co120sq Connect One Ltd., co120sq Datasheet - Page 26

• 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.

Signal
-SERNET_IND
-SERNET_FRC
Z[0-1, 4-9]
Z[2]
Z[3]
GND
GND_C1
GND_C2
GND_C3
GND_R
VDD
VDD_R
NC
SLEEP_DIS
iChip CO120SQ Data Sheet
Type
TWCK
I(PU)
TWD
IO
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O
P
P
I
37, 36, 35,
34, 33, 32,
Pin No.
9, 17, 29,
3, 4, 8,
10, 11,
12, 14,
15, 16,
18, 21,
25, 28,
30, 39,
44, 50,
53, 52
57, 79
38, 51
13, 22
49
54
55
23
20
46
26
27
58
7
Description
SerialNET Indicator: When Low, it indicates that
iChip is in SerialNET Mode.
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 Not Connected (NC).
Two-wire clock.
Two-wire data.
Ground: iChip Ground signal.
Must connect this pin with 1uF capacitor to GND (pin
25). For internal 1.8V power supply.
Must connect this pin with 33pF and 10uF capacitors
to GND (pin 28). For internal 1.8V power supply.
Must connect this pin with 33pF and 10uF capacitors
to GND (pin 57). For internal 1.8V power supply.
Must connect this pin with 10K resistor to GND.
Power supply: This pin supplies power (+3.3V) to
iChip’s I/O pins.
Must connect this pin with 10K resistor to VDD.
Not Connected pins.
Sleep Disable: When this pin is HIGH, iChip’s Sleep
socket data is read.
Pin Descriptions
6-14