EPC2TC32

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Memory Configuration PROMs (Programmable Read-Only Memory) are used to initialize FPGAs (Field Programmable Gate Arrays) during power up and hence are vital to the correct functioning of most FPGAs. EPC2TC32, a 32-bit memory configuration PROM, is very popular for FPGA applications.

EPC2TC32 is an ultra-low power nonvolatile memory that is part of the Atmel range of products. It provides 32K bits of memory organized as 256 rows of 128-bits each. It is available in various packages from a small 8-pin SOIC (Small Outline Integrated Circuit) to a 64-pin PGA (Plugged Gate Array). Such flexibility allows the EPC2TC32 to be used for a wide range of applications.

Since there are only eight address lines and eight data lines on the 8-pin package, the read and write operations have to be carefully planned out. To further reduce the number of lines required, Atmel has also included a Disable Data Load pin on all its packages. This pin will disable data loading on all address locations and hence reduces the number of data pins required down to just 4.

In terms of operating voltage, the EPC2TC32 can be run on either a 2.5 to 2.7V or a 3.3V supply, making it suitable for both lower voltage and higher voltage designs. Another feature associated with the EPC2TC32 is the fact that it does not require an external clock and uses CMOS logic rather than Non-Volatile Memory (NVM) cells.

The working principle of the EPC2TC32 is quite simple. The memory chip contains an internal register and a data array. The data array is used to store the actual configuration data. When a read or write cycle is requested, the address lines are used to select the required location in the data array. The data is then read from or written to the register. Since both the register and the data array are in the same memory chip, no additional chips needs to be added to the system.

The EPC2TC32 has many applications, but one of its primary uses is as a memory configuration PROM for FPGAs. The configuration data is stored on the configuration PROM and the FPGA reads the data during system start-up and configures itself accordingly.

Since the EPC2TC32 is ultra-low power, it can be used in low-power applications such as wearable or portable devices. Its small package size and its support for both 2.5V and 3.3V supply voltage also makes it ideal for applications where space is at a premium. Additionally, its nonvolatility ensures that the configuration data will be retained even when power is removed.

In conclusion, EPC2TC32 is an excellent choice for FPGA applications with its low power, small package size, support for both 2.5V and 3.3V operation, and nonvolatility. Its price-performance ratio also makes it attractive to engineers seeking to optimize their system cost.

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