HD64F2638F20J Datasheet, PDF (440/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 10 16-Bit Timer Pulse Unit (TPU)
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Contention between TCNT Write and Increment Operations: If incrementing occurs in the T₂
state of a TCNT write cycle, the TCNT write takes precedence and TCNT is not incremented.
Figure 10-50 shows the timing in this case.
TCNT write cycle
T₁
T₂
φ
Address
TCNT address
Write signal
TCNT input
clock
TCNT
N
M
TCNT write data
Figure 10-50 Contention between TCNT Write and Increment Operations
Page 390 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010