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Wait time after power on: provided by pin input, Configuration, Chapter 18 timebase counter 3.configuration – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 18 Timebase Counter

3.Configuration

Events that invoke an oscillation stabilization wait using other than the timebase counter

Wait time after power on: Provided by pin input

Wait time after changing from subclock to main clock: Using the main oscillation stabilization wait
timer to generate this time is recommended.

When recovering from main clock oscillation halted: Enabling the main clock oscillation and
waiting for oscillation to stabilize is required.

Main PLL lock wait time (for main clock operation): Using the timebase timer interrupt to generate
this time is recommended.

• A wait time is required after the main PLL operation is enabled.

• A wait time is required after the main PLL multiplier setting is changed.

3. Configuration

Figure 3-1 Configuration Diagram

Figure 3-2 Register List

Time-base counter

(when used to generate the oscillation stabilization wait)

CLKR :bit 1-0

F

0

0

1

1

0

1

1

0

F

CL-SUB

/2

/2

CL-MAIN

F

F

CL-SUB

/2

CL-MAIN

CKS1-CKS0

Base clock
(

φ2)

Time-base counter
(26-bit counter)

0

1

2

3

9

10 11

12 13

14 15 16 17 18

19 20 21 22

23 24 25

- INIT pin input
- Watchdog reset
- STOP

2

1

2

2

2

3

2

4

2

10

2

11

2

12

2

13

2

14

2

15

2

16

2

17

2

18

2

19

2

20

2

21

2

22

2

23

2

24

2

25

2

26

OS1-OS0

ST CR:bit 3-2

0

0

1

1

0

1

1

0

φ2 x
φ2 x
φ2 x
φ2 x

2

1

2

11

2

16

2

22

Selector

Edge detection

Oscillation stabilization
wait control signal