68 MASK ROM 6

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Part	Manufacturer	Memory IC Type	Temperature Grade	No. of Terminals	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)	Alternate Memory Width	Maximum Operating Temperature	Organization	No. of Words Code	Minimum Operating Temperature	Terminal Position	JESD-30 Code	Maximum Supply Voltage (Vsup)	Qualification	Memory Density	Minimum Supply Voltage (Vsup)	Maximum Access Time
TH6M1680A0B	Toshiba	MASK ROM CARD		68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL		8388608 words		16	MICROELECTRONIC ASSEMBLY			8MX16	8M		UNSPECIFIED	X-XXMA-X68		Not Qualified	134217728 bit		150 ns
TH6M1620A0B	Toshiba	MASK ROM CARD		68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL		2097152 words		16	MICROELECTRONIC ASSEMBLY			2MX16	2M		UNSPECIFIED	X-XXMA-X68		Not Qualified	33554432 bit		150 ns
TH6M165100A	Toshiba	MASK ROM CARD		68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL		524288 words		16	MICROELECTRONIC ASSEMBLY			512KX16	512K		UNSPECIFIED	X-XXMA-X68		Not Qualified	8388608 bit		150 ns
TH6M1640A0B	Toshiba	MASK ROM CARD		68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL		4194304 words		16	MICROELECTRONIC ASSEMBLY			4MX16	4M		UNSPECIFIED	X-XXMA-X68		Not Qualified	67108864 bit		150 ns
HJ616M2PCH00-15	Renesas Electronics	MASK ROM CARD	COMMERCIAL	68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL	ASYNCHRONOUS	16777216 words	5	8	MICROELECTRONIC ASSEMBLY	16	70 Cel	16MX8	16M	0 Cel	UNSPECIFIED	X-XXMA-X68	5.5 V	Not Qualified	134217728 bit	4.5 V	150 ns
HJ604M2PCH00-15	Renesas Electronics	MASK ROM CARD	COMMERCIAL	68	UNSPECIFIED	UNSPECIFIED	NO	1	CMOS	UNSPECIFIED	PARALLEL	ASYNCHRONOUS	4194304 words	5	8	MICROELECTRONIC ASSEMBLY	16	70 Cel	4MX8	4M	0 Cel	UNSPECIFIED	X-XXMA-X68	5.5 V	Not Qualified	33554432 bit	4.5 V	150 ns

MASK ROM

Mask ROM, or Read-Only Memory, is a type of non-volatile computer memory that is programmed during the manufacturing process. Mask ROM is designed to permanently store data and cannot be reprogrammed after it has been manufactured.

Mask ROM is created by a process known as photolithography. This process involves using a mask, or template, to expose specific areas of a silicon wafer to ultraviolet light. The areas that are exposed to the light are then etched away, leaving behind the patterns that make up the memory cells. Once the memory cells have been created, they are permanently programmed with the data that they will store.

Mask ROM is commonly used in devices that require permanent storage of data, such as game consoles, calculators, and other electronic devices. Because the data is permanently programmed during manufacturing, mask ROM provides a reliable and secure way to store critical data, such as system settings, firmware, and other important information.

One of the advantages of using mask ROM is that it is a cost-effective way to produce large quantities of memory. Because the data is programmed during the manufacturing process, the cost per unit is relatively low compared to other types of non-volatile memory, such as EEPROM or flash memory.