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Showing Results For: EPROM

EPROM

EPROM is abbreviated as Erasable Programmable Read-Only Memory. EPROM is a type of power chip that keeps its data despite having no power supply. They can easily store and erase the data and then recover it using Ultraviolet rays. The UV light helps to clear the data on the chip so that it can be later reprogrammed easily. But to write and erase data on an EPROM, you would need a particular type of device PROM programmer. The process of programming in EPROM is mainly referred to as BURNING, and the box into which it is plugged is known as an EPROM burner. 

EPROM is a non-volatile memory and was developed by Dov Frohman in 1971 at intel. When an EPROM is programmed, it can retain its data for a minimum of 10 to 20 years. A clear quartz crystal window at the top of the EPROM permits the UV light to erase the data. But you always need to be careful because an excessive amount of data erasing can damage the silicon dioxide layer, and the use of a chip becomes unreliable. Once programmed, it cannot be electrically reversed.

Applications of EPROM

An EPROM was developed to replace ROM and PROM and overcome their disadvantages. Nowadays, EPROM chips are not commonly used in computers, and EPROM memory chips have replaced them. For the mass volume of product parts, mask-programmed ROMs are the minimum cost products to use. However, many weeks of lead time are required to manufacture them. It takes a long time because the artwork for an IC mask layer must be altered so that data can be stored on the ROMs. In earlier days, it was always thought that EPROM would be highly expensive to produce and that it would be restricted to development only. It was soon discovered that small mass production was less costly with EPROM parts, specifically when the benefit of quick upgrades of firmware was considered.

Before the times of EEPROMs and flash memory, some microcontrollers used an on-chip EPROM to store their program data. These microcontrollers may consist of the versions of the intel 8048, the Freescale 68HC11, and the "C" versions of the PIC microcontroller. Like EPROM chips, such microcontrollers came in expensive versions mainly for program development and debugging. The same chip could be available in opaque OTP packaging for production, which was cheaper than the former type. When you leave the dye of such a chip exposed to light, it can change the behavior in surprising ways when it is being shifted from a windowed part for development to a non-windowed part used for production. The windowed version is the expensive one, while the non-windowed version is the less expensive option.

Advantages of EPROM

  • EPROM is cost-effective because of which it can be used in mass production.
  • It can effectively be used for programming.
  • An EPROM is highly convenient for debugging and testing.
  • In EPROM, no external memory is needed.
  • An EPROM can retain its data even without the supply of power.

Differences between EPROM and EEPROM

  • First of all, EPROM stands for Erasable Programmable Read-Only Memory, and EEPROM stands for Electrically Erasable Programmable Read-Only Memory.
  • In EPROM, the data is erased by using UV light, while in EEPROM, it is erased electrically.
  • You need to remove the EPROM chip from the computer to erase the data and reprogram it, while for EEPROM, there is no such need.

