HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 297

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

10.5.2
The status flags are cleared by a write cycle in which 1 is read on the CPU and then 0 is written to
it. This timing is shown in figure 10.57.
Overflow
IMF, OVF
Address
TCNT
signal
Clear Timing of Status Flags
OVF
OVI
CK
CK
H' FFFF
Figure 10.57 Timing of Status Flag Clearing
Figure 10.56 Timing of Setting OVF
T1
TSR write cycle
TSR address
T2
H' 0000
T3
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