HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 222

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

10.2 Register Descriptions
10.2.1 A/D Data Registers (ADDR) – H’FFE0 to H'FFE6
Bit
ADDRn
Initial value
Read/Write
The four A/D data registers (ADDRA to ADDRD) are 8-bit read-only registers that store the results
of A/D conversion. Each data register is assigned to two analog input channels as indicated in
Table 10-3.
The A/D data registers are always readable by the CPU.
The A/D data registers are initialized to H’00 at a reset and in the standby modes.
Table 10-3. Assignment of Data Registers to Analog Input Channels
Analog input channel
Group 0
AN
AN
AN
AN
10.2.2 A/D Control/Status Register (ADCSR) – H’FFE8
Bit
Initial value
Read/Write
* Software can write a “0” in bit 7 to clear the flag, but cannot write a “1” in this bit.
The A/D control/status register (ADCSR) is an 8-bit readable/writable register that controls the
operation of the A/D converter module.
0
1
2
3
Group 1
AN
AN
AN
AN
4
5
6
7
R/(W)*
ADF
R
7
0
7
0
A/D data register
ADDRA
ADDRB
ADDRC
ADDRD
ADIE
R/W
R
6
0
6
0
ADST
R/W
R
5
0
5
0
SCAN
210
R/W
R
4
0
4
0
CKS
R/W
R
3
0
3
0
CH2
R/W
R
2
0
2
0
CH1
R/W
R
1
0
1
0
(n = A to D)
CH0
R/W
R
0
0
0
0