EPM3064ATC44-7N - MAX 3000A CPLD, 64 Macro, 34 I/O, 7.5ns | Altera
MPN: EPM3064ATC44-7N β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.61 | $3.61 |
| 10 | $3.25 | $32.50 |
| 100 | $2.85 | $285.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.3 | $2,300.00 |
EPM3064ATC44-7N Overview
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell arrays with a programmable interconnect matrix, sitting in the programmable logic hierarchy between simple SPLDs and larger FPGAs. CPLDs typically offer deterministic, near-zero standby power, instant-on operation from EEPROM configuration, and are widely used for glue logic, bus interfacing, state-machine control, and I/O expansion where predictable timing matters more than raw logic density.
Key features of the EPM3064ATC44-7N include 3.3 V in-system programmability (ISP) through a built-in IEEE Std. 1149.1 JTAG interface with advanced pin-locking, ISP circuitry compliant with IEEE Std. 1532 for concurrent multi-vendor programming, multiVolt I/O supporting 1.8 V/2.5 V/3.3 V interfacing, and built-in boundary-scan test (BST) circuitry. The -7 speed grade specifies a 7.5 ns pin-to-pin delay, while the -10 grade operates at 10 ns for cost-sensitive designs.
Architecturally, the device uses Altera's classic MAX architecture with each Logic Array Block containing 16 macrocells fed by a programmable AND array and a product-term allocator that routes terms to OR gates. EEPROM configuration cells provide non-volatile storage, so the device powers up instantly with no external boot PROM. The multiVolt core allows mixed-voltage interfacing without external level shifters, easing integration into modern low-voltage ASIC/FPGA designs.
Typical applications include bus interface bridging (e.g., address decoding between processors and peripherals), power-up sequencing logic, configuration controllers for FPGAs and microcontrollers, peripheral I/O expansion, and glue-logic replacement for discrete 74-series TTL in industrial control, communications, and consumer systems. The 44-pin TQFP footprint matches the entire EPM3064AT family, allowing drop-in migration between speed grades.
When designing with this part, ensure VCCIO is supplied on the correct pin (pin 13 on the 44-pin TQFP) and JTAG signals TDI/TDO/TMS/TCK are brought out for ISP. Decouple each VCC/VCCIO pin with a 0.1 Β΅F ceramic capacitor placed within 5 mm of the pin, and use the Quartus II or MAX+PLUS II toolchain for design entry and programming file generation.
This page synthesizes distributor pricing, drop-in alternatives within the MAX 3000A family, and practical design notes not found in the standalone datasheet.
Drop-in alternatives for EPM3064ATC44-7N β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with EPM3064ATC44-7N (same form factor and footprint) β differing in Package, RoHS Status, Operating Temperature, Usable Gates, Maximum Counter Frequency.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
EPM3064ATC44-7
β Drop-Inβ In Stock
$4.2 / Unit
View Datasheet βEPM3064ATC44-4N
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$3.45 / Unit
View Datasheet βEPM3064ATC44-10N
β Drop-Inβ In Stock
$5.1 / Unit
View Datasheet βEPM3064ATC44-10
β Drop-Inβ In Stock
$4.35 / Unit
