SMBus Fan Control with 1°C Accurate Temperature Monitoring
Datasheet
Table 3.2 Electrical Specifications (continued)
VDD = 3.0V to 3.6V, TA = 0oC - 85oC, Typical values are at TA = 27°C unless otherwise noted
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS
Total Unadjusted Error TUE
DAC Resolution
5
6
%
Measured at 3/4 full scale
bits
us
Settling Time to within
1%
tSETTLE
40
Capacitive Load = 100pF
Digital I/O pins (PWM, SMDATA, SMCLK, ALERT / TACH)
Output High Voltage
Output Low Voltage
VOH
VDD
0.3
-
V
8mA Current Source
VOL
0.3
10
V
8mA Current Sink
Output Leakage
Current
ILEAK
uA
3.3
SMBus Client Electrical Specifications
Table 3.3 SMBus Electrical Specifications
VDD = 3.0V to 3.6V, TA = 0oC - 85oC, Typical values are at TA = 27°C unless otherwise noted
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
SMBus Interface
Input High Voltage
Input Low Voltage
Input High/Low Current
Hysteresis
VIH
2.1
-1
V
VIL
0.8
V
IIH / IIL
1
uA
mV
pF
mA
500
Input Capacitance
Output Low Sink Current
CIN
5
8
VOL = 0.4V
SMBus Timing
Clock Frequency
fSMB
tSP
10
400
50
kHz
ns
Spike Suppression
Bus free time Start to
Stop
tBUF
1.3
us
Hold Time: Start
Setup Time: Start
Setup Time: Stop
Data Hold Time
Data Setup Time
tHD:STA
tSU:STA
tSU:STO
tHD:DAT
tSU:DAT
0.6
0.6
0.6
0.3
100
us
us
us
us
ns
SMSC EMC2101
Revision 2.53 (03-13-07)
DATAS11HEET
SMSC [ SMSC CORPORATION ]
