EPM3032ALC44-7 - 32-Macrocell CPLD, 7.5ns, 44-PLCC | Altera
料号： EPM3032ALC44-7 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.51 | $1.51 |
| 10 | $1.36 | $13.60 |
| 100 | $1.21 | $121.00 |
| 500 | $1.09 | $545.00 |
| 1,000 | $0.95 | $950.00 |
EPM3032ALC44-7 概述
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs/PLAs and large FPGAs in the programmable logic hierarchy: SPLD -> CPLD -> FPGA. Unlike SRAM-based FPGAs, CPLDs use on-chip EEPROM or flash to store configuration, so they power up instantly without an external boot PROM. The MAX 3000A architecture is organized into Logic Array Blocks (LABs) interconnected by a programmable interconnect array (PIA); each macrocell contains a product-term AND/OR array plus a programmable flip-flop. This product-term architecture gives CPLDs their signature deterministic timing and predictable fan-out delay, which is why CPLDs remain preferred for address decoding, bus arbitration, and reset distribution.
Key features of the EPM3032ALC44-7 include 32 macrocells across 2 LABs, 34 usable I/O pins, 2 global clock networks, 3.3 V core and I/O supply with 5.0 V tolerant I/O pins, JTAG (IEEE 1149.1) ISP, open-drain or programmable pull-up I/O options, and a commercial 0 to 70 °C operating temperature grade. The MAX 3000A family supports MultiVolt I/O that can interface with 5.0 V, 3.3 V, and 2.5 V logic without level shifters, simplifying mixed-voltage designs.
Typical applications include address decoding and chip-select generation in microprocessor and microcontroller systems, bus arbitration logic for PCI, ISA, and VME backplanes, glue-logic consolidation that replaces multiple 74-series TTL/CMOS gates, state-machine controllers for peripherals and motor drives, and reset / watchdog sequencing for multi-rail power systems. The 7.5 ns propagation delay supports synchronous designs up to roughly 60 MHz externally and 138.9 MHz fMAX internally.
When designing with this part, reserve one of the four JTAG pins (TDI, TDO, TMS, TCK) in your schematic even if in-system programming is not used in production - these pins must not be left floating, or the JTAG state machine may latch into an undefined state. Place a 0.1 µF decoupling capacitor within 5 mm of each VCC pin and a bulk 10 µF tantalum capacitor near the supply entry point. Unused I/O pins should be left floating; do not externally pull them up or down, as this can conflict with the JTAG boundary-scan pull-ups during programming.
This page synthesizes distributor pricing, drop-in same-package alternatives from the MAX 3000A family, and practical design notes not collected in the manufacturer datasheet.
直接替换替代料： EPM3032ALC44-7 ——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： EPM3032ALC44-7 （相同外形与封装尺寸） ——差异在于 Package, Mounting Type, Operating Temperature, Usable Gates, Pin-to-Pin Delay (tPD).
快速对比工具——选择替代料号进行并排对比：
EPM3032ALC44-4N
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.32 / 个
查看数据手册 →EPM3032ALC44-10N
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.94 / 个
查看数据手册 →EPM3032ALC44-4
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.1 / 个
查看数据手册 →EPM3032ALC44-10
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.98 / 个
查看数据手册 →EPM3032ALC44-7N
✅ 直接替换✓ 有现货
$1.05 / 个
查看数据手册 →EPM3064ALC44-10
✅ 直接替换✓ 有现货
$4.12 / 个
查看数据手册 →EPM3032ALC44-7 最大额定值与电气特性
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Logic Elements / Macrocells | 32 macrocells |
| Logic Array Blocks (LABs) | 2 |
| System Gates | 600 |
| Number of User I/O Pins | 34 |
| Global Clocks | 2 |
| Propagation Delay (tPD1, max) | 7.5 ns |
| Maximum Internal Frequency (fMAX) | 138.9 MHz |
| Supply Voltage (VCCINT / VCCIO) | 3.3 V |
| I/O Tolerant Voltage | 2.5 V / 3.3 V / 5.0 V (MultiVolt) |
| Program Memory Type | EEPROM |
| In-System Programming (ISP) | Yes - IEEE 1149.1 JTAG |
| 工作温度 | 0 °C to +70 °C (Commercial) |
| 封装 | 44-pin PLCC (J-Lead), 16.59 x 16.59 mm, 3.81 mm height |
| 安装类型 | Surface Mount |
| RoHS 状态 | Not Compliant (per Arrow listing) |
| Part Status | Obsolete |
| ECCN | EAR99 |
EPM3032ALC44-7 引脚配置
| 引脚 1 | I/O — User I/O pin (bidirectional, MultiVolt) |
| 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 | GND — Ground |
| 引脚 11 | I/O — User I/O pin |
| 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 |
| 引脚 16 | TMS — JTAG Test Mode Select |
| 引脚 17 | TCK — JTAG Test Clock |
| 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 | VCC — Supply voltage (3.3 V) |
| 引脚 22 | I/O — User I/O pin |
| 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 | GND — Ground |
| 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 | GLOBAL_CLK1 — Global clock input 1 |
| 引脚 32 | GLOBAL_CLK2 — Global clock input 2 / GCLK2 |
| 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 | I/O — User I/O pin |
| 引脚 41 | I/O — User I/O pin |
| 引脚 42 | VCC — Supply voltage (3.3 V) |
| 引脚 43 | I/O — User I/O pin |
| 引脚 44 | TDO — JTAG Test Data Out |
典型应用
EPM3032ALC44-7 适用于 6 应用s: Microprocessor Address Decoding & Chip-Select Generation, Bus Arbitration & Glue Logic Consolidation, Peripheral State-Machine Controllers, Reset Sequencer & Power-Supply Supervisor, Industrial Control & Legacy Interface Bridging, JTAG Boundary-Scan Test Controller.
