EPM5032JC25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera
MPN: EPM5032JC25 ✗ Cuối đờiEPM5032JC25 Tóm tắt
A programmable logic device is an integrated circuit whose logic function and interconnect are defined by on-chip non-volatile configuration rather than by hard-wired gates. EPLDs sit in the hierarchy between simple SPLDs and CPLDs/FPGAs: they share the AND-OR array style of classical PALs but add programmable output macrocells and a global interconnect, allowing denser designs than 22V10-style PALs while keeping deterministic timing. The EPM5032 is an early second-generation EPLD that targets glue-logic and decoder/registered-I/O replacement in 5 V systems.
Key features include 32 macrocells with individual programmable I/O polarity, 7 dedicated inputs, 16 bidirectional I/O pins, 24 total inputs, and 16 registered outputs. The device is implemented in Altera's CMOS EPROM process, is UV-erasable (windowed packages) or one-time-programmable (OTP) in plastic, and operates from a single 5 V supply with TTL-level I/O. The PIA delivers uniform 25 ns pin-to-pin delays regardless of which macrocells drive a given interconnect, simplifying timing closure compared to channel-routed FPGAs.
Typical applications include address decoding and chip-select generation for 8-bit and 16-bit microprocessor systems, bus-interface glue logic, state-machine controllers, peripheral-interface adapters, and DMA/arbitration sequencers. The deterministic 25 ns delay makes it suitable for substituting legacy bipolar and CMOS PAL/GAL devices while delivering higher macrocell count on a single chip.
When designing with the EPM5032JC25, plan the design around the JT- or JEDEC-fuse map, allocate product terms per macrocell carefully (the part uses 100% product-term sharing via the PIA), and provide a clean 5 V rail with adequate decoupling. Designers migrating from 22V10 PALs can reuse Boolean equations, but should re-budget product terms because the macrocells have a different sum-term structure than classic PALs.
This page consolidates distributor availability, same-die speed/packaging variants, and design guidance for the EPM5032JC25 that are not collected on a single Altera datasheet PDF, helping engineers sourcing this obsolete part quickly.
Bộ thay thế dễ dàng lắp đặt cho EPM5032JC25 — 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 EPM5032JC25 (cùng hình factor và footprint) — khác nhau ở Package, Architecture, Macrocells, Mounting Type, Device Type.
EPM5032JC-20
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM5032JC
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM5032DC-25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM5032DM-25
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EPM5016DC-20
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM5032JC25 Tỷ lệ tối đa & tính chất điện
| Family | MAX 5000 |
| Device | EPM5032 |
| Logic Elements | 32 macrocells |
| Propagation Delay (tPD) | 25 ns |
| Maximum Internal Frequency | 62.5 MHz |
| Product Terms | 320 |
| Flip-Flops | 32 |
| Dedicated Inputs | 7 |
| Bidirectional I/O Pins | 16 |
| Total Inputs to Array | 24 |
| Số lượng đầu ra | 16 |
| Architecture | PAL-type macrocells with global Programmable Interconnect Array (PIA) |
| Technology | CMOS EPROM, UV-erasable (windowed) / OTP |
| Điện áp cung cấp | 5 V (TTL-level I/O) |
| Hộp | 28-pin PLCC (JC) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân EPM5032JC25
| Chân 1 | I/O0 — Bidirectional I/O pin 0 |
| Chân 2 | I/O1 — Bidirectional I/O pin 1 |
| Chân 3 | I/O2 — Bidirectional I/O pin 2 |
| Chân 4 | I/O3 — Bidirectional I/O pin 3 |
| Chân 5 | I/O4 — Bidirectional I/O pin 4 |
| Chân 6 | I/O5 — Bidirectional I/O pin 5 |
| Chân 7 | I/O6 — Bidirectional I/O pin 6 |
| Chân 8 | I/O7 — Bidirectional I/O pin 7 |
| Chân 9 | IN0 — Dedicated input 0 |
| Chân 10 | IN1 — Dedicated input 1 |
| Chân 11 | IN2 — Dedicated input 2 |
| Chân 12 | GND — Ground |
| Chân 13 | IN3 — Dedicated input 3 |
| Chân 14 | IN4 — Dedicated input 4 |
| Chân 15 | IN5 — Dedicated input 5 |
| Chân 16 | IN6 — Dedicated input 6 |
| Chân 17 | I/O8 — Bidirectional I/O pin 8 |
| Chân 18 | I/O9 — Bidirectional I/O pin 9 |
| Chân 19 | I/O10 — Bidirectional I/O pin 10 |
| Chân 20 | I/O11 — Bidirectional I/O pin 11 |
| Chân 21 | I/O12 — Bidirectional I/O pin 12 |
| Chân 22 | I/O13 — Bidirectional I/O pin 13 |
| Chân 23 | I/O14 — Bidirectional I/O pin 14 |
| Chân 24 | I/O15 — Bidirectional I/O pin 15 |
| Chân 25 | NC — Not connected (per datasheet) |
| Chân 26 | NC — Not connected (per datasheet) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | VCC — +5 V supply |
Ứng dụng tiêu biểu
EPM5032JC25 phù hợp cho 6 Áp dụngs: Microprocessor Address Decoding and Chip-Select Generation, Bus Interface Glue Logic, State-Machine Controllers, DMA and Bus Arbitration, Peripheral Interface Adapters, Legacy Industrial Control Replacement.
