EPM3512AQC208-3 - MAX 3000A CPLD, 512 Macrocells, 172 I/O, PQFP-208 | Altera
料号： EPM3512AQC208-3 ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $48.5 | $48.50 |
| 10 | $43.2 | $432.00 |
| 100 | $36.9 | $3,690.00 |
| 500 | $31.5 | $15,750.00 |
| 1,000 | $27.8 | $27,800.00 |
EPM3512AQC208-3 概述
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell arrays with a global interconnect fabric, sitting in the hierarchy between simple SPLDs (like GAL/PAL) and FPGAs. In a typical system, a CPLD handles interface bridging, address decoding, power-up sequencing, and peripheral glue logic before or alongside a larger processor or FPGA. The MAX 3000A family specifically targets 3.3 V core / 5 V tolerant I/O designs that require ISP (in-system programmability) and 100% pin retention across JTAG-driven firmware updates.
Key features of the EPM3512AQC208-3 include 512 macrocells organized across 16 Logic Array Blocks (LABs) of 32 macrocells each, a maximum of 172 usable I/O pins on the PQFP-208 footprint, multiVolt I/O supporting 2.5 V, 3.3 V, and 5.0 V mixed-voltage interfaces, and JTAG-compliant IEEE Std. 1149.1 boundary-scan test. The -3 speed grade positions it for cost-sensitive, mid-performance logic consolidation rather than the fastest timing closure.
Architecturally, the EPM3512AQC208-3 uses the MAX 3000A interconnect fabric, which provides fast, predictable paths through a uniform switch matrix and per-macrocell product-term logic with configurable D/T/JK/SR flip-flops. Each macrocell supports up to 32 product terms expandable through the shareable expander chain. Programming is performed in-system via JTAG using the Altera Quartus II or MAX+PLUS II toolchains, with the JTAG interface also serving as the boundary-scan test access port.
Typical applications include address decoding and chip-select generation for microcontroller or microprocessor subsystems, asynchronous bus interface bridging between 5 V and 3.3 V logic domains, glue-logic consolidation in telecom backplane equipment, industrial control PLCs, and legacy peripheral replacement on boards originally designed around discrete 74-series logic.
When designing with the EPM3512AQC208-3, allocate I/O banks carefully to avoid mixing 5 V tolerant inputs with 3.3 V outputs without proper current-limiting or level translation, and observe the PQFP-208 thermal envelope of typically 1.0 to 1.5 W maximum dissipation. Decoupling must use 0.1 uF ceramic capacitors placed within 5 mm of each VCCIO/VCCINT pin pair.
This page synthesizes distributor stock data, drop-in same-package alternatives from the same Altera MAX 3000A family, and practical design notes not typically consolidated in the original datasheet. Engineering trade-offs, automotive-grade options, and the -3 versus -7 speed-grade positioning are documented for procurement and design engineering use.
直接替换替代料： EPM3512AQC208-3 ——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： EPM3512AQC208-3 （相同外形与封装尺寸） ——差异在于 Package, In-System Programmability, Operating Temperature, Speed Grade, Logic Array Blocks (LABs).
快速对比工具——选择替代料号进行并排对比：
EPM3512AQC208-2
✅ 直接替换✓ 有现货
$18.75 / 个
查看数据手册 →EPM3512AQC208-7N
✅ 直接替换✓ 有现货
$41.41 / 个
查看数据手册 →EPM3512AQC208-10N
✅ 直接替换✓ 有现货
$42.8 / 个
查看数据手册 →EPM3512AQC208-10
✅ 直接替换✓ 有现货
$22.1 / 个
查看数据手册 →EPM3512AQC208-15N
✅ 直接替换✓ 有现货
$20.5 / 个
查看数据手册 →EPM3512AQC208-3 最大额定值与电气特性
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 512 |
| Logic Array Blocks (LABs) | 16 (32 macrocells each) |
| Maximum User I/O Pins | 172 |
| 封装 | PQFP-208 |
| Speed Grade | -3 |
| Supply Voltage - Core (VCCINT) | 3.3 V |
| I/O Bank Supply Voltage (VCCIO) | 2.5 V / 3.3 V / 5.0 V (multiVolt) |
| In-System Programmability | Yes (IEEE Std. 1532 compliant) |
| Boundary-Scan Test | Yes (IEEE Std. 1149.1 / JTAG) |
| Non-Volatile Configuration | Yes (EEPROM-based) |
| 安装类型 | Surface Mount |
EPM3512AQC208-3 pqfp-208 引脚配置指南
EPM3512AQC208-3（pqfp-208 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： EPM3512AQC208-3.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EPM3512AQC208-3 适用于 7 应用s: Address Decoding and Chip-Select Generation, 5 V to 3.3 V Asynchronous Bus Interface Bridge, Telecom Backplane Glue Logic, Industrial PLC I/O Expansion, Legacy 74-Series Logic Consolidation, Power-Up Sequencing and Reset Distribution, Microcontroller Peripheral Expansion.
