Holtek HT45F23A Manual page 80

ADCR Register
• HT45F23A
Bit 7
Name START
R/W R/W
POR 0
Bit 7 START: Start the A/D conversion
0→1→0: start
0→1: reset the A/D converter and set EOCB to "1"
This bit is used to initiate an A/D conversion process. The bit is normally low but if set
high and then cleared low again, the A/D converter will initiate a conversion process.
When the bit is set high the A/D converter will be reset.
Bit 6 EOCB: End of A/D conversion flag
0: A/D conversion ended
1: A/D conversion in progress
This read only flag is used to indicate when an A/D conversion process has completed.
When the conversion process is running the bit will be high.
Bit 5~3 unimplemented, read as "0"
Bit 2~0 ACS2 ~ ACS0: Select A/D channel
000: AN0
001: AN1
010: AN2
011: AN3
100: AN4
101: AN5
110: AN6, connect Op Amp 1 output (A1E)
111: AN7, connect Op Amp 2 output (A2E)
These are the A/D channel select control bits. As there is only one internal hardware
A/D converter each of the eight A/D inputs must be routed to the internal converter
using these bits.
• HT45F24A
Bit 7
Name START
R/W R/W
POR 0
START: Start the A/D conversion
Bit 7
0→1→0: start
0→1: reset the A/D converter and set EOCB to "1"
This bit is used to initiate an A/D conversion process. The bit is normally low but if set
high and then cleared low again, the A/D converter will initiate a conversion process.
When the bit is set high the A/D converter will be reset.
Bit 6 EOCB: End of A/D conversion flag
0: A/D conversion ended
1: A/D conversion in progress
This read only flag is used to indicate when an A/D conversion process has completed.
When the conversion process is running the bit will be high.
Bit 5~4 unimplemented, read as "0"
Rev. 1.40
TinyPower Flash MCU with OPA & Comparators
TM
6 5 4
EOCB — —
R — —
1 — —
6 5 4
EOCB — —
R — —
1 — —
80
HT45F23A/HT45F24A
3 2 1
— ACS2 ACS1
— R/W R/W
— 0 0
3 2 1
ACS3 ACS2 ACS1
R/W R/W R/W
0 0 0
March 29, 2019
0
ACS0
R/W
0
0
ACS0
R/W
0