MCP23017-E/SS SSOP28: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	Operating	1.8	-	5.5	V
Input Leakage Current	IISS	VIN = VDD, TA = 25°C	-1	-	1	μA
Output Sink Current	IOL	VOL = 0.4V, TA = 25°C	-	25	-	mA
Output Source Current	IOH	VOH = VDD-0.4V, TA = 25°C	-	25	-	mA
High-Level Input Voltage	VIH	ICC = 1μA	0.7	-	VDD	V
Low-Level Input Voltage	VIL	ICC = 1μA	0	-	0.8	V
High-Level Output Voltage	VOH	IOH = -0.4mA	VDD-0.4	-	VDD	V
Low-Level Output Voltage	VOL	IOL = 16mA	0	-	0.4	V

Power Supply Setup:
- Ensure the supply voltage (VDD) is within the operating range of 1.8V to 5.5V.
- Connect VDD to the positive power supply and GND to the ground.
I2C Communication:
- The MCP23017 communicates via the I2C bus using SDA and SCL pins.
- Pull-up resistors are required on both SDA and SCL lines for proper communication.
Pin Configuration:
- Configure GPIOs as inputs or outputs using the registers (IODIRA/B).
- Use pull-up resistors if needed by setting the corresponding bits in GPPUA/B registers.
Interrupt Handling:
- Enable interrupts by configuring the INTCONA/B registers.
- Monitor the INTA/B pins for interrupt signals from the device.
Operating Temperature:
- Ensure the ambient temperature (TA) does not exceed the operational limits specified in the datasheet.
Current Limitations:
- Do not exceed the maximum sink and source currents for input/output pins to prevent damage.
Programming:
- Initialize the device by writing to configuration registers.
- Read/write data to/from GPIO registers as needed.
Handling Static Electricity:
- Handle the device with care to avoid ESD damage; use anti-static precautions.
Mounting:
- Follow recommended PCB layout guidelines for optimal performance and reliability.

For detailed register configurations and advanced features, refer to the official Microchip MCP23017 datasheet.

(For reference only)