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© Andigilog, Inc. 2005
www.andigilog.com
April 2006 - 70A03204
aTS75
4. This specification only indicates how often temperature information is updated to the Temperature Register. The aTS75
can be read at any time without interrupting the temperature conversion process.
5. Accuracy (expressed in °C) = Difference between the aTS75 output temperature and the measured temperature.
Serial Port Timing (TA = 25 °C, VDD = 5V unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
SCL Clock Period
tSCL
1.0
100
μs
SCL Clock Transition Time
tT:LH , tT:HL
300
ns
SCL Clock Low Period
tLOW
0.470
μs
SCL Clock High Period
tHIGH
0.400
50
μs
Bus free time between a Stop and a
new Start Condition
tBUF
1.0
μs
Data in Set-Up to SCL High
tSU:DAT
100
ns
Data Out Stable after SCL Low
tHD:DAT
0
ns
SCL Low Set-up to SDA Low
(Repeated Start Condition)
tSU:STA
100
ns
SCL High Hold after SDA Low (Start
Condition)
tHD:STA
100
ns
SDA High after SCL High (Stop
Condition)
tSU:STO
100
ns
Time in which aTS75 must be
operational after a power-on reset
tPOR
500
ms
Pin Descriptions
SDA
Data In
tHD:STA
tSCL
tSU:STO
tSU:DAT
tHD:DAT
SCL
SDA
Data Out
SCL
10%
10%
90%
tT:LH
tT:HL
tLOW
tHIGH
tBUF
tSU:STA
90%
Pin #
Name
Direction
Description
1
SDA
Input/Output
Serial Data—Open drain I/0-data pin for two-wire interface.
2
SCL
Input
Serial Clock—Clock for 2-wire serial interface.
3
O.S.
Output
Over-Limit Signal—Open drain thermostat output that indicates if the
temperature has exceeded user-programmable limits
4
GND
Supply
Ground
5, 6,7
A0, A1, A2
Input
Address LSBs—User selectable address pins for the 3 lsbs of the
serial interface address.
8
VDD
Supply
Supply Voltage
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