CY8C9520A-24PVXI

CY8C9520A-24PVXI is a multi-port I/O expander with on board user available EEPROM and several PWM outputs. It operates as two I2C server devices. The first device is a multi port I/O expander (single I2C address to access all ports through registers). The second device is a serial EEPROM. Dedicated configuration registers can be used to disable the EEPROM. The EEPROM uses 2-byte addressing to support the 28 Kbyte EEPROM address space. The selected device is defined by the most significant bits of the I2C address or by specific register addressing. The I/O expander's data pins can be independently assigned as inputs, outputs, quasi-bidirectional input/outputs or PWM outputs. The individual data pins can be configured as open drain or collector, strong drive, resistively pulled up or down, or high impedance. The factory default configuration is pulled up internally.

• I2C interface logic electrically compatible with SMBus
• Up to 20 I/O data pins independently configurable as I/Ps, O/Ps, Bi-directional I/O, or PWM O/P
• 3Kbytes EEPROM and user default storage, I/O port settings in internal EEPROM
• 4 PWM sources with 8-bit resolution
• Extendable soft addressing algorithm allowing flexible I2C address configuration
• 20 configurable I/O pins
• Interrupt output indicates input pin level changes and pulse width modulator (PWM) state changes
• Internal power on reset (POR) and internal configurable watchdog timer
• 28 pin (210 Mil) SSOP package
• Industrial temperature range from -40 to 85°C