Microprocessor Address Decoding & Chip-Select Generation
The EPM3032ALC44-7 is a classic choice for address decoding and chip-select generation in 8-bit, 16-bit, and 32-bit microprocessor and microcontroller systems. Its 7.5 ns pin-to-pin delay comfortably meets the 60-66 MHz bus timing of legacy 486, 68040, PowerPC, and embedded ARM7/ARM9 systems where deterministic propagation is more important than logic density. The 32 macrocells provide enough product terms to decode 8-12 address lines with overlapping chip-select windows, and the EEPROM-based configuration powers up already programmed - no boot PROM needed. With 34 user I/O pins available, the same device can serve 4-8 chip-select outputs plus reset, ready, and bus-error logic on a single 3.3 V rail.
推荐
Bus Arbitration & Glue Logic Consolidation
The EPM3032ALC44-7 consolidates dozens of 74-series TTL/CMOS glue-logic packages (74LS138 decoders, 74LS245 transceivers, 74LS244 buffers, 74LS08 AND gates) into a single programmable device, reducing PCB area, BOM count, and inventory. Its 7.5 ns timing aligns with PCI, VME, ISA, and VXI backplane specifications, making it suitable for industrial bus adapters where deterministic arbitration and bus-request grant sequencing are required. The 34 I/O pins easily accommodate multi-master arbitration, bus-grant chains, and interrupt steering. EEPROM-based non-volatile storage means the design comes up in the correct state even after power cycling - critical for industrial systems that must boot reliably without operator intervention.
推荐
Peripheral State-Machine Controllers
The EPM3032ALC44-7's product-term AND/OR macrocell architecture is purpose-built for implementing Moore and Mealy state machines that control peripherals such as UARTs, parallel ports, keypads, LCD interfaces, and stepper motor drivers. Each of the 32 macrocells holds a state register plus the next-state decode logic, and the 138.9 MHz fMAX supports state-machine clock rates up to 70 MHz externally with one clock per state transition. The 3.3 V core with 5.0 V tolerant MultiVolt I/O lets the device drive legacy 5 V peripherals directly without external buffers. Engineers commonly implement UART baud-rate generators, I2C/SPI master controllers, and quadrature decoder state machines in this part.
推荐
Reset Sequencer & Power-Supply Supervisor
Multi-rail systems (CPU core, DDR memory, analog blocks, I/O rings) require precise power-up and power-down sequencing to prevent latch-up and bus contention. The EPM3032ALC44-7 is well suited as a reset and power-good sequencer: its 34 I/O pins can monitor 8-10 power-good signals and generate individually timed reset outputs for each rail. The 7.5 ns delay provides sub-microsecond response to brown-out events, and the non-volatile EEPROM storage ensures the sequencing order is preserved through power cycles. The commercial 0-70 °C temperature grade suits desktop and indoor industrial equipment; for outdoor or automotive use, migrate to the EPM3032A-TC44 industrial temperature variant.
推荐
Industrial Control & Legacy Interface Bridging
Industrial PLCs, CNC controllers, and factory-automation subsystems still rely on legacy parallel and serial interfaces that benefit from programmable glue logic. The EPM3032ALC44-7 bridges between 5 V and 3.3 V logic thanks to its MultiVolt I/O, and its JTAG ISP allows field re-programming through a 4-wire header for firmware updates without removing the board. The 7.5 ns delay supports real-time control loops running at 50-100 kHz with deterministic response. The 44-PLCC package is socket-compatible, allowing easy field replacement in legacy systems where PLCC sockets are already designed in. Engineers use this part to implement H-bridge PWM timing, opto-isolated input debouncing, and step/direction pulse generation.
