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GE - CMOS Parallel Interface

Numéro de référence CDP6823
Description CMOS Parallel Interface
Fabricant GE 
Logo GE 





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CDP6823 fiche technique
CMOS Peripherals
CDP6823
TERMINAL ASSIGNMENT
PCI Voo
PCI PC3
PCO
PAD
PC4/CA1
PC~/CA2
PAl PC6/CB
Poll PCrlce2
PAS
P80
Pol'" P8'
PAil P82
PAl PIJ
PAl' P8"
ADO
P85
AO' PBe
mA02
AD3
PS1
AD4 mrT'
An os
ADe R/ii'
V"A01
---.=-_-',"',-
AS
Jr
TOP VIEW
4G-Lead Plcklll"
Advance Information
CMOS Parallel Interface
Featurel:
• Four port C I/O pins may be used as
Control Lines for:
• 24 Individual programmed I/O pins
Four interruput inputs
• MOTEL circuit for bus compatibility
Input byte latch
with many microprocessors
Output pulse
• Multiplexed bus compatible with:
Handshake activity
CDP6805E2 and competitive
• 15 registers addressed as memory
microprocessors
locations
• Data direction registers for ports A, S, • Handshake control logic for Input and
andC
output peripheral operation
• Reset Input to clear interrupts and
• Interrupt output pin
Initialize Internal registers
• 3 volt to 5.5 volt operating Voo
The RCA-C0P6823 CMOS parallel interface (CPI) provides
a universal means of interfacing external signals with the
C0P6805E2 CMOS microprocessor and other multiplexed
bus microprocessors. The unique MOTEL circuit on-chip
allows direct Interfacing to most industry CMOS
microprocessors, as well as many NMOS MPUs.
The C0P6B23 CPI includes three bidirectlonal8-bit ports or
24 1/0 pins. Each 1/0 line may be separately established as
an Input or an output under program control via data
direction registers associated with each port. Using the bit
change and test Instructions of the C0P6805E2, each
individual I/O pin can be separately accessed. All port
registers are readlwrlte bytes to accommodate read-
modify-write Instructions.
The C0P6B23Is supplied In a 40-lead hermetic dual-in-line
side-brazed ceramic package (0 suffix), In a 4o-Iead dual-
In-line plastiC package (E suffix) and In a 44-lead plastiC
chlp-carrler package (Q suffix).
The RCA-COP6823 is equivalent to and is a direct
replacement for the Industry type MC146823.
'"
'A"""
AD5
ASEDS
RI\IV Control
R"E"S'rT
Inputs
"
TERMINAL ASSIGNMENT
PA' Ne
PA! PC7lCB2
PA'
PA. 'D
PBD
PB.
PAl 11
12----=f--- - ..PA7
IADD n
TOplYIEW
~!5 PB.
PB'
33 PB.
AD' ~
ADZ 15
I
~ PB'
31 PBe
AD! 16
30 pa?
Ne 17
29 fRO
18 19 20 21 22 23 24 25 26 27 28
= It;> I~ :
I~ ~ Ii!
:!IE ..
92CS -40940
44-L.ad Pla.tlc Chip-Carrier Packlll'
Fig. 1 - Functional block diagram.
'"Pc>
PC3
PC4ICAI
PC5/CA2
pee/CBI
PC71CB2
File Number 1377
598 ______________________________________________________________

PagesPages 14
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