Erasable Programmable Read-Only Memory


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erasable programmable read-only memory

[i¦rās·ə·bəl prō¦gram·ə·bəl ¦rēd ‚ōn·lē ′mem·rē]
(computer science)
A read-only memory in which stored data can be erased by ultraviolet light or other means and reprogrammed bit by bit with appropriate voltage pulses. Abbreviated EPROM.

Erasable Programmable Read-Only Memory

(storage)
(EPROM) A type of storage device in which the data is determined by electrical charge stored in an isolated ("floating") MOS transistor gate. The isolation is good enough to retain the charge almost indefinitely (more than ten years) without an external power supply. The EPROM is programmed by "injecting" charge into the floating gate, using a technique based on the tunnel effect. This requires higher voltage than in normal operation (usually 12V - 25V). The floating gate can be discharged by applying ultraviolet light to the chip's surface through a quartz window in the package, erasing the memory contents and allowing the chip to be reprogrammed.
References in periodicals archive ?
Similar devices, from such manufacturers as Xilinx and Altera, are produced with erasable programmable read-only memory (EPROM) technology, so while they can program an FPGA they cannot themselves be reconfigured.
14 /PRNewswire/ -- Atmel Corporation (Nasdaq: ATML) announced today that it has broadened its Flash-based microcontroller line with the addition of the first of a family of second-generation devices that offer in-system programmable Flash memory through a Serial Peripheral Interface (SPI) and on-chip electrically erasable programmable read-only memory (EEPROM).
The Electronically Erasable Programmable Read-Only Memory (EEPROM) process to be installed by JSI was previously operated at Raytheon Co.
In the standby mode (turned "on" and waiting to be used) the NanoPower(TM) devices in this new five-circuit, serial-interface, electrically erasable programmable read-only memory (EEPROM) family, typically require only 200 nanoamps.
Improvements made in the architecture have enabled replacement of an expensive, large footprint flash memory with an Electrically Erasable Programmable Read-only Memory (E2PROM) that results in a lower Bill of Materials costs.
23 /PRNewswire/ -- Atmel Corporation (Nasdaq: ATML) announced today that it has added the industry's first 3-volt, one-megabit electrically erasable programmable read-only memory (EEPROM) to its family of low-voltage circuits.