MN101C115 Datasheet, PDF (132/170 Pages) Panasonic Semiconductor – Request for your special attention and precautions in using the technical information and semiconductors described in this book

Chapter 6 A/D Conversion Functions
6-3-2 A/D Control Register (ANCTR)
This readable and writable 8-bit register controls the operation of the A/D
converter.
ANCTR0
7
6
5
4
3
2
1
0
ANSH1 ANSH0 ANCK1 ANCK0 ANLADE ANCHS2 ANCHS1 ANCHS0
(at reset: XXXX0XXX)
ANCHS2 ANCHS1 ANCHS0 Analog input selection
0 AN0
0
1 AN1
0
0 AN2
1
1 AN3
0 AN4
0
1 AN5
1
0 AN6
1
1 AN7
ANLADE
A/D ladder resistor control
0 A/D ladder resistors off
1 A/D ladder resistors on
ANCK1
0
1
ANCK0
0
1
0
1
A/D conversion
clock selection∗1
fs/2
fs/4
fs/8
Use proh bited
ANSH1
0
1
ANSH0
0
1
0
1
Sample and
hold time setting∗2
TAD × 2
TAD × 6
TAD × 18
Use proh bited
(1) A/D control register 0 (ANCTR0)
∗1:Specify that where the period of the A/D conversion clock
is greater than 800ns.
∗2:Sample-and-hold time is determined by the analog input
impedance. TAD indicates the period of the A/D conversion
clock.
Figure 6-3-1 A/D Control Register 0 (ANCTR0: X'03F90', R/W)
118 A/D Converter Control Registers