EPM3512AQI208-7 - MAX 3000A CPLD, 512 Macro Cells, 208-PQFP | Altera
MPN: EPM3512AQI208-7 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.95 | $1,395.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.85 | $9,850.00 |
Drop-in alternatives for EPM3512AQI208-7 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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EPM3512AQI208-10N
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View Datasheet βEPM3512AQC208-10N
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View Datasheet βEPM3512AQI208-7 Maximum Ratings & Electrical Characteristics
| Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Usable Gates | 10,000 |
| Macro Cells | 512 |
| Logic Array Blocks (LABs) | 16 |
| Maximum Operating Frequency | 116.3 MHz |
| Speed Grade | -7 |
| Core Supply Voltage (VCCINT) | 3.3 V |
| I/O Supply Voltage (VCCIO) | 2.5 V / 3.3 V / 5.0 V |
| Programmability | Non-volatile, in-system programmable (IEEE Std. 1532) |
| JTAG Support | Yes (IEEE 1149.1 boundary scan + ISP) |
| Package | 208-pin PQFP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) |
| Lead-Free / RoHS | Compliant per Altera product page |
EPM3512AQI208-7 Pin Configuration
| Pin 1 | I/O β User I/O pin (function assigned by design) |
| Pin 2 | I/O β User I/O pin |
| Pin 3 | I/O β User I/O pin |
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| Pin 11 | GND β Ground |
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| Pin 20 | I/O β User I/O pin |
| Pin 21 | VCCIO β I/O supply voltage (2.5 V / 3.3 V / 5.0 V) |
| Pin 22 | I/O β User I/O pin |
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| Pin 33 | GND β Ground |
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| Pin 45 | VCCINT β Core supply voltage (3.3 V) |
| Pin 46 | I/O β User I/O pin |
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| Pin 56 | GND β Ground |
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| Pin 69 | VCCIO β I/O supply voltage (2.5 V / 3.3 V / 5.0 V) |
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| Pin 80 | GND β Ground |
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| Pin 93 | VCCINT β Core supply voltage (3.3 V) |
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| Pin 104 | GND β Ground |
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| Pin 117 | VCCIO β I/O supply voltage (2.5 V / 3.3 V / 5.0 V) |
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| Pin 128 | GND β Ground |
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| Pin 141 | VCCINT β Core supply voltage (3.3 V) |
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| Pin 152 | GND β Ground |
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| Pin 164 | I/O β User I/O pin |
| Pin 165 | VCCIO β I/O supply voltage (2.5 V / 3.3 V / 5.0 V) |
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| Pin 176 | GND β Ground |
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| Pin 188 | I/O β User I/O pin |
| Pin 189 | VCCINT β Core supply voltage (3.3 V) |
| Pin 190 | I/O β User I/O pin |
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| Pin 200 | GND β Ground |
| Pin 201 | I/O β User I/O pin |
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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
EPM3512AQI208-7 is suitable for 6 applications: Industrial Control Glue Logic, Legacy Microprocessor Address Decoding, Multi-Rail Power Supply Sequencing, ASIC Emulation and Prototyping, Peripheral Expansion in Embedded Systems, Bus Arbitration and DMA Control.
Industrial Control Glue Logic
The EPM3512AQI208-7 is ideal for industrial glue-logic applications where deterministic timing and instant-on non-volatile configuration matter. Its 512 macro cells provide ample capacity for address decoding, peripheral chip-select generation, and interrupt aggregation in PLC and motor-drive systems. The 116.3 MHz fCNT and ~7.5 ns tPD allow the CPLD to keep pace with 32-bit microcontrollers while the 3.3 V core and 5 V-tolerant I/O simplify interfacing to legacy industrial buses. Unlike an FPGA, the MAX 3000A configuration is retained without external boot memory, which is critical for factory automation systems that must boot deterministically after power-on. The PQFP-208 package also supports socketed prototyping for in-field reconfiguration of legacy controllers.
Recommended
Legacy Microprocessor Address Decoding
The EPM3512AQI208-7 excels at address decoding and bus interfacing for legacy 8/16/32-bit microprocessors such as 8051, 68k, and x86 embedded systems. With 512 macro cells, designers can implement full address decoding for memory-mapped peripherals, chip-select generation, and wait-state insertion in a single device, eliminating 6-10 discrete TTL/CMOS packages. The PQFP-208 footprint provides enough user I/O (typically 164+ signals) to support 24-bit address buses plus chip-select outputs. Compared with discrete 74LS/74HC logic, the CPLD reduces board area and improves signal integrity by centralizing decode logic on a single device with controlled output slew rates. Industrial temperature grade (-40C to +85C) suits outdoor and factory-floor equipment.
Recommended
Multi-Rail Power Supply Sequencing
The EPM3512AQI208-7 is widely used for power-supply sequencing in multi-rail systems where processors, FPGAs, or ASICs require specific rail-on and rail-off ordering. Its 3.3 V core plus 5 V-tolerant I/O let the CPLD monitor upstream power-good signals and gate downstream regulators via ENABLE or PGOOD pins. With 116.3 MHz performance, the CPLD responds to fault conditions within microseconds - faster than discrete RC timing networks. The 512 macro cells accommodate sequencing logic for 6-12 rails, while the non-volatile configuration means sequencing behavior is correct on the very first power-on cycle, before any firmware loads. This is essential for ASICs and microprocessors that latch-up if rails are applied in the wrong order.
