Datasheet

Section 17 Subsystem Timer (Subtimer)
Rev. 4.00 Mar. 15, 2006 Page 380 of 556
REJ09B0026-0400
Figure 17.1 shows a block diagram of the subtimer. For details on the signal to the watchdog
timer, refer to section 13, Watchdog Timer.
On-chip
oscillator
1/2
PSCIN
To system clock
To watchdog timer
Internal data bus
SBTCTL
Interrupt request signal
1/128
SBTPS
[Legend]
PSCIN:
SBTPS:
ROPCR:
SBTDCNT:
SBTCTL:
Output clock of on-chip oscillator
Subtimer prescaler
Ring oscillator prescaler setting register
Subtimer counter
Subtimer control register
SBTDCNT
ROPCR
Figure 17.1 Block Diagram of Subtimer