EPM7256AETI100-7N - 256-MacroCell MAX 7000A CPLD, 100TQFP | Intel
MPN: EPM7256AETI100-7N ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $49.63 | $49.63 |
| 10 | $45.2 | $452.00 |
| 100 | $39.5 | $3,950.00 |
| 250 | $36.8 | $9,200.00 |
| 500 | $34.2 | $17,100.00 |
Drop-in alternatives for EPM7256AETI100-7N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM7256AETI100-7
✅ Drop-In📋 Reference alternative (not in catalog)
EPM7256AETC100-10N
✅ Drop-In✓ In Stock
$13.1 / Unit
View Datasheet →EPM7256AEFI100-7
✅ Drop-In✓ In Stock
$65.4 / Unit
View Datasheet →EPM7256AETI100-10N
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
EPM7256AEFC100-7
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$15.2 / Unit
View Datasheet →EPM7128AETI100-7N
✅ Drop-In✓ In Stock
$28.5 / Unit
View Datasheet →EPM7256AETI100-7N Maximum Ratings & Electrical Characteristics
| Family | MAX 7000A |
| Device Type | CPLD - Complex Programmable Logic Device |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Maximum User I/O | 84 |
| Logic Elements / Blocks | 16 Logic Array Blocks |
| Maximum Operating Frequency | 126.6 MHz |
| Propagation Delay (tPD) | 7.5 ns |
| Core Supply Voltage (VCCINT) | 3.3 V |
| I/O Supply Voltage (VCCIO) | 3.3 V |
| Technology | CMOS, EEPROM-based configuration |
| Programmability | In-system programmable via JTAG (IEEE 1149.1) |
| Package | 100-pin TQFP (TQ100, 14x14 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
EPM7256AETI100-7N 100-pin tqfp (tq100, 14x14 mm, 0.5 mm pitch) Pin Configuration Guide
Complete pinout information for EPM7256AETI100-7N (100-pin tqfp (tq100, 14x14 mm, 0.5 mm pitch) 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 EPM7256AETI100-7N.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
EPM7256AETI100-7N is suitable for 6 applications: Address Decoding and Bus Interfacing, State-Machine and Control Logic, Peripheral Glue Logic Replacement, I/O Expansion and Voltage Translation, DSP and Microcontroller Co-Processor, Legacy Industrial System Modernization.
Address Decoding and Bus Interfacing
The EPM7256AETI100-7N excels at address decoding and bus-interface bridging between microprocessors, microcontrollers, and peripherals. With 256 macrocells and 84 user I/O, it can decode wide address buses (24-bit or larger) into dozens of chip-select lines in a single device, replacing banks of 74-series glue logic. The MAX 7000A deterministic timing of 7.5 ns tPD guarantees that chip-select assertions stay within one clock cycle, critical for memory and peripheral access without wait states. In-system programmability via JTAG (IEEE 1149.1) lets designers modify the decoding map after PCB layout, while pin-locking preserves the existing footprint. Compared to discrete 74HC138/139 decoders, this CPLD reduces board area by 70% and improves EMI by eliminating long parallel trace runs.
Recommended
State-Machine and Control Logic
The EPM7256AETI100-7N is widely used to implement finite-state machines, sequencers, and protocol controllers in embedded systems. The MAX 7000A macrocell architecture provides a programmable AND/OR array with a flip-flop per macrocell, ideal for state-machine encoding schemes including one-hot, binary, and Gray. With 126.6 MHz fCNT, the device runs state machines at speeds sufficient to handle UART, SPI, I2C, and custom bit-banged protocols in real time. The 5,000 usable gates handle complex multi-state designs such as motor-control sequencers, industrial protocol bridges, and test-pattern generators. Industrial -40C to +85C temperature rating supports factory-floor deployments, while deterministic timing simplifies Worst-Case Timing Analysis (WCTA) for safety-critical applications.
Recommended
Peripheral Glue Logic Replacement
Designers replace discrete 74HC/74AHC glue-logic gates with the EPM7256AETI100-7N to consolidate dozens of small-scale integration (SSI) packages into a single programmable device. 256 macrocells equate to roughly 30 to 40 standard SSI packages worth of logic, dramatically reducing PCB area, BOM count, and assembly cost. The 100-pin TQFP footprint provides 84 user I/O that can be reconfigured at any time via JTAG, enabling late-stage design changes without board respins. Compared to a discrete-logic implementation, this CPLD also improves signal integrity by eliminating long SSI-to-SSI trace runs and centralizing timing within a single deterministic device. Industrial temp and 3.3 V operation match modern low-power system requirements.
Recommended
I/O Expansion and Voltage Translation
The EPM7256AETI100-7N serves as a flexible I/O expander and 5 V to 3.3 V level translator between legacy and modern logic families. Its 3.3 V I/O accept 5 V TTL-level inputs (per MAX 7000A datasheet), so the same device can bridge a 5 V microcontroller bus to a 3.3 V peripheral such as an SDRAM, DSP, or modern SoC. With 84 user I/O, one CPLD can replace multiple bus-switch or level-translator ICs, simplifying the BOM and freeing board area. In-system programmability enables last-minute I/O mapping changes during board bring-up. Industrial temperature rating supports outdoor and factory deployments where mixed-voltage signaling is common.
