EPM3032ATC44-4 - MAX 3000A CPLD, 32 Macrocells, 44-TQFP | Intel
MPN: EPM3032ATC44-4 ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.11 | $3.11 |
| 10 | $2.84 | $28.40 |
| 100 | $2.42 | $242.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.74 | $1,740.00 |
EPM3032ATC44-4 Overview
What is a CPLD? A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic device that combines multiple PAL-like macrocell arrays interconnected by a programmable switch matrix. CPLDs sit in the programmable logic hierarchy between simple SPLDs (e.g., classic 22V10 PALs) and FPGAs, offering deterministic timing, instant-on behavior, and 3.3 V in-system programmability via the IEEE 1149.1 JTAG interface. The MAX 3000A family is part of the broader programmable logic category, which falls under the semiconductor device taxonomy.
Key features of the EPM3032ATC44-4 include 3.3 V in-system programmability (ISP) through the built-in JTAG interface, MultiVolt I/O supporting 1.8 V, 2.5 V, and 3.3 V mixed-voltage interfacing, 32 macrocells with 100% interconnect, and an open-drain output option per I/O pin for wired-OR control signals. The device supports 1000 erase/program cycles and retains logic for a minimum of 20 years.
Architecturally, the EPM3032ATC44-4 uses a non-volatile EEPROM cell to store configuration, enabling instant-on operation without external boot memory. The deterministic interconnect fabric yields predictable, data-sheet-specified propagation delays independent of logic utilization - a key advantage over SRAM-based FPGAs for timing-critical control paths.
Typical applications include I/O expansion for microcontrollers and microprocessors, address decoding and bus interface logic, state-machine and glue-logic replacement for legacy 74-series TTL, power-supply sequencing, and industrial control boards requiring deterministic timing.
When designing with this device, ensure that the JTAG chain (TDI, TDO, TMS, TCK) is properly terminated and that the 3.3 V core supply rail has decoupling capacitors placed within 5 mm of the VCC pins.
This page synthesizes distributor pricing, JTAG-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for EPM3032ATC44-4 — 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 EPM3032ATC44-4 (same form factor and footprint) — differing in Programming Interface, Configuration Memory, RoHS Status, Package, Process Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM3032ATC44-4N
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →EPM3032ATC44-7N
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →EPM3032ATC44-10N
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →EPM3032ATC44-10NAB
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →EPM3032ALI44-10N
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →LC4032V-44TN44
✅ Drop-In📋 Reference alternative (not in catalog)
EPM3032ATC44-4 Maximum Ratings & Electrical Characteristics
| Family | MAX 3000A |
| Macrocells | 32 |
| Logic Array Blocks (LABs) | 2 |
| User I/O Pins | 34 |
| Speed Grade | -4 (tPD = 4.5 ns) |
| Supply Voltage (Core) | 3.3 V |
| MultiVolt I/O Support | 1.8 V / 2.5 V / 3.3 V |
| In-System Programmability | IEEE 1149.1 (JTAG) |
| Package | 44-pin TQFP |
| Technology | CMOS EEPROM |
| Configuration Memory | Non-volatile EEPROM |
| Erase/Program Cycles | 1000 |
| Data Retention | 20 years (minimum) |
| Open-Drain Output Option | Yes (per I/O pin) |
EPM3032ATC44-4 Pin Configuration
| Pin 1 | I/O — User I/O pin (macrocell I/O) |
| Pin 2 | I/O — User I/O pin (macrocell I/O) |
| Pin 3 | I/O — User I/O pin (macrocell I/O) |
| Pin 4 | I/O — User I/O pin (macrocell I/O) |
| Pin 5 | I/O — User I/O pin (macrocell I/O) |
| Pin 6 | I/O — User I/O pin (macrocell I/O) |
| Pin 7 | GND — Ground |
| Pin 8 | I/O — User I/O pin (macrocell I/O) |
| Pin 9 | I/O — User I/O pin (macrocell I/O) |
