HD404358 Datasheet, PDF (77/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
I_AD Off Flag (IAOF: $021, Bit 2): By setting the I_AD off flag to 1, the current flowing through the
resistance ladder can be cut off even while operating in standby or active mode, as shown in figure 67.
I_AD off flag (IAOF: $021, bit 2)
Bit
Initial value
Read/Write
Bit name
3
0
R/W
RAME
2
0
R/W
IAOF
1
0
R/W
ICEF
0
0
R/W
ICSF
I_AD Off Flag (IAOF)
0
I_AD current flows
1
I_AD current is cut off
RAME
Refer to the description of operating
modes
ICSF
Refer to the description of timers
ICEF
Refer to the description of timers
Figure 67 I_AD Off Flag (IAOF)
A/D Data Register (ADRL: $017, ADRU: $018): Eight-bit read-only register consisting of a 4-bit lower
digit and 4-bit upper digit. This register is not cleared by reset. After the completion of A/D conversion, the
resultant eight-bit data is held in this register until the start of the next conversion (figures 68, 69, and 70).
ADRU: $018
3
2
1
0
ADRL: $017
3
2
1
0
MSB
LSB
Bit 7
Bit 0
Figure 68 A/D Data Registers (ADRU, ADRL)
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