SERIAL IO/COMMUNICATION CONTROLLER, I2C BUS Bus Controllers 2

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Part	RoHS	Manufacturer	Peripheral IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	Maximum Supply Voltage	Screening Level	Address Bus Width	No. of Bits	DAC Channels	Bit Size	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Minimum Supply Voltage	Maximum Operating Temperature	CPU Family	Maximum Data Transfer Rate	Minimum Operating Temperature	Terminal Finish	ADC Channels	Terminal Position	DMA Channels	Maximum Seated Height	ROM Words	Width	Data EEPROM Size	Additional Features	Peripherals	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	RAM Bytes	Technology	Maximum Supply Current	Nominal Supply Voltage	PWM Channels	Sub-Category	Connectivity	ROM Programmability	Bus Compatibility	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Speed	Drive Interface Standard	JESD-609 Code	On Chip Program ROM Width	No. of I/O Lines
PCF8584P,112		NXP Semiconductors	SERIAL IO/COMMUNICATION CONTROLLER, I2C BUS	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	5.5 V		1	8			5	IN-LINE	DIP20,.3	4.5 V	85 Cel			-40 Cel	NICKEL PALLADIUM GOLD		DUAL		4.2 mm		7.62 mm				8	12 MHz			26.73 mm		CMOS	1.5 mA	5 V		Parallel IO Port			8051; 8049; 8048; 68000; 6800; 8088; Z80	2.54 mm	R-PDIP-T20		Not Qualified			e4
PCA9665PW		NXP Semiconductors	SERIAL IO/COMMUNICATION CONTROLLER, I2C BUS	INDUSTRIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	3.6 V		2				2.5/3.3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	2.3 V	85 Cel			-40 Cel	Nickel/Palladium/Gold (Ni/Pd/Au)		DUAL		1.1 mm		4.4 mm				8	28.5 MHz	30	260	6.5 mm		CMOS	8 mA	2.5 V		Bus Controllers			I2C	.65 mm	R-PDSO-G20	1	Not Qualified			e4

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.