HT66FM5230 Datasheet, PDF (99/176 Pages) Holtek Semiconductor Inc – Brushless DC Motor Flash Type 8-Bit MCU

HT66FM5230
Brushless DC Motor Flash Type 8-Bit MCU
The accompanying block diagram shows the overall internal structure of the A/D converter, together
with its associated registers.
Dela� Register
ADDL
PW� Period
Interrupt signal
PW� dut�
Interrupt signal
�UX
Start Convert
Dela� Time
�UX
PWIS bit
DLSTR bit
Dela� on/off control
ADSTR bit
PA6/AN0
ADSTS bit
PA7/AN1
PA1/AN�
PB0/AN�
PB1/AN4
PB�/AN5
Programmable
Gain Amplifier
AP
ACS�~ACS0
High Boundar� Value
A/D Conversion
Start Signal
ADHVDH
ADHVDL
ADC
ADRH
ADRL
AD
HL/LV
Trigger
Int_AD_EOC
EOCB bit
ADLVDH
ADLVDL
Low Boundar� Value
Compare Converted
Value with Upper and
Lower Limits
Int_AHL_Lim
Interrupt Signal
OPAVS0
OPAVS�
Gain Control Bits
Gain = X1/X5/X10/X�0
ADCHVE
ADCLVE
Comparison T�pe Control Bits
A/D Converter Structure
A/D Converter Register Description
Overall operation of the A/D converter is controlled using several registers. A read only register pair
ADRL/ADRH exists to store the ADC data 10-bit value. The ADLVDL/ADLVDH and ADHVDL/
ADHVDH registers are used to store the boundary limit values of the ADC interrupt trigger while
the ADDL register is used to setup the start conversion delay time. The remaining registers are
control registers which setup the operating and control function of the A/D converter.
Register
Name
ADRL
ADRH
ADCR0
ADCR1
ADCR2
ADDL
ADLVDL
ADLVDH
ADHVDL
ADHVDH
7
D7
—
ADSTR
ADSTS
—
D7
D7
—
D7
—
6
D6
—
EOCB
DLSTR
—
D6
D6
—
D6
—
5
D5
—
ADOFF
PWIS
—
D5
D5
—
D5
—
Bit
4
3
D4
D3
—
—
—
—
ADCHVE ADCLVE
—
—
D4
D3
D4
D3
—
—
D4
D3
—
—
2
D2
—
ACS2
ADCK2
—
D2
D2
—
D2
—
1
D1
D9
ACS1
ADCK1
PWDIS1
D1
D1
D9
D1
D9
0
D0
D8
ACS0
ADCK0
PWDIS0
D0
D0
D8
D0
D8
A/D Converter Register List
Rev. 1.00
99
May 13, 2013