MC68HC05E0 Datasheet, PDF (50/96 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit

CS3 (PD3)
CS2 (PD2)
R/W (PD1)
CSROM
MC68HC05E0
5
DATA
ADDRESS
CE
ROM
or
EPROM
(e.g. 27(C)64)
OE
R/W CE
RAM
(optional - e.g.
MCM60(L)64)
OE
Figure 5-1 Minimum System with External Memory
A15 (PD7)
A14 (PD6)
A13 (PD5)
P02 (PD0)
R/W* (PD1)
MC68HC05E0
DATA
ADDRESS
A2
A1
A0
MC74HC138
CS1
CE
ROM
OE
CE
EPROM
OE
CE R/W
RAM
OE
Figure 5-2 More Complex Expanded System
MOTOROLA
5-4
MEMORY AND ADDRESSING
MC68HC05E0