High-concerned chemical : none
is_d : Yes
Dissipation Power : n/a
Supply Voltage : n/a
Application : Computer
Type : Module
Brand Name : SZYTF
Origin : Mainland China
Condition : New
Operating Temperature : n/a
1. Description:
This module is the 16 way IO extension module of the 12C interface, and built in the MCP23017 chip. The function of the chip is complete. Each IO can be arbitrarily configured as input or output, and a pull up resistor can be set, and the interrupt function can be enabled for the IO configured as input. The IO interface has a strong driving capacity, and the current and current can reach 25mA.
MCP23017 is a high-speed IIC interface. It supports the IIC frequency of 100KHz, 400KHz and 1.7MHz. The chip has 3 address pins, which can be set up for 8 different addresses. So 8 modules can be connected through two IIC buses to achieve up to 128 IO extensions.
This module is flexible in configuration and strong in driving ability. There are many parallel connections.
2. Parameters:
No.
Parameter
Value
1
Operating voltage
3.0V-5.5V
2
Drive chip
MCP23017
3
Number of IO
16 (input, output, interruption)
4
Drive power supply
25mA1
5
12C frequency
100KHz, 400KHz, 1..7MHz
6
working temperature
-40 Celsius -125 Celsius
7
Chip level
Industrial grade
8
Parallel multiple
Up to 8
9
Driver
51 and Arduino
10
Module size
65mm*19mm
3. Pin description:
No.
Pin
Function
Remark
1
VCC
Power source input
3.0V-5.5V
2
GND
Power negative electrode
0V
3
SCL
12C clock line
SCL connecting single chip IO pin or MCU 12C interface
4
SDA
12C data line
SDA connecting single chip IO pin or MCU 12C interface
5
RST
Chip reduction
Low level effective, connecting MCU IO pin or unconnected
6
ITA
GPIOA port interrupt output
Connect MCU IO pin, without connection when interruption
7
ITB
GPIOB port interrupt output
Connect MCU IO pin, without connection when interruption
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