HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 396

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

ø
Address bus
Internal write signal
TCNT input clock
Overflow signal
TCNT
OVF
Contention between TCNT Write and Overflow or Underflow: If an overflow occurs in the T
state of a TCNT write cycle, writing takes priority and the counter is not incremented. OVF is
set to 1.The same holds for underflow. See figure 10-65.
Figure 10-65 Contention between TCNT Write and Overflow
T
1
TCNT write cycle
H'FFFF
TCNT address
TCNT write data
T
2
384
T
3
M
3