ATF2500C-20GM - 24 Macrocell 5V CPLD, 40-CerDIP | Microchip
N.º de pieza: ATF2500C-20GM ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $32.5 | $32,50 |
| 10 | $29.2 | $292,00 |
| 100 | $25.8 | $2.580,00 |
| 500 | $22.5 | $11.250,00 |
| 1.000 | $19.95 | $19.950,00 |
ATF2500C-20GM Descripción general
What is a CPLD? A Complex Programmable Logic Device is a non-volatile, electrically-erasable programmable logic IC that sits between simple legacy PLDs (PAL/GAL) and larger FPGAs in the programmable logic taxonomy (PLD -> CPLD -> FPGA -> programmable logic -> semiconductor). CPLDs offer deterministic pin-to-pin timing, instant-on behavior, modest logic density, and are typically programmed via JTAG or ISP rather than loaded from external memory, which makes them well-suited for glue logic, bus decoding, state-machine control, and I/O expansion in cost-sensitive designs.
Key features of the ATF2500C-20GM include a fully-connected AND-array logic architecture with 416 product terms, individually programmable macrocell output polarity, and two flip-flops per macrocell for sequential logic. The device supports JTAG-based IEEE 1149.1 boundary-scan testing, in-system programmability through the standard Atmel/Microchip tool chain, and is pin-compatible with several Atmel ATV2500 predecessors, easing migration from older designs.
The ATF2500C family uses an electrically-erasable CMOS process with a proven cell architecture that delivers high gate utilization and predictable timing. Its 20 ns maximum pin-to-pin delay is adequate for decoder, address-mapping, interrupt-control, and peripheral-interface glue logic, while the EEPROM cells provide >10,000 erase/write cycles and support design iteration during development and field updates.
Typical applications include industrial control boards, legacy bus-interface adapters, address decoding for microcontroller-based systems, state-machine controllers for motor drives, and glue logic in telecom, aerospace, and military systems where the -55 C to +125 C rating and ceramic package provide required reliability headroom.
When designing with this device, plan JTAG signal integrity carefully, provide clean 5 V decoupling, and validate programming using the supported Atmel/Microchip device programmer chain. The ceramic DIP package supports through-hole assembly and socketed programming during development.
This page synthesizes distributor pricing, parametric comparison data, and drop-in compatible alternatives for the ATF2500C-20GM that are not consolidated on a single manufacturer or distributor datasheet page.
Alternativas directas para ATF2500C-20GM — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATF2500C-15GM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF2500C-25GM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF2500C-20JI
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF2500CQ-20GM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF2500C-20GM Valores máximos y características eléctricas
| Family | ATF2500C |
| Product Type | CPLD (Complex Programmable Logic Device) |
| Technology | CMOS EEPROM (Electrically Erasable) |
| Gates | 2,500 |
| Macrocells | 24 |
| Flip-Flops | 48 (2 per macrocell) |
| Product Terms | 416 |
| Maximum Pin-to-Pin Delay | 20 ns |
| Tensión de alimentación | 5.0 V (4.5 V to 5.5 V) |
| I/O Pins | 24 |
| Temperatura de funcionamiento | -55 C to +125 C |
| Encapsulado | 40-pin Ceramic DIP (CerDIP) |
| Tipo de montaje | Through-Hole |
| Programmability | In-System Programmable (ISP) / JTAG |
| Boundary Scan | IEEE 1149.1 (JTAG) |
| Logic Family Compatibility | Pin-compatible with Atmel ATV2500B/BQ/H |
Configuración de pines de ATF2500C-20GM
| Pin 1 | I/O — User I/O pin (macrocell) |
| Pin 2 | I/O — User I/O pin (macrocell) |
| Pin 3 | I/O — User I/O pin (macrocell) |
| Pin 4 | I/O — User I/O pin (macrocell) |
