Example Of Connection With Memory; Connection Example Of Μ Pd780144 And Memory - NEC 78K0 User Manual

5.4

Example of Connection with Memory

An example of connecting the
In addition, the external bus interface function is used in the full-address mode, and the addresses from 0000H to
7FFFH (32 KB) are allocated to internal ROM, and the addresses after 8000H to SRAM.
µ
PD780144
RD
WR
A8 to A14
ASTB
AD0 to AD7
140
CHAPTER 5 EXTERNAL BUS INTERFACE
µ
PD780144 with external memory (in this example, SRAM) is shown in Figure 5-9.
Figure 5-9. Connection Example of
V
DD
74HC573
LE
Q0 to Q7
D0 to D7
OE
User's Manual U15947EJ2V0UD
µ
PD780144 and Memory
µ
PD43256B
CS
OE
WE
I/O1 to I/O8
Address bus
A0 to A14
*
Data bus