The S-7750B from Seiko is a programmable port controller IC comprising EEPROM, a data output controller and a circuit to prevent malfunction during low supply voltage. It operates at 400 kHz and interfaces with external devices via the I²CBUS. High and low of the 8-channel digital output, and the delay time of each channel can be controlled by serial signals.

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Initial value and reverse delay time can be set for the 8-channel digital output pins, respectively for each port. This is effective for controlling turning on or off the voltage regulator in mobile phones. The built-in EEPROM allows the initial value of each control setting to be retained when power is off.

Features include an operating voltage range of 2.3 V to 4.5 V, 3 µA maximum standby current, an EEPROM endurance of 10⁵ cycles (at -40 to +85°C), and built-in EEPROM protection. Housed in a WLP-16A package, pricing is $0.79 for quantities of 10,000.