Microchip Technology ADM00310 Data Sheet

 2011 Microchip Technology Inc.

DS22228B-page 3

The MCP2200 is a USB-to-UART serial converter
which enables USB connectivity in applications that
have a UART interface. The device reduces external
components by integrating the USB termination
resistors. The MCP2200 also has 256 bytes of
integrated user EEPROM.

The MCP2200 has eight general purpose input/output
pins. Four pins have alternate functions to indicate
USB and communication status. See 

 and

 for details about the pin

functions.

GP0/SSPND

16

13

I/O

General purpose I/O

USB suspend status pin 
(refer to 

GP1/USB-
CFG

15

12

I/O

General purpose I/O

USB configuration status pin 
(refer to 

GP2

14

11

I/O

General purpose I/O

GP3

9

6

I/O

General purpose I/O

GP4

8

5

I/O

General purpose I/O

GP5

7

4

I/O

General purpose I/O

GP6/RxLED

6

3

I/O

General purpose I/O

USB receive activity LED output 
(refer to 

GP7/TxLED

5

2

I/O

General purpose I/O

USB transmit activity LED 
output (refer to 

)

RST

4

1

I

Reset input must be externally biased

CTS

13

10

I

Hardware flow control “Clear to Send” input 
signal

RX

12

9

I

USART RX input

RTS

11

8

O

Hardware flow control “Request to Send” 
output signal

TX

10

7

O

USART TX output

V

DD

1

18

P

Power

V

SS

20

17

P

Ground

OSC1

2

19

I

Oscillator input

OSC2

3

20

O

Oscillator output

D+

19

16

I/O

USB D+

D-

18

15

I/O

USB D-

V

USB

17

14

P

USB power pin (internally connected to 
3.3V). Should be locally bypassed with a 
high quality ceramic capacitor.

EP

—

21

—

Exposed Thermal Pad (EP). Do not 
electrically connect.