HAL856
DATA SHEET
4.5. EMC and ESD
For applications with disturbances by capacitive or
inductive coupling on the supply line or radiated distur-
bances, the application circuits shown in Fig. 4–1 on
page 29 are recommended. Applications with this
arrangement should pass the EMC tests according to
the product standards ISO 7637 part 1 to part 3.
Please contact Micronas for the detailed investigation
reports with the EMC and ESD results.
4.6. Start-Up Behavior
4.6.1. First Operation (Power-Up)
VDD
First PWM/BiPhase-M signal starts
5 V
3 V
VDD,UVmin.
time
tPOD
IOUT (2-wire mode)
Output undefined
Output undefined
BiPhase-M
format
The first period contains
no valid data
PWM format
No valid signal
Fig. 4–4: Power-up diagram
Valid signal
Note: The first PWM-period, respectively the first Biphase-M protocol, is not valid.
32
March 23, 2010; DSH000142_002EN
Micronas
MICRONAS [ MICRONAS ]
