CY3242-IOXLITE Cypress Semiconductor Corp, CY3242-IOXLITE Datasheet - Page 9

• 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

4.
4.1
To set the I2C address to 0x40 (0100000), set A0 to Strong Pull Down using jumpers J8 and J9. The other
address pins are made available for use as GPIO by placing J2, J4 and J6 to the I (I/O) position. The resulting
I2C address is:
I2C address is set to 0x42.
4.2
To set the I2C address to 0x46 (0100110), set A0 to Weak Pull Down, A1 to Weak Pull Up, and A2 to Weak
Pull Down. A3 is still available for use as GPIO. The resulting I2C address is:
a
I2C Port Expander Lite Demo Kit Guide
This position represents the R/W bit.
A6
7
0
N/A
A6
7
0
N/A
A5
6
1
N/A
A5
6
1
N/A
I2C Port Expander Address Select Examples
I2C Port Expander Address Example 1
I2C Port Expander Address Example 2
A4
5
0
N/A
A4
5
0
N/A
A3
4
0
J2 = I
A3
4
0
J2 = I
3
0
J4 = I
3
0
J4 = S
J5 = H
A2
A2
2
0
A1
J6 = I
2
0
J6 = W
J7 = H
A1
J8 = L
A0
1
0
J9 = S
A0
1
0
J9 = W
J8 = L
N/A
0
0
N/A
N/A
0
0
N/A
a
Expander Address Pins
I2C Address Bits
Bit Value
Jumper Setting
Expander Address Pins
I2C Address Bits
Bit Value
Jumper Setting
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