HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 300

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

10.6.2
If an increment pulse occurs in the T3 state of a TCNT word write cycle, writing takes priority and
the TCNT is not incremented. The timing is shown in figure 10.59.
286 HITACHI
Contention between TCNT Word Write and Increment
Figure 10.59 Contention between TCNT Word Write and Increment
Internal write signal
TCNT input clock
Address
TCNT
CK
TCNT word write cycle by CPU
T1
TCNT address
N
TCNT write data
T2
T3
M