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A typical PROM device is made up of an array of memory cells, each made up of a transistor, which is a bipolar transistor, connected to a fuse called a polyfuse in the emitter of the transistor. A PROM programmer is used to blow the polyfuse, programming the PROM. [1]
Programmable read-only memory (PROM), or one-time programmable ROM (OTP), can be written to or programmed via a special device called a PROM programmer. Typically, this device uses high voltages to permanently destroy or create internal links (fuses or antifuses) within the chip. Consequently, a PROM can only be programmed once.
EEPROM or E 2 PROM (electrically erasable programmable read-only memory) is a type of non-volatile memory. It is used in computers, usually integrated in microcontrollers such as smart cards and remote keyless systems, or as a separate chip device, to store relatively small amounts of data by allowing individual bytes to be erased and reprogrammed.
An EPROM (rarely EROM), or erasable programmable read-only memory, is a type of programmable read-only memory (PROM) chip that retains its data when its power supply is switched off. Computer memory that can retrieve stored data after a power supply has been turned off and back on is called non-volatile.
In the context of installing firmware onto a device, a programmer, device programmer, chip programmer, device burner, [1]: 364 or PROM writer [2] is a device that writes, a.k.a. burns, firmware to a target device's non-volatile memory.
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The programmable logic plane is a programmable read-only memory (PROM) array that allows the signals present on the device pins, or the logical complements of those signals, to be routed to output logic macrocells.