HD6433308 Datasheet, PDF (221/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

10.1.3 Input Pins
Table 10-1 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 10-1. A/D Input Pins
Name
Abbreviation I/O
Analog supply voltage AV_CC
Input
Analog ground
AV_SS
Input
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
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
ADTRG
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 for starting A/D conversion
10.1.4 Register Configuration
Table 10-2 lists the registers of the A/D converter module.
Table 10-2. A/D Registers
Name
A/D data register A
A/D data register B
A/D data register C
A/D data register D
A/D control/status register
A/D control register
Abbreviation
ADDRA
ADDRB
ADDRC
ADDRD
ADCSR
ADCR
R/W
R
R
R
R
R/(W)*
R/W
Initial value
H’00
H’00
H’00
H’00
H’00
H’7F
Address
H’FFE0
H’FFE2
H’FFE4
H’FFE6
H’FFE8
H’FFEA
* Software can write a "0" to clear bit 7, but cannot write a "1" in this bit.
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