EMC2113 datasheet(15/88 Pages) MICROCHIP

15 / 88 page

RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

Datasheet

 2013 Microchip Technology Inc.

DS20005251A-page 15

4.2

SMBus Electrical Specifications

PWM Input Detection

PWM Frequency

fPWM_IN

150

40k

TRIP_SET Measurement

TRIP_SET Decode

Accuracy

VTRIP

±0.5

±1

°C

1% resistor connected to ground

TRIP_SET Decode

Accuracy

VTRIP

±1

±2

°C

5% resistor connected to ground

Digital I/O pins

Input High Voltage

VIH

2.0

Input Low Voltage

VIL

0.8

Output High Voltage

VOH

VDD -

0.4

8 mA current drive

Output Low Voltage

VOL

0.4

8 mA current sink

Leakage Current

ILEAK

±5

ALERT and SYS_SHDN pins

Device powered or unpowered

TA < 85°C

Table 4.3 SMBus Electrical Specifications

VDD= 3V to 3.6V, TA = -40°C to 125°C Typical values are at TA = 27°C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNITS

CONDITIONS

SMBus Interface

Input High/Low Current

IIH / IIL

±5

Device powered or unpowered

TA < 85°C

Input Capacitance

CIN

410

SMBus Timing

Clock Frequency

fSMB

400

kHz

Spike Suppression

tSP

Bus free time Start to

Stop

tBUF

1.3

Setup Time: Start

tSU:STA

0.6

Setup Time: Stop

tSU:STP

0.6

Data Hold Time

tHD:DAT

0.6

Data Setup Time

tSU:DAT

0.6

Table 4.2 Electrical Specifications (continued)

VDD = 3V to 3.6V, TA = -40°C to 125°C, all Typical values at TA = 27°C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNIT

CONDITIONS

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