MLX90614_15 Datasheet, PDF (16/51 Pages) Melexis Microelectronic Systems – Single and Dual Zone Infra Red Thermometer in TO-39

MLX90614 family
Single and Dual Zone
Infra Red Thermometer in TO-39
REPEATED START, STOP, ACK, and NACK bits. The PEC is a CRC-8 with polynomial X8+X2+X1+1. The
Most Significant Bit of every byte is transferred first.
8.4.3.1.1 Read Word (depending on the command – RAM or EEPROM)
1
7
S Slave Address
11
Wr A
8
Command
11
7
11
A Sr Slave Address Rd A ………..
8
1
8
1
……….. Data Byte Low A Data Byte High A
8
PEC
11
AP
Figure 5: SMBus read word format
8.4.3.1.2 Write Word (depending on the command – RAM or EEPROM)
1
7
S Slave Address
11
Wr A
8
Command
1
A ………..
8
1
8
1
……….. Data Byte Low A Data Byte High A
8
PEC
11
AP
8.4.4 Bit transfer
Figure 6: SMBus write word format
Changing data
SDA
SCL
3901090614
Rev 009
Sampling data
Figure 7: Recommended timing on SMBus
Page 16 of 52
Data Sheet
June 29, 2015