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Maxim Integrated
Rohs Verified
DS2505+, Maxim Integrated
15177 In Stock
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5 +
£ 1.75
Maxim Integrated
Rohs Verified
DS2502P-E48+, Maxim Integrated
262 In Stock
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120 +
£ 3.12
240 +
£ 3.09
480 +
£ 3.04
Rohs Verified
AT27LV010A-70JU, Microchip
62 In Stock
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32 +
£ 2.73
128 +
£ 2.63
Rohs Verified
AT27C1024-70JU, Microchip
4 In Stock
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2 +
£ 3.19
10 +
£ 3.12
24 +
£ 3.02
Rohs Verified
AT27C512R-70JU, Microchip
1818 In Stock
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5 +
£ 2.07
25 +
£ 2.01
100 +
£ 1.93
Rohs Verified
AT27C1024-45PU, Microchip
45 In Stock
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2 +
£ 3.73
10 +
£ 3.64
24 +
£ 3.55
Microchip
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AT27C040-70PU, Microchip
40 In Stock
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2 +
£ 8.61
Rohs Verified
AT27C512R-45PU, Microchip
168 In Stock
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5 +
£ 2.27
25 +
£ 2.20
100 +
£ 2.12
Microchip
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AT27C040-90PU, Microchip
2 In Stock
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2 +
£ 8.58
Rohs Verified
DS2502R+T&R, Maxim
6057 In Stock
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3000 +
£ 0.92
Rohs Verified
AT27C256R-45JU, Microchip
75 In Stock
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5 +
£ 2.11
25 +
£ 2.04
100 +
£ 1.97
Rohs Verified
AT27C4096-90JU, Microchip
77 In Stock
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1 +
£ 7.21
25 +
£ 7.00
100 +
£ 6.74
Rohs Verified
AT27C512R-70PU, Microchip
80 In Stock
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5 +
£ 2.43
25 +
£ 2.36
100 +
£ 2.27
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AT27C256R-45PU, Microchip
198 In Stock
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5 +
£ 2.06
25 +
£ 2.00
100 +
£ 1.93
Rohs Verified
AT27C512R-45JU, Microchip
178 In Stock
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5 +
£ 2.14
25 +
£ 2.07
100 +
£ 2.00
Microchip
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AT27C020-55JU, Microchip
192 In Stock
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2 +
£ 3.27
10 +
£ 3.19
24 +
£ 3.11
Microchip
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AT27C020-90PU, Microchip
112 In Stock
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2 +
£ 4.05
Microchip
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AT27C040-70JU, Microchip
40 In Stock
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2 +
£ 6.79
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AT27C4096-90PU, Microchip
433 In Stock
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£ 6.78
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£ 6.58
100 +
£ 6.34
Rohs Verified
AT27LV512A-90JU, Microchip
190 In Stock
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32 +
£ 2.24
128 +
£ 2.17
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AT27C1024-45JU, Microchip
4 In Stock
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2 +
£ 3.25
10 +
£ 3.17
24 +
£ 3.07
Microchip
Rohs Verified
AT27C040-90JU, Microchip
42 In Stock
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2 +
£ 6.63
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AT27C2048-55JU, Microchip
25 In Stock
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27 +
£ 4.36
108 +
£ 4.19
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AT27C256R-70PU, Microchip
643 In Stock
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£ 1.99
25 +
£ 1.93
100 +
£ 1.86
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AT27C1024-70PU, Microchip
6 In Stock
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2 +
£ 3.36
10 +
£ 3.28
24 +
£ 3.18
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New Items
New items
AT27C020-90JU, Atmel

AT27C020-90JU, Atmel

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
DS1982-F3+, Maxim

DS1982-F3+, Maxim

1-Wire and iButton devices The iButton is a computer chip enclosed in a 17mm diameter stainless steel can. Because of this unique and durable container, up-to-date information can travel with a person or object anywhere they go. It can be mounted anywhere because it is rugged enough to withstand harsh environments, indoors or outdoors. It is small and portable enough to attach to a key fob, ring, watch or other personal items. It can be used daily for applications such as access control to buildings and computers, asset management, and various data logging tasks.
New items
AT27LV010A-70JU, Microchip

AT27LV010A-70JU, Microchip

The Microchip AT27LV010A is a high-performance, low-power, low-voltage 1-megabit One Time Programmable EPROM organized as 128-Kbit x 8. 1-Mbit (128-Kbit x 8) Dual voltage range operation: Low voltage, 3.0V to 3.6V, or Standard power supply range, 5V +/-10% Low-power CMOS operation: 20 μA max standby (less than 1 μA, typical) for VCC = 3.6V 29 mW max active at 5 MHz for VCC = 3.6V Parallel Interface: 70 ns access time High-reliability CMOS technology: 2,000V ESD protection 200 mA latchup immunity Rapid programming algorithm – 100 μs/byte (typical) CMOS and TTL compatible inputs and outputs: Integrated product identification code Industrial Temperature Range: -40°C to 85°C Available in Green (Pb/Halide-free) Packaging Only 32-lead, Plastic J-leaded Chip Carrier (PLCC)
New items
AT27C1024-70JU, Microchip

AT27C1024-70JU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
AT27C512R-70JU, Microchip

AT27C512R-70JU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
AT27C1024-45PU, Microchip

AT27C1024-45PU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
DS2502S+, Maxim Integrated
New items
DS2502P-E48+T&R, Maxim Integrated
New items
AT27C080-90PU, Microchip

AT27C080-90PU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
AT27C040-70PU, Microchip

AT27C040-70PU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
AT27C512R-45PU, Microchip

AT27C512R-45PU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
New items
AT27C040-90PU, Microchip

AT27C040-90PU, Microchip

EPROM (One Time Programmable), Atmel EPROM OTP (One Time Programmable) These EPROM (Erasable Programmable Read-Only Memory) devices contain the same chips and are programmed in the same way as their UV-eraseable counterparts. However as the package contains no window, they cannot be erased and re-programmed.
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like EPROM and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding EPROM or any other product.
This depends on the EPROM individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for EPROM and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including EPROM.
Yes. We keep updating our stock frequently and if a product like EPROM is not in stock then we will let you know.