APPENDIX
Appendix 2. Control registers
✽✽When 8-bit resolution mode is selected
A-D register 0 (Addresses 2116, 2016)
A-D register 1 (Addresses 2316, 2216)
A-D register 2 (Addresses 2516, 2416)
A-D register 3 (Addresses 2716, 2616)
A-D register 4 (Addresses 2916, 2816)
(b8)
b0
(b15)
b7
b7
b0
Bit
Function
At reset R/W
Reference
12-8
7 to 0 Reads an A-D conversion result.
15 to 8 The value is “0” at reading.
Undefined RO
0
–
✽✽When 10-bit resolution mode is selected
A-D register 0 (Addresses 2116, 2016)
A-D register 1 (Addresses 2316, 2216)
A-D register 2 (Addresses 2516, 2416)
A-D register 3 (Addresses 2716, 2616)
A-D register 4 (Addresses 2916, 2816)
(b8)
b0 b7
(b15)
b7
b0
Function
Bit
At reset R/W
Undefined RO
Reference
12-8
9 to 0 Reads an A-D conversion result.
15 to 10 The value is “0” at reading.
0
–
✽✽When comparator function is selected
A-D register 0 (Addresses 2116, 2016)
A-D register 1 (Addresses 2316, 2216)
A-D register 2 (Addresses 2516, 2416)
A-D register 3 (Addresses 2716, 2616)
A-D register 4 (Addresses 2916, 2816)
(b8)
b0 b7
(b15)
b7
b0
Bit
Function
At reset R/W
Undefined RO
Reference
Any value in the range from “0016” to “FF16” can be set.
12-8
7 to 0
The set value is compared with the input voltage. The value is undefined at reading.
15 to 8
0
–
The value is “0” at reading.
Note: When the comparator function is selected, writing to and reading from the A-D register i must be performed while the A-D
converter halts.
7906 Group User’s Manual Rev.2.0
20-14
RENESAS [ RENESAS TECHNOLOGY CORP ]
