MCP23X17EV Microchip Technology, MCP23X17EV Datasheet - Page 11

• Manufacturer Part Number: MCP23X17EV
• Description: BOARD EVAL FOR MCP23X17
• Manufacturer: Microchip Technology

Specifications of MCP23X17EV

• Main Purpose: Interface, GPIO Expander
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP23017, MCP23S17
• Primary Attributes: (2) 16-Bit GPIO Expanders, I2C and SPI
• Secondary Attributes: 4 Momentary Switches, 12 LEDs
• Processor To Be Evaluated: MCP23x17
• Data Bus Width: 16 bit
• Interface Type: SPI
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP23017, MCP23S17
• Kit Application Type: Interface
• Application Sub Type: GPIO Expander
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

2.1
2.2
© 2006 Microchip Technology Inc.
INTRODUCTION
FEATURES
Chapter 2. Installation and Operation
This chapter discusses the setup and operation of the MCP23X17 Evaluation Board.
The MCP23X17 Evaluation Board is designed to demonstrate simple, low-cost
input/output expansion using the MCP23X17 devices and a low-cost PICmicro
microcontroller.
Four MCP23X17 pins are configured as inputs and connected to four momentary push
buttons. The remaining twelve GPIO pins are configured as outputs and connected to
LEDs. Each button causes the LEDs to sequence in a predetermined pattern.
The MCP23X17 is provided in small, space-saving 18-lead SSOP packages.
The MCP23X17 Evaluation Board has the following features:
• Two 16-bit GPIO Expanders
• Slide switch for selecting between the two GPIO expanders.
• Four momentary buttons and twelve LEDs, each connected to an individual GPIO
• Headers for the MCP23X17 pins to allow evaluation in a user defined application.
• Jumpers (not populated, but shorted by a trace on the bottom of the PCB) to
• Header for programming the PIC16F818.
pin to demonstrate the input/output functionality of the MCP23X17.
isolate the MCP23X17 from the LEDs and buttons, so they can be evaluated in a
custom circuit.
- MCP23017 with I
- MCP23S17 with SPI interface
2
C interface
MCP23X17 EVALUATION
BOARD USER’S GUIDE
DS51592B-page 7
®