BH66F5233 Datasheet, PDF (79/137 Pages) Holtek Semiconductor Inc – 24-Bit Delta Sigma A/D MCU

BH66F5233
24-Bit Delta Sigma A/D MCU
• DSDACC Register
Bit
7
6
5
4
3
2
1
0
Name DSDACEN DSDACVRS —
—
—
—
—
—
R/W
R/W
R/W
—
—
—
—
—
—
POR
0
0
—
—
—
—
—
—
Bit 7
Bit 6
Bit 5~0
DSDACEN: D/A Converter Enable or Disable Control Bit
0: Disable
1: Enable
DSDACVRS: D/A Converter Reference Voltage Selection
0: D/A converter reference voltage comes from VIN
1: D/A converter reference voltage comes from VCM
Unimplemented, read as "0"
A/D Converter Data Registers – ADRL, ADRM, ADRH
This device contains an internal 24-bit Delta Sigma A/D converter, it requires three data registers to
store the converted value. These are a high byte register, known as ADRH, a middle byte register,
known as ADRM, and a low byte register, known as ADRL. After the conversion process takes
place, these registers can be directly read by the microcontroller to obtain the digitised conversion
value. D0~D23 are the A/D conversion result data bits.
• ADRL Register
Bit
7
6
5
4
3
2
1
0
Name
D7
D6
D5
D4
D3
D2
D1
D0
R/W
R
R
R
R
R
R
R
R
POR
x
x
x
x
x
x
x
x
"x": unknown
Bit 7~0 A/D conversion data Register bit 7~bit 0
• ADRM Register
Bit
7
6
5
4
3
2
Name
D15
D14
D13
D12
D11
D10
R/W
R
R
R
R
R
R
POR
x
x
x
x
x
x
Bit 7~0 A/D conversion data Register bit 15~bit 8
1
0
D9
D8
R
R
x
x
"x": unknown
• ADRH Register
Bit
7
6
5
4
3
2
1
0
Name
D23
D22
D21
D20
D19
D18
D17
D16
R/W
R
R
R
R
R
R
R
R
POR
x
x
x
x
x
x
x
x
"x": unknown
Bit 7~0 A/D conversion data Register bit 23~bit 16
Rev. 1.00
79
June 30, 2016