Adc Registers - NEC V850ES/F 3-L Series User Manual

A/D Converter (ADC)

19.3 ADC Registers

(1)
After reset: 00H
7
ADAnM0 ADAnCE
The A/D Converter is controlled by the following registers:
• A/D Converter mode registers 0, 1, 2 (ADAnM0, ADAnM1, ADAnM2)
• A/D Converter channel specification register 0 (ADAnS)
• Power-fail compare mode register (ADAnPFM)
The following registers are also used:
• A/D conversion result register n (ADAnCRm)
• A/D conversion result register nH (ADAnCRmH)
• Power-fail compare threshold value register (ADAnPFT)
ADAnM0 - ADC mode register 0
The ADAnM0 register is an 8-bit register that specifies the operation mode and
controls conversion operations.
This register can be read or written in 8-bit or 1-bit units. However, bit 0 is read-
only.
Reset input clears this register to 00H.
R/W Address:
6 5
ADAnPS ADAnMD1
ADAnCE A/D conversion control
0 Stops conversion
1 Starts conversion
ADAnPS A/D conversion control
0 A/D power OFF
1 A/D power ON
Note: The A/D Converter needs a stabilization time after A/D power on. Only if the
specified stabilization time after ADAnPS = 1 (power on) is taken, the first
conversion result is valid.
ADAnMD1 ADAnMD0
0 0
0 1
1 0
1 1
User's Manual U18743EE1V2UM00
ADA0M0 FFFFF200H
4 3
ADAnMD0 ADAnETS1 ADAnETS0
Specification of A/D conversion operation mode
Continuous select mode
Continuous scan mode
One-shot select mode
One-shot scan mode
Chapter 19
2 1 0
ADAnTMD ADAnEF
667