Recommended
DSP and Microcontroller Co-Processor
The EPM7256AETI100-7N acts as a hardware co-processor for DSPs and microcontrollers, offloading real-time tasks such as DMA sequencing, FIFO control, custom timer chains, and interrupt aggregation. The 126.6 MHz internal counter rate and 7.5 ns tPD propagation delay handle timing-critical peripherals without burdening the main processor. Designers implement glue logic between a TI C6000 DSP, NXP PowerPC, or ARM Cortex-M microcontroller and external memory or ADC/DAC devices, freeing CPU cycles for algorithmic work. The deterministic timing model of MAX 7000A simplifies Worst-Case Timing Analysis (WCTA) compared with LUT-based FPGAs, important for safety-critical or hard-real-time applications.
Recommended
Legacy Industrial System Modernization
The EPM7256AETI100-7N is commonly used to modernize legacy industrial systems by replacing obsolete or end-of-life discrete logic and PAL/GAL devices. Industrial machines, PLCs, and test equipment built in the 1990s and 2000s often rely on MAX 7000A CPLDs for control logic; new identical parts keep these systems running without costly redesign or re-certification. The in-system programmability via JTAG enables field firmware updates via boundary-scan, useful for upgrades during scheduled maintenance windows. The -40C to +85C industrial temperature rating and 3.3 V operation suit factory-floor environments with wide thermal variation. For long-life industrial platforms, the part's established reliability track record and pin-compatible MAX II Z migration path are key selection criteria.
Recommended
Recommended Products Summary
Engineering reference data for EPM7256AETI100-7N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7256AETI100-7 | EPM7256AETC100-10N | EPM7256AEFI100-7 | EPM7128AETI100-7N |
|---|---|---|---|---|---|
| Package | TQFP-100 (14x14 mm, 0.5 mm pitch) | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Brand | Intel (formerly Altera) | Intel - same | Intel - same | Intel - same | Intel - same |
| Macrocells | 256 | 256 - same | 256 - same | 256 - same | 128 (-50%) |
| Usable Gates | 5,000 | 5,000 - same | 5,000 - same | 5,000 - same | 2,500 (-50%) |
| User I/O | 84 | 84 - same | 84 - same | 84 - same | 84 - same |
| tPD (Propagation Delay) | 7.5 ns | 7.5 ns - same | 10 ns (slower) | 7.5 ns - same | 7.5 ns - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | 0C to +70C (Commercial) | -40C to +85C - same | -40C to +85C - same |
| RoHS Compliance | Yes (lead-free, -N suffix) | No (tin-lead finish) | Yes (lead-free) | Varies | Yes (lead-free) |
| Core Voltage | 3.3 V | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same |
| Lifecycle Status | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy |
Key Differentiators
- 256 macrocells with 84 user I/O in compact 100-pin TQFP (vs EPM7128AETI100-7N)
- Industrial temperature rating with lead-free RoHS finish (vs EPM7256AETC100-10N)
- Faster 7.5 ns tPD versus 10 ns grade in same package (vs EPM7256AETI100-10N)
- Drop-in compatibility with non-N finish for legacy designs (vs EPM7256AETI100-7)
Design Notes
The EPM7256AETI100-7N requires a clean 3.3 V supply on VCCINT and VCCIO. Place a 0.1 uF decoupling capacitor adjacent to every supply pin, with a bulk 10 uF tantalum or ceramic at the board entry. According to the MAX 7000A datasheet, inrush current during configuration can reach several hundred mA; ensure the regulator has adequate headroom and that the supply ramp is monotonic to avoid partial-configuration latch-up.
Route JTAG signals (TDI, TDO, TMS, TCK) with controlled impedance and keep them short. Per IEEE 1149.1, place a 10 kohm pull-up on TCK and TMS to prevent spurious clocking during board reset. The TRST pin should be tied to VCCIO through a 1 kohm resistor per the MAX 7000A datasheet, or pulled low if not used. Keep JTAG traces away from high-frequency switching signals to avoid programming failures.
The 100-pin TQFP has 0.5 mm pitch, requiring fine-pitch PCB layout with 4 mil traces and 4 mil spaces typical. Use a 4-layer PCB with continuous ground plane beneath the device to control impedance and provide thermal dissipation. Estimated: at 100 percent resource utilization the device may dissipate 0.5 W to 1 W; an exposed copper pour of at least 1 square inch on top and bottom layers is recommended for thermal relief.
Do not apply 5 V to I/O pins when VCCIO is 3.3 V; the absolute-maximum VCCIO + 0.5 V or 4.0 V limit applies. Per the MAX 7000A datasheet, inputs above this limit will forward-bias ESD clamp diodes and may damage the device. For mixed-voltage designs, use external bus switches or level translators. Also avoid leaving user I/O floating; unused pins should be configured as outputs driving low to minimize supply current.
Compliance Information
RoHS compliant per Intel/Altera product page (lead-free, -N suffix). Not AEC-Q100 qualified - the MAX 7000A family does not offer an automotive-temp variant. Conflict-minerals compliant per Intel CMRT filings.
