HD64F38602R Datasheet, PDF (382/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 17 A/D Converter
17.2 Input/Output Pins
Table 17.1 shows the pin configuration of the A/D converter.
Table 17.1 Pin Configuration
Pin Name
Abbreviation
Analog power supply pin AVcc
I/O
Input
Ground pin
Analog input pin 0
Analog input pin 1
Analog input pin 2
Analog input pin 3
Analog input pin 4
Analog input pin 5
External trigger input pin
Vss
AN0
AN1
AN2
AN3
AN4
AN5
ADTRG
Input
Input
Input
Input
Input
Input
Input
Input
Function
Power supply and reference voltage of
analog part
Ground and reference voltage
Analog input pins
External trigger input that controls the A/D
conversion start.
17.3 Register Descriptions
The A/D converter has the following registers.
• A/D result register (ADRR)
• A/D mode register (AMR)
• A/D start register (ADSR)
17.3.1 A/D Result Register (ADRR)
ADRR is a 16-bit read-only register that stores the results of A/D conversion. The data is stored in
the upper 10 bits of ADRR. ADRR can be read by the CPU at any time, but the ADRR value
during A/D conversion is undefined. After A/D conversion is completed, the conversion result is
stored as 10-bit data, and this data is retained until the next conversion operation starts. The initial
value of ADRR is undefined. This register must be read in words.
Rev. 3.00 May 15, 2007 Page 350 of 516
REJ09B0152-0300