HT42B532-1 Datasheet, PDF (1/17 Pages) Holtek Semiconductor Inc – USB to I 2C Bridge IC

HT42B532-x
USB to I ²C Bridge IC
Features
• Operating Voltage (V_DD): 3.3V~5.5V
• I²C 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 external 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 – I²C
♦♦ _{Supports clock rate up to 400kHz}
♦♦ _{Supports Master and Slave modes decided by AP}
command
♦♦ _{Supports maximum 62 bytes transmit buffer and}
62 bytes receive buffer
♦♦ _{Supports SDA (Master mode) and SCL or SDA}
(Slave mode) pins resume signal to request a
remote wake-up
♦♦ _{Supports VDDIO pin for I}²_{C and A0~A1 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: 8-pin SOP, 10-pin MSOP
General Description
The HT42B532-x is a high performance USB to I²C
bridge controller with fully integrated USB and I²C
interface functions, designed for applications that
communicate with various types of I²C. 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 I²C clock generator.
USB Bridge IC Naming Rules
Product Family
HT42B 5 3 2 - x
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