UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 292

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

(3) 8-bit A/D conversion result register (ADCRH)
292
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
Address: FF19H
ADCRH
Symbol
2. If data is read from ADCRH, a wait cycle is generated. Do not read data from ADCRH
specification register (ADS), and A/D port configuration register (ADPC), the contents of
ADCRH may become undefined.
completion before writing to ADM, ADS, and ADPC. Using timing other than the above
may cause an incorrect conversion result to be read.
when the CPU is operating on the subsystem clock and the peripheral hardware clock is
stopped. For details, see CHAPTER 31 CAUTIONS FOR WAIT.
Figure 13-7. Format of 8-Bit A/D Conversion Result Register (ADCRH)
7
After reset: 00H
6
CHAPTER 13 A/D CONVERTER
User’s Manual U17554EJ4V0UD
5
R
4
Read the conversion result following conversion
3
2
1
0