A/D Converter - NEC V850ES/DJ2 User Manual

2.10 A/D Converter

Features
The A/D converter converts analog input signals into digital values, has a resolution of 10 bits, and can
handle 16 analog input signal channels (ANI0 to ANI15).
The A/D converter has the following features.
• 10-bit resolution
• 16 channels
• Successive approximation method
• Operating voltage: AV
• Analog input voltage: 0 V to AV
• The following functions are provided as operation modes.
• Continuous select mode
• Continuous scan mode
• One-shot scan mode
• The following functions are provided as trigger modes.
• Software trigger mode
• External trigger mode (external, 1)
• Timer trigger mode
• Power-fail monitor function (conversion result compare function)
INTTP2CC0
INTTP2CC1
ADTRG
ADA0ETS0 bit
ADA0ETS1 bit
Chapter 2 V850ES/FG2 Introduction
= 4.0 to 5.5 V
REF0
REF0
Figure 2-12: Block Diagram of A/D Converter
ANI0
Sample & hold circuit
ANI1
ANI2
:
:
ANI13
ANI14
ANI15
Edge
Controller
detection
ADA0M0 ADA0M1 ADA0M2 ADA0S
Preliminary User's Manual U17763EE1V1UD00
ADA0CE bit
ADA0CE bit
Voltage
comparator
SAR
ADA0CR0
ADA0CR1
ADA0CR2
•
•
•
•
•
•
ADA0CR13
ADA0CR14
ADA0CR15
Internal bus
AV
REF0
D/A converter
AV
SS
49