ASC7611 ETC2 [List of Unclassifed Manufacturers], ASC7611 Datasheet - Page 7

• Manufacturer Part Number: ASC7611
• Description: HARDWARE MONITOR WITH INTEGRATED FAN CONTROL
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

Serial Port Timing
(T
© Andigilog, Inc. 2006
SCL Operating Frequency
SCL Clock Transition Time
SCL Clock Low Period
SCL Clock High Period
Bus free time between a Stop and a new Start Condition
Data in Set-Up to SCL High
Data Out Stable after SCL Low
SCL Low Set-up to SDA Low (Repeated Start Condition)
SCL High Hold after SDA Low (Start Condition)
SDA High after SCL High (Stop Condition)
Time in which aSC7611 must be operational after a power-on reset
SMBus Time-out before device communication interface reset
A
= 25 °C, V
Notes (cont’d):
5. These specifications are guaranteed only for the test conditions listed.
6. The accuracy of the aSC7611 is guaranteed when using the thermal diode of Intel Pentium 4, 65nm processors or any thermal
7. Accuracy (expressed in °C) = Difference between the aSC7611 reported output temperature and the temperature being
8. TUE, total unadjusted error, includes ADC gain, offset, linearity and reference errors. TUE is defined as the “actual
9. This specification is provided only to indicate how often temperature and voltage data is updated. The aSC7611 can be read at
10. Holding the SMBCLK lines low for a time interval greater than t
achieve a given code transition minus the “theoretical
voltage is greater than the theoretical input voltage for a given code. If the theoretical input voltage was applied to an aSC7611
that has positive error, the aSC7611’s reading would be less than the theoretical.
any time without regard to conversion state (and will yield last conversion result).
setting the SMBDAT pin to a high impedance state.
diode with a non-ideality of 1.009 and series resistance of 4.52Ω. When using a 2N3904 type transistor or an CPU with a
different non-ideality the error band will be typically shifted depending on transistor diode or CPU characteristics. See
applications section for details.
measured. Local temperature accuracy does not include the effects of self-heating. The rise in temperature due to self-heating
is the product of the internal power dissipation of the aSC7611 and the thermal resistance. See (Note 3) for the thermal
resistance to be used in the self-heating calculation.
DD
= 3.3V unless otherwise noted, Guaranteed by design, not production tested)
SCL
SDA
Parameter
Data Out
t
HD:STA
SDA
t
SCL
BUF
t
LOW
www.andigilog.com
V
t
in
SU:DAT
- 7 -
t
HIGH
“ for the same code. Therefore, a positive error indicates that the input
10
TIMEOUT
t
will reset the aSC7611’s SMBus state machine, therefore
T:LH
t
f
t
t
t
t
t
t
t
t
t
10
t
t
SU:STA
SCL
T:LH
LOW
HIGH
BUF
SU:DAT
HD:DAT
SU:STA
HD:STA
SU:STO
POR
TIMEOUT
Symbol
90
t
HD:DAT
, t
T:HL
90
10
t
T:HL
100
300
600
600
600
Min
1.3
0.6
1.3
25
October 2006 - 70A05007
Typ
aSC7611
Max
400
300
500
50
35
t
SU:STO
V
in
” to
Units
kHz
ms
ms
ns
μs
μs
μs
ns
ns
ns
ns
ns