4583 Datasheet, PDF (74/153 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4583 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
A/D control register Q1
Q13 A/D operation mode selection bit
Q12 Not used
Q11 Not used
Q10 Analog input pin selection bits
at reset : 00002
at RAM back-up : state retained
0
A/D conversion mode
1
Comparator mode
0
This bit has no function, but read/write is enabled.
1
0
This bit has no function, but read/write is enabled.
1
0
AIN0
1
AIN1
R/W
TAQ1/TQ1A
A/D control register Q2
Q23 Not used
Q22 Not used
Q21 P61/AIN1 pin function selection bit
Q20 P60/AIN0 pin function selection bit
at reset : 00002
at RAM back-up : state retained
0
This bit has no function, but read/write is enabled.
1
0
This bit has no function, but read/write is enabled.
1
0
P61
1
AIN1
0
P60
1
AIN0
R/W
TAQ2/TQ2A
A/D control register Q3
at reset : 00002
at RAM back-up : state retained
Q33
Not used
0
1
This bit has no function, but read/write is enabled.
0
Instruction clock (INSTCK)
Q32 A/D converter operation clock selection bit
1
On-chip oscillator (f(RING))
Q31 Q30
Division ratio
Q31
0 0 ^{Frequency divided by 6}
A/D converter operation clock division
ratio selection bits
Q30
0 1 ^{Frequency divided by 12}
1 0 ^{Frequency divided by 24}
1 1 ^{Frequency divided by 48}
Note: “R” represents read enabled, and “W” represents write enabled.
R/W
TAQ3/TQ3A
Rev.3.00 Aug 06, 2004 page 74 of 151
REJ03B0009-0300Z