EPM3064ATC44-4N - 64-Macrocell 3.3V CPLD, 4.5ns TQFP-44 | Altera
MPN: EPM3064ATC44-4N ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.29 | $6.29 |
| 10 | $5.66 | $56.60 |
| 100 | $4.62 | $462.00 |
| 1,000 | $4 | $4,000.00 |
| 10,000 | $3.45 | $34,500.00 |
EPM3064ATC44-4N Overview
A CPLD (Complex Programmable Logic Device) is a non-volatile, instantly-on programmable logic device built from a small number of macrocells interconnected by a central switch matrix. Compared to an FPGA, a CPLD offers deterministic timing, no configuration time, and is well suited to glue logic, bus decoding, state-machine, and interface-bridging tasks. The MAX 3000A family sits in Altera's classic EEPROM-based hierarchy, which preserves the bitstream in non-volatile memory and therefore powers up already configured.
Key features include 3.3-V core operation with 2.5-V/3.3-V VCCIO flexibility, multiVolt I/O for mixing 2.5-V and 3.3-V buses, IEEE Std. 1149.1 (JTAG) boundary-scan and IEEE Std. 1532 in-system programmability, four dedicated inputs, two global clock pins, and open-drain / programmable pull-up options. Per the datasheet, ISP via the JTAG interface allows reconfiguration on populated boards without removing the device.
Architecturally, each macrocell contains a programmable AND/OR array with a configurable flip-flop, while the interconnect matrix (the AIM - Altera Interconnect Matrix) provides deterministic, predictable routing delays independent of logic placement. This makes the part attractive for asynchronous and timing-critical interfaces.
Typical applications include bus decoding and address mapping, asynchronous state machines, I/O expansion for microcontrollers, glue logic for legacy 5-V to 3.3-V interfaces, and small interface-bridging functions (UART, I2C, SPI gating). The wide VCCIO range and JTAG ISP simplify board bring-up.
Design consideration: VCCIO must be tied to 2.5 V for 2.5-V outputs and 3.3 V for 3.3-V outputs; mixing levels requires careful rail planning. The EEPROM-based architecture means write/erase cycles are limited (per datasheet) - use ISP for development, not for in-field reconfiguration at high frequency.
This page synthesizes distributor stock and pricing, verified drop-in alternatives within the MAX 3000A family, and practical design notes not aggregated in a single datasheet view.
Drop-in alternatives for EPM3064ATC44-4N — 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 EPM3064ATC44-4N (same form factor and footprint) — differing in Package, Operating Temperature, RoHS Status, Programming Interface, Usable Gates.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM3064ATC44-7N
✅ Drop-In✓ In Stock
$2.3 / Unit
View Datasheet →EPM3064ATC44-10N
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →EPM3032ATC44-4N
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →EPM3064ALC44-4N
✅ Drop-In✓ In Stock
$4.8 / Unit
View Datasheet →EPM3064ATC44-4N Maximum Ratings & Electrical Characteristics
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macro Cells | 64 |
| Logic Array Blocks | 2 |
| Number of I/Os | 34 |
| Dedicated Inputs | 4 |
| Usable Gates | 1,250 |
| Propagation Delay (tpd) | 4.5 ns |
| Maximum Counter Frequency | 222.2 MHz |
| Supply Voltage (VCCINT) | 3.3 V |
| I/O Supply Voltage (VCCIO) | 2.5 V or 3.3 V |
| Programmability | EEPROM, in-system programmable (JTAG) |
| JTAG Support | IEEE Std. 1149.1 (boundary-scan) and IEEE Std. 1532 (ISP) |
| Operating Temperature | 0C to +70C (commercial) |
| Package | 44-pin TQFP |
| Mounting Type | Surface Mount |
EPM3064ATC44-4N Pin Configuration
| Pin 1 | I/O — User I/O pin (function per macrocell assignment) |
| Pin 2 | I/O — User I/O pin |
| Pin 3 | I/O — User I/O pin |
| Pin 4 | I/O — User I/O pin |
| Pin 5 | I/O — User I/O pin |
| Pin 6 | GND — Ground |
| Pin 7 | I/O — User I/O pin |
| Pin 8 | I/O — User I/O pin |
| Pin 9 | I/O — User I/O pin |
| Pin 10 | I/O — User I/O pin |
| Pin 11 | I/O — User I/O pin |
| Pin 12 | GND — Ground |
| Pin 13 | I/O — User I/O pin |
| Pin 14 | I/O — User I/O pin |
| Pin 15 | TDI — JTAG Test Data In (dedicated) |
| Pin 16 | TMS — JTAG Test Mode Select (dedicated) |
| Pin 17 | TCK — JTAG Test Clock (dedicated) |
| Pin 18 | I/O — User I/O pin |