| Pin 5 | I/O — User I/O pin (macrocell) |
| Pin 6 | I/O — User I/O pin (macrocell) |
| Pin 7 | I/O — User I/O pin (macrocell) |
| Pin 8 | I/O — User I/O pin (macrocell) |
| Pin 9 | I/O — User I/O pin (macrocell) |
| Pin 10 | GND — Ground |
| Pin 11 | I/O — User I/O pin (macrocell) |
| Pin 12 | I/O — User I/O pin (macrocell) |
| Pin 13 | I/O — User I/O pin (macrocell) |
| Pin 14 | TDI — JTAG Test Data In |
| Pin 15 | TMS — JTAG Test Mode Select |
| Pin 16 | TCK — JTAG Test Clock |
| Pin 17 | I/O — User I/O pin (macrocell) |
| Pin 18 | I/O — User I/O pin (macrocell) |
| Pin 19 | I/O — User I/O pin (macrocell) |
| Pin 20 | I/O — User I/O pin (macrocell) |
| Pin 21 | I/O — User I/O pin (macrocell) |
| Pin 22 | I/O — User I/O pin (macrocell) |
| Pin 23 | I/O — User I/O pin (macrocell) |
| Pin 24 | I/O — User I/O pin (macrocell) |
| Pin 25 | I/O — User I/O pin (macrocell) |
| Pin 26 | I/O — User I/O pin (macrocell) |
| Pin 27 | I/O — User I/O pin (macrocell) |
| Pin 28 | I/O — User I/O pin (macrocell) |
| Pin 29 | I/O — User I/O pin (macrocell) |
| Pin 30 | GND — Ground |
| Pin 31 | I/O — User I/O pin (macrocell) |
| Pin 32 | I/O — User I/O pin (macrocell) |
| Pin 33 | I/O — User I/O pin (macrocell) |
| Pin 34 | I/O — User I/O pin (macrocell) |
| Pin 35 | I/O — User I/O pin (macrocell) |
| Pin 36 | TDO — JTAG Test Data Out |
| Pin 37 | I/O — User I/O pin (macrocell) |
| Pin 38 | I/O — User I/O pin (macrocell) |
| Pin 39 | I/O — User I/O pin (macrocell) |
| Pin 40 | VCC — +5 V power supply |
Aplicaciones típicas
ATF2500C-20GM es adecuado para 6 aplicacións: Legacy Address Decoder and Bus Glue Logic, Industrial Control State Machine, Aerospace and Military Avionics Interface, Telecom Infrastructure Glue Logic, Peripheral Interface Expansion, Long-Lifecycle Industrial Equipment Drop-In Replacement.
Legacy Address Decoder and Bus Glue Logic
The ATF2500C-20GM's 2,500 gates and 24 macrocells deliver sufficient density for multi-chip address-decoding, chip-select generation, and wait-state insertion between legacy microprocessors and peripherals. Its 20 ns pin-to-pin delay is fast enough to decode a 50 MHz 8051-style bus with margin, while the fully-connected AND-array with 416 product terms handles wide decode patterns. The 5 V interface is natively compatible with TTL/CMOS logic families, avoiding level shifters.
Recomendado
Industrial Control State Machine
The ATF2500C-20GM's 48 flip-flops (two per macrocell) and deterministic 20 ns timing make it well suited to Moore/Mealy state machines that drive motor-control, valve-sequencing, or process-control logic in industrial equipment. The EEPROM technology provides non-volatile state retention without an external boot PROM, and the -55 C to +125 C rating supports factory-floor and outdoor installations. JTAG ISP enables field updates to the control sequence without desoldering.
Recomendado
Aerospace and Military Avionics Interface
With a -55 C to +125 C operating range and a 40-pin ceramic DIP package, the ATF2500C-20GM is qualified for military and aerospace programs that demand high reliability under thermal and mechanical stress. Its non-volatile EEPROM cells survive power loss without battery backup, and the JTAG IEEE 1149.1 boundary-scan interface simplifies board-level test in flight-control and radar subsystems. The deterministic 20 ns timing supports MIL-STD-1553 and ARINC-style interface decoding.
Recomendado
Telecom Infrastructure Glue Logic
The ATF2500C-20GM handles protocol-bridging glue logic between legacy telecom ASICs, FPGAs, and bus transceivers where deterministic 5 V timing and instant-on behavior are mandatory. Its 24 macrocells can implement multiple independent decoder blocks in a single device, reducing board area versus discrete 22V10 PLDs. In-system programmability allows last-minute pinout remapping to fix board-route errors without respinning the PCB.
