Renesas Electronics Bus Controllers 7

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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	Maximum Data Transfer Rate	Minimum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	Width	Additional Features	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Technology	Nominal Supply Voltage	Sub-Category	Bus Compatibility	Terminal Pitch	JESD-30 Code	Qualification	JESD-609 Code
UPD720201K8-701-BAC-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS	OTHER	NO LEAD	68	QCCN	SQUARE	PLASTIC/EPOXY	YES			3.3	CHIP CARRIER	LCC68,.32SQ,16		85 Cel		0 Cel	TIN BISMUTH	QUAD										3.3 V	Bus Controllers		.4 mm	S-PQCC-N68	Not Qualified	e6
UPD720114GA-YEU-AT	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS	OTHER	GULL WING	48	TFQFP	SQUARE	PLASTIC/EPOXY	YES	3.46 V			FLATPACK, THIN PROFILE, FINE PITCH		3.14 V	85 Cel		0 Cel		QUAD	1.2 mm	7 mm			30 MHz			7 mm	CMOS	3.3 V			.5 mm	S-PQFP-G48
UPD720200AF1-DAP-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS		BALL	176	BGA	SQUARE	PLASTIC/EPOXY	YES				GRID ARRAY							BOTTOM			ALSO REQUIRES 3.3 V		48 MHz	NOT SPECIFIED	NOT SPECIFIED		CMOS	1.05 V		PCI		S-PBGA-B176
UPD720115K8-711-BAK-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	NO LEAD	40	QCCN	SQUARE	UNSPECIFIED	YES				CHIP CARRIER			85 Cel		-40 Cel	TIN BISMUTH	QUAD									CMOS	5 V				S-XQCC-N40		e6
UPD720210K8-BAF-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS	COMMERCIAL	NO LEAD	76	HVQCCN	SQUARE	UNSPECIFIED	YES		0		CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE			70 Cel	625 MBps	0 Cel	TIN BISMUTH	QUAD	.9 mm	9 mm		0	24 MHz			9 mm	CMOS	5 V		SPI	.4 mm	S-XQCC-N76		e6
UPD720231AK8-614-BAE-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS	OTHER	NO LEAD	48	QCCN	SQUARE	UNSPECIFIED	YES				CHIP CARRIER			85 Cel	625 MBps	0 Cel		QUAD			ALSO REQUIRES 5V POWER SUPPLY			NOT SPECIFIED	NOT SPECIFIED		CMOS	3.3 V		ATA; ATAPI; SPI		S-XQCC-N48
UPD720202K8-711-BAA-M1-A	Renesas Electronics	BUS CONTROLLER, UNIVERSAL SERIAL BUS		NO LEAD	48	HVQCCN	SQUARE	UNSPECIFIED	YES	3.6 V	0		CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC48,.28SQ,20	3 V	85 Cel	625 MBps	-40 Cel		QUAD	.9 mm	7 mm		0	100 MHz			7 mm	CMOS	3.3 V		PCI, SPI, USB	.5 mm	S-XQCC-N48

Bus Controllers

Bus controllers are integrated circuits that are used to manage and control the flow of data and control signals between different devices in a computer system. They are commonly used in systems that have multiple buses, such as a memory bus and an I/O bus. Bus controllers ensure that data is transferred efficiently and correctly between different devices in the system.

One of the primary functions of a bus controller is to manage bus arbitration. Bus arbitration is the process of resolving conflicts that occur when two or more devices on the bus attempt to access the bus at the same time. Bus controllers use various algorithms to determine which device has priority access to the bus and when other devices can access it.

Another important function of bus controllers is to manage the transfer of data and control signals between devices on the bus. This involves controlling the timing and synchronization of signals, as well as error detection and correction. Bus controllers also manage other aspects of the bus, such as interrupt handling and power management.