Microchip Technology Bus Controllers 291

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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

USB83340AMR-B-V02

Microchip Technology

BUS CONTROLLER, UNIVERSAL SERIAL BUS

NO LEAD

32

HVQCCN

SQUARE

UNSPECIFIED

YES

5.5 V

AEC-Q100

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC32,.2SQ,20

4.5 V

105 Cel

-40 Cel

MATTE TIN

QUAD

1 mm

5 mm

8

52 MHz

5 mm

CMOS

70 mA

5 V

UART

.5 mm

S-XQCC-N32

USB84604AFT-B-001080-V02

Microchip Technology

BUS CONTROLLER, UNIVERSAL SERIAL BUS

INDUSTRIAL

NO LEAD

48

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

TS 16949

0

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC48,.28SQ,20

85 Cel

-40 Cel

QUAD

.9 mm

7 mm

0

24 MHz

7 mm

CMOS

70 mA

3.3 V

I2C; SPI; UART; USB

.5 mm

S-PQCC-N48

USX2064-AEZG-TR

Microchip Technology

BUS CONTROLLER, UNIVERSAL SERIAL BUS

COMMERCIAL

NO LEAD

36

HVQCCN

SQUARE

PLASTIC/EPOXY

YES

1.98 V

CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

LCC36,.24SQ,20

1.62 V

70 Cel

.0125 MBps

0 Cel

QUAD

1 mm

6 mm

ALSO OPERATES AT 3.3 V NOMINAL SUPPLY

24 MHz

6 mm

CMOS

305 mA

1.8 V

I2C; USB

.5 mm

S-PQCC-N36

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.