HD6475348R Datasheet, PDF (299/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

15.1.3 Input Pins
Table 15-1 lists the input pins used by the A/D converter module.
The eight analog input pins are divided into two groups, consisting of analog inputs 0 to 3 (AN0 to
AN3) and analog inputs 4 to 7 (AN4 to AN7), respectively.
Table 15-1 A/D Input Pins
Name
Analog supply
voltage
Analog ground
Analog input 0
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Analog input 5
Analog input 6
Analog input 7
A/D external
trigger input
Abbreviation I/O
AVCC
Input
AVSS
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
ADTRG
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Function
Power supply and reference voltage for the
analog circuits.
Ground and reference voltage for the analog circuits.
Analog input pins, group 0
Analog input pins, group 1
External trigger input
15.1.4 Register Configuration
Table 15-2 lists the registers of the A/D converter module.
Table 15-2 A/D Registers
Name
Abbreviation R/W Initial Value
A/D data register A (High) ADDRA (H) R
H'00
A/D data register A (Low) ADDRA (L)
R
H'00
A/D data register B (High) ADDRB (H) R
H'00
A/D data register B (Low) ADDRB (L)
R
H'00
A/D data register C (High) ADDRC (H) R
H'00
A/D data register C (Low) ADDRC (L)
R
H'00
A/D data register D (High) ADDRD (H) R
H'00
A/D data register D (Low) ADDRD (L)
R
H'00
A/D control/status register ADCSR
R/(W)* H'00
A/D control register
ADCR
R/W H'7F
* Software can write 0 to clear the status flag bits but cannot write 1.
Address
H'FEE0
H'FEE1
H'FEE2
H'FEE3
H'FEE4
H'FEE5
H'FEE6
H'FEE7
H'FEE8
H'FEE9
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