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Chapter 19 Timebase Timer
1.Overview
Chapter 19 Timebase Timer
1. Overview
The timebase timer is a selector that uses the output from a 26-bit timebase counter using the base clock (F).
The timebase timer is an interval-interrupt generating timer that is used to acquire main PLL lock wait time and
to count a long time.
2. Features

Timebase timer (TBT)

Type : Detects timebase timer bit output and generates an interval interrupt.
Quantity : 1
Interval time: 8 types (Timebase timer bit output)
Period =211/FF, 212/FF, 213/FF, 222/FF, 223/FF, 224/FF,
225/FF, 226/FF
Operation start/stop: Always in operation (Can be replaced by interrupt request enable control)
• Timebase counter clear: Continuously writes “A5”“5A” in the timebase counter clear register CTBR using the
software.
Selector
Watchdog control section
Base
clock
(φ)26-bit counter
Timebase timer interrupt
Watchdog timer
Timebase timer
Timebase
counter