M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 557

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(4) A/D converter 2 control register 3 (ADA2CTL3)
Caution The relationship between the analog input pin (ANI2n) and A/D2 conversion result register n
The ADA2CTL3 register is an 8-bit register that specifies the A/D conversion buffer mode and operation mode.
This register can be read or written in 8-bit or 1-bit units. However, writing the ADA2CTL3 register during A/D
conversion, including writing the same value, is prohibited.
conversion, the conversion result of A/D2 conversion result register n (ADA2CRn) and the conversion
operation cannot be guaranteed. To write data to the ADA2CTL3 register, be sure to stop the conversion once
(ADA2CTL0.ADA2CE bit = 0), and then re-set the conversion conditions.
Reset sets this register to 00H.
(ADA2CRn) in each buffer mode is as follows (n = 0 to 7).
• In 1-buffer mode
• In 4-buffer mode
ADA2CTL3
One analog input pin (ANI2n) specified by the ADA2CTL2 register corresponds to one
ADA2CRn register (see Table 13-2).
The conversion result of one analog input pin (ANI2n) of the ANI20 to ANI23 pins specified
by the ADA2CTL2 register is stored in the ADA2CR0 to ADA2CR3 registers, and the result of
one of the ANI24 to ANI247 pins is stored in the ADA2CR4 to ADA2CR7 registers (see Figure
13-2).
After reset: 00H
ADA2BS
ADA2BS
ADA2TS
0
1
0
1
ADA2TS
1-buffer mode
4-buffer mode
Serial mode
Parallel mode
R/W
CHAPTER 13 A/D CONVERTER 2
User’s Manual U16543EJ4V0UD
Address: FFFFF243H
0
Operation mode specification
Buffer mode specification
0
0
If data is written to the register during A/D
0
0
0
555