Ds7505 digital thermometer and thermostat, Pin description – Rainbow Electronics DS7505 User Manual
Page 4
DS7505
Digital Thermometer and Thermostat
4
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Pin Description
PIN
NAME
FUNCTION
1
SDA
Data Input/Output. For 2-wire serial communication port. Open drain.
2
SCL
Clock Input. For 2-wire serial communication port.
3
O.S.
Thermostat Output. Open drain.
4 GND
Ground
5 A2
Address
Input
6 A1
Address
Input
7 A0
Address
Input
8
VDD
Supply Voltage. +1.7V to +3.7V supply pin.
SDA
SCL
SR
P
S
t
F
t
LOW
t
HD:STA
t
HD:DAT
t
SU:STA
t
SU:STO
t
HD:STA
t
SP
t
R
t
SU:DAT
t
R
t
F
t
BUF
Figure 1. Timing Diagram
OVERSAMPLING
MODULATOR
DIGITAL
DECIMATOR
PRECISION
REFERENCE
ADDRESS
AND
I/O CONTROL
VDD
CONFIGURATION
REGISTER
TEMPERATURE
REGISTER
SCL
SDA
A0
A1
A2
O.S.
GND
T
OS
AND T
HYST
REGISTERS
THERMOSTAT
COMPARATOR
DS7505
R
F
Figure 2. Block Diagram