EPM3032ATC44-4N - 32-Macrocell MAX 3000A CPLD, 4.5ns | Intel/Altera
MPN: EPM3032ATC44-4N β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.17 | $3.17 |
| 10 | $2.85 | $28.50 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.78 | $1,780.00 |
EPM3032ATC44-4N Overview
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the deterministic timing of PAL/GAL architecture with higher logic density, typically integrating multiple PAL-like logic blocks (LABs) connected through a programmable interconnect array (PIA). Within the broader programmable logic hierarchy, CPLDs sit below FPGAs in density but above simple SPLDs in capacity, providing instant-on behavior, single-chip non-volatile storage, and predictable timing that is ideal for system boot, address decoding, and interrupt management before an FPGA or ASIC is configured. The MAX 3000A series further adds a 3.3 V core with 5.0 V-tolerant I/O, allowing direct interfacing with mixed-voltage buses.
Key features of the EPM3032ATC44-4N include 32 macrocells across 2 logic array blocks, 34 usable I/O pins, 100% interconnect with predictable fixed delays, a built-in boundary-scan (BST) circuit compliant with IEEE 1149.1, and pin-locking capability that preserves pin assignments through design iterations. It supports 5.0 V ISP (in-system programmability) and offers a typical standby current well below 1 mA, enabling low-power always-on designs.
In typical applications, the EPM3032ATC44-4N is used as bus decoder and address latch in microcontroller and embedded-processor boards, as a state-machine and sequencer in industrial controllers, and as a glue-logic bridge between incompatible voltage domains or interface standards (PCI, ISA, UART, memory controllers). Designers value the device for its deterministic timing, JTAG-based re-programmability, and the Quartus II design flow that allows rapid development of combinational and sequential logic.
When designing with this part, plan for a 3.3 V VCCINT and provide proper JTAG TMS/TCK/TDI/TDO pull-ups; the MAX 3000A series requires a Quartus-supported device programmer or JTAG download cable (such as the ByteBlasterMV) for ISP. Always include decoupling capacitors on every VCC pin and route the global clear (DEV_CLRn) and global OE (DEV_OE) signals carefully to maintain signal integrity at high toggle rates.
This page synthesizes distributor pricing, same-family drop-in alternatives such as EPM3032ALC44-4N and EPM3032ATC44-10N, JTAG programming guidance, and practical design notes not consolidated on any single manufacturer or distributor page.
Drop-in alternatives for EPM3032ATC44-4N 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 EPM3032ATC44-4N (same form factor and footprint) β differing in Package, RoHS Status, Operating Temperature, Family, Configuration Memory.
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EPM3032ATC44-4
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.74 / Unit
View Datasheet βEPM3032ALC44-4N
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.32 / Unit
View Datasheet βEPM3032ATC44-10N
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$2.46 / Unit
View Datasheet βEPM3032ATC44-10
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.78 / Unit
View Datasheet βEPM3032ATC44-10AA
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$2.95 / Unit
View Datasheet βEPM3032ATC44-4N Maximum Ratings & Electrical Characteristics
| Series | MAX 3000A |
| Family | MAX 3000A CPLD family (Altera/Intel) |
| Macro Cells | 32 |
| Logic Array Blocks (LABs) | 2 |
| User I/Os | 34 |
| Propagation Delay (tPD) | 4.5 ns |
| Maximum Frequency | 227.3 MHz |
| Configuration Memory | EEPROM (non-volatile, in-system programmable) |
| Supply Voltage (VCCINT) | 3.3 V |
| I/O Tolerance | 5.0 V tolerant inputs |
| Operating Temperature Range | 0C to +70C (commercial) |
| Package | 44-pin TQFP |
| Programming Interface | IEEE 1149.1 JTAG, IEEE 1532 ISP |
| Mounting Type | Surface Mount |
| Boundary-Scan (BST) | Compliant with IEEE 1149.1 |
EPM3032ATC44-4N 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 | GND β Ground |
