Datasheet

���������������������������������������������������������������� Maxim Integrated Products 15
MAX31826
1-Wire Digital Temperature Sensor
with 1Kb Lockable EEPROM
Figure 7. ROM Commands Flowchart
F0h
SEARCH
ROM?
N
BIT 0
MATCH?
BIT 0
MATCH?
CCh
SKIP
ROM?
N
55h
MATCH
ROM?
N
NN
33h
READ
ROM?
N
Y
Y Y
Y
Y
MASTER Tx
BIT 0
MAX31826 Tx
FAMILY CODE
1 BYTE
MASTER Tx
FUNCTION COMMAND
MAX31826 Tx
SERIAL NUMBER
6 BYTES
MAX31826 Tx
CRC BYTE
MASTER Tx
ROM COMMAND
MAX31826 Tx
PRESENCE PULSE
MASTER Tx
RESET PULSE
INITIALIZATION
SEQUENCE
MAX31826 Tx BIT 0
MAX31826 Tx BIT 0
MASTER Tx BIT 0
MASTER Tx
BIT 63
MAX31826 Tx BIT 63
MAX31826 Tx BIT 63
MASTER Tx BIT 63
BIT 1
MATCH?
BIT 1
MATCH?
NN
BIT 63
MATCH?
BIT 63
MATCH?
NN
Y Y
Y Y
MASTER Tx
BIT 1
MAX31826 Tx BIT 1
MAX31826 Tx BIT 1
MASTER Tx BIT 1
Y