EPM7256AETC100-5N - 256-Macro MAX 7000A CPLD, 5ns TQFP-100
MPN: EPM7256AETC100-5N ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.75 | $9,750.00 |
Drop-in alternatives for EPM7256AETC100-5N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →EPM7256AEFC100-10N
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View Datasheet →EPM7128AETC100-5N
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View Datasheet →EPM7256AETC100-5N Maximum Ratings & Electrical Characteristics
| Family | MAX 7000A |
| Series | MAX 7000AE |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macro Cells | 256 |
| Usable Gates | 5000 (range 600 to 10000) |
| User I/Os | 84 |
| Logic Array Blocks (LABs) | 16 |
| Pin-to-Pin Delay (tPD) | 5.0 ns |
| Counter Frequency (fCNT) | up to 227.3 MHz |
| Supply Voltage (VCCINT) | 3.3 V |
| MultiVolt I/O Support | 2.5 V / 3.3 V / 5.0 V |
| Package | TQFP-100 (1.0 mm pitch, 14x14 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0C to +70C (Commercial) |
| Program Memory | Internal EEPROM |
| In-System Programmability | Yes (IEEE 1149.1 JTAG) |
| RoHS Status | Compliant (lead-free) |
| MSL Level | 3 (168 hours) |
| Process Technology | CMOS, EEPROM-based |
| Security Bit | Programmable |
EPM7256AETC100-5N Pin Configuration
| Pin 1 | I/O — User I/O pin (global) |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| Pin 12 | I/O — User I/O pin |
| Pin 13 | I/O — User I/O pin |
| Pin 14 | I/O — User I/O pin |
| Pin 15 | I/O — User I/O pin |
| Pin 16 | I/O — User I/O pin |
| Pin 17 | I/O — User I/O pin |
| 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 | GND — Ground |
| Pin 22 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| 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 | GND — Ground |
| Pin 32 | I/O — User I/O pin |
| Pin 33 | I/O — User I/O pin |
| 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 | I/O — User I/O pin |
| Pin 40 | I/O — User I/O pin |
| Pin 41 | GND — Ground |
| Pin 42 | I/O — User I/O pin |
| Pin 43 | I/O — User I/O pin |
| Pin 44 | I/O — User I/O pin |
| Pin 45 | I/O — User I/O pin |
| Pin 46 | I/O — User I/O pin |
| Pin 47 | I/O — User I/O pin |
| Pin 48 | I/O — User I/O pin |
| Pin 49 | I/O — User I/O pin |
| Pin 50 | I/O — User I/O pin |
| Pin 51 | GND — Ground |
| Pin 52 | I/O — User I/O pin |
| Pin 53 | I/O — User I/O pin |
| Pin 54 | I/O — User I/O pin |
| Pin 55 | I/O — User I/O pin |
| Pin 56 | I/O — User I/O pin |
| Pin 57 | I/O — User I/O pin |
| Pin 58 | I/O — User I/O pin |
| Pin 59 | I/O — User I/O pin |
| Pin 60 | I/O — User I/O pin |
| Pin 61 | GND — Ground |
| Pin 62 | I/O — User I/O pin |
| Pin 63 | I/O — User I/O pin |
| Pin 64 | I/O — User I/O pin |
| Pin 65 | I/O — User I/O pin |
| Pin 66 | I/O — User I/O pin |
| Pin 67 | I/O — User I/O pin |
| Pin 68 | I/O — User I/O pin |
| Pin 69 | I/O — User I/O pin |
| Pin 70 | I/O — User I/O pin |
| Pin 71 | GND — Ground |
| Pin 72 | TDI — JTAG Test Data In |
| Pin 73 | TMS — JTAG Test Mode Select |
| Pin 74 | TCK — JTAG Test Clock |
| Pin 75 | TDO — JTAG Test Data Out |
| Pin 76 | I/O — User I/O pin |
| Pin 77 | I/O — User I/O pin |
| Pin 78 | I/O — User I/O pin |
| Pin 79 | I/O — User I/O pin |
| Pin 80 | I/O — User I/O pin |
| Pin 81 | I/O — User I/O pin |
| Pin 82 | I/O — User I/O pin |
| Pin 83 | I/O — User I/O pin |
| Pin 84 | I/O — User I/O pin |
| Pin 85 | GND — Ground |
| Pin 86 | I/O — User I/O pin (global clock candidate) |
| Pin 87 | I/O — User I/O pin |
| Pin 88 | I/O — User I/O pin |
| Pin 89 | I/O — User I/O pin |
| Pin 90 | I/O — User I/O pin |
| Pin 91 | I/O — User I/O pin |
