EMC2103 datasheet(83/85 Pages) MICROCHIP

83 / 85 page

RPM-Based Fan Controller with Hardware Thermal Shutdown

Datasheet

 2013 Microchip Technology Inc.

DS0005250A-page 83

Datasheet Revision History

Revision History

REVISION LEVEL & DATE

SECTION/FIGURE/ENTRY

CORRECTION

REV A

Replaces the previous SMSC version Rev. 0.93

Rev. 0.93 (01-08-10)

Table A.6, "Fan Speed

Control Table Example #2"

Recalculated RPM values using Equation 3 to

correct math errors.

Rev. 0.92 (5-17-09)

Section Chapter 2, "Pin

Layout"

Added app note: For the 5V tolerant pins that have

a pull-up resistor (SMCLK, SMDATA, ALERT, and

SYS_SHDN), the voltage difference between VDD

and the 5V tolerant pad must never be more than

3.6V.

Table 3.1, "Absolute

Maximum Ratings"

Updated voltage limits for 5V tolerant pins with

pull-up resistors.

Table 3.2, "Electrical

Specifications"

Qualified leakage current (pull-up voltage < 3.6V)

Rev. 0.91 (04-09-09)

Appendix B "RPM to

Tachometer Count Look Up

Tables"

Section 6.31, "TACH

Reading Register"

Removed

Added reference to AN17.4 “RPM to TACH Counts

Conversion” which includes more information.

Rev. 0.89 (07-02-08)

Table 5.1, "SHDN_SEL Pin

Decode"

Added note for EEPROM loading for EMC2103-4

Section 4.9, "Programming

from EEPROM"

Added section for EEPROM loading description

Table 3.4, "EEPROM Loader

Electrical Specifications"

Added specifications for EEPROM loading

description

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