Address Decoding and Chip-Select Generation
The EPM3512AQC208-3 is well-suited to multi-chip-select address decoding in 8-bit and 16-bit microcontroller or 16-bit x86 subsystem designs because its 512 macrocells easily absorb the 8-to-32-bit decoder equations while the PQFP-208 footprint exposes up to 172 user I/O pins for downstream device enables. The non-volatile EEPROM-based configuration means the chip-select map is available at power-up with no bootloader delay, which is critical for systems that boot from ROM with strict timing budgets. Designers typically map a 24-bit address bus through a small portion of the LABs to generate 8-16 chip-select outputs, leaving the remaining macrocells free for handshake and wait-state logic. The -3 speed grade keeps the propagation delay short enough for a 33 MHz bus with one wait state.
推荐
5 V to 3.3 V Asynchronous Bus Interface Bridge
Mixed-voltage designs that interwork legacy 5 V peripheral buses with modern 3.3 V processors are a strong fit for the EPM3512AQC208-3 because its multiVolt I/O banks accept 5 V inputs on a 3.3 V VCCINT core without external level shifters. The 172 available I/O pins accommodate both the 5 V side and the 3.3 V side of the bus plus control handshakes. Engineers commonly implement direction-control logic, bus-swap byte steering, and protocol translation (for example, 5 V ISA to 3.3 V local bus) in the LAB fabric. The non-volatile configuration means the bridge is live at power-on, removing the boot-time complexity of SRAM-based FPGAs.
推荐
Telecom Backplane Glue Logic
Telecom backplane designs frequently need deterministic, instant-on glue logic between line-card ASICs and a control processor, and the EPM3512AQC208-3 was historically a default choice because its EEPROM-backed configuration recovers state on power-up with no firmware load. The 172 I/O pins handle LVTTL clock distribution, alarm aggregation, JTAG chain management, and reset sequencing across line-card interfaces. The PQFP-208 package supports conventional reflow profiles on standard FR-4 backplanes without requiring microvia or sequential lamination. The -3 speed grade is sufficient for 25-50 MHz backplane control planes typical of legacy TDM and early packet designs.
推荐
Industrial PLC I/O Expansion
Industrial PLCs and process controllers use the EPM3512AQC208-3 to debounce and condition digital inputs, sequence relay drivers, and implement safety-rated logic in a non-volatile, deterministic fabric. The PQFP-208 footprint provides the I/O headroom needed for 32-64 channel digital input modules and 16-32 channel output modules, while the 512 macrocells hold encoder quadrature decoders, PWM generators, and communication protocol state machines. Industrial users benefit from the long-term Altera/Intel device support and the in-system JTAG programmability that simplifies field firmware updates over IEEE Std. 1532. The -3 speed grade covers typical 1-10 kHz industrial I/O cycle times comfortably.
推荐
Legacy 74-Series Logic Consolidation
Boards originally built around discrete 74LS, 74HC, and 74F glue logic can be consolidated onto a single EPM3512AQC208-3, replacing tens of SSI/MSI packages with one PQFP-208 CPLD. Each LAB can absorb multiple decoder, multiplexer, and flip-flop functions, and the JTAG chain plus boundary-scan support simplifies board test by replacing bed-of-nails fixtures with structural test vectors. Power consumption typically drops by 30-60 percent because the CPLD shuts down unused macrocells while discrete logic draws static bias current. The -3 speed grade matches the 5-15 ns propagation delays of the original 74LS family closely.
推荐
Power-Up Sequencing and Reset Distribution
Multi-rail systems require a precise power-up and power-down sequence to avoid latch-up in mixed-voltage ASICs, and the EPM3512AQC208-3 is well-matched to this role because its non-volatile configuration is live the instant VCCINT crosses its threshold. A few dozen macrocells implement a chained enable sequencer with programmable delays using on-chip timers or external RC networks monitored by input pins. The PQFP-208 package exposes enough I/O to drive 8-12 power-good signals, monitor 4-8 voltage rails via comparators, and orchestrate the reset tree. Designers often pair the CPLD with external MOSFET drivers to handle high-current rail switching.