View Datasheet βEPM3064ATC44-10NAF
β Drop-Inβ In Stock
$5.05 / Unit
View Datasheet βEPM3064ALC44-7N
β Drop-Inβ In Stock
$3.95 / Unit
View Datasheet βEPM3064ATC44-7N Maximum Ratings & Electrical Characteristics
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macro Cells | 64 |
| Logic Array Blocks | 2 |
| Usable Gates | 1,250 |
| User I/O Pins | 34 |
| Number of Pins | 44 |
| Speed Grade | -7 (7.5 ns pin-to-pin delay) |
| Pin-to-Pin Delay (tPD) | 7.5 ns |
| Maximum Counter Frequency | 192.3 MHz (-7 grade) |
| Supply Voltage (VCC) | 3.3 V |
| MultiVolt I/O | 1.8 V / 2.5 V / 3.3 V |
| Programmability | EEPROM, in-system programmable (ISP) |
| JTAG Interface | IEEE Std. 1149.1 compliant |
| ISP Standard | IEEE Std. 1532 compliant |
| Boundary-Scan Test (BST) | Built-in, JTAG-driven |
| Package | 44-pin TQFP |
| Operating Temperature | 0Β°C to +85Β°C (commercial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
EPM3064ATC44-7N Pin Configuration
| Pin 1 | I/O β User I/O pin (macrocell I/O) |
| Pin 2 | I/O β User I/O pin (macrocell I/O) |
| Pin 3 | I/O β User I/O pin (macrocell I/O) |
| Pin 4 | I/O β User I/O pin (macrocell I/O) |
| Pin 5 | I/O β User I/O pin (macrocell I/O) |
| Pin 6 | I/O β User I/O pin (macrocell I/O) |
| Pin 7 | I/O β User I/O pin (macrocell I/O) |
| Pin 8 | I/O β User I/O pin (macrocell I/O) |
| Pin 9 | I/O β User I/O pin (macrocell I/O) |
| Pin 10 | GND β Ground |
| Pin 11 | I/O β User I/O pin (macrocell I/O) |
| Pin 12 | I/O β User I/O pin (macrocell I/O) |
| Pin 13 | VCCIO β I/O supply voltage (multiVolt 1.8/2.5/3.3 V) |
| Pin 14 | I/O β User I/O pin (macrocell I/O) |
| Pin 15 | I/O β User I/O pin (macrocell I/O) |
| Pin 16 | I/O β User I/O pin (macrocell I/O) |
| Pin 17 | I/O β User I/O pin (macrocell I/O) |
| Pin 18 | I/O β User I/O pin (macrocell I/O) |
| Pin 19 | I/O β User I/O pin (macrocell I/O) |
| Pin 20 | I/O β User I/O pin (macrocell I/O) |
| Pin 21 | GND β Ground |
| Pin 22 | I/O β User I/O pin (macrocell I/O) |
| Pin 23 | I/O β User I/O pin (macrocell I/O) |
| Pin 24 | I/O β User I/O pin (macrocell I/O) |
| Pin 25 | I/O β User I/O pin (macrocell I/O) |
| Pin 26 | I/O β User I/O pin (macrocell I/O) |
| Pin 27 | I/O β User I/O pin (macrocell I/O) |
| Pin 28 | I/O β User I/O pin (macrocell I/O) |
| Pin 29 | I/O β User I/O pin (macrocell I/O) |
| Pin 30 | TDI β JTAG Test Data In |
| Pin 31 | TMS β JTAG Test Mode Select |
| Pin 32 | TCK β JTAG Test Clock |
| Pin 33 | I/O β User I/O pin (macrocell I/O) |
| Pin 34 | I/O β User I/O pin (macrocell I/O) |
| Pin 35 | VCC β Core supply voltage (3.3 V) |
| Pin 36 | I/O β User I/O pin (macrocell I/O) |
| Pin 37 | I/O β User I/O pin (macrocell I/O) |
| Pin 38 | I/O β User I/O pin (macrocell I/O) |
| Pin 39 | I/O β User I/O pin (macrocell I/O) |
| Pin 40 | GND β Ground |
| Pin 41 | I/O β User I/O pin (macrocell I/O) |
| Pin 42 | I/O β User I/O pin (macrocell I/O) |
| Pin 43 | I/O β User I/O pin (macrocell I/O) |
| Pin 44 | TDO β JTAG Test Data Out |
Typical Applications
EPM3064ATC44-7N is suitable for 6 applications: Bus Interface & Address Decoding, Power-Up Sequencing & Reset Control, FPGA Configuration Controller, Industrial Control & State Machines, Glue Logic Replacement (74-series), Communications & Peripheral I/O Expansion.
