Samsung EPROM 3

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Technology	Terminal Form	Parallel or Serial	Operating Mode	No. of Words	Nominal Supply Voltage / Vsup (V)	Memory Width	Package Style (Meter)	Terminal Pitch	Maximum Operating Temperature	Organization	No. of Words Code	Minimum Operating Temperature	Terminal Position	JESD-30 Code	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	Additional Features	Length	Maximum Access Time
KM4232W259A-6	Samsung	UVPROM	COMMERCIAL	120	FQFP	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS	GULL WING	PARALLEL	ASYNCHRONOUS	262144 words	5	32	FLATPACK, FINE PITCH	.5 mm	70 Cel	256KX32	256K	0 Cel	QUAD	R-PQFP-G120	5.5 V	2.3 mm	14 mm	Not Qualified	8388608 bit	4.5 V	TTL COMPATIBLE I/O	20 mm	60 ns
KM4232W259A-5	Samsung	UVPROM	COMMERCIAL	120	FQFP	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS	GULL WING	PARALLEL	ASYNCHRONOUS	262144 words	5	32	FLATPACK, FINE PITCH	.5 mm	70 Cel	256KX32	256K	0 Cel	QUAD	R-PQFP-G120	5.5 V	2.3 mm	14 mm	Not Qualified	8388608 bit	4.5 V	TTL COMPATIBLE I/O	20 mm	50 ns
AM27C020-55DC500	Samsung	UVPROM	INDUSTRIAL	52	VFLGA	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS	BUTT	PARALLEL	ASYNCHRONOUS	536870912 words	3.3	8	GRID ARRAY, VERY THIN PROFILE, FINE PITCH		85 Cel	512MX8	512M	-40 Cel	BOTTOM	R-PBGA-B52	3.6 V	.65 mm	12 mm		4294967296 bit	2.7 V		17 mm	25 ns

EPROM

EPROM, or Erasable Programmable Read-Only Memory, is a type of non-volatile computer memory that can be programmed and erased multiple times. EPROM was commonly used in computer systems and electronic devices in the 1970s and 1980s, but has largely been replaced by more advanced memory technologies.

EPROM works by storing data in a grid of memory cells that can be individually programmed and erased using ultraviolet light. Each memory cell consists of a transistor and a floating gate. To program the memory cell, a high voltage is applied to the transistor, which charges the floating gate. To erase the memory cell, ultraviolet light is applied to the chip, which removes the charge from the floating gate. The programming and erasing process can be repeated multiple times, making EPROM a reprogrammable memory technology.

EPROM has several advantages over other types of computer memory, such as ROM and RAM. EPROM can be reprogrammed multiple times, which makes it a versatile and flexible memory technology. EPROM is also non-volatile, which means that it can store data even when the power is turned off. This makes it ideal for storing critical data, such as system settings and firmware.