Transcript I2C Port Expanders

I2C I/O Expanders
9520/9540/9560
CY8C9520 / CY8C9540 / CY8C9560
I2C Port Expanders
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CY8C9520 / CY8C9540 / CY8C9560
20 / 40 / 60 individually configurable I/O
4 / 8 / 16 PWMs – map to any pin, multiple pins
3K / 11K / 27K User EEPROM
I2C communication, 400 kHz
Industrial temp range: -40 to +85C
Operating voltage 3.0V – 5.25V
28-SSOP / 48-SSOP / 100-TQFP
One device replaces multiple port expander ICs from other
vendors
Port Expander Architecture
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Port Expander Features
• I2C / SMBus-compatible slave device
• Three port expansion options:
• CY8C9520 – 20 expansion I/O + 3KB EEPROM + 4 PWM sources
• CY8C9540 – 40 expansion I/O + 11KB EEPROM + 8 PWM sources
• CY8C9560 – 60 expansion I/O + 27KB EEPROM + 16 PWM sources
• Extendable Soft Addressing™ algorithm allowing flexible
I2C-address configuration (Max. 128 device addresses)
• Storage of user defaults and I/O port settings in the internal
EEPROM
• Optional EEPROM write disable pin input
• Interrupt output indicates input pin level & PWM state
changes
• Internal power-on reset
• Functional superset of devices from competitors
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Target Applications
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Personal Computing Systems
Server / Storage Systems
Telecom Systems
Industrial Control
Personal Gaming Systems
Front Panel Control
Indicator Control
Who is out there
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Philips Semiconductor
Dallas Semiconductor (Maxim)
Texas Instrument
Microchip
On Semiconductor
Why choose Cypress
• Compatibility: Cypress I/O expanders employ
industry standard I2C interface. Migrating from your
existing design to PSoC will be straightforward.
• Integration: Cypress I/O expanders have the widest
range of I/Os from 20(9520) to 60(9560). All the I/Os
are bi-directional and number of I/Os can be
expanded to thousands via soft addressing.
• Non-Volatile Configuration: No more worries if the
power goes out. Cypress I/O expanders will get right
back to work fully configured once the power is
restored.
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Why choose Cypress
• Maximum Available Slave device Address (I2C):
For your complex design, imagine being able to have
the option of adding up to 7000 I/Os and up to 3MB of
EEPROM in your application.
• PWMs: Cypress I/O expanders have the widest range
of PWMs available on the market 4(9520), 8(9540),
and 16(9560). All pins can be connected. One PSoC
will be able to replace up to 16 competitor’s parts.
• EEPROM: Cypress I/O expanders have more user
accessible serial EEPROM than any competitors.
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Why choose Cypress
• Competitive Price: PSoC has the lowest price per
bit (9560) on the market.
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Why choose Cypress
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Why choose Cypress
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Conclusion
Compatibility
Integration
Flexibility
Competitive pricing
Cypress is your number one choice
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