| 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 | I/O β User I/O pin (macrocell I/O) |
| 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 | I/O β User I/O pin (macrocell I/O) |
| Pin 14 | TDI β JTAG Test Data In (dedicated input, with internal pull-up) |
| Pin 15 | TMS β JTAG Test Mode Select (dedicated input, with internal pull-up) |
| Pin 16 | VCC β VCCINT 3.3 V supply |
| Pin 17 | TCK β JTAG Test Clock (dedicated input, with internal pull-up) |
| 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 | GND β Ground |
| Pin 31 | DEV_OE β Global output enable (dedicated input, with internal pull-up) |
| Pin 32 | I/O β User I/O pin (macrocell I/O) |
| Pin 33 | I/O β User I/O pin (macrocell I/O) |
| Pin 34 | VCC β VCCINT 3.3 V supply |
| Pin 35 | I/O β User I/O pin (macrocell I/O) |
| 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 | DEV_CLRn β Global clear (dedicated input, with internal pull-up) |
| 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 | TDO β JTAG Test Data Out (dedicated output) |
| Pin 44 | VCC β VCCINT 3.3 V supply |
Typical Applications
EPM3032ATC44-4N is suitable for 6 applications: Microcontroller Bus Decoder and Chip-Select Logic, Industrial Glue Logic and Voltage Domain Bridge, State Machine and Sequencing Controller, FPGA Configuration and Boot Companion, Peripheral Interfacing and Protocol Conversion, Test and Measurement Instrument Front-End.
Microcontroller Bus Decoder and Chip-Select Logic
The EPM3032ATC44-4N's 32 macrocells and 4.5 ns tPD make it ideal for address decoding in 8- and 16-bit microcontroller systems. Its non-volatile EEPROM and JTAG interface allow rapid prototyping and field updates of chip-select maps. With 5 V-tolerant I/Os and a 3.3 V VCCINT, it bridges 3.3 V cores to 5 V peripherals without additional level shifters. The 4.5 ns propagation delay adds less than one clock cycle at 50 MHz, preserving memory access timing margins in real-time embedded designs.
Recommended
Industrial Glue Logic and Voltage Domain Bridge
In industrial PLCs and factory automation modules, the EPM3032ATC44-4N serves as glue logic to bridge incompatible interface standards such as PCI, ISA, UART, and legacy parallel buses. The 5 V-tolerant I/Os allow direct interfacing with 5 V sensors and actuators from a 3.3 V core. The MAX 3000A architecture delivers deterministic timing for real-time control loops, while the JTAG-based ISP enables firmware updates in the field without removing the module from the production line.
Recommended
State Machine and Sequencing Controller
Designers use the EPM3032ATC44-4N to implement Moore and Mealy state machines for sequencing power rails, motor phases, and timing-critical handshake protocols. The 32 macrocells can hold a 16-state sequential machine with output decode, or multiple smaller state machines in parallel. The 4.5 ns tPD supports sequencing events at up to 227.3 MHz, while the non-volatile EEPROM ensures the state machine boots deterministically on every power-up - critical for safety interlocks and motor commutation.
Recommended
FPGA Configuration and Boot Companion
The EPM3032ATC44-4N is commonly used as a configuration controller for FPGAs such as the Altera Cyclone or Xilinx Spartan families, generating PROG_B, DONE, and INIT_B handshake signals and switching configuration sources between flash and JTAG. Its 5 V-tolerant I/Os are ideal for driving legacy configuration pins, while the 4.5 ns tPD ensures tight timing margins during multi-FPGA parallel configuration. The 34 user I/Os provide enough headroom to manage two or three FPGA configuration chains plus status LEDs.
Recommended
Peripheral Interfacing and Protocol Conversion
The EPM3032ATC44-4N handles protocol conversion between I2C, SPI, UART, and parallel buses in embedded designs where a microcontroller lacks the required peripherals or the timing budget is too tight for software emulation. The 4.5 ns tPD and 227.3 MHz fMAX enable bit-banged interfaces at multi-MHz speeds. With 34 user I/Os, it can implement a multi-channel UART or SPI multiplexer with DMA-style handshaking, offloading the host MCU and reducing firmware complexity.
