H8SXSLASH1663 datasheet(686/1158 Pages) RENESAS

Teilenummer	H8SX/1663

Bauteilbeschribung	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

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Section 12 8-Bit Timers (TMR)

Rev.1.00 Jun. 07, 2006 Page 634 of 1102

REJ09B0294-0100

Table 12.7

Switching of Internal Clock and TCNT Operation

No.

Timing to Change CKS1

and CKS0 Bits

TCNT Clock Operation

Switching from low to low*

Clock before

switchover

Clock after

switchover

TCNT input

clock

TCNT

CKS bits changed

N + 1

Switching from low to high*

Clock before

switchover

Clock after

switchover

TCNT input

clock

TCNT

CKS bits changed

N + 1

N + 2

Switching from high to low*

Clock before

switchover

Clock after

switchover

TCNT input

clock

TCNT

CKS bits changed

N + 1

N + 2

Switching from high to high

Clock before

switchover

Clock after

switchover

TCNT input

clock

TCNT

CKS bits changed

N + 1

N + 2

Notes: 1. Includes switching from low to stop, and from stop to low.

2. Includes switching from stop to high.

3. Includes switching from high to stop.

4. Generated because the change of the signal levels is considered as a falling edge;

TCNT is incremented.

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