Microprocessor Address Decoding and Chip-Select Generation
The EPM5032JC25 is well suited for generating decoded chip-select signals and memory maps in 8-bit and 16-bit microprocessor systems. Its 32 macrocells can each absorb a wide AND-OR Boolean expression, replacing 4-6 standard 22V10 PALs while delivering a deterministic 25 ns pin-to-pin delay that fits comfortably inside 8 MHz 8086/68k and even 16 MHz 80286 read/write cycles. With 320 product terms feeding a global PIA, designers can re-map an entire memory decoder in one device, reducing board area and improving noise immunity versus discrete 74LS logic.
Được đề xuất
Bus Interface Glue Logic
Standard microprocessor buses need glue logic for buffering, latching, and protocol conversion. The EPM5032JC25 packs up to 16 bidirectional I/O plus 7 dedicated inputs and 16 registered outputs, allowing the device to absorb an entire ISA or expansion-bus interface in one chip. The 25 ns tPD meets ISA bus AC timing with margin, and the 5 V TTL I/O eliminates level shifters when interfacing to standard peripherals. Designers migrating discrete 74FCT/74LS glue to a single EPLD gain reduced board real-estate, lower power, and easier re-spin via JEDEC fuse-map changes.
Được đề xuất
State-Machine Controllers
Finite state machines are a classic MAX 5000 use case, and the EPM5032JC25 supports up to 32 encoded or one-hot state bits distributed across its four logic array blocks. The 25 ns delay combined with 32 flip-flops per device enables multi-state controllers running at clock rates up to the 62.5 MHz internal toggle limit, suitable for protocol sequencers, arbitration logic, and motor-control state machines. The deterministic PIA delay allows worst-case state-transition timing to be calculated by inspection, simplifying safety analysis for industrial controllers.
Được đề xuất
DMA and Bus Arbitration
Multi-master systems require arbitration logic to grant the bus to the highest-priority requesting master while preventing conflicts. The EPM5032JC25's combination of dedicated inputs for request/grant signals, registered outputs for grant acknowledgment, and product-term-rich macrocells for priority encoding makes it a strong choice for centralized arbiter implementations. The 25 ns tPD keeps arbitration latency well below typical ISA or VMEbus grant windows, and the 32-macrocell capacity supports 4-8 request inputs with rotating or fixed priority.
Được đề xuất
Peripheral Interface Adapters
Legacy peripherals such as parallel-port controllers, GPIB transceivers, and SCSI glue benefit from consolidation into a single EPLD. The EPM5032JC25's 16 bidirectional I/O pins can emulate an 8-bit data port plus handshake, while dedicated inputs carry strobe and ready signals. Replacing 3-5 discrete 74LS buffers and latches with one MAX 5000 device reduces the BOM, improves AC noise margins through registered outputs, and lets designers re-customize peripheral timing by simply editing the JEDEC fuse map during development.
