External Memory Write Timing In Separate Bus Mode - NEC PD78076 User Manual

Pd78078 series; pd78078y series 8-bit single-chip microcontrollers

Table of Contents

Figure 23-11. External Memory Write Timing in Separate Bus Mode

Internal Wait Signal

(1-clock wait)

Note In the separate bus mode, use of the address strobe signal is not required though it is output from

the ASTB/P67 pin.

CHAPTER 23 EXTERNAL DEVICE EXPANSION FUNCTION

(a) No wait (PW1, PW0 = 0, 0) setting

Lower Address

(b) Wait (PW1, PW0 = 0, 1) setting

Lower Address

Lower Address

Higher Address

Lower Address

Higher Address

Lower Address

Higher Address