Datasheet

MCP2122
DS21894C-page 4 Preliminary © 2007 Microchip Technology Inc.
TABLE 1-2: PIN DESCRIPTION
Pin Name
Pin Number
Pin
Type
Buffer
Type
PDIP SOIC Description
16XCLK 1 1 I ST 16x external clock source input
TX 2 2 I ST Asynchronous receive from Host Controller UART
RX 3 3 O — Asynchronous transmit to Host Controller UART
V
SS 4 4 — P Ground reference for logic and I/O pins
RESET 5 5 I ST Resets the Device
H = Normal Operation
L = Device in Reset
RXIR 6 6 I ST Asynchronous receive from infrared transceiver
TXIR 7 7 O — Asynchronous transmit to infrared transceiver
V
DD 8 8 — P Positive supply for logic and I/O pins
Legend: ST = Schmitt Trigger input with CMOS levels
I = Input
P=Power
O = Output