UPD78F0411GA-GAM-AX Datasheet, PDF (300/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 12 10-BIT SUCCESSIVE APPROXIMATION TYPE A/D CONVERTER (μPD78F041x only)
(3) 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.
ADCRH can be read by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Figure 12-7. Format of 8-Bit A/D Conversion Result Register (ADCRH)
Address: FF07H After reset: 00H R
Symbol
7
6
5
4
3
2
1
0
ADCRH
Cautions 1. When writing to the A/D converter mode register (ADM), analog input channel specification
register (ADS), and A/D port configuration register 0 (ADPC0), the contents of ADCRH may
become undefined. Read the conversion result following conversion completion before
writing to ADM, ADS, and ADPC0. Using timing other than the above may cause an incorrect
conversion result to be read.
2. If data is read from ADCRH, a wait cycle is generated. Do not read data from ADCRH when
the CPU is operating on the subsystem clock and the peripheral hardware clock is stopped.
For details, see CHAPTER 29 CAUTIONS FOR WAIT.
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User’s Manual U18698EJ1V0UD