IT8728 PDF – Environment I/O Control – ITE

 IT8728 is a versatile I/O controller manufactured by ITE Tech Inc. These ICs are mainly used to control and monitor various input and output functions in computer systems.

Part number : IT8728F

Function : Environment Control – Low Pin Count Input / Output ( EC – LPC I/O )

Package : QFP 128 Pin Type

Manufacturer : ITE Tech Inc

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IT8728 datasheet pdf

Description

The IT8728 is a highly integrated Super I/O

using the LowPin Count Interface. It provides the most commonly used legacy Super I/O functionality plus the latest Environment Control initiatives, including H/W Monitor and Fan Speed Controller. The device’s LPC interface complies with Intel “LPC Interface Specification Rev. 1.1”. The IT8728F is ACPI & LANDesk compliant.

The IT8728F features an enhanced hardware monitor providing three thermal inputs from remote thermal resistors, or thermal diode or diode-connected transistor (2N3904/2N3906). The device employs ITE’s innovative intelligent automatic Fan ON/OFF & speed control functions (SmartGuardian)to protect the system while reducing the system noise and power consumption.The Fan Speed Controller can control up to five fan speeds through five separate 256 steps of Pulse Width Modulation (PWM) output pins and monitor up to five FANs’ Tachometer inputs.

The IT8728 provides a variety of functions and interfaces to communicate with and control the input and output devices of the system. For example, it can perform functions such as fan control, voltage monitoring, temperature sensing, power management, clocks, and timers.

 

Pinouts

IT8728 Datasheet PDF

Features

1. Low Pin Count Interface

(1) Complies with Intel Low Pin Count Interface Specification Rev. 1.1

(2) Supports LDRQ#, SERIRQ protocols

(3) Supports PCI PME# Interfaces

2. ACPI & LANDesk Compliant

(1) ACPI V. 2.0 compliant

(2) Register sets compatible with “Plug and Play ISA Specification V. 1.0a”

(3) LANDesk 3.X compliant

(4) Supports 8 logical devices

3. Enhanced Hardware Monitor

(1) Built-in 8-bit Analog to Digital Converter

(2) 3 thermal inputs from either remote thermal resistor or thermal diode or diode-connected transistor, the temperature sensor of the current mode

IT8728 Datasheet PDF

 

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