Recommended
ASIC Emulation and Prototyping
The EPM3512AQI208-7 serves as a prototyping vehicle for ASIC emulation, especially for designs originally targeting MAX 3000A silicon. Engineers can validate state machines, bus interfaces, and glue logic before committing to mask charges. With 10,000 usable gates and 512 macro cells, it accommodates medium-complexity ASIC functions and provides real-world timing validation. The PQFP-208 package can be socketed on a test board, allowing rapid iteration as the design is refined. The non-volatile EPROM-based configuration means the prototype works without boot memory - a major advantage over SRAM-based FPGAs that need a configuration PROM. The IEEE Std. 1532 ISP interface lets engineers re-program the device in seconds via JTAG.
Recommended
Peripheral Expansion in Embedded Systems
The EPM3512AQI208-7 is well suited to expanding I/O and peripheral count in microcontroller-based embedded systems. It can implement UARTs, SPI masters, I2C controllers, PWM generators, and custom parallel interfaces without consuming the microcontroller's firmware cycles. With 512 macro cells and 116.3 MHz performance, the CPLD handles multiple peripheral functions simultaneously, offloading real-time tasks from the MCU. The 5 V-tolerant I/O is invaluable when interfacing to legacy industrial peripherals that still use 5 V signaling. Engineers frequently use the device to add SD card controllers, LCD interfaces, or quadrature decoders to low-pin-count microcontrollers like the 8051 or PIC families.
Recommended
Bus Arbitration and DMA Control
The EPM3512AQI208-7 is commonly deployed for bus arbitration and DMA control in multi-master systems, where two or more bus masters (CPU, DMA controller, secondary processor) compete for shared memory or peripheral access. Its deterministic ~7.5 ns tPD provides predictable arbitration latency - critical for real-time systems where bus contention must be resolved in a known number of cycles. The 512 macro cells can implement multi-level priority encoders, bus-bridge logic, and timing-state machines in a single device. The 5 V-tolerant I/O bridges between 3.3 V cores and 5 V legacy peripherals, while the PQFP-208 footprint offers enough I/O for 32-bit data buses plus control signals. The non-volatile configuration ensures correct bus behavior from power-on, before any software is loaded.
Recommended
Recommended Products Summary
Engineering reference data for EPM3512AQI208-7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3512AQI208-10N | EPM3512AQI208-10 | EPM3512AQC208-7N | EPM3512AQC208-7 | EPM3512AQC208-10N | EPM3512AQC208-10 |
|---|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Macro Cells | 512 | 512 | 512 | 512 | 512 | 512 | 512 |
| Usable Gates | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 |
| Maximum Frequency | 116.3 MHz | ~92 MHz | ~92 MHz | 116.3 MHz | 116.3 MHz | ~92 MHz | ~92 MHz |
| Speed Grade | -7 | -10 | -10 | -7 | -7 | -10 | -10 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Pin-to-Pin Drop-In | Reference | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Fastest -7 speed grade within MAX 3512 family (vs EPM3512AQI208-10N)
- Industrial temperature range (-40C to +85C) (vs EPM3512AQC208-7)
- Non-volatile EPROM-based configuration (vs SRAM-based FPGAs (Cyclone, etc.))
Design Notes
The EPM3512AQI208-7 requires both a 3.3 V VCCINT rail and a separate VCCIO rail (which can be 2.5 V, 3.3 V, or 5.0 V). Place a 0.1 uF decoupling capacitor within 5 mm of every VCCINT and VCCIO pin, plus a single 10 uF bulk capacitor per rail. Power-up sequencing is not strictly required for the MAX 3000A, but holding JTAG TCK low during power ramp prevents accidental ISP. Estimated: ICCINT quiescent current is approximately 30-50 mA depending on logic utilization; design the 3.3 V regulator for at least 200 mA headroom.
The 208-pin PQFP package has a 0.5 mm lead pitch and gull-wing leads. For prototype boards use a PQFP-208 socket (e.g., 3M Textool or equivalent) to allow rapid device swaps. For production soldering, use a reflow profile with peak temperature 245-250C and ensure solder paste stencil aperture is 0.4 mm wide for proper fillet formation. Route high-speed outputs (clock, JTAG TCK) with 50 ohm controlled impedance and keep traces shorter than 50 mm to avoid ringing. Estimated: signal integrity margins degrade for traces above 50 mm at 116 MHz toggle rates.
Common pitfalls: (1) connecting VCCIO to the wrong voltage - the part is 5 V-tolerant on I/O when VCCIO = 3.3 V but NOT when VCCIO = 2.5 V. (2) Forgetting the JTAG pull-up resistor on TDI and TMS - these pins require 10 kohm pull-ups to VCCIO for reliable ISP. (3) Driving JTAG TCK faster than 10 MHz during ISP - the IEEE Std. 1532 interface limits TCK to 10 MHz for in-system programming. (4) Using the MAX 3000A in a new design without considering MAX II / MAX V migration - the family is NRND.
For designs that toggle multiple I/O pins simultaneously (e.g., address bus decoding on a 32-bit bus), enable the MAX 3000A's slow slew-rate option in Quartus to reduce ground bounce. Place series termination resistors (22-33 ohm) on outputs driving more than 50 mm of trace or more than 2 loads. The IEEE Std. 1532 JTAG chain must be terminated at the end-of-chain TDO pin with a 4.7 kohm pull-up to VCCIO. Estimated: ground bounce on 16 simultaneous switching outputs can reach 0.8 V without slew-rate control, which may corrupt logic on adjacent inputs.
Compliance Information
RoHS compliant per Altera/Intel product page. MAX 3000A family is mature silicon; not AEC-Q100 qualified (use MAX V or Cyclone for automotive). Halogen-free status not explicitly stated in distributor data.
