EPM7256EGC192-20

The EPM7256EGC192-20 is an Altera (now Intel) EPM CPLD device. It’s a non-volatile, 5V-tolerant programmable logic device intended for glue logic and small control circuits.
Key points:
- Package and speed: 192-pin EGC package; -20 speed grade (typical around 20 ns).
- Logic capacity: about 256 macrocells, suitable for implementing sequential and combinational logic, state machines, and simple interfaces.
- I/O: multiple programmable I/O pins, generally TTL/CMOS compatible; designed for 5V operation in classic EPM parts.
- Configuration: onboard non-volatile memory stores the programmed logic; configuration is loaded at power-up.
- Programming and tools: programmed with Altera programming tools (older generations such as MAX+PLUS II or Quartus, depending on era) using programmers like ByteBlaster or in-system programming.
- Use cases: microcontroller interfacing, glue logic, simple state machines, timing and control logic.
- Notes: this is an older CPLD family; for new designs consider modern CPLDs/FPGAs with updated tooling and availability.
For exact electrical specs and pinout, consult the EPM7256EGC192-20 datasheet.

EPM7256EGC192-20 features (concise):
- MAX II family CPLD with ~72 macrocells (EPM7256)
- 192-pin TQFP package (device: EPM7256EGC192-20)
- -20 speed grade (fastest available for this device)
- 3.3V operation; standard I/O via multiple banks and global clock network
- In-system programmable (ISP) via JTAG; configuration from external serial ROM/PROM (e.g., EPCQ/EPCS)
- JTAG boundary-scan for programming and testing
- Dedicated global clock buffers and fast carry chains for arithmetic/logical ops
- Low-power operation; suitable for commercial temperature range
- Single-chip CPLD with configurable logic and I/O
Note: exact I/O counts and tolerance vary by bank/pin; refer to the datasheet for detailed bank I/O standards and voltage ranges.

192-pin Plastic Quad Flat Pack (PQFP), RoHS-compliant package; speed grade -20.

- Pin count: 192 pins (TQFP-192 package).
- Function: An EEPROM-based EPLD from the Altera EPM7256 family (256 macrocell device) used as a programmable logic device for implementing combinational and sequential logic with non-volatile configuration; speed grade -20 ns.

Manufacturer: Altera Corporation (now part of Intel Corporation).
About the company: A semiconductor company that designs and manufactures programmable logic devices, including CPLDs and FPGAs (Altera was acquired by Intel in 2015 and is now under Intel’s Programmable Solutions Group).