EPM9320ALI84-10

The EPM9320ALI84-10 is an Altera (now Intel) CPLD in the EPM family. It’s a small/medium-density programmable logic device used for glue logic, simple state machines, decoders, and I/O interfacing in digital systems.
Key points
- Architecture: Macrocell-based CPLD with programmable logic blocks and flip-flops; supports synchronous and some asynchronous logic.
- Package and voltage: Typically comes in an 84-pin package (ALI84) and operates at a 3.3V logic level.
- Speed grade: -10 (approximate 10 ns class timing).
- Programming: Configured in-system or offline via JTAG using Altera/Intel Quartus Prime (older Quartus II) tools; programming hardware commonly via USB-Blaster or similar programmers.
- Use cases: Glue logic, small FSMs, address/decoding, interface logic in embedded or custom hardware projects.
Note
- It’s an older device family. For exact specs (macrocells, I/O count, voltage tolerances, timing), consult the official datasheet for EPM9320ALI84-10.
- If starting a new design, consider newer CPLDs or FPGAs unless you specifically need the EPM9320 family’s characteristics.

Here are the typical features of the EPM9320ALI84-10 (Altera EPM9320AL family CPLD):
- 84-pin EPLD/CPLD device in the EPM9320AL I84 package
- High-density CPLD with macrocell-based logic
- Speed grade: -10 ns (fast device)
- In-system programmable (ISP) via JTAG and AS programming
- Non-volatile configuration suitable for standalone operation
- Flexible I/O resources across macrocell banks for configurable I/O behavior
- Suitable for glue logic, decoding, state machines, and simple interfacing tasks
- General-purpose digital logic with low external component count
Note: exact I/O counts, voltage ranges, and temperature specs vary by exact package and revision. For precise specifications, consult the official datasheet.

84-pin Thin Quad Flat Pack (TQFP). The “84” indicates 84 leads; EPM9320ALI84-10 is in an 84‑lead TQFP package.

- Pin count: 84 pins (84-pin TQFP package)
- Function: Altera EPM9320AL… is a CPLD (Complex Programmable Logic Device) with 32 macrocells for implementing configurable logic (glue logic, simple state machines, I/O interfacing, etc.).

- Manufacturer: Altera Corporation (now part of Intel).
- What kind of company: A semiconductor company that designs and sells programmable logic devices (PLDs), including CPLDs and FPGAs.

Typical applications for EPM9320ALI84-10 (CPLD):
- Glue logic for microprocessor/microcontroller systems
- Address decoding and memory-mapped I/O
- Finite state machines and timing/sequencing
- Peripheral interfaces and bus bridging (SPI, I2C, UART, parallel I/O)
- Clock management, counters, timers
- Display drivers and simple I/O expansion
- Prototyping and rapid embedded-system development