7906 datasheet(419/531 Pages) RENESAS

419 / 531 page

7906 Group User’s Manual Rev.2.0

APPENDIX

20-14

Appendix 2. Control registers

Undefined

–

Bit

7 to 0

15 to 8

Function

At reset

R/W

Reads an A-D conversion result.

The value is “0” at reading.

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)

(b15)

(b8)

s 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)

s When 10-bit resolution mode is selected

Undefined

–

9 to 0

15 to 10

Reads an A-D conversion result.

The value is “0” at reading.

(b15)

(b8)

Bit

Function

At reset

R/W

Reference

12-8

Reference

12-8

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)

s When comparator function is selected

Undefined

–

7 to 0

15 to 8

Any value in the range from “0016” to “FF16” can be set.

The set value is compared with the input voltage. The value is undefined at reading.

The value is “0” at reading.

(b15)

(b8)

Bit

Function

At reset

R/W

Reference

12-8

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.

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