co120sq Connect One Ltd., co120sq Datasheet - Page 19

• Manufacturer Part Number: co120sq
• Description: The Ichip? Co120sq Internet Controller? Is A High-performance, Firmware-based Intelligent Peripheral Device That Provides Internet Connectivity Solutions For A Wide Range Of Embedded Devices.
• Manufacturer: Connect One Ltd.

6.2.2 Pin Functional Descriptions (WiFi Connection)
6.2.2.1
Signal
-MSEL
-RESIN
CLKIN
TXDI/
NEWDATA
-SERNET_
FRC
Z[0,1]
Z[2]
iChip CO120SQ Data Sheet
Miscellaneous Signals (WiFi Connection)
Type
TWCK
I(PU)
I(PU)
I(ST)
IO
O
I
Pin No.
53, 52
41
24
19
49
54
2
Description
Mode Select:
When not used, can be left Not Connected.
-RESET INPUT: When -RESIN is LOW, iChip
immediately terminates its present activity and clears
its internal logic. -RESIN must be held LOW for at
least 10 ms after power reaches 90%.
This input is provided with a Schmitt trigger to
facilitate power-on reset generation via an RC
network.
Oscillator Input: The Oscillator must be 16MHz.
Monitor Mode: TXDI (O)
Application Mode: NEWDATA (O)
Force SerialNET mode: When this pin is LOW, iChip
is forced into SerialNET mode. When this pin is
HIGH, SerialNET mode is managed with AT+i
commands.
Leave Not Connected when not in use. Not
implemented.
General Purpose I/O (GPIO): Reserved for future
use. These pins should be left NC (Not Connected).
Two-wire clock.
•
•
•
This pin supplies asynchronous serial transmit
data for ICP (In-Circuit Programming) mode.
This signal is raised when new data in one or
more sockets is available. It is lowered when any
socket data is read.
When this pin is held LOW during power up
for at least 5 seconds, iChip will automatically
enter monitor mode.
When this pin is held LOW during power up
for less than 5 seconds, it forces iChip into
auto baud rate detection.
If iChip is in SerialNET mode, iChip exits
SerialNET mode.
Pin Descriptions
6-7