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6525 PDF даташит

Спецификация 6525 изготовлена ​​​​«Commodore» и имеет функцию, называемую «TRI-PORT INTERFACE».

Детали детали

Номер произв 6525
Описание TRI-PORT INTERFACE
Производители Commodore
логотип Commodore логотип 

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6525 Даташит, Описание, Даташиты
v -'-'commodore
aamicanduct;or group
~~@@
6525 TRI·PORT INTERFACE
MPS
6525
TRI-PORT
INTERFACE
CONCEPT ...
The 6525 TRI·PORT Interface (TPI) is designed to simplify the implementation of complex I/O
operations in microcomputer systems. It combines two dedicated a·bit 110 ports with a third a-bit port
programmable for either normal 110 operation or priority interrupt/handshaking control. Depending on
the mode selected, the 6525 can provide 24 individually programmable 110 lines or 16 110 lines, 2
handshake lines and 5 priority interrupt inputs.
FEATURES:
• 24 individually programmable 110 lines or
16 110 lines, 2 handshake lines and 5 in-
terrupt inputs.
• Priority or non-priority interrupts
• Automatic handshaking
• Completely static operation
• Two TTL Drive Capabi Iity
• a directly addressable registers
• 1 MHz, 2MHz and 3MHz operation
6525 REGISTERS
·000
001
010
011
100
101
110
111
RO PRA - Port Register A
R1 PRB - Port Register B
R2 PRC - Port Register C
R3 DDRA - Data Qirection Register A
R4 DDRB - Data Direction Register B
R5 DDRC - Data Qirection Register C
R6 CR-Control Register
R7 AIR-Active Interrupt Register
-NOTE: RS2. RS1, RSO respectively
ORDER NUMBER:
MXSM25
T
L SPEED RANGE
=NO SUFFIX 450 ns
A=225 ns
B = 155 ns
PACKAGE DESIGNATOR
C=CERAMIC
P=PLASTIC
2-76
6525 PIN CONFIGURATION
Vss
PAO
PA1
PA2
PA3
PA4
PAS
PA6
PA7
PBO
PB1
PB2
PB3
PB4
PBS
PB6
PB7
cs
R/W
VDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 DB7
39 DBB
38 DB5
37 DB4
36 DB3
35 DB2
34 DB1
33 DBO
32 PC7
31 PC6
30 PC5
29 PC4
26 PC3
27 PC2
26 PC1
25, pco
24 RSO
23 RS1
22' RS2
21 REs









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6525 Даташит, Описание, Даташиты
6525 INTERNAL ARCHITECTURE
Data Bus
DB7-DBO
Data Bus
Buffers'
CS
RNY
RSO
RS1
RS2
RST
Chip
Access
Control
MPS
6525
PortA
Buffers
PortA
PA7-PAO
Port B
Buffers
Port B
PB7-PBO
I
Control
Register
Interrupt
Stack
~~~ - Mode 1 Only
2-77
PortC
PC7-PCO









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6525 Даташит, Описание, Даташиты
MPS
6525
MAXIMUM RATINGS
Supply Voltage, Vcc
InpuVOutput Voltage, VI N
Operating Temperature, TOp
Storage Temperature, TSTG
-O.3V to +7.OV
-O.3V to +7.OV
O°Cto 70°C
-55°C to 150°C
All inputs contain protection Circuitry to prevent damage
due to high static discharges. Care should be exer-
cised to prevent unnecessary application of voltages in
excess of the allowable limits.
COMMENT
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
These are stress ratings only. Functional operation of
this device at these or any other conditions above those
indicated in the operational sections of this specifica-
tion is not implied and exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.
CHARACTERISTICS (VCC = 5.0 V ± 5%, VSS = OV, TA = to 70°C)
CHARACTERISTIC
SYMBOL
MIN
TYP
Input High Voltage (Normal Operating Levels)
VIH
+ 2.0
1.5
Input Low Voltage (Normal Operating Levels)
Input Leakage Current
Vin = 0 to 5.0 V_
WRITE, RES, CS, RS2-RSO
VIL
liN
-0.3
0
1.2
±1.D
Three-State (Off, State) Input Current
(Vin = 0.4 to 2.4 V VCC= max)
00-07, PAO-P7, PBO-PB7, PCG-PC?
ITSI 0 ± 2.0
Output High Voltage
(VCC = min, Load = 200 IJA)
VOH
2.4
3.5
Output Low Voltage
(VCC = min, Load = 3.2 mAl
VOL
VSS
0.2
Output High Current (Sourcing)
(VOH = 2.4 V)
Output Low Current (Sinking)
(VOL = 0.4 V)
Supply Current
Input Capacitance
(Vin OV, TA = 25°C, f = 1.0 MHz)
00-07, PAG-PA7, PBO-PB7, PCG-PC7
WRITE, RES, RS2-RSO, CS
Output Capacitance
(Vin = OV, TA = 25°C, f = 1.0 MHz)
IOH
IOL
ICC
Cin
Cout
-200
3.2
-
-
-1000
-
50
7
-7
Note: Negative sign indicates outward current flow, positive indicates inward flow.
MAX
VCC
+0.8
± 2.5
±10
VCC
0.4
-
-
100
10
10
UNIT
V
V
fUA
IJA
V
V
IJA
mA
mA
pF
pF
2-78










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