Rev. 1.00
74
August 29, 2018
Rev. 1.00
75
August 29, 2018
HT45F6530
AC Voltage Regulator Flash MCU
HT45F6530
AC Voltage Regulator Flash MCU
• SADC0 Register
Bit
7
6
5
4
3
2
1
0
Name
START
ADBZ
ADCEN
ADRFS
SACS3
SACS2
SACS1
SACS0
R/W
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7
START
: Start the A/D conversion
0→1→0: Start
This bit is used to initiate an A/D conversion process. The bit is normally low but if set
high and then cleared low again, the A/D converter will initiate a conversion process.
Bit 6
ADBZ
: A/D converter busy flag
0: No A/D conversion is in progress
1: A/D conversion is in progress
This read only flag is used to indicate whether the A/D conversion is in progress or
not. When the START bit is set from low to high and then to low again, the ADBZ flag
will be set to 1 to indicate that the A/D conversion is initiated. The ADBZ flag will be
cleared to 0 after the A/D conversion is complete.
Bit 5
ADCEN
: A/D converter function enable control
0: Disable
1: Enable
This bit controls the A/D internal function. This bit should be set to one to enable
the A/D converter. If the bit is set low, then the A/D converter will be switched off
reducing the device power consumption. When the A/D converter function is disabled,
the contents of the A/D data register pair known as SADOH and SADOL will be
unchanged.
Bit 4
ADRFS
: A/D converter data format select
0: A/D converter data format → SADOH=D[11:4]; SADOL=D[3:0]
1: A/D converter data format → SADOH=D[11:8]; SADOL=D[7:0]
This bit controls the format of the 12-bit converted A/D value in the two A/D data
registers. Details are provided in the A/D data register section.
Bit 3~0
SACS3~SACS0
: A/D converter external analog channel input select
0000: AN0
0001: AN1
0010: AN2
0011: AN3
0100: AN4
0101: AN5
0110~1111: undefined, input floating if selected
These bits are used to select which external analog input channel is to be converted.
When the external analog input channel is selected, the SAINS bit field must be set to
“0000”, “0100” or “11xx”. Details are summarised in the “A/D Converter Input Signal
Selection” table.