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PDF 6523 Data sheet ( Hoja de datos )

Número de pieza 6523
Descripción TRI-PORT INTERFACE
Fabricantes Commodore 
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No Preview Available ! 6523 Hoja de datos, Descripción, Manual

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~~@©
MPS
6523
TRI-PORT
INTERFACE
6523 TRI-PORT INTERFACE
CONCEPT ...
The 6523 TRI-PORT Interface (TPI) is designed to simplitythe implementation of complex I/O operations in
microcomputer systems. It has three dedicated 8-bit I/O ports which provide 24 individually programmable I/O
lines.
FEATURES:
• 24 individually programmable I/O lines
• Completely static operation
• Two TIL Drive Capability
• 6 directly addressable registers
• 1 MHz, 2M Hz and 3MHz operation
6523 REGISTERS
*000
001
010
011
100
101
11 0
111
RO PRA - Port Register A
R1 PRB - Port Register B
R2 PRC - Port Register C
R3 DDRA- Data Direction Register A
R4 DDRB - Data Direction Register B
R5 DDRC - Data Direction Register
Illegal States
Illegal States
*NOTE: RS2, RS1, RSO respectively
ORDER NUMBER:
MXS6523 -r-
'-- SPEED RANGE
=NO SUFFIX 450 ns
A =225 ns
8 = 165 ns
l _ _ _ _ _ PACKAGE DESIGNATOR
C=CERAMIC
P=PLASTIC
2-66
6523 PIN CONFIGURATION
Vss
PAO
PA1
PA2
PA3
PA4
PAS
PA6
PA7
P80
P81
P82
P83
P84
P85
P86
P87
CS
R/W
voo
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 087
39 086
38 085
37 084
36 083
35 082
34 081
33 080
32 PC7
31 PC6
30 PC5
29 PC4
28 PC3
27 PC2
26 PC1
25 PCO
24 RSO
23 RS1
22 RS2
21 REs

1 page




6523 pdf
I
MPS
6523
READ CYCLE TIMING
SYMBOL
CHARACTERISTIC
TRC
Read Cycle
TACC
TCO
TRCS
TRCH
TOTO
Access Time 1
CS to Output Valid
-
R/W high to CS Setup
-
R/W high to CS Hold
CS to Output Off Delay
TAOD Address to Output Delay
TPDS
Port Input Setup
TpDH
Port Input Hold
6523
MIN
MAX
450 -
- 450
- 270
0-
0-
20 120
50 -
120 -
150 -
6523A
MIN
MAX
225 -
- 225
- 120
0-
0-
20 120
50 -
60 -
150 -
6523B
MIN MAX UNITS
165 -
ns
- 165 ns
- 70 ns
0-
ns
0-
ns
20 120 ns
50 -
ns
40 -
ns
150 -
ns
Note 1: Access Time measured from later of WRIT( high or RS stable.
WRITE CYCLE TIMING
SYMBOL
CHARACTERISTIC
TWC
TWA
Write Cycle
Write Active Time2
TAWS Address to R/W low Setup
TAWH Address to R/W low Hold
TDS Data bus in Setup
TDH
Data bus in Hold
TWPD Write active to Port out DelSlY
6523
MIN
MAX
450 -
420 -
0-
0-
150 -
0-
- 1000
6523A
MIN
MAX
225 -
200 -
0-
0-
100 -
0-
- 500
6523B
'MIN MAX
165 -
UNITS
ns
150 -
ns
0-
0-
50 -
ns
ns
ns
0-
ns
- 330 ns
Note 2: TWA is the time while both CS and R/W are low.
2-70

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