UPD70F3114 Datasheet, PDF (650/692 Pages) NEC – 32-Bit Single-Chip Microcontrollers

CHAPTER 16 ELECTRICAL SPECIFICATIONS
(d) Write cycle (CLKOUT synchronous/asynchronous, 1 wait)
T1
T2
TW
T3
CLKOUT (output)
A16 to A21 (output)
AD0 to AD15 (I/O)
ASTB (output)
LWR (output)
UWR (output)
WAIT (input)
<40>
<46>
Address
<42>
<17> <18>
Data
<42>
<28>
<43>
<22>
<29>
<30>
<25>
<43>
<31>
<36> <47>
<38>
<37>
<39>
<48>
<27>
<47> <48>
<32>
<34>
<33>
<35>
Caution When using the CLKOUT signal for interfacing with external devices, set the internal
system clock frequency (fXX) to 32 MHz or lower.
Remark RD is high level.
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User’s Manual U15195EJ5V0UD