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Section 14 A/D Converter
14.3.1
A/D Data Registers A to H (ADDRA to ADDRH)
There are eight 16-bit read-only ADDR registers, ADDRA to ADDRH, used to store the results of
A/D conversion. The ADDR registers, which store a conversion result for each channel, are shown
in table 14.2.
The converted 10-bit data is stored in bits 15 to 6. The lower 6-bit data is always read as 0.
The data bus between the CPU and the A/D converter has a 16-bit width. The data can be read
directly from the CPU. ADDR must not be accessed in 8-bit units and must be accessed in 16-bit
units.
Bit
15
14
Bit Name
Initial Value
0
0
R/W
R
R
Table 14.2 Analog Input Channels and Corresponding ADDR Registers
Analog Input Channel
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Rev.2.00 Jun. 28, 2007 Page 528 of 666
REJ09B0311-0200
13
12
11
10
0
0
0
0
R
R
R
R
A/D Data Register Which Stores Conversion Result
ADDRA
ADDRB
ADDRC
ADDRD
ADDRE
ADDRF
ADDRG
ADDRH
9
8
7
6
0
0
0
0
R
R
R
R
5
4
3
2
0
0
0
0
R
R
R
R
1
0
0
0
R
R
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