EMC2103 Standard Microsystems Corporation, EMC2103 Datasheet - Page 15

• Manufacturer Part Number: EMC2103
• Description: Rpm-based Fan Controller with HW Thermal Shutdown
• Manufacturer: Standard Microsystems Corporation

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2103
3.2
Input High/Low Current
Input Capacitance
Clock Frequency
Spike Suppression
Bus free time Start to
Stop
Setup Time: Start
Setup Time: Stop
Data Hold Time
Data Setup Time
Temperature Decode
Output High Voltage
CHARACTERISTIC
Output Low Voltage
Tachometer Setting
Tachometer Range
Input High Voltage
Input Low Voltage
Leakage Current
CHARACTERISTIC
Accuracy
Accuracy
VDD = 3V to 3.6V, T
VDD= 3V to 3.6V, T
SMBus Electrical Specifications (Client Mode)
SYMBOL
Δ
TACH
T
I
V
V
LEAK
V
TACH
V
TRIP
A
A
SYMBOL
OH
OL
IH
IL
t
t
t
t
= -40°C to 125°C Typical values are at T
I
= -40°C to 125°C, all Typical values at T
SU:STA
SU:STP
HD:DAT
SU:DAT
IH /
f
t
C
Table 3.2 Electrical Specifications (continued)
SMB
t
BUF
SP
IN
Table 3.3 SMBus Electrical Specifications
I
IL
VDD -
MIN
480
2.0
0.4
MIN
1.3
0.6
0.6
0.6
0.6
10
RPM Based Fan Controller
DATASHEET
SMBus Interface
Digital I/O pins
SMBus Timing
TYP
4
±2.5
TYP
1
15
MAX
400
±5
10
50
72
6
16000
MAX
0.5
0.8
0.4
±5
±5
2
UNITS
kHz
uA
pF
ns
us
us
us
us
us
UNIT
A
RPM
A
°C
°C
uA
%
V
V
V
V
= 27°C unless otherwise noted.
= 27°C unless otherwise noted.
Device powered or unpowered
T
A
< 85°C
1% external resistor
5% external resistor
8 mA current drive
8 mA current sink
ALERT and SYS_SHDN pins
Device powered or unpowered
T
A
< 85°C
CONDITIONS
CONDITIONS
Revision 0.85 (01-29-08)