82C55A

IC PPI 24 I/O 5V 40-PDIP

The 82C55A is a CMOS programmable peripheral interface device with 24 programmable I/O pins, TTL compatible, supporting 5MHz/8MHz microprocessors, available in 40-lead PDIP, 44-lead PLCC/MQFP packages.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

20 items

Parameter	Value and test conditions	Source
Package	40 Ld PDIP (Pb-free), 44 Ld PLCC (Pb-free), 44 Ld MQFP (Pb-free), 40 Ld CERDIP, 44 Ld CLCC
Operating Temperature Range	0 to +70°C, -40 to +85°C, -55 to +125°C
RoHS	Compliant (Pb-Free Plus Anneal Available)
Supply Voltage	Max +8.0V (Absolute Maximum), +4.5V to 5.5V (Operating)
Input, Output or I/O Voltage	GND-0.5V to VCC+0.5V
ESD Classification	Class 1
Drive Capability	2.5mA on All I/O Ports
Standby Current (ICCSB)	10µA
Programmable I/O Pins	24
Maximum Storage Temperature Range	-65°C to +150°C
Maximum Junction Temperature	+175°C (CDIP Packages), +150°C (PDIP Packages)
Maximum Lead Temperature (Soldering 10s)	+300°C
Thermal Resistance (PDIP)	θJA: 50°C/W, θJC: N/A
Thermal Resistance (PLCC)	θJA: 55°C/W, θJC: N/A
Thermal Resistance (MQFP)	θJA: 62°C/W, θJC: N/A
Thermal Resistance (CERDIP)	θJA: 50°C/W, θJC: 10°C/W
Thermal Resistance (CLCC)	θJA: 65°C/W, θJC: 14°C/W
TTL Compatibility	Fully TTL Compatible
Bus Hold Circuitry	Present (Eliminates need for pull-up resistors)
Bit Set/Reset Capability	Direct Bit Set/Reset Capability

All parameters (7)ExpandCollapse

Power
Standby Power (ICCSB)	10µA
Supply Voltage	+8.0V
Voltage Range	+4.5V to 5.5V
Environment and package
Operating Temperature Range	-40 to +85
Package	40 Ld PDIP (Pb-free)
Other
Drive Capability	2.5mA
ESD Classification	Class 1

Pinout and package

Pinouts — Package: **40 Ld PDIP (Pb-free), 44 Ld PLCC (Pb-free), 44 Ld MQFP (Pb-free), 40 Ld CERDIP, 44 Ld CLCC**

Pin	Name	Function	Source
A0-A1		Address, in conjunction with RD and WR inputs, control selection of one of three ports or control word register
CS		Chip Select, active low input, used to enable 82C55A for CPU communications
D0-D7		Data Bus, bidirectional three-state pins connected to the system data bus
GND		Ground
PA0-PA7		Port A, 8-bit input and output port, bus hold high and bus hold low circuitry present
PB0-PB7		Port B, 8-bit input and output port, bus hold high circuitry present
PC0-PC7		Port C, 8-bit input and output port, bus hold circuitry present
RD		Read, active low input control signal, used by CPU to read status information or data via data bus
RESET		Reset, high clears control register, all ports (A, B, C) set to input mode, Bus Hold circuitry turned on
VCC		Power supply pin, +5V, recommended 0.1μF capacitor to GND for decoupling
WR		Write, active low input control signal, used by CPU to load control words and data into 82C55A

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