HT45B0K Holtek Semiconductor, HT45B0K Datasheet

Manufacturer Part Number

HT45B0K

Description

SPI to USB Bridge

Manufacturer

Holtek Semiconductor

Datasheet

1.HT45B0K.pdf (23 pages)

HT45B0K

SPI to USB Bridge

Features

Rev 1.00

General Description

Block Diagram

●

● Operating voltage: V

● 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:

● CMOS external clock input, CLKI, with frequency 6MHz/12MHz for the USB PLL clock

● 16-pin NSOP package

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.

♦

− 6 endpoints (endpoint 0 included)

− FIFO: 8, 8, 8, 64, 8, 64 for EP0~EP5 respectively

Glueless slave SPI interface to Holtek 's MCU

USB (Universal Serial Bus) 1.1 Full-speed module

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

= 3.3V~5.5V

March 22, 2010

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