h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 447

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Contention between TCNT Write and Overflow/Underflow: If there is an up-count or down-
count in the T
precedence and the TCFV/TCFU flag in TSR is not set.
Figure 10-57 shows the operation timing when there is contention between TCNT write and
overflow.
Multiplexing of I/O Pins: In the chip, the TCLKA input pin is multiplexed with the TIOCC0 I/O
pin, the TCLKB input pin with the TIOCD0 I/O pin, the TCLKC input pin with the TIOCB1 I/O
pin, and the TCLKD input pin with the TIOCB2 I/O pin. When an external clock is input,
compare match output should not be performed from a multiplexed pin.
Interrupts and Module Stop Mode: If module stop mode is entered when an interrupt has been
requested, it will not be possible to clear the CPU interrupt source or the DTC * activation source.
Interrupts should therefore be disabled before entering module stop mode.
Note: * The DTC is not implemented in the H8S/2635 and H8S/2634.
φ
Address
Write signal
TCNT
TCFV flag
2
state of a TCNT write cycle, and overflow/underflow occurs, the TCNT write takes
Figure 10-57 Contention between TCNT Write and Overflow
H'FFFF
Prohibited
TCNT write cycle
T
TCNT address
1
Rev. 6.00 Feb 22, 2005 page 387 of 1484
T
Section 10 16-Bit Timer Pulse Unit (TPU)
2
M
TCNT write data
REJ09B0103-0600