| Pin 10 | I/O — User I/O pin (macrocell I/O) |
| Pin 11 | I/O — User I/O pin (macrocell I/O) |
| Pin 12 | GND — Ground |
| Pin 13 | I/O — User I/O pin (macrocell I/O) |
| Pin 14 | I/O — User I/O pin (macrocell I/O) |
| Pin 15 | I/O — User I/O pin (macrocell I/O) |
| Pin 16 | I/O — User I/O pin (macrocell I/O) |
| Pin 17 | I/O — User I/O pin (macrocell I/O) |
| Pin 18 | I/O — User I/O pin (macrocell I/O) |
| Pin 19 | I/O — User I/O pin (macrocell I/O) |
| Pin 20 | I/O — User I/O pin (macrocell I/O) |
| Pin 21 | GND — Ground |
| Pin 22 | I/O — User I/O pin (macrocell I/O) |
| Pin 23 | I/O — User I/O pin (macrocell I/O) |
| Pin 24 | I/O — User I/O pin (macrocell I/O) |
| Pin 25 | OE2/GCLK2 — Output enable 2 / Global clock 2 |
| Pin 26 | I/O — User I/O pin (macrocell I/O) |
| Pin 27 | GND — Ground |
| Pin 28 | VCC — 3.3 V core supply |
| Pin 29 | I/O — User I/O pin (macrocell I/O) |
| Pin 30 | I/O — User I/O pin (macrocell I/O) |
| Pin 31 | OE1/GCLK1 — Output enable 1 / Global clock 1 |
| Pin 32 | I/O — User I/O pin (macrocell I/O) |
| Pin 33 | I/O — User I/O pin (macrocell I/O) |
| Pin 34 | VCC — 3.3 V I/O supply |
| Pin 35 | I/O — User I/O pin (macrocell I/O) |
| Pin 36 | GND — Ground |
| Pin 37 | I/O — User I/O pin (macrocell I/O) |
| Pin 38 | I/O — User I/O pin (macrocell I/O) |
| Pin 39 | I/O — User I/O pin (macrocell I/O) |
| Pin 40 | I/O — User I/O pin (macrocell I/O) |
| Pin 41 | TDI — JTAG Test Data In |
| Pin 42 | TCK — JTAG Test Clock |
| Pin 43 | TMS — JTAG Test Mode Select |
| Pin 44 | TDO — JTAG Test Data Out |
Typical Applications
EPM3032ATC44-4 is suitable for 6 applications: Microcontroller I/O Expansion, Address Decoding and Bus Glue Logic, TTL Glue-Logic Replacement, Industrial Control and Sequencing, Power-Supply Sequencing and Supervisor, State Machine and Protocol Bridging.
Microcontroller I/O Expansion
The EPM3032ATC44-4 expands GPIO count for microcontrollers lacking sufficient I/O, such as legacy 8051 or PIC16 parts. Its 34 user I/O pins and 4.5 ns tPD allow real-time parallel port expansion with deterministic timing - critical for industrial control panels. The MultiVolt I/O interface (1.8 V, 2.5 V, 3.3 V) lets it bridge between a 1.8 V MCU and 3.3 V peripherals without level shifters. Programming via JTAG enables in-field firmware updates.
Recommended
Address Decoding and Bus Glue Logic
Use the EPM3032ATC44-4 for legacy bus-interface glue logic in systems based on ISA, PC/104, or parallel SRAM/Flash architectures. The 4.5 ns tPD makes it suitable for the address-to-CS path on memories with tAA in the 10-15 ns range, providing 5-10 ns margin. The non-volatile EEPROM configuration boots instantly without external flash, simplifying system design. 34 I/O pins are ample for 8-bit/16-bit address/control demultiplexing plus chip-select fan-out.
Recommended
TTL Glue-Logic Replacement
Replace discrete 74LS/74HC TTL logic clusters (e.g., 74LS138 decoders, 74LS151 muxes, 74LS374 latches) with a single EPM3032ATC44-4, reducing board area, BOM count, and power consumption. The 32 macrocells comfortably absorb 5-8 equivalent TTL packages. Deterministic 4.5 ns timing matches or exceeds TTL propagation delays. JTAG ISP allows late-stage board revisions without respinning PALs or reburning PROMs, accelerating development cycles.
Recommended
Industrial Control and Sequencing
The EPM3032ATC44-4 is well suited for industrial relay sequencing, motor-start interlock logic, and safety watchdog circuits thanks to its instant-on non-volatile EEPROM and 3.3 V core. The 1000 erase/program cycle rating and 20-year retention support long-life industrial deployment. Combined with the open-drain output option per I/O pin, the CPLD can drive wired-OR fault signals shared across multiple subsystems. Industrial-temperature variants (-10NAB, -I) extend operating range to -40 C to +85 C.
