A/D Control Register (Anctr) - Panasonic MN101C00 User Manual

Chapter 6 A/D Conversion Functions
7
ANSH1 ANSH0
ANCTR0
118
A/D Converter Control Registers

6-3-2 A/D Control Register (ANCTR)

This readable and writable 8-bit register controls the operation of the A/D
converter.
6 5 4 3
ANCK1 ANCK0 ANLADE
(1) A/D control register 0 (ANCTR0)
Figure 6-3-1 A/D Control Register 0 (ANCTR0: X'03F90', R/W)
2 1 0
(at reset: XXXX0XXX)
ANCHS2 ANCHS1 ANCHS0
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. T
clock.
ANCHS2 ANCHS1 ANCHS0 Analog input selection
0
AN0
0
1
AN1
0
AN2
0
1
AN3
1
0 AN4
0
1 AN5
1
AN6
0
1
AN7
1
ANLADE
A/D ladder resistor control
0 A/D ladder resistors off
1
A/D ladder resistors on
A/D conversion
ANCK1 ANCK0
clock selection 1
0
fs/2
0
1 fs/4
fs/8
0
1
Use prohibited
1
Sample and
ANSH1 ANSH0
hold time setting 2
0
T 2
AD
0
1 T 6
AD
T 18
0
AD
1
Use prohibited
1
indicates the period of the A/D conversion
AD