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Section 11 Timer B1
Section 11 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 11.1 shows a block diagram of timer B1.
11.1 Features
• Selection of seven internal clock sources (φ/8192, φ/2048, φ/512, φ/256, φ/64, φ/16, and φ/4) or
an external clock (can be used to count external events).
• An interrupt is generated when the counter overflows.
φ
TMIB1
PSS
TMB1
TCB1
TLB1
[Legend]
TMB1: Timer mode register B1
TCB1: Timer counter B1
TLB1: Timer load register B1
IRRTB1: Timer B1 interrupt request flag
PSS: Prescaler S
TMIB1: Timer B1 event input
Figure 11.1 Block Diagram of Timer B1
IRRTB1
TIM08B0A_000020020200
Rev. 3.00 Sep. 10, 2007 Page 179 of 528
REJ09B0216-0300