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Am8255A डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Programmable Peripheral Interface - AMD

भाग संख्या Am8255A
समारोह Programmable Peripheral Interface
मैन्युफैक्चरर्स AMD 
लोगो AMD लोगो 
पूर्व दर्शन
1 Page
		
<?=Am8255A?> डेटा पत्रक पीडीएफ

Am8255A pdf
Am8255A/8255A-5
MOS-108
CONNECTION DIAGRAM - Top View
PA3
PA 2
PAl
PAO
AD
CS
GNO
Al
AO
PC7
PC6
PCS
PC4
PCO
PCl
PC2
PC3
10
11
12
13
14
15
16
17
PBo 18
PBl §19
PB2 20
Am8255A
PA.
39 PAs
38 PA6
37 PA7
36 WR
35 RESET
34 DO
33 01
32 02
31 03
30 04
29 Os
28 0 6
27 07
26 Vee
25 PB7
24 PB6
§23 PBs
22 PB4
21 PB3
PIN NAMES
DrDo
Reset
CS
RD
WR
Ao,A1
PArPAo
PBrPBo
PCrPCo
Vee
GND
Data Bus (Bi-Directional)
Reset Input
Chip Select
Read Input
Write Input
Port Address
Port A (Bit)
Port B (Bit)
Port C (Bit)
+5 Volts
o Volts
MAXIMUM RATINGS above which useful life may be impaired
Storage Temperature
Ambient Temperature Under Bias
Vee with Respect to Vss
All Signal Voltages with Respect to Vss
-0.5V to +7.0V
-0.5V to +7.0V
Power Dissipation
1.0W
The products described by this specification include internal circuitry designed to protect input devices from damaging accumulations
of static charge. It is suggested, nevertheless, that conventional precautions be observed during storage, handling and use in order to
avoid exposure to excessive voltages.
CAPACITANCE TA = 25°C; Vee = GND = OV
Parameter
Description
Test Conditions
Min. Typ. Max. Unit
Input Capacitance
fc = 1MHz
I/O Capacitance
Unmeasured pins returned to GND
TEST LOAD CIRCUIT (FOR DATA BUS)
·VEXT is set at various voltages during testing to guarantee the specification.
OPERATING RANGE
Part Number
Am8255ACC/PC
Am9555ADM
O°C to +70°C
-55°C to +125°C
DC CHARACTERISTICS Over Operating Range
Parameter
Description
Test Conditions
VIL
VIH
VodDB)
Input Low Voltage
Input High Voltage
Output Low Voltage (Data Bus)
10L = 2.5mA
VodPER)
VOH(DB)
Output Low Voltage (Peripheral Port)
Output High Voltage (Data Bus)
10L = 1.7mA
10H = -400JLA
VOH(PER)
Output High Voltage (Peripheral Port)
10H = -200JLA
IOAR (Note 1)
IcC
Darlington Drive Current
Power Supply Current
REXT = 750!l; VEXT = 1.5V
IlL Input Load Current
VIN = Vee to OV
10FL
Output Float Leakage
Note 1: Available on any 8 pins from Port Band C.
VOUT = Vee to OV
7-50
Min.
-0.5
2.0
2.4
2.4
-1.0
Typ.
Max.
0.8
Vee
0.45
0.45
-4.0
120
±10
±10
Units
Volts
Volts
Volts
Volts
Volts
Volts
rnA
rnA
JLA
JLA

विन्यास 5 पेज
डाउनलोड[ Am8255A Datasheet.PDF ]


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