mlx90615 Melexis Company, mlx90615 Datasheet - Page 16

• Manufacturer Part Number: mlx90615
• Description: Infra Red Thermometer
• Manufacturer: Melexis Company

8.5.2 Request condition
If PWM is enabled, the MLX90615’s SMBus Request condition is needed to disable PWM and reconfigure
SDA/PWM pin before starting SMBus communication. Once disabled, PWM can only be enabled by
switching the supply Off-On. The MLX90615’s SMBus request condition requires forcing the SCL pin LOW for
a period longer than the request time (t
8.5.3 PWM is disabled
If PWM is disabled by means of EEPROM the SDA/PWM pin is directly used for the SMBus communication
after POR.
3901090615
Rev 001
Figure 13: Request (switch to SMBus) condition
SCL
REQ
). The SDA/PWM line value is ignored in this case.
Page 16 of 30
SMBus Request
t
REQ
Infra Red Thermometer
MLX90615
Data Sheet
28/Aug/2008