Recommended
Power-Supply Sequencing and Supervisor
Generate precision power-up and power-down sequencing signals for multi-rail systems (e.g., 1.8 V core / 3.3 V IO / 5 V analog) with the EPM3032ATC44-4. Its 4.5 ns propagation delay lets it respond within microseconds to PG (power-good) inputs from DC-DC converters, ensuring strict rail-on/rail-off ordering. The non-volatile EEPROM guarantees deterministic boot behavior from cold-start. Open-drain outputs make it easy to wire-OR multiple PG signals from independent regulators.
Recommended
State Machine and Protocol Bridging
Implement custom state machines and protocol bridges (e.g., SPI-to-parallel, UART-to-I2C glue, PWM generators) using the EPM3032ATC44-4. With 32 macrocells you can express 5-8 state FSMs plus auxiliary counters. The 4.5 ns tPD supports SPI clock rates up to ~50 MHz when used as a shift-register bridge. JTAG ISP allows in-circuit debugging and rapid iteration. MultiVolt I/O eliminates external level shifters when bridging 1.8 V and 3.3 V domains.
Recommended
Recommended Products Summary
Engineering reference data for EPM3032ATC44-4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3032ATC44-4N | EPM3032ATC44-7N | EPM3032ATC44-10N | EPM3032ATC44-10NAB | EPM3032ALI44-10N | LC4032V-44TN44 |
|---|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel | Intel | Intel | Intel | Intel | Lattice Semiconductor |
| Package | 44-TQFP | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Logic Array Blocks | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| User I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 | 30 |
| tPD (Propagation Delay) | 4.5 ns | 4.5 ns | 7.5 ns | 10 ns | 10 ns | 10 ns | 5.0 ns |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Programming Interface | JTAG (IEEE 1149.1) | JTAG | JTAG | JTAG | JTAG | JTAG | JTAG (Lattice-specific chain) |
| Lead-Free Finish | Unknown / non-N suffix | Yes (N suffix) | Yes (N suffix) | Yes (N suffix) | Yes (N suffix) | Yes (N suffix) | Yes (Lattice standard) |
| Operating Temperature | Commercial (0 C to +70 C) | Commercial | Commercial | Commercial | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) | Commercial |
Key Differentiators
- Industry-standard 4.5 ns tPD with 32-macrocell capacity in compact 44-TQFP (vs EPM3032ATC44-7N)
- Drop-in same-package lead-free option (vs EPM3032ATC44-4N)
- Industrial temperature grade option in same package (vs EPM3032ATC44-10NAB)
- Cross-brand drop-in with mature JTAG ISP ecosystem (vs LC4032V-44TN44 (Lattice))
Design Notes
Estimated: at 100% I/O toggling with 34 outputs driving 5 pF loads at 50 MHz, ICCINT for the EPM3032ATC44-4 is roughly 60-80 mA. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VCC pin (pins 28 and 34) and a bulk 10 uF tantalum at the board power entry. The MultiVolt I/O pins have separate VCCIO rails on larger MAX 3000A devices, but the 44-pin TQFP shares a single 3.3 V rail; ensure all driven I/O loads respect 3.3 V VIH/VIL thresholds.
Route JTAG signals TDI (pin 41), TDO (pin 44), TMS (pin 43), and TCK (pin 42) with 50 ohm controlled impedance if trace length exceeds 50 mm. Add 10 kohm pull-ups on TMS and TDI per IEEE 1149.1 to keep the JTAG state machine in known state at power-up. Place a JTAG header (2x5 0.1 inch) at the board edge for ByteBlasterMV/USB-Blaster cable access during production programming and in-field firmware updates.
Do not assume MAX 3000A device files (.pof) are forward-compatible with newer Quartus Prime releases - the MAX 3000A family is supported only by legacy Quartus II 9.0 or MAX+PLUS II. Migrate your design source (VHDL/Verilog) to a supported modern family (MAX V, MAX 10) before Intel Quartus II support ends. Additionally, when migrating from EPM3032ATC44-4 to EPM3032ATC44-4N, verify reflow profile compatibility if mixing Pb-free and SnPb finishes on the same board.
Compliance Information
RoHS compliance status is unclear from the verified web data. The non-N suffix variant (EPM3032ATC44-4) is presumed to use SnPb or eutectic finish (non-RoHS) per Altera's historical part-numbering convention. Choose the -4N variant for confirmed RoHS compliance. AEC-Q100 is not applicable to CPLD logic devices. Conflict-minerals compliance should be requested via distributor CoC.
