HD6412350 Hitachi, HD6412350 Datasheet - Page 659

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Table 15-6 Analog Pin Specifications
Item
Analog input capacitance
Permissible signal source impedance
Note: * When V
A/D Conversion Precision Definitions: H8S/2350 Series A/D conversion precision definitions
are given below.
Resolution
The number of A/D converter digital output codes
Offset error
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 (H'000) to
B'0000000001 (H'001) (see figure 15-10).
Full-scale error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from B'1111111110 (H'3FE) to B'1111111111 (H'3FF) (see
figure 15-10).
Quantization error
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 15-9).
Nonlinearity error
The error with respect to the ideal A/D conversion characteristic between the zero voltage and
the full-scale voltage. Does not include the offset error, full-scale error, or quantization error.
Absolute precision
The deviation between the digital value and the analog input value. Includes the offset error,
full-scale error, quantization error, and nonlinearity error.
CC
= 4.0 V to 5.5 V and ø
Figure 15-8 Analog Input Pin Equivalent Circuit
Note: Values are reference values.
AN0 to
AN7
12 MHz
10 k
Min
—
—
20 pF
To A/D
converter
Max
20
10*
Unit
pF
k
639