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HT46R652 Datasheet(PDF) 24 Page - Holtek Semiconductor Inc

Part # HT46R652
Description  A/D with LCD Type 8-Bit OTP MCU
PDF  47 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46R652 Datasheet(HTML) 24 Page - Holtek Semiconductor Inc

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HT46R652
Rev. 1.00
24
December 19, 2006
Bit No.
Label
Function
0
1
2
ACS0
ACS1
ACS2
Defines the analog channel select.
3
4
5
PCR0
PCR1
PCR2
Defines the port B configuration select. If PCR0, PCR1 and PCR2 are all zero, the ADC circuit is
powered off to reduce power consumption
6
EOCB
Indicates end of A/D conversion. (0 = end of A/D conversion)
Each time bits 3~5 change state the A/D should be initialised by issuing a START signal, other-
wise the EOCB flag may have an undefined condition. See
²Important note for A/D initialisation².
7
START
Starts the A/D conversion. (0
®1®0= start; 0®1= Resets the A/D converter and sets EOCB to
²1²)
ADCR (26H) Register
PCR2
PCR1
PCR0
76543
2
10
0
0
0
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
0
0
1
PB7
PB6
PB5
PB4
PB3
PB2
PB1
AN0
0
1
0
PB7
PB6
PB5
PB4
PB3
PB2
AN1
AN0
0
1
1
PB7
PB6
PB5
PB4
PB3
AN2
AN1
AN0
1
0
0
PB7
PB6
PB5
PB4
AN3
AN2
AN1
AN0
1
0
1
PB7
PB6
PB5
AN4
AN3
AN2
AN1
AN0
1
1
0
PB7
PB6
AN5
AN4
AN3
AN2
AN1
AN0
1
1
1
AN7
AN6
AN5
AN4
AN3
AN2
AN1
AN0
Port B Configuration
ACS2
ACS1
ACS0
Analog Channel
0
0
0
AN0
0
0
1
AN1
0
1
0
AN2
0
1
1
AN3
1
0
0
AN4
1
0
1
AN5
1
1
0
AN6
1
1
1
AN7
Analog Input Channel Selection
Register
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
ADRL
D3
D2
D1
D0
¾¾¾¾
ADRH
D11
D10
D9
D8
D7
D6
D5
D4
Note: D0~D11 is the A/D conversion result data bit LSB~MSB.
ADRL (24H), ADRH (25H) Register



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