Datasheet

 2011 Microchip Technology Inc. DS22228B-page 3
MCP2200
1.0 FUNCTIONAL DESCRIPTION
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 Tabl e 1- 1 and
Section 1.6 “GPIO Module” for details about the pin
functions.
TABLE 1-1: PINOUT DESCRIPTION
Pin
Name
SSOP,
SOIC
QFN
Pin
Type
Standard Function Alternate Function
GP0/SSPND 16 13 I/O General purpose I/O USB suspend status pin
(refer to Section 1.6.1.1)
GP1/USB-
CFG
15 12 I/O General purpose I/O USB configuration status pin
(refer to Section 1.6.1.2)
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 Section 1.6.1.3)
GP7/TxLED 5 2 I/O General purpose I/O USB transmit activity LED
output (refer to Section 1.6.1.4)
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 118PPower
VSS 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.