Bus Interface & Address Decoding
The EPM3064ATC44-7N excels at bus interface bridging and address decoding between microprocessors, memory, and peripherals. With 64 macro cells it can decode multi-bank chip-select signals across 24-bit address spaces, generate wait-state timing, and translate between 8/16/32-bit bus protocols. Its 7.5 ns pin-to-pin delay is fast enough for ISA-style buses and modern SPI/I2C peripheral expansion, while the 3.3 V core with multiVolt I/O (1.8 V/2.5 V/3.3 V) lets it interface directly with legacy 5 V-tolerant logic via external resistors. Unlike an FPGA, the EEPROM-backed CPLD powers up instantly with valid outputs, eliminating boot-ROM sequencing in deterministic control paths.
Recommended
Power-Up Sequencing & Reset Control
The EPM3064ATC44-7N is well-suited to multi-rail power-up sequencing in FPGA, ASIC, and SoC designs that require deterministic rail order. Its 64 macro cells can implement cascaded timers, voltage-good monitors feeding the JTAG-controlled I/O pins, and programmable watchdog logic. Because configuration is stored in EEPROM, sequencing starts within microseconds of VCC ramp, far faster than microcontroller-based sequencers that require firmware boot. The 7.5 ns tPD enables glitch-free propagation of fault signals, and the 3.3 V core operates from the same rail that often supplies the supervisor itself, simplifying BOM cost.
Recommended
FPGA Configuration Controller
The EPM3064ATC44-7N serves as a low-cost configuration controller for larger FPGAs (Cyclone, Stratix, Spartan families) in industrial and embedded systems. With 64 macro cells it can generate the configuration clock, control PROGRAM_B/INIT_B/DONE handshakes, and select between multiple bitstreams stored in parallel flash. The IEEE 1149.1 JTAG ISP interface allows in-field reconfiguration without external programmers, while the multiVolt I/O bridges between 3.3 V CPLD rails and 1.8 V/2.5 V FPGA configuration banks. Compared with discrete 74-series sequencers, the integrated solution reduces board area and improves timing margin in mission-critical boot paths.
Recommended
Industrial Control & State Machines
The EPM3064ATC44-7N is widely deployed in industrial controllers where deterministic, fail-safe state machines drive relays, motor starters, and process valves. Its 192.3 MHz maximum counter frequency supports high-resolution PWM and quadrature decoding, while the 34 user I/Os can directly interface with 24 V industrial sensors via optocouplers on each pin. The EEPROM non-volatile configuration ensures the controller resumes its last state through power cycles without external watchdog or supervisor ICs. Compared to microcontroller-based implementations, the CPLD's parallel logic execution avoids interrupt-latency jitter in hard-real-time control loops.
Recommended
Glue Logic Replacement (74-series)
The EPM3064ATC44-7N replaces multiple discrete 74LS/74HC/74FTTL packages (decoders, multiplexers, flip-flops, latches) with a single programmable device, saving PCB area and reducing BOM cost in mature designs. With 64 macro cells it can absorb 10-20 equivalent TTL packages, integrating functions that would otherwise span multiple footprints. The 44-pin TQFP occupies the same board area as four 16-pin SOICs, and the in-system programmability via JTAG allows last-minute logic changes without board respins. This application is a classic MAX 3000A use case where Altera's MAX+PLUS II / Quartus II toolchains accept TTL schematics directly.
Recommended
Communications & Peripheral I/O Expansion
The EPM3064ATC44-7N expands I/O and protocol-conversion capability in communications equipment such as routers, base stations, and serial-backplane aggregators. Its multiVolt I/O supports mixed 1.8 V/2.5 V/3.3 V domains commonly found in PHYs, while the 7.5 ns tPD suits LVDS-style point-to-point links at modest baud rates. The CPLD can implement UART/SPI/I2C bridges, parallel-to-serial converters, and protocol-format adapters without consuming the main CPU's interrupt bandwidth. The 34 user I/Os and 64 macro cells are enough to manage multiple low-speed serial channels alongside an Ethernet or PCIe control plane.
