CP2501 Datasheet, PDF (1/2 Pages) Silicon Laboratories – Adds Windows-compatible USB HID touchscreen interface to touch-screen modules

CP2501
Single-Chip USB HID Touch-Screen Bridge
Programmable Touch-Screen Interface
- Adds Windows-compatible USB HID touchscreen
interface to touch-screen modules
- Supports multiple touch points and pen inputs
- Supports basic mouse functions
- Includes a programmable 8051-based controller that is
pre-programmed with USB interface
- Supports most common touch-screen module 
interfaces: UART, SPI and I²C.
UART Interface
- Data Bits: 5, 6, 7, and 8
- Stop Bits: 1, 1.5, and 2
- Parity: Odd, Even, Mark, Space, and None
- Baud Rates: 9600 bps to 500 kbps
SPI Master Interface
- 4-wire SPI Master with Chip Select
- Configurable Clock Polarity and Phase
- Clock speeds up to 4 MHz
SMBus / I²C Master Interface
- Operates at configurable clock rates up to 400 kHz
- Supports configurable slave address
GPIO Capability
- CP2501 supports 16 GPIO pins
- Configurable as inputs, open-drain outputs or push-
pull outputs
High-Speed 8051 µC Core
- 48 MHz or 24 MHz system clock
- Pipelined instruction architecture; executes 70% of
instructions in 1 or 2 system clocks
User Memory Space
- 53 kB Flash
- 3.5 kB RAM
USB Peripheral Function Controller
- HID Touch Screen class device
- USB Specification 2.0 compliant (full-speed)
- Built-in oscillator
- Configurable USB parameters such as VID, PID, and
strings
- Supports remote wakeup
Programming Options
- Obtain pre-programmed parts from the factory
- Program memory in-system
- Program over USB using bootloader
Supply Voltage 3.0 to 3.6 V
- Built-in voltage supply monitor
- Built-in 3 V regulator
Ordering Information
- CP2501-B01-GM (QFN-32, 5x5 mm)
Temperature Range: –40 to +85 °C
Connect to
VBUS or
External Supply
USB
Connector
VBUS
D+
D-
GND
Voltage
REGIN Regulator
VDD ^{& Monitor}
Oscillator
GND
USB Interface
Full-Speed Peripheral
VBUS
12 Mbps
Function
D+
Transceiver Controller
D-
Product Customization
CP2501
8051 Controller
USB HID
Touch Screen
Interface
User
Programmable
Code
Communications
Interfaces
UART Controller
SPI Master
SMBus Master
GPIO Controller
Touch Screen
Module
UART / SPI /
SMBus
(GPIO if needed)
Interface
Copyright © 2010 by Silicon Laboratories
7.21.2010