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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2221 Datasheet

UART Protocol Converter

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MCP2221
USB 2.0 to I2C/UART Protocol Converter with GPIO
Features:
Universal Serial Bus (USB)
• Supports Full-Speed USB (12 Mb/s)
• Implements USB Protocol Composite Device:
- Communication Device Class (CDC) for
USB-to-UART Conversion
- Human Interface Device (HID) for I2C™
Device Control and Configuration
• 128-byte Buffer to Handle Data Throughput at
Any Supported UART Baud Rate:
- 64-Byte Transmit
- 64-Byte Receive
• Human Interface Device (HID) for Both
I2C Communication and Control:
64-byte Buffer to Handle Data Throughput at
Any I2C Baud Rate
• Fully-Configurable VID and PID Assignments and
String Descriptors
• Bus-powered or Self-powered
• USB 2.0-Compliant: TID# 40001594
USB Driver and Software Support
• Enumerates as a Composite USB Device (CDC
and HID) Using Standard Drivers for Virtual Com
Port (VCP) on the Following Windows® Operating
Systems: XP® (SP3), Vista®, 7, 8 and 8.1
• Configuration Utility for Establishing a Custom
Boot-up Configuration
• I2C/SMBus Terminal
• Windows DLL
CDC and Universal Asynchronous
Receiver/Transmitter (UART) Options
• Communications Device Class (CDC) for the
USB-to-UART Option
• Responds to SET LINE CODING Commands to
Dynamically Change Baud Rates
• Supports Baud Rates: 300-115200
• UART TX and RX Pins Only
• Serial Number Used During the CDC
Enumeration Can Be Enabled By Using the
Microchip-provided Configuration Utility or By
Calling the Proper API From the Support Libraries
for this Device
I2C/SMBus
• The Device Runs as an I2C Master. The Data to
Write/Read On the I2C Bus is Conveyed By the
USB Interface.
• I2C Master
- Up to 400 kHz Clock Rate
- Supports 7- or 10-bit Addressable Devices;
10-bit Addressable Devices are Supported
Through the PC Host Library
- Supports Block Reads/Writes of Up to 65,535
Bytes Long
• SMBus Master
- Supports All of the SMBus Transfers
- SMBus Functionality is Achieved Through a
Combination of Chip and Support Library
Processing
- Up to 400 kHz Clock Rate
General-Purpose Input/Output (GPIO) Pins
• Four General-Purpose Input/Output Pins
• All GP Pins Can Be Assigned to Other
Functionalities
Other Functionalities
• UART Activity LED Outputs (UTX and URX)
• SSPND Output Pin
• USBCFG Output Pin (Indicates When the
Enumeration Has Completed)
• Three ADC Inputs
• One DAC with Two Possible Output Options
• Clock Reference Output: 12 MHz or Other
Configurable Values
• External Interrupt Edge Detection
Other
• Operating Voltage: 3.0 to 5.5V
• Electrostatic Discharge (ESD) Protection: > 4 kV
Human Body Model (HBM)
• Industrial (I) Operating Temperature: -40°C to +85°C
2015 Microchip Technology Inc.
DS20005292B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP2221 Datasheet

UART Protocol Converter

No Preview Available !

MCP2221
Package Types
MCP2221
PDIP/SOIC/TSSOP
VDD
GP0
GP1
RST
URX
UTX
GP2
1
2
3
4
5
6
7
14 VSS
13 D+
12 D-
11 VUSB
10 SCL
9 SDA
8 GP3
MCP2221
4 x 4 QFN*
16 15 14 13
GP0 1
12 D+
GP1 2
RST 3
EP 11 D-
17
10 VUSB
URX 4
9 SCL
5678
Block Diagram
* Includes Exposed Thermal Pad (EP); see Table 1-1.
USB
Bus
USB Module &
Transceiver
USB HID
USB CDC
Internal
Oscillator
CONFIG
BUS MATRIX
GPIO
ADC/DAC
I2C Master
I2C
Bus
TXD/RXD
UART
IOC
PIN
MUX
GP Pins
CLKR
DS20005292B-page 2
2015 Microchip Technology Inc.


Part Number MCP2221
Description UART Protocol Converter
Maker Microchip
Total Page 30 Pages
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