HT45B0K

Manufacturer Part NumberHT45B0K
DescriptionSPI to USB Bridge
ManufacturerHoltek Semiconductor
HT45B0K datasheet
 


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HT45B0K
SPI to USB Bridge
Features
Glueless slave SPI interface to Holtek 's MCU
USB (Universal Serial Bus) 1.1 Full-speed module
− 6 endpoints (endpoint 0 included)
− FIFO: 8, 8, 8, 64, 8, 64 for EP0~EP5 respectively
● Operating voltage: V
DD
● 6MHz/12MHz (CLKI) external clock input for USB PLL clock
● Suspend Mode with low suspend current
● Remote Wake-up function
● USB Multiple Interrupt Generation Sources:
Access of the corresponding USB FIFO from the USB host
USB suspend signal from the USB host
USB resume signal from the USB host
USB Reset signal from the USB host
● CMOS external clock input, CLKI, with frequency 6MHz/12MHz for the USB PLL clock
● 16-pin NSOP package
General Description
This device is a companion chip for microcontrollers to provide USB connectivity with the USB
host. Six USB endpoints are supported with 8/8/8/64/8/64-byte FIFO for endpoint 0~5 respectively.
An external interrupt output to the host MCU is used for inetrrupt-driven operation.
However, the host MCU may also poll the status register to obtain the latest status if the interrupt is
not used.
The possible applications include low-cost data links for computers/peripherals, portable and
battery operated devices/instruments, factory automation and process control.
Block Diagram
Rev 1.00
= 3.3V~5.5V
1
www.DataSheet4U.com
March 22, 2010