LAPIS Semiconductor ML610421, Руководство пользователя, Страница: 308 / 437

ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 24 RC Oscillation Type A/D Converter
24 – 4
24.2.2 RC-ADC Counter A Registers (RADCA0–2)
Address: 0F300H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
RADCA0 RAA7 RAA6 RAA5 RAA4 RAA3 RAA2 RAA1 RAA0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
Address: 0F301H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
RADCA1 RAA15 RAA14 RAA13 RAA12 RAA11 RAA10 RAA9 RAA8
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
Address: 0F302H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
RADCA2 RAA23 RAA22 RAA21 RAA20 RAA19 RAA18 RAA17 RAA16
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
RADCA0–2, which serve as a 24-bit binary counter (Counter A), are special function registers (SFRs) used to perform
read/write operations to Counter A itself.
Note:
After writing data into the RC-ADC counter A register, be sure to read it to check that the data has been written
correctly.
When A/D conversion starts after data is written, the value that has been written is read during A/D conversion
(RARUN = 1).
When A/D conversion terminates (RARUN = 0), the count value is read.