p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 338

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 13 8-Bit Timer (TMR)
Notes: 1. Includes switching from low to stop, and from stop to low.
13.9.6
If the 16-bit count mode and compare-match count mode are set simultaneously, the input clock
pulses for TCNT_0 and TCNT_1, and TCNT_X and TCNT_Y are not generated, and thus the
counters will stop operating. Simultaneous setting of these two modes should therefore be
avoided.
13.9.7
TMR operation can be enabled or disabled using the module stop control register. The initial
setting is for TMR operation to be halted. Register access is enabled by canceling the module stop
mode. For details, see section 22, Power-Down Modes.
Rev. 1.00 Sep. 21, 2006 Page 300 of 658
REJ09B0310-0100
No.
4
Timing of Switchover
by Means of CKS1
and CKS0 Bits
Clock switching from high
to high level
2. Includes switching from stop to high.
3. Includes switching from high to stop.
4. Generated on the assumption that the switchover is a falling edge; TCNT is
Mode Setting with Cascaded Connection
Module Stop Mode Setting
incremented.
TCNT Clock Operation
Clock before
switchover
Clock after
switchover
TCNT
clock
TCNT
N
N + 1
CKS bit rewrite
N + 2