HT42B533-1 Datasheet, PDF (1/18 Pages) Holtek Semiconductor Inc – USB to SPI Bridge IC

HT42B533-x
USB to SPI Bridge IC
Features
• Operating Voltage (V_DD): 3.3V~5.5V
• SPI pins Voltage (V_DDIO): 1.8V~V_DD (Less than V_DD
voltage)
• Fully integrated internal 12MHz oscillator with 0.25%
accuracy for all USB modes which requires no exter-
nal components
• USB interface
♦♦ _{USB 2.0 Full Speed compatible}
♦♦ _{Implements USB protocol composite device:}
–– Communication Device Class (CDC) for
communications and configuration.
–– Human Interface Device (HID) for user configure
USB VID, PID and device description strings
♦♦ _{Integrated an internal 1.5kΩ pull-high resistor on}
D+ pin
• Serial Interface – SPI
♦♦ _{Supports clock rate up to 8MHz}
♦♦ _{Supports Master and Slave modes decided by AP}
command
♦♦ _{Supports maximum 128 bytes transmit buffer}
and 128 bytes receive buffer
♦♦ _{Supports SDI (Master mode) / SCS (Slave mode)}
pin resume signal to request a remote wake-up
♦♦ _{Supports VDDIO pin for SPI pins power supply}
• Support standard Windows® drivers for Virtual
Com Port (VCP): Windows XP (SP2), Vista,
Windows 7, Windows 8, Windows 8.1 (only an
INF file is required) and Windows 10.
• Support Android 4.0 or later version and Mac OS X
• Integrated 256 bytes internal true EEPROM for user
memory
• Power down and wake-up functions to reduce power
consumption
• Package types: 10-pin MSOP, 16-pin NSOP
General Description
The HT42B533-x is a high performance USB to SPI
bridge controller with fully integrated USB and SPI
interface functions, designed for applications that
communicate with various types of SPI. The device
includes a USB 2.0 full speed compatible interface
which is used for PC commication. The device also
includes a fully integrated high speed oscillator which
is used for USB and SPI clock generator.
USB Bridge IC Naming Rules
HT42B 5 3 3 - x
Product Family
HT42B = Holtek Bridge IC
Bridge Series of Host
5 = USB
USB Class type
3 = CDC Class
6 = HID Class
Version
1 = First Version
Bridge Series of Device
2 = I²C
3 = SPI
4 = UART
Rev. 1.00
1
January 05, 2017