UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 358

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(3) 8-bit A/D conversion result register (ADCRH)
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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.
Cautions 1. When writing to the A/D converter mode register (ADM), analog input channel specification
2. If data is read from ADCRH, a wait cycle is generated. Do not read data from ADCRH when
Address: FF19H
ADCRH
Symbol
register (ADS), and A/D port configuration register (ADPC), the contents of ADCRH may
become undefined. Read the conversion result following conversion completion before
writing to ADM, ADS, and ADPC. Using timing other than the above may cause an incorrect
conversion result to be read.
the CPU is operating on the subsystem clock and the peripheral hardware clock is stopped.
For details, see CHAPTER 32 CAUTIONS FOR WAIT.
Figure 11-7. Format of 8-Bit A/D Conversion Result Register (ADCRH)
7
After reset: 00H
6
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 11 A/D CONVERTER
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R
4
3
2
1
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