參數(shù)資料
型號: HT46C23
廠商: Holtek Semiconductor Inc.
英文描述: A/D Type 8-Bit MCU
中文描述: 的A / D型8位微控制器
文件頁數(shù): 18/48頁
文件大?。?/td> 348K
代理商: HT46C23
HT46R23/HT46C23
Rev. 1.60
18
May 3, 2004
Label
(ACSR)
Bits
Function
ADCS0
ADCS1
0
1
Selects the A/D converter clock source
00= system clock/2
01= system clock/8
10= system clock/32
11= undefined
2~6 Unused bit, read as 0
TEST
7
For test mode used only
ACSR Register
Label
(ADCR)
Bits
Function
ACS0
ACS1
ACS2
0
1
2
Defines the analog channel select.
PCR0
PCR1
PCR2
3
4
5
Defines the port B configuration select.
If PCR0, PCR1 and PCR2 are all zero,
the ADC circuit is power off to reduce
power consumption
EOCB
6
Provides response at the end of the
A/D conversion.
(0= end of A/D conversion)
START
7
Starts the A/D conversion. (0
start; 0
1= reset A/D converter)
1
0=
ADCR Register
ACS2
ACS1
ACS0
Analog Channel
0
0
0
A0
0
0
1
A1
0
1
0
A2
0
1
1
A3
1
0
0
A4
1
0
1
A5
1
1
0
A6
1
1
1
A7
Analog Input Channel Selection
When the A/D conversion is completed, the A/D inter-
rupt request flag is set. The EOCB bit is set to 1 when
the START bit is set from 0 to 1 .
Register
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
ADRL
D1
D0
ADRH
D9
D8
D7
D6
D5
D4
D3
D2
Note:
D0~D9 is A/D conversion result data bit
LSB~MSB.
PCR2
PCR1
PCR0
7
6
5
4
3
2
1
0
0
0
0
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
0
0
1
PB7
PB6
PB5
PB4
PB3
PB2
PB1
A0
0
1
0
PB7
PB6
PB5
PB4
PB3
PB2
A1
A0
0
1
1
PB7
PB6
PB5
PB4
PB3
A2
A1
A0
1
0
0
PB7
PB6
PB5
PB4
A3
A2
A1
A0
1
0
1
PB7
PB6
PB5
A4
A3
A2
A1
A0
1
1
0
PB7
PB6
A5
A4
A3
A2
A1
A0
1
1
1
A7
A6
A5
A4
A3
A2
A1
A0
Port B Configuration
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