Datasheet

Section 10 Timer B1
TIM08B0A_000020020200 Rev. 3.00 Sep. 14, 2006 Page 139 of 408
REJ09B0105-0300
Section 10 Timer B1
Timer B1 is an 8-bit timer that increments each time a clock pulse is input. This timer has two
operating modes, interval and auto reload. Figure 10.1 shows a block diagram of timer B1.
10.1 Features
• Selection of seven internal clock sources (φ/8192, φ/2048, φ/512, φ/256, φ/64, φ/16, and φ/4)
• An interrupt is generated when the counter overflows.
[Legend]
TMB1:
φ
TCB1:
Timer mode register B1
Timer counter B1
TLB1:
IRRTB1:
Timer load register B1
Timer B1 interrupt request flag
PSS: Prescaler S
Internal data bus
TCB1
TMB1
PSS
TLB1
IRRTB1
Figure 10.1 Block Diagram of Timer B1