Isolated, Digital Output, Power Monitoring IC
with Zero-Crossing Detection, Overcurrent and Overvoltage Flagging
ACS37800
Register 0x2D
Bits
0
Name
Description
zerocrossout
faultout
Zero-crossing output
Current fault output
Current fault output latched
Overvoltage flag
1
2
faultlatched
overvoltage
undervoltage
3
4
Undervoltage flag
zerocrossout
overvoltage
Flag for the zero-crossing events. This will be present and active
regardless of DIO_0_sel and DIO_1_sel. This flag will still fol-
low the halfcycle_en and squarewave_en settings.
Flag for the overvoltage events. This will be present and active
regardless of DIO_0_sel and DIO_1_sel and will only be set
when fault is present.
faultout
undervoltage
Flag for the overcurrent events. This will be present and active
regardless of DIO_0_sel and DIO_1_sel and will only be set
when fault is present.
Flag for the undervoltage events. This will be present and active
regardless of DIO_0_sel and DIO_1_sel and will only be set
when fault is present.
faultlatched
Flag for the overcurrent events. This bit will latch and will remain
1 as soon as an overcurrent event is detected. This can be reset by
writing a 1 to this field. This will be present and active regardless
of DIO settings.
Register 0x2F
Bits
Name
Description
Access code register:
Customer code: 0x4F70656E
31:0
access_code
Register 0x30
Bits
Name
Description
Customer write access enabled.
customer_access 0 = Non-Customer mode.
1 = Customer mode.
0
37
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
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