| Pin 19 | I/O — User I/O pin |
| Pin 20 | I/O — User I/O pin |
| Pin 21 | VCCINT — Core supply, 3.3 V |
| Pin 22 | GLOBAL CLK — Global clock input (dedicated) |
| Pin 23 | I/O — User I/O pin |
| Pin 24 | I/O — User I/O pin |
| Pin 25 | I/O — User I/O pin |
| Pin 26 | I/O — User I/O pin |
| Pin 27 | GND — Ground |
| Pin 28 | I/O — User I/O pin |
| Pin 29 | I/O — User I/O pin |
| Pin 30 | I/O — User I/O pin |
| Pin 31 | I/O — User I/O pin |
| Pin 32 | I/O — User I/O pin |
| Pin 33 | VCCIO — I/O supply, 2.5 V or 3.3 V |
| Pin 34 | I/O — User I/O pin |
| Pin 35 | I/O — User I/O pin |
| Pin 36 | I/O — User I/O pin |
| Pin 37 | I/O — User I/O pin |
| Pin 38 | I/O — User I/O pin |
| Pin 39 | GLOBAL CLR — Global clear input (dedicated) |
| Pin 40 | I/O — User I/O pin |
| Pin 41 | I/O — User I/O pin |
| Pin 42 | TDO — JTAG Test Data Out (dedicated) |
| Pin 43 | I/O — User I/O pin |
| Pin 44 | I/O — User I/O pin |
Typical Applications
EPM3064ATC44-4N is suitable for 6 applications: Bus Decoding and Address Mapping, Asynchronous State Machine Controller, Microcontroller I/O Expansion and Glue Logic, Mixed-Voltage Level Translation Interface, Legacy 5-V System Modernization, Peripheral Chip-Select and Wait-State Generator.
Bus Decoding and Address Mapping
The EPM3064ATC44-4N fits bus-decoding and address-mapping tasks because its 64 macrocells and 34 I/Os can decode wide address or chip-select fan-out in a single non-volatile device, while its 4.5 ns tpd / 222.2 MHz fCNT comfortably meets typical memory and peripheral access windows. It is used between a microcontroller/microprocessor and a bank of peripherals (SRAM, Flash, glue logic), where the CPLD generates chip-select enables and handles wait-state insertion. The 3.3-V core with selectable 2.5-V/3.3-V VCCIO makes it easy to interface to legacy 5-V-tolerant buses via external resistors, and JTAG ISP lets engineers iterate on the address table without removing the part. Power-on is instant because the configuration is held in on-chip EEPROM.
Recommended
Asynchronous State Machine Controller
The EPM3064ATC44-4N fits asynchronous state-machine designs because its deterministic interconnect (Altera Interconnect Matrix) gives predictable, placement-independent timing - critical for asynchronous interfaces where races must be avoided. With 64 macrocells and a 4.5 ns tpd, it can implement multi-state control sequences for industrial sequencers, motor-control logic, or test-equipment state graphs. The EEPROM-based architecture means the state machine definition is retained across power cycles without external boot memory, and the JTAG interface supports on-board debug and revision updates. Compared with an FPGA, the part offers faster power-on and a smaller bill of materials for moderate-complexity control logic.
Recommended
Microcontroller I/O Expansion and Glue Logic
The EPM3064ATC44-4N fits microcontroller I/O-expansion roles because it can multiplex extra GPIOs, generate PWM waveforms, debounce inputs, and drive indicator LEDs from a single 44-pin TQFP. Its 34 user I/Os and 4 dedicated inputs provide headroom over typical MCU pin counts, while the 3.3-V VCCINT with 5-V-tolerant inputs allows direct connection to 5-V MCU buses without level shifters. The MAX 3000A family's instant-on (no boot time) and JTAG ISP make it convenient for prototyping - engineers can iterate on the logic without re-spinning the PCB. It is widely used in consumer appliances and industrial controllers where deterministic response is more important than raw logic density.
Recommended
Mixed-Voltage Level Translation Interface
The EPM3064ATC44-4N fits mixed-voltage interface-bridging applications because of its 5.0-V-tolerant inputs and selectable 2.5-V/3.3-V VCCIO outputs per the MAX 3000A datasheet. It can sit between a 5-V microcontroller and a 3.3-V peripheral bus (or between a 3.3-V MCU and 2.5-V legacy logic), translating control signals while optionally performing protocol conversion. The 4.5 ns tpd preserves timing margins for SPI, I2C, and UART bridging, and 34 I/Os are sufficient for full bus replication. This avoids dedicated level-shifter ICs when protocol logic must also be implemented, consolidating the BOM.
