8x300 design guide - Al Kossow's Bitsavers - Trailing-Edge

+5V
PROGRAM
STORAGE
(ROM, PROM, OR
RAM-TTL COM·
PATIBLE, UP TO
8K BY 16 BITS)
- HALT
--
RESET
AO-A12 VCC
10-115
.:.:.:.:.:.::::::::::::::::::.:::.:.:.:.:.:~
..e-
X1
-L X2
."-
.. '" .....
r;2N52~
...
....
VR
8X300
VCR
IVO-IV7
SC
WC
MCLK
- LB
(NOTE)
-RB
8X32
""
INPUT/OUTPUT .....
.... ~ PORT r-'
~
.....
""
t
'"'
-
,..
...
,.
WORKING
STORAGE
- (RAM)
~
-
- - +- r-~
...
ll~
8X32
""
INPUT/OUTPUT
PORT ~.
.
~ ~
....
...
TO EXTERNAL DEVICE
,..
LEGEN D:
PORT INPUT CONTROL
PORT OUTPUT CONTROL
~ = ADDRESS
............• : ~ = INSTRUCTION
_
= DATA
...
,.
TO EXTERNAl- DEVICE
PORT INPUT CONTROL
PORT OUTPUT CONTROL
NOTE:
UP TO 256 BYTES CAN BE DIRECTLY INTERFACED
TO EACH BANK. WITH DECODERS AND SOME
EXTERNAL LOGIC, THE I/O COMPLEMENT CAN
BE FURTHER EXPANDED
1.3 DESIGN CONSIDERATIONS
Figure 1-2. Typical System Block Diagram
The Signetics 8X300 Microcontroller moves data at 4 million
operations per second, while requiring only minimal support and
peripheral circuitry. Where speed is of prime importance, the 8X300
offers an economic alternative to random logic or the bit-slice
approach. The device reduces both the complexity and cost usually
associated with the above mentioned approaches. Anywhere rapid
intelligent control is important -- disk drive controllers, CRT
displays, data communications, industrial control -- the 8X300 is an
excellent choice.
Signetics offers extensive support for the development of systems
employing the 8X300. The designer will find aids available in the
forms of:
· Development Systems
· Training
· Documentation
· Applications Support
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