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82C55 Datasheet(PDF) 19 Page - Intel Corporation

Part # 82C55
Description  CHMOS PROGRAMMABLE PERIPHERAL INTERFACE
PDF  23 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

82C55 Datasheet(HTML) 19 Page - Intel Corporation

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82C55A
CAPACITANCE
TA e 25 C VCC eGND e 0V
Symbol
Parameter
Min
Max
Units
Test Conditions
CIN
Input Capacitance
10
pF
Unmeasured plns
returned to GND
CIO
IO Capacitance
20
pF
fc e 1 MHz(5)
NOTE
5 Sampled not 100% tested
AC CHARACTERISTICS
TA e 0 to 70 C VCC ea5V g10% GND e 0V
TA eb40 Cto a85 C for Extended Temperature
BUS PARAMETERS
READ CYCLE
Symbol
Parameter
82C55A-2
Units
Test
Min
Max
Conditions
tAR
Address Stable Before RD
v
0ns
tRA
Address Hold Time After RD
u
0ns
tRR
RD Pulse Width
150
ns
tRD
Data Delay from RD
v
120
ns
tDF
RD
u to Data Floating
10
75
ns
tRV
Recovery Time between RD WR
200
ns
WRITE CYCLE
Symbol
Parameter
82C55A-2
Units
Test
Min
Max
Conditions
tAW
Address Stable Before WR
v
0ns
tWA
Address Hold Time After WR
u
20
ns
PortsAB
20
ns
Port C
tWW
WR Pulse Width
100
ns
tDW
Data Setup Time Before WR
u
100
ns
tWD
Data Hold Time After WR
u
30
ns
PortsAB
30
ns
Port C
19



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