Owner manual

DS1720
030598 9/12
READ DATA TRANSFER Figure 4
RST
CLK
DQ
t
CC
t
CDH
t
DC
t
CDD
t
CDZ
t
CCH
LSB
DATA
MSB
DATA
017
PROTOCOL
t
RDZ
WRITE DATA TRANSFER Figure 5
RST
CLK
DQ
PROTOCOL
LSB
DATA
MSB
DATA
017
t
CC
t
DC
t
CDH
t
CH
t
CL
t
CWH
t
F
t
CCH
t
DC
t
DCH
t
R
NOTE: t
CL
, t
CH
, t
R
, and t
F
apply to both read and write data transfer.
RELATED APPLICATION NOTES
The following Application Notes can be applied to the
DS1720. These notes can be obtained from the Dallas
Semiconductor “Application Note Book”, via our web-
site at http:\\www.dalsemi.com/, or through our faxback
service at (972) 371–4441.
Application Note 67
: “Applying and Using the DS1620
in Temperature Control Applications”
Application Note 85
: “Interfacing the DS1620 to the Mo-
torola SPI Bus”
Application Note 105
: “High Resolution Temperature
Measurement with Dallas Direct–to–Digital Tempera-
ture Sensors”
Sample DS1720 subroutines that can be used in con-
junction with AN105 can be downloaded from the web-
site or our Anonymous FTP Site.