h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 390

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 12 8-Bit Timers
12.6.2
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write
takes priority and the counter is not incremented. Figure 12.14 shows this operation.
Rev. 4.00 Jun 06, 2006 page 336 of 1004
REJ09B0301-0400
Address
Internal write signal
TCNT input clock
TCNT
Contention between TCNT Write and Increment
Figure 12.14 Contention between TCNT Write and Increment
TCNT write cycle by CPU
T
1
N
TCNT address
T
2
Counter write data
M