UPD784915B Datasheet, PDF (74/86 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLERS

Serial transfer timing (SIO2 only)
No busy processing
SCK2
BUSY
tWSKL
tWSKH
7
8
tCYSK
Active high
STRB
9
10
tDSTRB
Busy invalid
tWSTRB
µPD784915B, 784916B
1
2
Continuation of busy processing
SCK2
BUSY
STRB
tWSKL
tWSKH
7
8
tCYSK
9
10
tSBUSY
Active high
tDSTRB
tWSTRB
10+n
tHBUSY
End of busy processing
SCK2
BUSY
tWSKL
tWSKH
7
8
tCYSK
Active high
9
10+n
11+n
1
tHBUSY
tLBUSY
Caution When an external clock is selected as the serial clock, do not use the busy control or strobe
control.
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