D12320VF25V Datasheet, PDF (416/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 16-Bit Timer Pulse Unit (TPU)
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 9.50 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 9.50 Contention between TCNT Write and Increment Operations
Rev.7.00 Feb. 14, 2007 page 382 of 1108
REJ09B0089-0700