Datasheet

RN171
DS70005171A-page 4  2014 Microchip Technology Inc.
1.1 ASCII Command & Data Interface
The “WiFly Command Reference, Advanced Features
and Applications User's Guide” (DS50002230) pro-
vides a complete description of the ASCII command
and data interface for the RN171 module.
1.2 Interface Description
Figure 1-1 shows the RN171 pin diagram. Figure 1-3
shows the microcontroller to RN171 interface.
Table 1-1 describes the RN171 pins.
FIGURE 1-2: RN171 PIN DIAGRAM
FIGURE 1-3: MICROCONTROLLER TO RN171 INTERFACE
*1'
*1' *1'
*1'
6(1625
6(1625
6(1625
6(1625
6(1625B32:(5
9''
6(1625
*1' *1' $17 *1' *1'
,63B7;
,63B5;
*3,26'B&/.6&/.
*3,26'B'66
*3,26'B'
*3,26'B',17
*3,26'B&0'B026,
9GG
*3,2
*3,2
*3,2
*1'
63,B&6
63,B0,62
63,B6&.
63,B026,
)/$6+B32:(5
*1'
6(1625
6(1625
6(1625
*1'
5(6(7
)25&(B$:$.(
*3,2
576*3,2
&76*3,2
5;*3,2
7;B*3,2
*1'
65(*BYB&75/
9%$77
*3,26'B'0,62
RN171
(Top View)
TX
RX
RTS
CTS
RX
TX
CTS
(1)
RTS
(1)
MCU
RN171
Note 1: Hardware flow control signals CTS and RTS should be used for
baud rates of 115200 or greater.