| Pin 92 | I/O — User I/O pin |
| Pin 93 | I/O — User I/O pin |
| Pin 94 | I/O — User I/O pin |
| Pin 95 | GND — Ground |
| Pin 96 | VCCINT — Core supply voltage (3.3 V) |
| Pin 97 | VCCIO — I/O bank supply voltage (2.5/3.3/5.0 V) |
| Pin 98 | I/O — User I/O pin |
| Pin 99 | I/O — User I/O pin |
| Pin 100 | I/O — User I/O pin |
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
EPM7256AETC100-5N is suitable for 6 applications: PCI / ISA Bus Address Decoding, Microprocessor / Microcontroller Glue Logic, Power-Up Sequencer for Multi-Rail Boards, Asynchronous-to-Synchronous Clock Domain Bridge, State Machine and Protocol Controller, Legacy Industrial Control Replacement.
PCI / ISA Bus Address Decoding
The EPM7256AETC100-5N is a strong fit for PCI/ISA address decoding where deterministic 5.0 ns pin-to-pin delay is required to meet bus setup/hold timing. With 256 macro cells and 84 user I/Os it can decode the full 32-bit PCI address space, latch command signals, and generate chip-select outputs for multiple peripherals in a single device. Designers use the JTAG ISP interface to update decode maps in the field without removing the board from the system.
Recommended
Microprocessor / Microcontroller Glue Logic
Use the EPM7256AETC100-5N to consolidate discrete 74-series glue logic, address latches, and chip-select generators around a microprocessor or microcontroller. The 5.0 ns tPD and 227.3 MHz counter frequency handle fast interrupt acknowledge, DMA acknowledge, and wait-state generation without timing violations. MultiVolt I/O lets it bridge a 3.3 V MCU to legacy 5 V peripherals on the same board, eliminating external level shifters.
Recommended
Power-Up Sequencer for Multi-Rail Boards
The EPM7256AETC100-5N's instant-on EEPROM-based configuration makes it ideal as a power-up sequencer that holds downstream rails in reset until each supply stabilizes. The 84 user I/Os can drive power-good signals, EN lines, and reset distribution for an entire multi-rail system. Programmable macro cells implement the timing delays and AND/OR logic needed for sequencing complex FPGA + ASIC + DDR power trees.
Recommended
Asynchronous-to-Synchronous Clock Domain Bridge
Deploy the EPM7256AETC100-5N as a clock-domain bridge between an asynchronous peripheral bus and a synchronous processor core, where its deterministic timing guarantees clean handshake and metastability containment. The MAX 7000A architecture offers dedicated input registers with sub-5 ns setup/hold times, simplifying CDC design and easing STA closure. Up to 84 I/Os allow multiple FIFO-style handshake channels on one device.
Recommended
State Machine and Protocol Controller
Implement custom state machines, protocol bridges (I2C/SPI/UART muxes), and timing-critical controllers in the EPM7256AETC100-5N. Its 256 macro cells and 227.3 MHz counter frequency handle complex FSMs and baud-rate generators with deterministic latency. JTAG-based ISP allows field firmware updates for evolving protocols without hardware rework, and the programmable security bit protects the design IP.
Recommended
Legacy Industrial Control Replacement
The EPM7256AETC100-5N is the canonical CPLD for maintaining legacy industrial control boards where original MAX 7000A parts have failed and cannot be re-ordered. Its 5.0 ns tPD and 256 macro cells preserve timing budgets on the original PCB without any layout change. The 0C to +70C commercial grade fits indoor cabinet environments; for outdoor or factory-floor installations, migrate to the EPM7256AETI100-7N industrial variant instead.
