EPM7128STC100-10 - 128-Macro MAX 7000S CPLD, 10ns TQFP-100 | Intel / Altera
MPN: EPM7128STC100-10 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
Drop-in alternatives for EPM7128STC100-10 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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EPM7128STC100-10N
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$9.3 / Unit
View Datasheet →EPM7128STC100-7N
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EPM7128STC100-15N
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$9.2 / Unit
View Datasheet →EPM7128SQC100-10N
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$14.95 / Unit
View Datasheet →EPM7128SQC100-10
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$9.85 / Unit
View Datasheet →EPM7128SQC100-15
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$8.2 / Unit
View Datasheet →EPM7128STC100-10 Maximum Ratings & Electrical Characteristics
| Family | MAX 7000S |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macro Cells | 128 |
| Usable Gates | 2,500 |
| User I/Os | 84 |
| Logic Array Blocks | 8 (16 macrocells per LAB) |
| Propagation Delay (tPD) | 10 ns |
| Internal Counter Frequency (fCNT) | 100 MHz |
| Logic Family | CMOS |
| Supply Voltage (VCCINT) | 5 V |
| MultiVolt I/O Voltage | 3.3 V / 5 V |
| Package | TQFP-100 (C100) |
| Pin Count | 100 |
| Mounting Type | Surface Mount |
| Programmability | In-System Programmable (JTAG, IEEE 1149.1), EEPROM |
| Operating Temperature | 0C to +70C (commercial) |
EPM7128STC100-10 tqfp-100 (c100) Pin Configuration Guide
Complete pinout information for EPM7128STC100-10 (tqfp-100 (c100) package) with 100 pins. 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 EPM7128STC100-10.
Refer to the datasheet for full pin configuration.
Estimated pin count: 100 pins (digital package)
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
EPM7128STC100-10 is suitable for 6 applications: Address Decoding and Chip-Select Generation, Bus-Interface Bridging and Protocol Conversion, State-Machine and Sequencer Logic, Board-Level Power-Up Sequencing, Legacy Industrial Control Retrofit, Test and Measurement Equipment Front-End.
Address Decoding and Chip-Select Generation
The EPM7128STC100-10's 128 macrocells and 84 user I/Os make it well-suited for board-level address decoding and chip-select generation in microprocessor-based systems. Its 10 ns pin-to-pin delay easily accommodates 33 MHz (30 ns) memory cycles without wait states, and its deterministic timing eliminates the variable-latency issue that plagues microcontrollers doing the same job in firmware. The device can decode full 24-bit or 32-bit address buses and produce individual chip-selects for ROM, SRAM, DRAM, peripheral registers, and dual-port memory in a single 100-pin TQFP, replacing 4-6 discrete 74LS/74F/74AS glue-logic packages. Programmable output slew-rate control reduces EMI on heavily-loaded address buses, while 3.3V/5V MultiVolt I/O permits direct interface to both 3.3V microcontrollers and 5V memory without external level shifters. The JTAG ISP allows last-minute board reconfiguration to fix address-map errors without respinning the PCB.
Recommended
Bus-Interface Bridging and Protocol Conversion
When bridging between legacy 5V peripherals and modern 3.3V controllers, the EPM7128STC100-10 provides both voltage-level translation and protocol conversion in a single device. Its 84 user I/Os can be split between 5V MultiVolt-tolerant banks and 3.3V core-logic banks, eliminating the need for external bus-switch ICs. Common applications include ISA-to-PCI bridge glue logic, UART/SCPI/SPI/I2C mux and decode, parallel-port-to-LCD converters, and PC/104-to-custom-bus adapters. The deterministic 10 ns tPD ensures that the bridge adds no jitter to interrupt or strobe signals, which is critical when emulating real-time protocols. The in-system programmability allows the same PCB to ship with multiple personality bitstreams (selected by jumper) for different peripheral sets, reducing SKU count. EEPROM storage means the bridge logic is available at power-on with no bootloader delay.
Recommended
State-Machine and Sequencer Logic
Implementing state machines in the EPM7128STC100-10 takes advantage of its 128 macrocells - enough for 30+ states in a single device, or several smaller coordinated FSMs. With 100 MHz fCNT, the CPLD can sequence complex power-up/power-down events, motor-control step sequences, or instrument-trigger waveforms without software jitter. The deterministic timing allows the state machine to run from a 50 MHz crystal and meet sub-100 ns timing margins for industrial sensor I/O. Designers appreciate that the state encoding (one-hot, binary, gray) is software-selectable in Quartus, allowing trade-offs between speed and macrocell count. The on-chip EEPROM retains state definitions across power cycles, making the part ideal for unattended remote installations where field firmware updates are impractical. Each of the 4 dedicated input pins can serve as global clock, clear, preset, or output-enable for multi-state synchronization.
Recommended
Board-Level Power-Up Sequencing
Multi-rail systems (FPGA + DDR + analog + RF) require strict power-up and power-down sequencing to prevent latch-up, inrush damage, and bus-contention failures. The EPM7128STC100-10 implements the entire sequencer in hardware, freeing the main MCU or SoC from real-time sequencing responsibility. With 10 ns propagation, the CPLD can produce sequenced enable signals with sub-microsecond delay resolution - fine enough for modern POL regulators that demand 1 ms-order staggering. Each of the 84 I/Os can directly drive a MOSFET gate or enable pin (8 mA IOL / IOH typical), eliminating buffer ICs. The JTAG ISP allows the sequencing order to be updated in the field when power-tree revisions occur, which is particularly valuable for industrial and aerospace long-life programs. The 5V core voltage tolerates noisy 24V industrial backplanes after regulation.
