HD404358 Datasheet, PDF (53/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
Timer write register B (upper digit) (TWBU: $00B)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
Undefined Undefined Undefined Undefined
W
W
W
W
TWBU3 TWBU2 TWBU1 TWBU0
Figure 36 Timer Write Register B Upper Digit (TWBU)
• Timer read register B (TRBL: $00A, TRBU: $00B): Read-only register consisting of the lower digit
(TRBL) and the upper digit (TRBU) that holds the count of the timer B upper digit (figures 37 and 38).
The upper digit (TRBU) must be read first. At this time, the count of the timer B upper digit is obtained,
and the count of the timer B lower digit is latched to the lower digit (TRBL). After this, by reading
TRBL, the count of timer B when TRBU is read can be obtained.
When the input capture timer operation is selected and if the count of timer B is read after a trigger is
input, either the lower or upper digit can be read first.
Timer read register B (lower digit) (TRBL: $00A)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
Undefined Undefined Undefined Undefined
R
R
R
R
TRBL3 TRBL2 TRBL1 TRBL0
Figure 37 Timer Read Register B Lower Digit (TRBL)
Timer read register B (upper digit) (TRBU: $00B)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
Undefined Undefined Undefined Undefined
R
R
R
R
TRBU3 TRBU2 TRBU1 TRBU0
Figure 38 Timer Read Register B Upper Digit (TRBU)
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