Recommended
Test and Measurement Instrument Front-End
In bench instruments and data-acquisition front-ends, the EPM3032ATC44-4N provides deterministic timing for trigger sequencing, channel multiplexing, and timing-edge generation. Its 4.5 ns tPD supports precise delay lines down to sub-100 ps steps when used with EPM3C-series delay macros, and the JTAG interface simplifies calibration updates in production. The 5 V-tolerant I/Os allow direct interfacing with legacy analog front-ends and CMOS sensor arrays without level-shifters.
Recommended
Recommended Products Summary
Engineering reference data for EPM3032ATC44-4N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3032ATC44-4 | EPM3032ALC44-4N | EPM3032ATC44-10N | EPM3032ATC44-10 | EPM3032ATC44-10AA |
|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly 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 |
| Macro Cells | 32 | 32 | 32 | 32 | 32 | 32 |
| User I/Os | 34 | 34 | 34 | 34 | 34 | 34 |
| Speed Grade (tPD) | 4.5 ns | 4.5 ns | 4.5 ns | 10 ns | 10 ns | 10 ns |
| Configuration Memory | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Programming Interface | JTAG (IEEE 1149.1) / ISP (IEEE 1532) | JTAG / ISP - same | JTAG / ISP - same | JTAG / ISP - same | JTAG / ISP - same | JTAG / ISP - same |
| VCCINT | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Key Differentiators
- Fastest speed grade in the MAX 3000A -4 family (vs EPM3032ATC44-10N)
- Non-volatile EEPROM - true instant-on behavior (vs EPM240T100C5N (MAX II))
- 5 V-tolerant I/O for mixed-voltage designs (vs EPM3064ATC44-10NAF)
Design Notes
The EPM3032ATC44-4N requires a clean 3.3 V VCCINT supply on pins 16, 34, and 44 (the 44-pin TQFP exposes three VCC pads). Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VCC pin, plus a single 10 uF bulk tantalum or ceramic capacitor near the device. Although the device tolerates 5 V inputs, the I/O bank switches from VCCIO=3.3 V, so level translation to 5 V outputs requires external buffers or pull-ups. Add a 10 kohm pull-up on DEV_CLRn and DEV_OE if not actively driven, otherwise floating levels can intermittently clear or enable outputs.
Route the four JTAG signals (TDI, TDO, TMS, TCK) as a short matched-length bus to a 2x5 or 2x10 header, keeping stubs below 10 mm to avoid reflections at the JTAG TCK frequency. Provide a ground guard ring around the JTAG header to reduce ESD coupling. Place the EPM3032ATC44-4N on a solid ground plane stitched with 4-6 vias around the package perimeter to minimize ground bounce on simultaneous switching outputs (SSO). Keep high-speed traces (clock, JTAG) on the top layer over continuous ground to control impedance at ~50 ohms.
Common design mistakes with the EPM3032ATC44-4N include: (1) leaving DEV_OE floating - it must be tied high through a pull-up or driven by a control signal, otherwise outputs toggle unpredictably at power-up; (2) using the Quartus default 'unused pins' setting of 'As inputs tri-stated' when the design needs 'As outputs driving ground' to prevent floating inputs from drawing supply current; (3) mixing 3.3 V and 5 V on the same I/O bank without checking the absolute-maximum ratings - long-term 5 V exposure on VCCIO=3.3 V outputs degrades the I/O drivers; (4) attempting ISP without connecting TCK to a clean clock source - noisy TCK causes JTAG state-machine errors.
Compliance Information
RoHS status not provided in verified web data; the -4N suffix traditionally indicates lead-free finish in Altera MAX 3000A nomenclature, but RoHS compliance should be confirmed from the manufacturer's product page. AEC-Q100 is not applicable for this commercial-grade part.