Recommended
Recommended Products Summary
Engineering reference data for EPM3064ATC44-7N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3064ATC44-7 | EPM3064ATC44-4N | EPM3064ATC44-10N | EPM3064ATC44-10 | EPM3064ATC44-10NAF | EPM3064ALC44-7N |
|---|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 44-pin TQFP | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Macro Cells | 64 | 64 | 64 | 64 | 64 | 64 | 64 |
| User I/Os | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
| Pin-to-Pin Delay (tPD) | 7.5 ns | 7.5 ns | 4.5 ns | 10 ns | 10 ns | 10 ns | 7.5 ns |
| Counter Frequency (fCNT) | 192.3 MHz | 192.3 MHz | 227.3 MHz | 125 MHz | 125 MHz | 125 MHz | 192.3 MHz |
| Operating Temperature | 0Β°C to +85Β°C | 0Β°C to +85Β°C | 0Β°C to +85Β°C | 0Β°C to +85Β°C | 0Β°C to +85Β°C | 0Β°C to +85Β°C | -40Β°C to +85Β°C |
| Supply Voltage | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) | 3.3 V (multiVolt I/O) |
Key Differentiators
- Balanced speed/cost grade in the MAX 3000A 64-macrocell family (vs EPM3064ATC44-4N)
- Faster and higher-frequency-capable than the smaller EPM3032ATC44-7N (vs EPM3032ATC44-7N)
- Wider speed envelope than the EPM3064ATC44-10N with same die (vs EPM3064ATC44-10N)
Design Notes
The EPM3064ATC44-7N requires two separate supplies: VCC at 3.3 V for the core (pin 35) and VCCIO at 1.8 V, 2.5 V, or 3.3 V for the I/O bank (pin 13). Place a 0.1 Β΅F decoupling capacitor within 5 mm of each supply pin, plus a 10 Β΅F bulk capacitor near the package. During in-system programming, VCC must ramp monotonically from 0 V to 3.3 V within the datasheet's tRAMP specification, or ISP will fail. If VCCIO is held at 0 V while VCC is active, the I/O pins enter a high-impedance state but the core continues operating.
Place a 4-layer PCB stack-up with a dedicated ground plane immediately below the TQFP to minimize switching noise coupling into JTAG and clock pins. The 44-pin TQFP has a 0.8 mm pitch and a thermal pad-style lead frame, so use 0.15 mm trace/space design rules and route all JTAG signals (TDI/TDO/TMS/TCK on pins 30/44/31/32) on the top layer with short, parallel traces. Series-terminate clock outputs driving long traces (>50 mm) with 33 Ξ© resistors to control ringing. Do not route switching signals under the device footprint to avoid coupling into the EEPROM charge pumps.
Three pitfalls frequently trip up first-time users of the MAX 3000A family. First, the JTAG chain must include a 1 kΞ© pull-up on TCK and TMS, and a 1 kΞ© pull-up on TDI, per the IEEE 1149.1 specification, or ISP programming will fail intermittently. Second, the device IDCODE is 0x026040DD for the EPM3064A family; if your JTAG chain reports a different ID, re-check the BSDL file. Third, the global clear (GCLK1/GCLRn) pin must be tied high or driven high within 100 Β΅s of VCC stable or all registers will reset to an undefined state. According to Altera application notes, the legacy MAX+PLUS II toolchain is required for MAX 3000A; Quartus Prime does not directly support this family.
Compliance Information
RoHS compliant per Altera/Intel product page and distributor listings. Halogen-free status not explicitly stated in the MAX 3000A datasheet; treated as unknown. AEC-Q100 not applicable - this is a commercial-grade part (0Β°C to +85Β°C). For industrial temperature, choose EPM3064ALC44-7N.