Data Sheet

MAX6675
Cold-Junction-Compensated K-Thermocouple-
to-Digital Converter (0°C to +1024°C)
6 _______________________________________________________________________________________
CS
SCK
SO
D15
D14
D13 D12
D11
D10
D9
D8
D7 D6
D5
D4
D3
D2
D1
D0
Figure 1a. Serial Interface Protocol
D15 D0D1D2D3
SCK
SO
t
DV
t
CSS
t
DO
CS
t
TR
t
CH
t
CL
Figure 1b. Serial Interface Timing
BIT
DUMMY
SIGN BIT
12-BIT
TEMPERATURE READING
THERMOCOUPLE
INPUT
DEVICE
ID
STATE
Bit 15
14131211109876543
210
0
MSB LSB
0
Three-
state
Figure 2. SO Output