HD6432670 Hitachi, HD6432670 Datasheet - Page 619

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

11.10.5 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 11.46 shows the timing in this case.
Figure 11.46 Contention between TCNT Write and Increment Operations
ø
Address
Write signal
Counter clearing
signal
TCNT
ø
Address
Write signal
TCNT input
clock
TCNT
Figure 11.45 Contention between TCNT Write and Clear Operations
TCNT write data
N
TCNT write cycle
N
TCNT write cycle
TCNT address
TCNT address
T1
T1
T2
T2
H'0000
M
Rev. 2.0, 04/02, page 573 of 906