HT45B0K

HT45B0K SPI to USB Bridge Features ● ● www.DataSheet4U.com ● ● ● ● ● ● ● 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: VDD = 3.3V~5.5V 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 S D I S D O S C K V D D V 3 3 O U S B M o d u le U D P U D N S e r ia l I/O In te rfa c e S C S C L K I IN T V D D G N D T o a ll c h ip p o w e r P L L 4 8 M H z Rev 1....