Motorola DMA Controllers 5

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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	Address Bus Width	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Minimum Supply Voltage	Maximum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	Width	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Technology	Maximum Supply Current	Nominal Supply Voltage	No. of DMA Channels	Sub-Category	Bus Compatibility	Terminal Pitch	JESD-30 Code	Qualification	JESD-609 Code
MC68440FN-10	Motorola	DMA CONTROLLER	COMMERCIAL	J BEND	68	QCCJ	SQUARE	PLASTIC/EPOXY	YES	5.25 V	24		CHIP CARRIER		4.75 V	70 Cel	Tin/Lead (Sn/Pb)	QUAD	4.57 mm	24.2062 mm	16	10 MHz	NOT SPECIFIED	NOT SPECIFIED	24.2062 mm	MOS		5 V	2		M68000	1.27 mm	S-PQCC-J68	Not Qualified	e0
MC68440FN10	Motorola	DMA CONTROLLER	COMMERCIAL	J BEND	68	QCCJ	SQUARE	PLASTIC/EPOXY	YES			5	CHIP CARRIER	LDCC68,1.0SQ		70 Cel	Tin/Lead (Sn/Pb)	QUAD								MOS		5 V		DMA Controllers		1.27 mm	S-PQCC-J68	Not Qualified	e0
MC68442RC10	Motorola	DMA CONTROLLER	COMMERCIAL	PIN/PEG	68	PGA	SQUARE	CERAMIC	NO			5	GRID ARRAY	PGA68,10X10		70 Cel	Tin/Lead (Sn/Pb)	PERPENDICULAR								MOS	300 mA	5 V		DMA Controllers		2.54 mm	S-XPGA-P68	Not Qualified	e0
MC68450L8	Motorola	DMA CONTROLLER	COMMERCIAL	THROUGH-HOLE	64	DIP	RECTANGULAR	CERAMIC	NO			5	IN-LINE	DIP64,.9		70 Cel	Tin/Lead (Sn/Pb)	DUAL								MOS		5 V		DMA Controllers		2.54 mm	R-XDIP-T64	Not Qualified	e0
MC68450L-8	Motorola	DMA CONTROLLER	COMMERCIAL	THROUGH-HOLE	64	DIP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	NO	5.25 V	24		IN-LINE		4.75 V	70 Cel	Tin/Lead (Sn/Pb)	DUAL	4.32 mm	22.86 mm	16	8 MHz	NOT SPECIFIED	NOT SPECIFIED	81.28 mm	MOS		5 V	4		M68000	2.54 mm	R-CDIP-T64	Not Qualified	e0

DMA Controllers

A DMA (Direct Memory Access) controller is an electronic circuit that manages the transfer of data between devices without involving the CPU. It enables data to be transferred between memory and other devices, such as input/output (I/O) devices or storage devices, without interrupting the CPU. DMA controllers are commonly used in systems that require high-speed data transfer, such as multimedia systems and data storage systems.

DMA controllers work by allowing devices to access the system's memory directly, without going through the CPU. The DMA controller manages the transfer of data between devices and memory, and can transfer data in large blocks, reducing the number of interrupts that are required. This allows the CPU to focus on other tasks while the data transfer is taking place.

DMA controllers can also provide additional features such as bus arbitration, which is used to resolve conflicts that occur when multiple devices attempt to access the bus at the same time. DMA controllers can also provide error detection and correction, ensuring that data is transferred accurately and reliably.