Recommended
Legacy Industrial Control Retrofit
Many 1990s-era industrial controllers, PLCs, and CNC front-ends use the EPM7128STC100-10 as central glue logic. For retrofit and maintenance of these machines, the CPLD provides exact functional replacement when the original part fails. The MAX 7000S architecture is well-documented in legacy Altera datasheets, and the JTAG ISP allows the same bitstream to be loaded into the device from a stored POF file. The 100-pin TQFP is straightforward to hand-rework with hot-air stations for low-volume repair shops. Industrial integrators also use this part to add modern features (USB, Ethernet) to legacy machines by routing the new peripheral signals through spare macrocells while preserving original wiring. The 5V core and TTL-compatible I/O match vintage logic without level shifting. EEPROM retention (>20 years) means the bitstream survives long field-storage intervals without battery backup.
Recommended
Test and Measurement Equipment Front-End
Test equipment (logic analyzers, protocol exercisers, ATE fixtures) uses the EPM7128STC100-10 for pattern generation, timing-and-control, and bus multiplexing. The 100 MHz fCNT supports pattern rates up to 50 MHz in half-cycle clocking, sufficient for legacy PCI, ISA, and VME bus test. The 84 user I/Os can drive or sample 8-10 channels of parallel test vectors with per-pin programmable slew rate and open-drain options. The JTAG interface enables ATE to reconfigure the test personality per DUT without manual intervention, and the deterministic timing ensures repeatable measurement results across test runs. The 5V I/O is fully TTL-compatible, simplifying fixture design for both 3.3V and 5V DUTs via MultiVolt. The on-chip EEPROM stores multiple personalities, selectable by external jumper, which is useful for board-rev A/B testing.
Recommended
Recommended Products Summary
Engineering reference data for EPM7128STC100-10 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7128STC100-10N | EPM7128STC100-7N | EPM7128STC100-15N | EPM7128SQC100-10N | EPM7128SQC100-10 | EPM7128SQC100-15 |
|---|---|---|---|---|---|---|---|
| Package | TQFP-100 | 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) | Altera (Intel) |
| Speed Grade (tPD) | 10 ns | 10 ns | 7 ns (faster) | 15 ns (slower) | 10 ns | 10 ns | 15 ns (slower) |
| Macro Cells | 128 | 128 | 128 | 128 | 128 | 128 | 128 |
| Usable Gates | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 |
| User I/Os | 84 | 84 | 84 | 84 | 84 | 84 | 84 |
| RoHS Status (Finish) | SnPb (non-RoHS) | Pb-free (RoHS) | Pb-free (RoHS) | Pb-free (RoHS) | Pb-free (RoHS) | SnPb (non-RoHS) | SnPb (non-RoHS) |
| Pin-to-Pin Compatible | Yes (reference) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Best-in-class 5V MultiVolt CPLD with 128 macrocells and 84 I/Os (vs EPM7128AETC100-10)
- Pin-compatible upgrade path to faster 7 ns grade (vs EPM7128STC100-7N)
- Same silicon available with Pb-free RoHS finish (vs EPM7128STC100-10N)
Design Notes
The EPM7128STC100-10 requires a stable 5.0V VCCINT supply with +/-5% tolerance. A bulk 100 uF tantalum plus 0.1 uF ceramic decoupling per VCC pin is the recommended starting point. Add a 10 uF ceramic close to the device for high-frequency noise suppression. VCCIO pins (if present in the bank configuration) should be tied to either 3.3V or 5V per MultiVolt requirements; do not leave floating. Estimated: ICC active current is approximately 100-300 mA depending on utilization and toggle rate; consult the MAX 7000S datasheet for ICC vs frequency curves.
The 100-pin TQFP has 0.5 mm lead pitch and requires careful PCB layout. Use 0.20 mm (8 mil) traces between pads, with via-in-pad acceptable only with proper tenting. Place all decoupling capacitors on the same PCB layer as the CPLD, within 5 mm of the corresponding VCC pins. JTAG chain signals (TCK, TMS, TDI, TDO) should be routed with matched lengths (<25 mm mismatch) and shielded with ground guard traces. The exposed thermal pad (if present on the package variant) must be soldered to a copper pour to meet theta_JA ratings.
Do not confuse the EPM7128STC100-10 (MAX 7000S, 5V core) with the EPM7128AETC100-10 (MAX 7000A, 3.3V core); the JTAG IDCODE differs and the bitstream is not interchangeable. When migrating from MAX 7000S to MAX II, regenerate the BSDL file and JTAG chain description for production testers. The 'N' suffix on the part number (EPM7128STC100-10N) indicates lead-free / RoHS finish - verify the assembly profile matches the finish (SnPb vs SAC305). Do not program the device with a MAX+PLUS II project targeting a different speed grade without recompiling.
For high-speed designs approaching the 100 MHz fCNT limit, assign clock signals to one of the four dedicated global clock input pins (GCLK0-GCLK3) to minimize skew. Distribute high-fanout signals (enables, clears) via the global network rather than regular LAB interconnects. Output slew-rate control should be set to 'slow' for heavily-loaded buses to reduce ground bounce; reserve 'fast' slew for critical timing paths. Per-pin open-drain configuration is available in the Quartus pin assignment editor and eliminates the need for external pull-up resistors on wired-OR buses.
Compliance Information
The base EPM7128STC100-10 uses SnPb (tin-lead) terminal finish and is RoHS non-compliant; the '-10N' variant is Pb-free RoHS-compliant. AEC-Q100 not applicable for commercial-grade CPLD. REACH and conflict-mineral compliance status not stated in provided data.
