UPD784044 Datasheet, PDF (47/90 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784044(A), 784046(A)
9. LOCAL BUS INTERFACE
The µPD784046(A) can be connected to an external memory or I/O (memory mapped I/O), supporting a 1M-
byte memory space (refer to Figure 9-1).
Figure 9-1. Example of Local Bus Interface (with external 8-bit bus specified)
µ PD784046(A)
A16-A19
Address bus
RD
LWR
SRAM
PROM
Character
generator
AD0-AD7
ASTB
AD8-AD15
Latch
Data bus
Address bus
Gate array
I/O expansion
Centronics I/F, etc.
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