CY3242-IOXLITE Cypress Semiconductor Corp, CY3242-IOXLITE Datasheet - Page 7

• Manufacturer Part Number: CY3242-IOXLITE
• Description: KIT EVAL PSOC I2C PORT EXP
• Manufacturer: Cypress Semiconductor Corp
• Series: PSoC®r

Specifications of CY3242-IOXLITE

• Main Purpose: Interface, GPIO Expander
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CY8C24894, CY8C9520
• Primary Attributes: 8-Bit 20-Port GPIO Expander
• Secondary Attributes: 8 Switches, 11 LEDs
• Silicon Manufacturer: Cypress
• Application Sub Type: Expander
• Kit Application Type: Interface
• Silicon Core Number: CY8C9520, CY8C9540 And CY8C9560
• Features: I2C Port Expander Lite Demo Kit
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 428-2023; CY3242-IOXLITE

2.4
2.5
Connects the I2C-USB Bridge circuit to the USB port for configuration and data collection.
2.6
Used for reprogramming the I2C-USB Bridge circuit's firmware.
2.7
Closed 2, 3 – Board is powered from the USB cable (default).
Closed 1, 2 – Board is powered from external DC power supply using the internal regulator.
2.8
2.9
Connects the I/O Expander's I2C bus to either the I2C-USB Bridge circuit, or to the External I2C Connector
(J11).
3.
The I2C Port Expander board allows the user to select the address used for the expander device. You must
configure every device on the same I2C bus to an individual I2C address. For I2C address configuration, use
the address selection jumpers J2 – J9. Each address line has two jumpers associated with it, a Mode jumper
and a High/Low jumper. The Mode jumper allows the pin to be connected to a LED for the I/O function (position
I), as a Strong address pin (S), or as a Weak address pin (W). The High/Low jumper has no effect if the Mode
jumper is in the I/O position. If the Mode jumper is in one of the address positions, the High/Low jumper
determines if the address pin is pulled High (H) or Low (L).
Only the first four address pins, A0 through A3, are available for use as addresses on this demonstration board.
3.1
1-2 (I): I/O mode (default)
2-3 (S): Strong Address
3.2
1-2 (H): Pull up (default)
2-3 (L): Pull down
I2C Port Expander Lite Demo Kit Guide
1
VCC
2
GND
J11 - External I2C Interface
J12 USB Connector
J13 I2C-USB Bridge ISSP Connector
J14 Power Source Selection Jumper
J15 DC Adapter Plug Connector
SW2 I2C Bus Select Switch
I2C Port Expander Address Selection Jumpers
J2 - A3 Pin Mode
J3 - A3 High/Low Select
+
-
DC 7-14 0.3A
3
Interrupt
4
Clock
5
Data
7