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6522 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Commodore - VERSATILE INTERFACE ADAPTER

شماره قطعه 6522
شرح مفصل VERSATILE INTERFACE ADAPTER
تولید کننده Commodore 
آرم Commodore 





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6522 شرح
, . . , commodore
~ aamicanduct:or group
~UYAJ@@
MPS
6522
VERSATILE
INTERFACE
ADAPTER
6522 VERSATILE INTERFACE ADAPTER
DESCRIPTION
The 6522 Versatile Interface Adapter (VIA) provides all of the capability of the 6520.1 n addition, this
device contains a pair of very powerful interval timers, a serial-to-parallellparallel-to-serial shift
register and input data latching on the peripheral ports. Expanded handshaking capability allows
control of bi-directional data transfers between VIA's in multiple processor systems.
Control of peripheral devices is handled primarily through two 8-bit bi-directional ports. Each of
these lines can be programmed toactaseitheran inputoran output.Also, several peripheralI/O lines
can be controlled directly from the interval timers for generating programmable-frequency square
waves and for counting externally generated pulses. To facilitate control of the many powerful
features of this chip, the internal registers have been organized into an interrupt flag register, an
interrupt enable register and a pair of function control registers.
FEATURES
• Very powerful expansion of basic 6520 capability.
• N channel, depletion load technology, single +5V supply.
• Completely static and TIL compatible.
• CMOS compatible peripheral control lines.
• Expanded "handshake" capability allows very positive
control of data transfers betvoJeen processor
and peripheral devices.
6522 Interface Diagram
To
650X
8 Bit
Data Bus
R/W
Clock
Register
& Chip
Selects
IRQ
6522
--..
Control
8 Bi:
Port
8 Bit
Port
Control
To
Peripheral
Devices
6522
vSS CA1
PAO CA2
PA1 RSO
PA2 RS1
PA3 RS2
PA4 RS3
PA5 RES
PA6 DO
PA7 01
PBO 02
PB1 03
PB2 04
PB3 05
PB4 06
PB5 07
PB6 ¢2
PB7 CS1
CB1 CS2
CB2 R/W
VCC IRQ
2-50

قانون اساسیصفحه 16
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