HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 299

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

10.6
This section describes contention and other matters requiring special attention during ITU
operations.
10.6.1
If a counter clear signal occurs in the T3 state of a TCNT write cycle, clearing the counter takes
priority and the write is not performed. The timing is shown in figure 10.58.
Notes and Precautions
Contention between TCNT Write and Clear
Counter clear signal
Internal write signal
Figure 10.58 Contention between TCNT Write and Clear
Address
TCNT
CK
TCNT write cycle by CPU
T1
TCNT address
N
T2
T3
H' 0000
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