IT8718F

IT8718F is a highly integrated super I/O based on low pin count interface. IT8718F provides the most commonly used traditional super I/O functions as well as the latest environmental control schemes such as hardware monitor, fan speed controller. The IT8718F features an enhanced hardware monitor that provides 3 thermal inputs from remote thermistors, thermal diodes or diode-connected transistors (2N3904). The device also provides ITE's innovative smart automatic fan on/off and speed control function (SmartGuardian) to protect the system and reduce system noise and power consumption.

Product feature:

1. Enhanced hardware monitor

− Built-in 8-bit Analog to Digital Converter

− 3 thermal inputs from a remote thermal resistor or thermal diode or diode-connected transistor

− 8 voltage monitor inputs (VBAT is measured internally.)

− 1 chassis open detection input with low power

2. Fan speed controller

− Provides fan on-off and PWM control

− Supports 3 programmable Pulse Width

3. Modulation (PWM) outputs

− 128 steps of PWM modes

− Monitors 5 fan tachometer inputs

4. Smart guardian controller

− Provides programmable fan speed automatic control

− Supports mix-and-match for temperature inputs and fan speed control outputs

− Overrides fan speed controller during catastrophic situations

− Provides over-temperature beep tone warning

5. Floppy disk controller

− Supports two 360K/ 720K/ 1.2M/ 1.44M/ 2.88M floppy disk drives

− Enhanced digital data separator

− 3-Mode drives supported

− Supports automatic write protection via software

6. 48 general-purpose I/O pins

− Input mode supports either switch de-bounce or programmable external IRQ input routing

− Output mode supports 2 sets of programmable LED blinking periods

7. Built-in 32.768 KHz Oscillator

8. Single 24/48 MHz Clock Input