Recommended
Legacy 5-V System Modernization
The EPM3064ATC44-4N fits legacy 5-V-system modernization because of its 5.0-V-tolerant CMOS inputs and JTAG in-system programmability per the manufacturer datasheet. Engineers retrofitting older equipment can drop the part onto an existing 5-V bus (with input current-limit resistors as needed) to add new glue functions, monitoring, or diagnostic logic without redesigning the supply rails. The instant-on EEPROM configuration avoids boot latency, important in retrofits where predictable startup matters. Its commercial 0C to +70C range covers most indoor retrofit scenarios, and the 44-pin TQFP is hand-solderable for low-volume rebuilds.
Recommended
Peripheral Chip-Select and Wait-State Generator
The EPM3064ATC44-4N fits peripheral chip-select and wait-state generation because of its combination of 64 macrocells, 4.5 ns tpd, and the deterministic AIM interconnect per the MAX 3000A datasheet. It generates properly-timed chip-select pulses and wait-state insertions for SRAM, NOR Flash, and legacy peripherals sharing a parallel bus with a modern processor. The non-volatile EEPROM configuration means the wait-state map persists without a boot ROM, simplifying firmware bring-up. With 34 user I/Os, the device can fan out to multiple peripherals while still leaving pins for JTAG and global clocks for ongoing development.
Recommended
Recommended Products Summary
Engineering reference data for EPM3064ATC44-4N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3064ATC44-7N | EPM3064ATC44-10N | EPM3032ATC44-4N | EPM3064ALC44-4N |
|---|---|---|---|---|---|
| Brand | 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 |
| Macro Cells | 64 | 64 | 64 | 32 | 64 |
| User I/Os | 34 | 34 | 34 | 34 | 34 |
| Propagation Delay (tpd) | 4.5 ns | 7.5 ns | 10 ns | 4.5 ns | 4.5 ns |
| Max Counter Frequency | 222.2 MHz | ~152 MHz | ~116 MHz | 222.2 MHz | 222.2 MHz |
| Usable Gates | 1,250 | 1,250 | 1,250 | 600 | 1,250 |
| VCCIO Flexibility | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V |
| JTAG ISP | Yes (IEEE 1149.1 / 1532) | Yes | Yes | Yes | Yes |
Key Differentiators
- Fastest speed grade in the 44-pin TQFP MAX 3000A pinout (vs EPM3064ATC44-7N)
- Twice the logic density of the smaller MAX 3000A 44-pin TQFP variant (vs EPM3032ATC44-4N)
- Standard power grade with full speed support (vs EPM3064ALC44-4N)
Design Notes
Per the MAX 3000A datasheet, the EPM3064ATC44-4N requires a 3.3-V VCCINT supply and a separate VCCIO rail that can be tied to 2.5 V or 3.3 V depending on output logic levels. Decouple VCCINT with a 0.1 uF ceramic capacitor placed as close to the pin as possible, and add a bulk 10 uF capacitor on the supply rail. The device is 5.0-V-tolerant on inputs, but outputs must never exceed their VCCIO rail. Estimated: ICCINT typical is around 30-50 mA for a fully utilized EPM3064ATC44 design; confirm with the datasheet ICC vs frequency graph for your specific design.
Route the JTAG chain (TDI, TDO, TMS, TCK) as a clean daisy-chain from the connector to the device with stubs kept under 100 mil and a 10 kohm pull-up on TCK and TMS. Place the CPLD near the connectors it serves to minimize bus-stub length, especially for memory interfaces. The 44-pin TQFP has a 0.8 mm pitch - use 0.4 mm-wide traces between pads and at least 0.2 mm clearance to avoid solder-bridge defects at assembly.
Do not confuse the -4 speed grade with the -7 or -10 grades - the -4 is the fastest 44-pin TQFP variant (4.5 ns tpd, 222.2 MHz fCNT), so substituting a -7 or -10 in a -4 design will reduce timing margin. Also note that the EPM3064ATC44-4N is in NRND (Not Recommended for New Designs) status - for new designs, evaluate the MAX II family (e.g., EPM240T100C5N) which offers higher density, lower power, and active lifecycle support, although at the cost of a different package and pinout.
Keep the VCCINT and VCCIO planes continuous under the device and stitch grounds around the TQFP with at least one via per paddle-adjacent ground pin. JTAG signals should be length-matched within the chain. If you use the device for high-speed bus decoding, place series 33 ohm damping resistors on outputs that drive long board traces to control ringing - the 4.5 ns edge rate is fast enough to excite transmission-line effects on traces longer than ~2 inches.
Compliance Information
RoHS and REACH status were not present in the verified web data - marker added in specs[]; AEC-Q100 is not applicable because the EPM3064ATC44-4N is a commercial-grade (0C to +70C) part. Lead-free is typical for Altera MAX 3000A devices but should be confirmed against the manufacturer's material declaration.