推荐
Microcontroller Peripheral Expansion
When a microcontroller lacks sufficient timers, UARTs, or PWM channels, the EPM3512AQC208-3 can serve as a soft-peripheral co-processor that exposes standard register-mapped interfaces to the MCU over a parallel or SPI bus. The 512 macrocells hold several 16-bit timer/counter modules, multiple UART cores, and PWM generators, while the 172 I/O pins can drive external H-bridges, optocouplers, and displays. Because the CPLD is non-volatile, the peripheral set is available at boot with no firmware download. The -3 speed grade is fast enough for 10-20 MHz parallel bus interfacing with common 8/16-bit microcontrollers such as the 8051 or HCS12 families.
推荐
推荐产品汇总
工程参考数据： EPM3512AQC208-3 ——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 | EPM3512AQC208-2 | EPM3512AQC208-7N | EPM3512AQC208-10N | EPM3512AQC208-10 | EPM3512AQC208-15N |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PQFP-208 | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Macrocells | 512 | 512 | 512 | 512 | 512 | 512 |
| Maximum User I/O | 172 | 172 | 172 | 172 | 172 | 172 |
| Speed Grade | -3 | -2 (faster) | -7 (slower) | -10 (slower) | -10 (slower) | -15 (slowest) |
| VCCINT (Core) | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| VCCIO (multiVolt) | 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 | 2.5 / 3.3 / 5.0 V | 2.5 / 3.3 / 5.0 V |
| Lead-Free (N suffix) | No (standard) | No (standard) | Yes (N suffix) | Yes (N suffix) | No (standard) | Yes (N suffix) |
| In-System Programmability | IEEE Std. 1532 | IEEE Std. 1532 | IEEE Std. 1532 | IEEE Std. 1532 | IEEE Std. 1532 | IEEE Std. 1532 |
| Lifecycle Status | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy |
关键差异点
- Slowest speed grade in the EPM3512AQC208 PQFP-208 family （对比 EPM3512AQC208-2)
- Larger macrocell count than MAX 3000A 256-macrocell devices （对比 EPM3256AQC208-10)
- PQFP-208 surface-mount vs BGA-256 alternative （对比 EPM3512AFC256-7N)
设计说明
Estimated: The PQFP-208 package at 0.5 mm lead pitch requires reflow profiles consistent with JEDEC J-STD-020, and PCB land patterns must follow the IPC-7351 nominal density guidelines with a 0.30 mm land width and 1.60 mm pad length. Place a 0.1 uF X7R ceramic decoupling capacitor within 5 mm of every VCCINT and VCCIO pin pair, and add 10 uF tantalum or polymer bulk capacitors at each package corner to suppress VCCIO bounce during simultaneous switching outputs (SSO). Use four-layer stack-up with continuous ground plane under the device to provide a low-impedance return path for the high-speed JTAG and clock signals.
The multiVolt I/O architecture allows the EPM3512AQC208-3 to drive 5 V TTL inputs and accept 5 V signals on its 3.3 V VCCINT, but the datasheet restricts 5 V tolerance to specific VCCIO bank configurations. When mixing 5 V input signals on a bank whose VCCIO is set to 3.3 V, the datasheet limits the input high voltage to VCCIO + 0.5 V absolute maximum unless the corresponding I/O standard allows 5 V tolerance. Always check the MAX 3000A datasheet I/O standard table and enable the appropriate PCI or 5 V tolerant I/O standard in the Quartus II pin planner before connecting legacy 5 V buses.
Do not assume the EPM3512AQC208-3, EPM3512AQC208-7, and EPM3512AQC208-10 are interchangeable in timing-closure designs - the speed-grade suffix indicates propagation delay differences that may exceed the slack in critical paths. Always re-run static timing analysis after substituting one speed grade for another. Additionally, ensure the JTAG chain TCK frequency does not exceed 10 MHz during in-system programming because some ByteBlasterMV drivers throttle above this rate. Finally, observe the MAX 3000A datasheet's power-on reset requirements: VCCINT must ramp monotonically to 3.3 V within the datasheet-specified tRAMP window to guarantee correct configuration load.
合规信息
RoHS, REACH, lead-free, and halogen-free status for the EPM3512AQC208-3 base part (without N suffix) are not confirmed in the verified web data; the N suffix variants in the same family are typically lead-free per Altera/Intel catalog conventions but require datasheet verification.