Được đề xuất
Legacy Industrial Control Replacement
Industrial control boards built in the late 1980s and 1990s are still in service, and many use the EPM5032JC25 for sequencing, watchdog, and I/O-expansion logic. When a board fails, the OEM must source an exact drop-in replacement, which the JC25 still provides from aftermarket distributors. The CMOS EPROM technology and 5 V TTL I/O match the surrounding TTL logic without re-engineering, and the 25 ns delay is adequate for sub-microsecond control loops typical of stepper-motor drivers and process-control front-ends.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM5032JC25 — 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 | EPM5032JC-20 | EPM5032JC | EPM5032DC-25 | EPM5032DM-25 | EPM5016DC-20 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera - same brand | Altera - same brand | Altera - same brand | Altera - same brand | Altera - same brand |
| Package | 28-pin PLCC (JC) | 28-pin PLCC (JC) - same | 28-pin PLCC (JC) - same | 24-pin CERDIP (DC) - different | 24-pin CERDIP (DM) - different | 24-pin CERDIP (DC) - different |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 16 |
| Propagation Delay (tPD) | 25 ns | 20 ns | Commercial (no -xx suffix, slower) | 25 ns | 25 ns | 20 ns |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Faster speed grade than -20 variant, same die (vsEPM5032JC-20)
- Same-die pin-compatible upgrade path (vsEPM5032JC)
- Higher density than 16-macrocell sibling (vsEPM5016DC-20)
Ghi chú thiết kế
The EPM5032JC25 operates from a single 5 V supply. Decouple VCC with a 0.1 uF ceramic capacitor placed within 5 mm of the PLCC pin-28 VCC lead, and bulk-decouple with a 10 uF tantalum or low-ESR electrolytic at the board's 5 V rail entry point. The CMOS EPROM array draws current primarily during programming and AC switching; during steady-state operation the Icc is in the low mA range, but transient demand during simultaneous output switching can exceed 50 mA. Add a ferrite bead on the 5 V feed to the socketed PLCC if multiple EPLDs switch simultaneously to reduce rail collapse.
The 28-pin PLCC socket should be a low-profile machine-pin or chipcarrier socket (e.g., 3M Textool or equivalent) with a retention clip to survive vibration and thermal cycling. Route all I/O signals on the inner PCB layers to keep the PLCC socket footprint free for decoupling. The 28-pin PLCC's 1.27 mm pitch demands 0.2 mm trace/space design rules minimum; allow at least 0.5 mm clearance between adjacent PLCC pads to avoid solder bridges during hand-rework of obsolete parts.
Do not attempt UV erasure on the EPM5032JC25 - the 'JC' suffix denotes a windowless plastic PLCC, making the part one-time-programmable (OTP). For prototypes that require multiple design iterations, use the ceramic-windowed 'DC' or 'DM' variants in a windowed CERDIP package and erase under a UV EPROM eraser for 20-30 minutes. Also avoid mixing -25 and -20 speed grades on the same bus without re-checking timing: the -20 is 5 ns faster and may introduce hold-time violations on synchronous paths designed for the -25 timing.
Place the EPM5032JC25 socket close to the bus connectors and decoded peripherals to minimize stub lengths on address and data lines. Keep all 5 V decoupling within 5 mm of the VCC/GND pins (PLCC pin 28 / pin 12). For designs with both a 28-pin PLCC EPM5032 and a second CPLD/FPGA, isolate their ground returns to a single 0 V star point to prevent ground bounce from the larger device coupling into the EPLD's analog-style PIA sense amps. Use a continuous ground plane on the layer beneath the socket footprint.
Although the 25 ns propagation delay is slow by modern standards, address and strobe edges can still produce ringing on unterminated bus traces longer than 50 mm. Source-terminate each bus driver with a 33-ohm resistor in series when driving the EPM5032JC25 inputs over 50 mm of trace, especially when the bus runs above 8 MHz. The EPLD's TTL-compatible input thresholds (VIL=0.8 V, VIH=2.0 V) tolerate moderate undershoot, but sustained ringing below 0 V can trigger input-latchup in older CMOS EPROM processes.
Thông tin tuân thủ
EPM5032JC25 is an obsolete Altera part; explicit RoHS/REACH compliance not stated in available sources. Compliance data would need to be retrieved from the original Altera datasheet family or via the Intel FPGA (current owner) product discontinuation records.
