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