Holtek HT46R003B Manual page 47

HT46R003B
Cost-Effective A/D 8-bit OTP MCU
ACSR Register
Bit
Name TEST
R/W R/W
POR
Bit 7 TEST: For test mode use only
ADONB: A/D Converter module on/off control bit
Bit 6
0: A/D Converter module is on
1: A/D Converter module is off
Note: 1. It is recommended to set ADONB=1 before entering sleep for saving power.
Bit 5~3 Unimplemented, read as "0"
Bit 2~0 ADCS2~ADCS0: Select A/D Converter clock source
000: f
001: f
010: f
011: Undefined
100: f
101: f
110: f
111: Undefined
These three bits are used to select the clock source for the A/D converter.
ADPCR Register
Bit 7
Name —
R/W —
POR —
Bit 7~5 Unimplemented, read as "0"
PCR4: Define PA5 is A/D input or not
Bit 4
0: Not A/D input
1: A/D input, AN4
PCR3: Define PA3 is A/D input or not
Bit 3
0: Not A/D input
1: A/D input, AN3
PCR2: Define PA2 is A/D input or not
Bit 2
0: Not A/D input
1: A/D input, AN2
PCR1: Define PA1 is A/D input or not
Bit 1
0: Not A/D input
1: A/D input, AN1
PCR0: Define PA0 is A/D input or not
Bit 0
0: Not A/D input
1: A/D input, AN0
If PCR4~PCR0 are all zero, the A/D Converter circuit will be off to reduce power
consumption.
Rev. 1.00
7 6 5
ADONB —
R/W —
1 1 —
2. ADONB=1 will power down the A/D Converter module.
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SYS
/8
SYS
/32
SYS
SYS
/4
SYS
/16
SYS
6 5
— —
— —
— —
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4 3 2
— — ADCS�
— — R/W
— — 0
4 3 2
PCR� PCR3 PCR�
R/W R/W R/W
0 0 0
1 0
ADCS1 ADCS0
R/W R/W
0 0
1 0
PCR1 PCR0
R/W R/W
0 0
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