r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 281

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
16.3.7
Note:
b7 to b0 Timer mode
After Reset
1. The values in registers TRBPR and TRBSC are reloaded and counted alternately. The count value can be read
Bit
Address 00136h (TRBSC_0)
from the TRBPR register while the secondary period is counted.
In the 8-bit timer with 8-bit prescaler, the 8-bit TRBSC register is used to set the secondary period used in
programmable waveform and programmable wait one-shot generation modes. When read, the value is read
from the reload register.
In the 16-bit timer, the 8-bit TRBSC register is used to set the higher 8-bit secondary period used in
programmable waveform and programmable wait one-shot generation modes. This setting can be made in timer
mode and programmable one-shot generation mode, but it is not used for counter operation. When read, the
value is read from the reload register.
The TRBSC register is configured with a master – reload register structure, so the reload register is written
simultaneously while the count is stopped. During the counter operation, the timing for updating the reload
register differs in each mode. For details, refer to Table 16.6 Reload Register Update Timing for Registers
TRBPR and TRBSC in 8-Bit Timer with 8-Bit Prescaler, and Table 16.7 Reload Register Update Timing
for Registers TRBPRE, TRBPR, and TRBSC in 16-Bit Timer.
If 1 (count is forcibly stopped) is written to the TSTOP bit in the TRBCR register, the TRBSC register is
initialized (FFh).
Symbol
Bit
Programmable waveform
generation mode
Programmable one-shot
generation mode
Programmable wait one-shot
generation mode
Timer RB2 Secondary Register (TRBSC)
Preliminary document
Specifications in this document are tentative and subject to change.
b7
—
1
Mode
b6
—
1
b5
—
1
Disabled
Timer RB2 prescaler
underflow
Disabled
Timer RB2 prescaler
underflow
8-Bit Timer with
8-Bit Prescaler
b4
—
1
Function
b3
—
1
Internal count
source or timer RJ
underflow
Internal count
source or timer RJ
underflow
16-Bit Timer
b2
—
1
(1)
(1)
b1
—
1
FFh
FFh
FFh
FFh
Value
Initial
b0
—
1
Invalid
00h to FFh
Invalid
00h to FFh
Setting
Range
Page 250 of 725
16. Timer RB2
R/W
R/W
R/W
—
—