HT45F4MA Datasheet, PDF (112/145 Pages) Holtek Semiconductor Inc – Power Bank Flash MCU

HT45F4MA/HT45FH4MA/HT45FH4MA-1
Power Bank Flash MCU
OCP Comparator Offset Cancellation Function
CMP allows for a commode mode adjustment method of its input offset voltage.
CARS
0
0
1
1
CAOFM
0
1
0
1
S1
ON
OFF
ON
ON
S2
ON
ON
ON
OFF
S3
OFF
ON
OFF
ON
S1
C o m p a r a to r A + in p u t
S2
C o m p a r a to r A - in p u t
S3
CA
C o m p a ra to r A o u tp u t
C A O F0~C A O F5,O C P E N
The calibration steps are as following:
• Set CAOFM= 1 to setup the offset cancellation mode, here S3 is closed
• Set CARS to select which input pin is to be used as the reference voltage – S1 or S2 is closed
• Adjust CAOF0~CAOF5 until the output status changes
• Set CAOFM= 0 to restore the normal Comparator A mode
OVP Comparator Offset Cancellation Function
CMP allows for a commode mode adjustment method of its input offset voltage.
CBRS
0
0
1
1
CBOFM
0
1
0
1
S1
ON
OFF
ON
ON
S2
ON
ON
ON
OFF
S3
OFF
ON
OFF
ON
S1
C o m p a r a to r B + in p u t
S2
C o m p a r a to r B - in p u t
S3
CB
C o m p a ra to r B o u tp u t
C B O F0~C B O F5,O V P E N
The calibration steps are as following:
• Set CBOFM= 1 to setup the offset cancellation mode, here S3 is closed
• Set CBRS to select which input pin is to be used as the reference voltage – S1 or S2 is closed
• Adjust CBOF0~CBOF5 until the output status changes
• Set CBOFM= 0 to restore the normal Comparator B mode
Rev. 1.20
112
December 14, 2016