EPM3128ATC144-7 - MAX 3000A CPLD, 128 Macrocells, 7.5ns | Intel
MPN: EPM3128ATC144-7 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.5 | $13.50 |
| 10 | $12.15 | $121.50 |
| 100 | $10.8 | $1,080.00 |
| 500 | $9.45 | $4,725.00 |
| 1,000 | $8.1 | $8,100.00 |
EPM3128ATC144-7 Overview
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like logic blocks on a single chip with a programmable interconnect matrix. CPLDs sit in the programmable logic hierarchy between simple SPLDs (PALs/GALs) and high-density FPGAs, offering deterministic timing, instant-on configuration from on-chip EEPROM, and superior I/O density for glue-logic applications. The MAX 3000A family specifically targets low-cost, high-volume designs requiring 32 to 512 macrocells.
Key features of the EPM3128ATC144-7 include 2,500 usable gates, 128 macrocells organized in 8 Logic Array Blocks (LABs), 96 user I/Os, multiVolt I/O supporting 1.8V/2.5V/3.3V interfaces, and built-in boundary-scan test support. The device also provides programmable power-saving modes per macrocell to reduce quiescent power, plus 3.3V in-system programmability that eliminates the need for separate PROM storage. The CMOS EEPROM process technology ensures zero-configuration-time instant-on behavior, ideal for boot-critical applications.
The EPM3128A utilizes a classic MAX architecture with each LAB containing 16 macrocells, each comprising a programmable AND/OR array with configurable flip-flops. A global programmable interconnect array (PIA) routes signals between LABs and I/O pins with predictable, fixed delays - making timing analysis straightforward compared to FPGAs. The device supports JTAG-based boundary scan and ISP-compliant programming via Altera/Intel Quartus II software using a ByteBlaster or USB-Blaster download cable.
Typical applications include PCI bus interface glue logic, bus decoding and address mapping, state-machine controllers, I/O expansion for microcontrollers, power-up sequencing logic, and peripheral interfacing in industrial control systems. The deterministic timing and instant-on behavior make it well suited for ASIC prototyping, legacy system upgrades, and designs where configuration memory must be non-volatile.
When designing with the EPM3128ATC144-7, ensure the JTAG chain is properly terminated with 4.7k pull-ups on TDI/TMS to keep them high during reset. Decouple all VCCINT and VCCIO pins with 0.1 microfarad ceramic capacitors placed within 5mm of each pin pair. The Quartus II design software supports VHDL, Verilog, and schematic entry for this device family.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for EPM3128ATC144-7 — 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 EPM3128ATC144-7 (same form factor and footprint) — differing in Package, Operating Temperature, RoHS Status, Usable Gates, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM3128ATC144-7N
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →EPM3128ATC144-5N
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$13.75 / Unit
View Datasheet →EPM3128ATC144-10N
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$6.56 / Unit
View Datasheet →EPM1270T144C5N
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$19.75 / Unit
View Datasheet →EPM3128ATC144-7 Maximum Ratings & Electrical Characteristics
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 128 |
| Usable Gates | 2,500 |
| Logic Array Blocks (LABs) | 8 (16 macrocells each) |
| User I/Os | 96 |
| Package | TQFP-144 (22x22 mm) |
| Supply Voltage (VCCINT) | 3.3 V |
| I/O Voltage (VCCIO) | 1.8 V / 2.5 V / 3.3 V (multiVolt) |
| Speed Grade | -7 |
| Pin-to-Pin Propagation Delay (tPD) | 7.5 ns |
| Maximum Internal Frequency (fCNT) | 129.9 MHz |
| Programming Technology | CMOS EEPROM (in-system programmable) |
| JTAG Support | IEEE 1149.1 boundary-scan + ISP |
| Operating Temperature | 0C to +70C (Commercial) |
| Mounting Type | Surface Mount |
| Process Technology | CMOS EEPROM |
EPM3128ATC144-7 tqfp-144 (22x22 mm) Pin Configuration Guide
Pin configuration for EPM3128ATC144-7 (tqfp-144 (22x22 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EPM3128ATC144-7.
Refer to the datasheet for full pin configuration.
Typical Applications
EPM3128ATC144-7 is suitable for 6 applications: PCI Bus Interface Glue Logic, Microcontroller I/O Expansion and Bus Decoding, Industrial Control State Machines, Power-Up Sequencing Logic, ASIC Prototyping and Legacy System Upgrades, Peripheral Interfacing and Protocol Bridging.
PCI Bus Interface Glue Logic
The EPM3128ATC144-7 is well suited as glue logic for PCI Local Bus Specification Revision 2.2 compliant interfaces. According to the MAX 3000A datasheet, the -4, -5, -6, -7, and -10 speed grades meet PCI SIG timing requirements. The device's 96 user I/Os can decode address and command signals, generate chip-select logic for multiple peripherals, and arbitrate bus requests. With 128 macrocells and 7.5 ns pin-to-pin delay, it replaces discrete 74LS/74F glue-logic ICs while reducing PCB area and improving reliability.