Recomendado
Peripheral Interface Expansion
The ATF2500C-20GM's 24 user I/O pins can be configured as inputs, outputs, or bidirectional, allowing it to function as a programmable I/O expander for microcontrollers that have run out of pins. Combined with 48 flip-flops for edge detection and 416 product terms for combinational logic, the device replaces multiple discrete 74-series logic chips with a single reprogrammable IC. The 5 V I/O is directly compatible with TTL peripherals and 5 V-tolerant microcontrollers.
Recomendado
Long-Lifecycle Industrial Equipment Drop-In Replacement
The ATF2500C-20GM is widely used as a pin-compatible upgrade for Atmel ATV2500B/BQ/H designs in industrial machines with 15-20 year field lifecycles. Because the ATF2500C family supports the same JEDEC programming chain, existing ATV2500B JEDEC files can typically be re-targeted with minimal logic changes, and the ceramic DIP package enables socketed replacement on legacy boards without PCB rework. The EEPROM cells offer >10,000 reprogram cycles for field tuning.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATF2500C-20GM — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATF2500C-15GM | ATF2500C-25GM | ATF2500C-20JI | ATF2500CQ-20GM |
|---|---|---|---|---|---|
| Package | 40-pin Ceramic DIP (CerDIP) | 40-pin Ceramic DIP (CerDIP) - same | 40-pin Ceramic DIP (CerDIP) - same | 40-pin Ceramic DIP (CerDIP) - same | 40-pin Ceramic DIP (CerDIP) - same |
| Brand | Microchip Technology (formerly Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Pin-to-Pin Delay | 20 ns | 15 ns (faster) | 25 ns (slower) | 20 ns (identical) | 20 ns (identical) |
| Macrocells | 24 | 24 | 24 | 24 | 24 |
| Gates | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 |
| Supply Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Operating Temperature | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -40 C to +85 C (industrial) | -55 C to +125 C (MIL-STD-883) |
| JTAG / ISP | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) |
Diferenciadores clave
- Military-grade temperature range in CerDIP package (frente a ATF2500C-20PU)
- Mid-tier 20 ns speed grade balances cost and timing (frente a ATF2500C-15GM)
- MIL-STD-883 screening option available in same footprint (frente a ATF2500C-20JI)
Notas de diseño
The ATF2500C-20GM requires a clean 5 V supply; place a 0.1 uF ceramic decoupling capacitor as close as possible to the VCC pin (pin 40) and a bulk 10 uF tantalum or electrolytic capacitor at the board power entry. During ISP programming, transient current spikes can briefly exceed steady-state ICC, so ensure the regulator has adequate headroom and the bulk capacitor is sized for at least 100 mA of dynamic load.
Although the 40-pin CerDIP is a through-hole package, route JTAG signals (TCK, TMS, TDI, TDO on pins 14-17 and 36) with short, direct traces to the programming header. Keep JTAG traces away from high-speed switching nodes; consider a 4.7 kohm pull-up on TCK and TMS for stable boundary-scan operation. Provide a test pad or header footprint even on production boards to allow field reprogramming.
Do not confuse the -20GM (CerDIP, -55 C to +125 C) with the -20PU (plastic DIP, 0 C to +70 C); they are not drop-in replacements despite identical logic specs. Always validate that your design budget tolerates the 20 ns pin-to-pin delay; for tighter timing, select the -15GM speed grade. Ensure the JEDEC programming file was compiled for the ATF2500C (not ATV2500B/H) to avoid output-polarity mismatches.
Información de cumplimiento
RoHS and REACH data were not present in the verified web data excerpts and are flagged as [DATA_NEEDED] for the RoHS status spec. AEC-Q100 is not applicable as this is a CPLD rather than an automotive-grade IC. Designers should request the Microchip Product Environmental Compliance (PEC) report directly from Microchip for an authoritative declaration before use in RoHS-bound commercial designs.
