When Failure is Not an Option: The Evolution of Fail-Safe Actuators.

Nov 18, 2016

EPROM or Erasable Programmable Read Only Memory is rewritable memory chip that can hold its data without power. A programmed EPROM can keep its data for up to twenty years and can be read indefinite number of times. An Israeli engineer, Dov Frohman invented the EPROM chip in 1971.

EPROM or Erasable Programmable Read Only Memory is rewritable memory chip that can hold its data without power.


1. For reprogramming

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.

2. Some microcontrollers

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.

3. Forerunners

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.


Denver, CO • 2012

New York, NY • 2002

Chicago, IL • 2000

Denver, CO • 2012

New York, NY • 2002

Chicago, IL • 2000

Denver, CO • 2012

New York, NY • 2002

Chicago, IL • 2000

Some microcontrollers, before the era of EEPROMs and flash memory, used EPROM to store their program. Such microcontrollers include some versions of the Intel 8048, and the “C” edition of the PIC microcontroller.

EPROM or Erasable Programmable Read Only Memory is rewritable memory chip that can hold its data without power. A programmed EPROM can keep its data for up to twenty years and can be read indefinite number of times. An Israeli engineer, Dov Frohman invented the EPROM chip in 1971.

Similar to EPROM chips, such microcontrollers came in windowed (expensive) versions that were handy for debugging and program development. Leaving the die of such a chip exposed to sunlight can change its behavior in unexpected ways.

Some microcontrollers, before the era of EEPROMs and flash memory, used EPROM to store their program. Such microcontrollers include some versions of the Intel 8048, and the “C” edition of the PIC microcontroller.

EPROM or Erasable Programmable Read Only Memory is rewritable memory chip that can hold its data without power. A programmed EPROM can keep its data for up to twenty years and can be read indefinite number of times. An Israeli engineer, Dov Frohman invented the EPROM chip in 1971.

“Some microcontrollers, before the era of EEPROMs and flash memory, used EPROM to store their program.”

Similar to EPROM chips, such microcontrollers came in windowed (expensive) versions that were handy for debugging and program development. Leaving the die of such a chip exposed to sunlight can change its behavior in unexpected ways.

1. For reprogramming

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.

2. Some microcontrollers

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.

3. Forerunners

The chip is extracted from the circuit board, the tape is detached and it is placed below a concentrated ultraviolet (UV) light of wavelength 235nm light for approximately 20 minutes.