推荐
JTAG Boundary-Scan Test Controller
The EPM3032ALC44-7 includes an IEEE 1149.1 JTAG interface that supports both in-system programming and boundary-scan testing. As a downstream JTAG controller it can chain multiple JTAG devices, generate test patterns, and isolate faulty nodes on densely populated boards. Its 34 I/O pins can implement TAP controllers, instruction registers, and bypass-multiplexer logic for multi-device scan chains. The non-volatile EEPROM storage means the boundary-scan personality loads instantly at power-up without interfering with the JTAG state machine. This role is especially valuable in production test fixtures for legacy boards where the original JTAG controller IC has been discontinued.
推荐
推荐产品汇总
工程参考数据： EPM3032ALC44-7 ——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 | EPM3032ALC44-4N | EPM3032ALC44-10N | EPM3032ALC44-7N | EPM3064ALC44-10 |
|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 44-PLCC (J-Lead) | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same | 44-PLCC (J-Lead) - same |
| Macrocells | 32 | 32 | 32 | 32 | 64 |
| System Gates | 600 | 600 | 600 | 600 | 1250 |
| Pin-to-Pin Delay (tPD1) | 7.5 ns | 5 ns (faster) | 10 ns (slower) | 7.5 ns (identical) | 10 ns (slower) |
| User I/O Pins | 34 | 34 | 34 | 34 | 34 |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Lead Finish / RoHS | SnPb / Not RoHS | Lead-free (N suffix) / RoHS | Lead-free (N suffix) / RoHS | Lead-free (N suffix) / RoHS | SnPb / Not RoHS |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
关键差异点
- Balanced speed-grade choice in the MAX 3000A family （对比 EPM3032ALC44-10N)
- Lower logic density preserves timing headroom and lower power （对比 EPM3064ALC44-10)
- Non-volatile EEPROM vs SRAM-based alternatives （对比 Xilinx XC9500XL series)
- Legacy PLCC package enables field-replacement of existing designs （对比 Modern TQFP MAX II (EPM240T100C5N))
设计说明
Estimated: at 3.3 V VCC with all 34 I/O pins switching at 50 MHz with 20 pF load each, the dynamic supply current reaches roughly 80-120 mA. Place one 0.1 µF ceramic decoupling capacitor within 5 mm of each of the two VCC pins (21 and 42) plus one 10 µF tantalum bulk capacitor near the supply entry point. The two GND pins (10 and 27) must both be connected to a low-impedance ground plane. A ferrite bead on VCC can reduce switching-noise injection into adjacent analog sections.
The 44-PLCC package has typical lead inductance of 5-8 nH which limits useful bandwidth to about 100 MHz. For clock-distribution applications above 50 MHz, route clocks on inner PCB layers with controlled impedance (50 Ω microstrip) and keep clock traces shorter than 50 mm. The two dedicated global clock inputs (GCLK1 / GCLK2) should be used for any signal that drives more than 16 macrocells - normal I/O pins used as clocks introduce skew that the global clock tree avoids.
Do not leave the four JTAG pins (TDI, TDO, TMS, TCK) floating. The MAX 3000A JTAG state machine has internal pull-ups, but external pull-ups of 10 kΩ to VCC are recommended if the JTAG port is not used in production, otherwise ESD events or board noise can latch the TAP into an undefined state and disrupt normal user-mode operation. TCK must be tied LOW through 10 kΩ if JTAG is unused to prevent unintended clocking of the TAP. Unused user I/O pins should be left unconnected (floating); the device enables internal weak pull-ups on these pins during JTAG programming.
Sockets are highly recommended for 44-PLCC CPLDs in development and field-service applications because the J-lead package is awkward to rework and the obsolete part status may force board-level replacement. Use machine-pin PLCC sockets (e.g. 3M 8444-21B1-RK or equivalent) with gold-plated contacts. For production volumes, consider migrating to a TQFP-100 MAX II device such as the EPM240T100C5N, which uses standard SMT reflow and offers higher logic density at comparable cost.
合规信息
RoHS non-compliant per Arrow Electronics product listing (lead-finish is SnPb). Part is marked Obsolete. For RoHS-compliant production, use the lead-free N-suffix variant (EPM3032ALC44-7N) or migrate to a MAX II device. REACH compliance inferred from manufacturer declaration; no specific data available in verified web data.
