HD64F3437TF16 Datasheet, PDF (705/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

ADCSR—A/D Control/Status Register
H'E8
A/D
Bit
Initial value
Read/Write
7
ADF
0
R/(W)*
6
ADIE
0
R/W
5
ADST
0
R/W
4
SCAN
0
R/W
3
CKS
0
R/W
2
CH2
0
R/W
1
CH1
0
R/W
0
CH0
0
R/W
Channel Select
CH2
CH1
0
0
1
1
0
1
CH0
0
1
0
1
0
1
0
1
Single Mode Scan Mode
AN₀
AN₀
AN₁
AN₀, AN₁
AN₂
AN₀ to AN₂
AN₃
AN₀ to AN₃
AN₄
AN₄
AN₅
AN₄, AN₅
AN₆
AN₄ to AN₆
AN₇
AN₄ to AN₇
Clock Select
0 Conversion time = 266 states (max)
1 Conversion time = 134 states (max)
Note: When ø_P = ø
Scan Mode
0 Single mode
1 Scan mode
A/D Start
0 A/D conversion is halted.
1 1. Single mode:
One A/D conversion is performed, then this bit is automatically cleared to 0.
2. Scan mode:
A/C conversion starts and continues cyclically on all selected channels until 0 is
written in this bit.
A/D Interrupt Enable
0 The A/D interrupt request (ADI) is disabled.
1 The A/D interrupt request (ADI) is enabled.
A/D End Flag
0 Cleared from 1 to 0 when CPU reads ADF = 1, then writes 0 in ADF.
1 Set to 1 at the following times:
1. Single mode: at the completion of A/D conversion
2. Scan mode: when all selected channels have been converted.
Note: * Only 0 can be written, to clear the flag.
676