(Hong Kong)
Product Summary
The CY8C9540-24PVXIT is a multi-port I/O expander with on-board useravailable EEPROM and several PWM outputs. All devices in this family operate identically but differ in I/O pins, number of PWMs, and internal EEPROM size. The CY8C9540-24PVXIT operates as two I2C slave devices. The CY8C9540-24PVXIT is a multi-port I/O expander (single I2C address to access all ports via registers). The EEPROM utilizes 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.
Parametrics
CY8C9540-24PVXIT absolute maximum ratings: (1)TSTG Storage Temperature: -45 to +100°C; (2)TA Ambient Temperature with Power Applied: -40 to +85 oC; (3)Vdd Supply Voltage on Vdd Relative to Vss: -0.5 to +6.0 V; (4)VIO DC Input Voltage Vss: - 0.5 to Vdd + 0.5 V; (5)VIOZ DC Voltage Applied to Tri-state Vss: - 0.5 to + 0.5 V; (6)IMIO Maximum Current into any Port Pin -25 to +50 mA; (7)ESD Electro Static Discharge Voltage: 2000 V; (8)LU Latch-up Current: 200 mA.
Features
CY8C9540-24PVXIT features: (1)I2C interface logic electrically compatible with SMBus; (2)Up to 20 (CY8C9520), 40 (CY8C9540)or 60 (CY8C9560)I/O data pins independently configurable as inputs, outputs, bi-directional input/outputs or PWM outputs.; (3)4/8/16 PWM sources with 8-bit resolution; (4)Extendable Soft Addressing algorithm allowing flexible I2C-address configuration; (5)Internal 3-/11-/27-Kbyte EEPROM; (6)Storage of user defaults and I/O port settings in the internal EEPROM; (7)Optional EEPROM Write Disable (WD)input; (8)Interrupt output indicates input pin level changes and pulse width modulator (PWM)state changes; (9)Internal power-on reset (POR).
Diagrams
