HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 749

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

frequently, as in scan mode, if the current charged and discharged by the capacitance of the
sample-and-hold circuit in the A/D converter exceeds the current input via the input impedance
(R
when deciding the circuit constants.
A/D Conversion Precision Definitions: The chip’s A/D conversion precision definitions are
given below.
• Resolution
• Offset error
Notes:
in
The number of A/D converter digital output codes
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from the minimum voltage value B'0000000000 to
B'0000000001. (See figure 16.9.)
), an error will arise in the analog input pin voltage. Careful consideration is therefore required
*
1
Values are reference values.
1.
2. R
*
1
10 μF
in
: Input impedance
Figure 16.7 Example of Analog Input Protection Circuit
R
in
*
2
0.01 μF
100 Ω
0.1 μF
Section 16 A/D Converter (8 Analog Input Channel Version)
AV
V
AN0 to AN7
AV
Rev.6.00 Sep. 27, 2007 Page 719 of 1268
ref
CC
SS
REJ09B0220-0600