MLX90614ESF-AAC MELEXIS [Melexis Microelectronic Systems], MLX90614ESF-AAC Datasheet - Page 15

• Manufacturer Part Number: MLX90614ESF-AAC
• Description: Single and Dual Zone Infra Red Thermometer in TO-39
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

8.4.3.1.1 Read Word (depending on the command – RAM or EEPROM)
8.4.3.1.2 Write Word (depending on the command – RAM or EEPROM)
8.4.4 AC specification for SMBus
8.4.4.1 Timing
The MLX90614 meets all the timing specifications of the SMBus [1]. The maximum frequency of the
MLX90614 SMBus is 100 KHz and the minimum is 10 KHz.
The specific timings in MLX90614’s SMBus are:
SMBus Request (t
mode to SMBus mode;
Timeout L is the maximum allowed time for SCL to be low. After this time the MLX90614 will reset its
communication block and will be ready for new communication;
Timeout H is the maximum time for which it is allowed for SCL to be high during communication. After this
time MLX90614 will reset its communication block assuming that the bus is idle (according to the SMBus
specification).
Tsuac(SD) is the time after the eighth falling edge of SCL that MLX90614 will force PWM/SDA low to
acknowledge the last received byte.
Thdac(SD) is the time after the ninth falling edge of SCL that MLX90614 will release the PWM/SDA (so the
MD can continue with the communication).
Tsuac(MD) is the time after the eighth falling edge of SCL that MLX90614 will release PWM/SDA (so that the
MD can acknowledge the last received byte).
Thdac(MD) is the time after the ninth falling edge of SCL that MLX90614 will take control of the PWM/SDA
(so it can continue with the next byte to transmit).
3901090614
Rev 003
………..
S
………..
1
Slave Address
Data Byte Low
REQ
7
Data Byte Low
) is the time that the SCL should be forced low in order to switch MLX90614 from PWM
8
S
1
Slave Address
8
Wr
1
A
1
7
A
1
Figure 6: SMBus write word format
Figure 5: SMBus read word format
A
Data Byte High
1
Command
Data Byte High
Wr
8
1
Page 15 of 40
8
A
1
8
A
Command
1
A Sr
1
Infra Red Thermometer in TO-39
8
A
1
1
MLX90614 family
PEC
Slave Address
8
PEC
A
1
7
8
Single and Dual Zone
………..
A
1
1
P
Rd
A
1
1
A
P
1
1
Data Sheet
03/Oct/2007
………..