AT78C7015

www.DataSheet4U.com Features Operates from Single Supply: 3.3V Small Footprint 64-Pin TQFP Package or Flip Chip Precision Low-voltage Monitor Circuitry for the Power Supply Master Power on Reset Serial Port Interface with Read-back Capability Over-temperature Protection/Warning Shock Sensor Signal Processing On-chip 1.8V, 2.5V and -3V Regulators Low Power Consumption, 9 mA in Normal Run Mode Spindle Driver – Commutator is Driven by a FLL for High Immunity to Jitter – Programmable 10-bit DAC – Adjustable Slew Rate Control – External Startup Capability – 0.4A Current Capability with Ron = 1.4Ω – Digital Commutation Delay and Blanking – Programmable Delay from BEMF Zero Crossing – External INDEX Signal for Spin Lock – Active Spindle Braking Capability VCM Driver – 0.4A Current Capability with Ron = 2.2Ω – Programmable 14-bit DAC – Ramp Load/Unload Capability with 10-bit ADC – Programmable VCM Current Controlled by Sense Resistor Packaging: Variety Available Depending on Customer Needs Spindle/VCM Motor Controller/ Drivers AT78C7015 Summary Description The AT78C7015 is a CMOS monolithic device that integrates Spindle and VCM controllers as well as power stages into one chip. The device operates from 3.3V power supply. The AT78C7015 is designed for a small-form-factor hard disk drive application. A precision low-voltage detection circuit monitors the power supply and initiates VCM retract at voltage fault condition. A 3-line serial port interface with re...