Datasheet

RL78/L12 CHAPTER 11 A/D CONVERTER
R01UH0330EJ0200 Rev.2.00 353
Dec 13, 2013
11.3.6 8-bit A/D conversion result register (ADCRH)
This register is an 8-bit register that stores the A/D conversion result. The higher 8 bits of 10-bit resolution are stored
Note
.
The ADCRH register can be read by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Note If the A/D conversion result is outside the range specified by using the A/D conversion comparison function (the
value specified by the ADRCK bit of the ADM2 register and ADUL/ADLL registers; see Figure 11-8), the result
is not stored.
Figure 11-10. Format of 8-bit A/D Conversion Result Register (ADCRH)
Symbol
ADCRH
Address: FFF1FH After reset: 00H R
76543210
Caution When writing to the A/D converter mode register 0 (ADM0), analog input channel specification
register (ADS), and A/D port configuration register (ADPC), the contents of the ADCRH register may
become undefined. Read the conversion result following conversion completion before writing to
the ADM0, ADS, and ADPC registers. Using timing other than the above may cause an incorrect
conversion result to be read.