MCP2200 Datasheet, PDF (3/34 Pages) Microchip Technology – USB 2.0 to UART Protocol Converter with GPIO

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 Table 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
GP1/USBCFG 15 12 I/O General purpose I/O
GP2
GP3
GP4
GP5
GP6/RxLED
14 11 I/O General purpose I/O
9 6 I/O General purpose I/O
8 5 I/O General purpose I/O
7 4 I/O General purpose I/O
6 3 I/O General purpose I/O
GP7/TxLED
5 2 I/O General purpose I/O
USB suspend status pin (refer to
Section 1.6.1.1 “SSPND Pin
Function”)
USB configuration status pin
(refer to Section 1.6.1.2 “USB-
CFG Pin Function”)
USB receive activity LED output
(refer to Section 1.6.1.3
“RxLED Pin Function (IN Mes-
sage)”)
USB transmit activity LED output
(refer to Section 1.6.1.4
“TxLED Pin Function (OUT
Message)”)
RST
4 1 I Reset input must be externally biased
CTS
RX
13 10 I Hardware flow control “Clear to Send” input
signal
12 9 I USART RX input
RTS
TX
VDD
VSS
OSC1
OSC2
D+
D-
VUSB
EP
11 8 O Hardware flow control “Request to Send” output
signal
10 7 O USART TX output
1 18 P Power
20 17 P Ground
2 19 I Oscillator input
3 20 O Oscillator output
19 16 I/O USB D+
18 15 I/O USB D-
17 14 P USB power pin (internally connected to 3.3V).
Should be locally bypassed with a high quality
ceramic capacitor.
— 21 — Exposed Thermal Pad (EP). Do not electrically
connect, or connect to VSS.
 2010 Microchip Technology Inc.
DS22228A-page 3