
R8C/14 Group, R8C/15 Group 13. Timers
Rev.2.10 Jan 19, 2006 Page 100 of 253
REJ09B0164-0210
Figure 13.13 PREZ, TZSC and TZPR Registers
Prescaler Z Register
Symbol Address After Reset
PREZ
0085h FFh
Mode Function Setting Range RW
Programmable Wait One-
shot Generation Mode
Counts internal count source or Timer X
underflow
00h to FFh
RW
Programmable One-shot
Generation Mode
Counts internal count source or Timer X
underflow
00h to FFh
RW
b0b7
Timer Mode RW
Counts internal count source or Timer X
underflow
00h to FFh
Programmable Waveform
Generation Mode
RW
Counts internal count source or Timer X
underflow
00h to FFh
Timer Z Secondary Register
Symbol Address After Reset
TZSC
0086h FFh
Mode Function Setting Range RW
NOTES :
1.
2.
Programmable Wait One-
shot Generation Mode
Counts underflow of Prescaler Z (one-shot
width is counted)
00h to FFh
WO
Programmable One-shot
Generation Mode
Disabled
——
Programmable Waveform
Generation Mode
WO
(2)
Counts underflow of Prescaler Z
(1)
00h to FFh
Disabled
—
b7
Each value in the TZPR register and TZSC register is reloaded to the counter alternately and counted.
The count value can be read out by reading the TZPR register even when the secondary period is being
counted.
b0
Timer Mode —
Timer Z Primary Register
Symbol Address After Reset
TZPR
0087h FFh
Mode Function Setting Range RW
NOTES :
1. Each value in the TZPR register and TZSC register is reloaded to the counter alternately and counted.
b0
Timer Mode RW
Counts underflow of Prescaler Z
b7
Programmable Waveform
Generation Mode
RW
Counts underflow of Prescaler Z
(1)
00h to FFh
00h to FFh
Programmable One-shot
Generation Mode
Counts underflow of Prescaler Z
(counts one-shot width)
00h to FFh
RW
Programmable Wait One-
shot Generation Mode
Counts underflow of Prescaler Z
(counts w ait period)
00h to FFh
RW
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