Recommended
Recommended Products Summary
Engineering reference data for EPM7256AETC100-5N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7256AETC100-5C | EPM7256AETC100-10N | EPM7256AETI100-7N | EPM7256AEFC100-7 | EPM7128AETC100-5N |
|---|---|---|---|---|---|---|
| Package | TQFP-100 | TQFP-100 | TQFP-100 | TQFP-100 | TQFP-100 | TQFP-100 |
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Family | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000A |
| Macro Cells | 256 | 256 | 256 | 256 | 256 | 128 |
| Pin-to-Pin Delay (tPD) | 5.0 ns | 5.0 ns | 10.0 ns | 7.5 ns | 7.0 ns | 5.0 ns |
| Counter Frequency | 227.3 MHz | 227.3 MHz | 125 MHz | 148 MHz | 155 MHz | 227.3 MHz |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) |
| RoHS / Lead-Free | Yes (lead-free) | No (leaded) | Yes (lead-free) | Yes (lead-free) | Yes (lead-free) | Yes (lead-free) |
Key Differentiators
- Fastest 5.0 ns pin-to-pin delay in MAX 7000A TQFP-100 family (vs EPM7256AETC100-10N)
- Commercial temperature grade at lower cost than industrial variants (vs EPM7256AETI100-7N)
- Lead-free RoHS-compliant finish versus legacy leaded process (vs EPM7256AETC100-5C)
Design Notes
The EPM7256AETC100-5N requires a clean 3.3 V VCCINT supply; place at least one 0.1 uF decoupling capacitor within 5 mm of every VCCINT and VCCIO pin and a single 10 uF bulk tantalum or ceramic capacitor near the package. According to the MAX 7000A datasheet, the VCCIO banks can be powered at 2.5 V, 3.3 V, or 5.0 V independently, but the VCCINT core must remain at 3.3 V ±5% for proper EEPROM programming. Inrush during ISP programming can spike Icc; ensure the upstream regulator has at least 200 mA headroom above the device's typical 150 mA Icc.
The 100-pin TQFP uses a 0.5 mm lead pitch with a 14x14 mm body; recommended PCB land pattern follows IPC-7351 nominal-density TQFP with 0.27 mm wide pads and 0.55 mm pitch. Place a continuous ground plane on the layer directly beneath the device to reduce EMI, and route all JTAG signals (TDI/TDO/TMS/TCK) as a daisy-chained group with 33 ohm series-termination resistors near the driver to suppress ringing. Leave at least 2 mm of clearance around the package for inspection and rework.
When using the EPM7256AETC100-5N at the -5 speed grade with signals above 100 MHz, treat all outputs as transmission lines and use series-termination resistors matched to the line impedance (typically 22-33 ohm for 50 ohm traces). The device does not include internal output slew-rate control, so high-frequency designs should select slow-slew-rate mode in the Quartus Assignment Editor to reduce ground bounce on the 3.3 V plane. Keep global clock pins dedicated; routing clocks through regular I/O pins will increase jitter beyond the datasheet spec.
Do not confuse the EPM7256AETC100-5N (commercial grade) with the EPM7256AETI100-7N (industrial grade) - they share the same TQFP-100 footprint but differ in temperature range and speed grade. Avoid driving 5 V signals into a VCCIO bank powered at 3.3 V; the MultiVolt I/O is tolerant of higher VCCIO, not higher VIN than VCCIO. When programming via JTAG, ensure the ByteBlaster or USB-Blaster cable shares a common ground with the target board, otherwise ISP will fail intermittently with boundary-scan errors.
Compliance Information
RoHS compliant per the -N suffix lead-free designation. Not AEC-Q100 qualified (commercial/industrial grades only - automotive designers should evaluate MAX V or MAX 10 with explicit automotive grades). Halogen-free status not explicitly stated in the verified data.