Recommended
Microcontroller I/O Expansion and Bus Decoding
The EPM3128ATC144-7 serves as a flexible I/O expander and address decoder for microcontrollers with limited GPIO count. Its 96 user I/Os and 128 macrocells can decode address ranges for SRAM, Flash, and peripheral chip-selects, offloading complex timing tasks from the host MCU. MultiVolt I/O support (1.8V/2.5V/3.3V) allows direct interfacing with modern low-voltage microcontrollers. In-system programmability via JTAG enables rapid development iteration without removing the device from the board.
Recommended
Industrial Control State Machines
The EPM3128ATC144-7 is ideal for implementing complex state machines in industrial control equipment, where deterministic timing and non-volatile configuration are essential. Its 7.5 ns pin-to-pin delay provides predictable response times for sensor input processing and actuator control signal generation. The 128 macrocells accommodate multi-state control sequences with conditional branching. EEPROM-based configuration means instant-on startup at power-up, critical for safety shutdown systems and motor controllers.
Recommended
Power-Up Sequencing Logic
Power-up sequencing in multi-rail systems benefits from the EPM3128ATC144-7's instant-on EEPROM configuration. The device powers up in a deterministic state within nanoseconds, generating programmable enable signals for downstream voltage regulators, ASICs, and FPGAs in their required sequence. The 96 user I/Os can monitor power-good inputs and control up to 96 sequencing channels. With 3.3V core and multiVolt I/O, it interfaces directly with 1.8V, 2.5V, and 3.3V power management ICs.
Recommended
ASIC Prototyping and Legacy System Upgrades
The EPM3128ATC144-7 is widely used to prototype ASIC designs before committing to mask tooling, allowing design verification and timing analysis on real hardware. Its deterministic 7.5 ns timing simplifies timing closure for migrated logic. For legacy systems where the original ASIC is obsolete, the device can implement drop-in replacement glue logic with identical functionality. The 144-pin TQFP footprint and JTAG ISP support accelerate development and field-upgrade workflows.
Recommended
Peripheral Interfacing and Protocol Bridging
The EPM3128ATC144-7 can bridge between incompatible peripheral protocols - for example, converting parallel bus data to SPI, I2C, or UART formats. Its 128 macrocells handle state machines for protocol conversion while 96 user I/Os provide ample interface width. MultiVolt I/O enables direct connection to 1.8V sensors and 3.3V processors without level shifters. The 129.9 MHz internal frequency supports high-speed protocol conversion up to SPI clock rates of 60+ MHz with proper design.
Recommended
Recommended Products Summary
Engineering reference data for EPM3128ATC144-7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3128ATC144-7N | EPM3128ATC144-5N | EPM3128ATC144-10N | EPM1270T144C5N |
|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) |
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Macrocells / Logic Elements | 128 macrocells | 128 macrocells | 128 macrocells | 128 macrocells | 1270 LEs (MAX II) |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Lead-Free Finish | No (SnPb) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) | Yes (Pb-free) |
| Architecture | MAX 3000A (EEPROM CPLD) | MAX 3000A | MAX 3000A | MAX 3000A | MAX II (Flash CPLD) |
Key Differentiators
- Identical silicon, lead-free finish (vs EPM3128ATC144-7N)
- Faster speed grade option (vs EPM3128ATC144-5N)
- Higher logic capacity in same package (vs EPM1270T144C5N)
Design Notes
The EPM3128ATC144-7 requires both VCCINT (3.3V core) and VCCIO (1.8V/2.5V/3.3V I/O) supplies. Decouple each VCCINT pin with a 0.1 microfarad X7R ceramic capacitor placed within 5mm of the pin, and add a single 10 microfarad bulk tantalum or ceramic capacitor near the device. VCCIO banks can be configured independently to interface with mixed-voltage peripherals. All ground pins must be connected to a solid ground plane to reduce ground bounce and ensure JTAG ISP reliability.
Route JTAG signals (TCK, TMS, TDI, TDO) with 4.7k pull-up resistors on TDI and TMS to keep them high during power-up reset. Maintain stub lengths below 25mm on JTAG signals to ensure signal integrity for ISP programming. The 144-pin TQFP package uses 0.5mm pitch gull-wing leads - use 0.15mm trace/space design rules with 0.25mm vias under the package. Provide a continuous ground plane beneath the device for thermal dissipation and signal return paths.
Do not leave JTAG pins floating - TCK, TMS, TDI require pull-up termination for stable ISP behavior. The Quartus II software (or Intel Quartus Prime) is required for design entry; legacy MAX+PLUS II software also supports the MAX 3000A family. Do not apply voltage to I/O pins before VCCINT and VCCIO are powered, as this can trigger latch-up. When migrating from non-N to N variants (lead-free), verify that your PCB assembly process supports Pb-free reflow profiles (peak 260C).
Compliance Information
EPM3128ATC144-7 uses SnPb finish and is NOT RoHS compliant. Use EPM3128ATC144-7N for RoHS-compliant designs. Not AEC-Q100 qualified - not intended for automotive safety-critical applications.
