ground |
典型应用
EPM3256ATC144-10AA 适用于 6 应用s: Bus Address Decoding, Power-Sequencing Controller, Industrial Control Glue Logic, Legacy Peripheral I/O Expansion, State-Machine Controller, Communications Interface Bridging.
Bus Address Decoding
The EPM3256ATC144-10AA's 256 macrocells and 10 ns propagation delay make it well-suited for address decoding between a microcontroller/microprocessor and external peripherals such as SRAM, Flash, and registers. With 116 user I/Os the device can handle wide address plus chip-select fan-out, while the deterministic 10 ns tPD supports glue-logic timing on legacy 8/16/32-bit buses. The EEPROM-based configuration ensures instant-on decoding at power-up without boot delay, critical in industrial control boards where predictable bus response is required.
推荐
Power-Sequencing Controller
The EPM3256ATC144-10AA can implement multi-rail power-up/power-down sequencing logic for systems with 3.3 V, 2.5 V, and 5 V rails, leveraging its multi-voltage VCCIO banks to interface directly with each supply domain. With 256 macrocells the device can drive dozens of enable and PG (power-good) signals, while the 10 ns timing easily meets typical 1 ms sequencing intervals. Deterministic EEPROM configuration ensures the sequence starts immediately at power-on, which is critical for ASICs and FPGAs that require specific rail order.
推荐
Industrial Control Glue Logic
Factory automation and process-control boards often need custom logic to bridge sensor inputs, relay drivers, and PLC backplanes. The EPM3256ATC144-10AA's 5K-gate capacity and 116 I/Os cover moderate-complexity state machines, counter/timer chains, and PWM generation. The commercial 0C to +70C operating range fits indoor control cabinets, and the 144-TQFP package is straightforward to hand-prototype or assembly-line build. Engineers can implement the entire glue-logic layer in a single device, reducing BOM and PCB area versus discrete 74-series logic.
推荐
Legacy Peripheral I/O Expansion
When an ASIC or microprocessor lacks sufficient GPIO or specialized peripheral functions, the EPM3256ATC144-10AA can be used as an I/O expansion device. Its multi-voltage VCCIO banks (2.5/3.3/5.0 V) allow direct interfacing with mixed-voltage legacy peripherals without external level shifters. With 116 user I/Os the part can expand a host MCU's limited pin count into a full peripheral interface including UART, SPI, I2C bit-banging, and parallel data buses. The 10 ns tPD ensures glue-logic propagation delay stays well within one peripheral clock cycle.
推荐
State-Machine Controller
Finite state machines for protocol handling, traffic-light sequencing, motor commutation, or user-interface navigation fit naturally in the EPM3256ATC144-10AA's macrocell architecture. Each macrocell provides a configurable D/T/JK/SR flip-flop with product-term allocation, so multi-state controllers with 20-50 states can be implemented with significant margin. The 95.2 MHz internal frequency supports fast state transitions, and the 10 ns pin-to-pin delay enables the FSM to interface directly with external clocked logic without timing violations.
推荐
Communications Interface Bridging
The EPM3256ATC144-10AA can bridge between incompatible communications interfaces - for example, converting a parallel bus to UART, or implementing custom protocols between sensors and a host processor. With 116 I/Os the device can handle wide parallel interfaces plus serial side-channels simultaneously. The 3.3 V core combined with multi-voltage VCCIO allows direct connection to 5 V legacy UART/RS-232 line drivers and 2.5 V modern MCUs in the same design, eliminating level-shifters in bridging applications.
推荐
推荐产品汇总
工程参考数据： EPM3256ATC144-10AA ——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 | EPM3256ATC144-10N | EPM3256ATC144-10 | EPM3256ATC144-7 |
|---|---|---|---|---|
| Package | 144-pin TQFP | 144-pin TQFP - same | 144-pin TQFP - same | 144-pin TQFP - same |
| Brand | Altera | Altera | Altera | Altera |
| Macrocells | 256 | 256 | 256 | 256 |
| Usable Gates | 5,000 | 5,000 | 5,000 | 5,000 |
| Propagation Delay (tPD) | 10 ns | 10 ns | 10 ns | 7 ns (faster) |
| User I/O Pins | 116 | 116 | 116 | 116 |
| Core Voltage (VCCINT) | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| I/O Voltage (VCCIO) | 2.5 / 3.3 / 5.0 V | 2.5 / 3.3 / 5.0 V | 2.5 / 3.3 / 5.0 V | 2.5 / 3.3 / 5.0 V |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) |
关键差异点
- Functionally identical -10N suffix variant widely available （对比 EPM3256ATC144-10N)
- Faster -7 speed grade available in same package （对比 EPM3256ATC144-7)
- Multi-voltage I/O support eliminates level shifters （对比 EPM3256ATC144-10N)
设计说明
The EPM3256ATC144-10AA requires two distinct supplies: VCCINT at 3.3 V for the core logic and EEPROM configuration cells, and VCCIO at 2.5 V, 3.3 V, or 5.0 V for the I/O banks. Both rails must ramp together within the datasheet-specified power-on-reset window to ensure proper configuration. Decouple each VCCINT and VCCIO pin with a 0.1 uF ceramic capacitor placed within 5 mm of the package pin, and add a bulk 10-100 uF tantalum or polymer capacitor near the package to suppress switching transients. Designers should refer to the MAX 3000A datasheet power-supply sequencing section for the exact tR (rise time) and tF (fall time) limits.
A common mistake when designing with the EPM3256ATC144-10AA is leaving JTAG pins (TCK, TMS, TDI, TDO) floating. All JTAG inputs must be pulled to a defined logic level - typically TCK pulled low through 10 kohm, TMS and TDI pulled high through 10 kohm - to prevent spurious entry into boundary-scan mode that can disrupt normal operation. Additionally, ensure the OE (output enable) and GLOBAL CLK signals are correctly assigned during compilation; otherwise unused I/O pins may default to a high-impedance state that appears as floating inputs at the board level.
For reliable ISP (in-system programming), keep JTAG signal traces short (under 50 mm) and route them away from fast-switching signal lines to minimize crosstalk during programming. The 144-pin TQFP package has 0.5 mm pitch leads - use a PCB footprint with 0.25 mm via-in-pad or dog-bone fan-out to maintain manufacturability. Provide a solid ground plane on layer 2 beneath the device to improve thermal dissipation and reduce EMI; the device typically dissipates less than 500 mW but heat-sinking via the ground plane is good practice.
合规信息
Compliance data not present in the Verified Web Data; RoHS/REACH status should be confirmed with the distributor before purchase given the obsolete lifecycle.