Memory Management Units (MMU)

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Part	Manufacturer	Peripheral IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	Maximum Supply Voltage	No. of Addressable Pages	Address Bus Width	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Minimum Supply Voltage	Maximum Operating Temperature	Minimum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	Width	External Data Bus Width	Maximum Clock Frequency	Technology	Maximum Supply Current	Nominal Supply Voltage	Sub-Category	Bus Compatibility	Terminal Pitch	Maximum Address Translation Time	JESD-30 Code	Qualification	Low Power Mode	JESD-609 Code
MC68451L8	Motorola	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	64	DIP	RECTANGULAR	CERAMIC	NO					IN-LINE	DIP64,.9		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	DUAL					MOS			Memory Management Units		2.54 mm		R-XDIP-T64	Not Qualified		e0
MC68451R10	Motorola	MEMORY MANAGEMENT UNIT	COMMERCIAL	PIN/PEG		PGA		CERAMIC	NO					GRID ARRAY	PGA(UNSPEC)		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	PERPENDICULAR					MOS			Memory Management Units					Not Qualified		e0
TI32082WJDL-2	Texas Instruments	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		24		IN-LINE	DIP48,.6	4.75 V	70 Cel	0 Cel		DUAL			16	10 MHz	NMOS		5 V	Memory Management Units	TI32016T; TI32032T	2.54 mm	50 ns	R-CDIP-T48	Not Qualified	NO
Z8010B6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	4.06 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8015D1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	64	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V	64	16		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL			16	4 MHz	CMOS		5 V		Z8000			R-CDIP-T64	Not Qualified	NO
Z8010D2	STMicroelectronics	MEMORY MANAGEMENT UNIT	MILITARY	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	125 Cel	-55 Cel		DUAL	3.73 mm	15.24 mm	8	4 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010D1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	3.73 mm	15.24 mm	8	4 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010BB6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	4.06 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8010AD6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	3.73 mm	15.24 mm	8	6 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010BD2	STMicroelectronics	MEMORY MANAGEMENT UNIT	MILITARY	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	125 Cel	-55 Cel		DUAL	3.73 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010AB6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	4.06 mm	15.24 mm	8	6 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8010B1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	4.06 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8010AB1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	4.06 mm	15.24 mm	8	6 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8010AD2	STMicroelectronics	MEMORY MANAGEMENT UNIT	MILITARY	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	125 Cel	-55 Cel		DUAL	3.73 mm	15.24 mm	8	6 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010BB1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	4.06 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-PDIP-T48	Not Qualified	NO
Z8010BD1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	3.73 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010D6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	3.73 mm	15.24 mm	8	4 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010BD6	STMicroelectronics	MEMORY MANAGEMENT UNIT	INDUSTRIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	85 Cel	-40 Cel		DUAL	3.73 mm	15.24 mm	8	10 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
Z8010AD1	STMicroelectronics	MEMORY MANAGEMENT UNIT	COMMERCIAL	THROUGH-HOLE	48	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V		8		IN-LINE		4.75 V	70 Cel	0 Cel		DUAL	3.73 mm	15.24 mm	8	6 MHz	CMOS		5 V		Z8001	2.54 mm		R-CDIP-T48	Not Qualified	NO
L64815NC-33	Broadcom	MEMORY MANAGEMENT UNIT	COMMERCIAL	PIN/PEG	224	PGA	SQUARE	PLASTIC/EPOXY	NO				5	GRID ARRAY	PGA224,18X18		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	PERPENDICULAR					CMOS	530 mA	5 V	Memory Management Units		2.54 mm		S-PPGA-P224	Not Qualified		e0
L64860	Broadcom	MEMORY MANAGEMENT UNIT	COMMERCIAL	PIN/PEG	299	PGA	SQUARE	CERAMIC	NO				5	GRID ARRAY	PGA299,20X20		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	PERPENDICULAR					CMOS	300 mA	5 V	Memory Management Units		2.54 mm		S-XPGA-P299	Not Qualified		e0
L64815QC-25	Broadcom	MEMORY MANAGEMENT UNIT	COMMERCIAL	GULL WING	208	QFP	SQUARE	PLASTIC/EPOXY	YES				5	FLATPACK	QFP208,1.2SQ,20		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	QUAD					CMOS	340 mA	5 V	Memory Management Units		.5 mm		S-PQFP-G208	Not Qualified		e0
L64815NC-25	Broadcom	MEMORY MANAGEMENT UNIT	COMMERCIAL	PIN/PEG	224	PGA	SQUARE	PLASTIC/EPOXY	NO				5	GRID ARRAY	PGA224,18X18		70 Cel	0 Cel	Tin/Lead (Sn/Pb)	PERPENDICULAR					CMOS	340 mA	5 V	Memory Management Units		2.54 mm		S-PPGA-P224	Not Qualified		e0

A Memory Management Unit (MMU) is a hardware component that manages the translation of virtual memory addresses to physical memory addresses. The MMU is an essential component of modern computer systems and is responsible for providing a layer of abstraction between the operating system and the physical memory of the system.

The MMU translates virtual memory addresses to physical memory addresses using a page table, which is a data structure that maps virtual memory addresses to physical memory addresses. The page table is stored in memory and is managed by the operating system. When a program requests data from memory, the MMU uses the page table to translate the virtual memory address to a physical memory address.

The MMU also provides memory protection by assigning different access permissions to different memory regions. This allows the operating system to isolate programs from each other and prevent unauthorized access to memory. For example, the MMU can assign read-only access to certain memory regions to prevent programs from modifying critical data.

Another important function of the MMU is memory sharing. The MMU allows multiple programs to share memory regions, which can improve system performance and reduce memory usage. By sharing memory, programs can communicate with each other more efficiently and reduce the need for redundant data storage.