NTE6821 NTE ELECTRONICS, NTE6821 Datasheet

Replacement Semiconductors PERH INTF ADP 40DIP

NTE6821

Manufacturer Part Number

NTE6821

Description

Replacement Semiconductors PERH INTF ADP 40DIP

Manufacturer

NTE ELECTRONICS

Datasheet

1.NTE6821.pdf (5 pages)

Specifications of NTE6821

Supply Voltage Range

4.75V To 5.25V

Power Dissipation Pd

550mW

Operating Temperature Range

0Â°C To +70Â°C

Digital Ic Case Style

DIP

No. Of Pins

Termination Type

Through Hole

Filter Terminals

Through Hole

Features

Peripheral Interface Adapter

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Description:

The NTE6821 is a peripheral interface adapter (PIA) in a 40–Lead DIP type package capable of inter-

facing the Microprocessing Unit (MPU) to peripherals through two 8–Bit bidirectional peripheral data

buses and four control lines. No external logic is required for interfacing to most peripheral devices.

The functional configuration of the PIA is programmed by the MPU during system initialization. Each

of the peripheral data lines can be programmed to act as an input or output, and each of the four con-

trol/interrupt lines may be programmed for one of several control modes. This allows a high degree

of flexibility in the over–all operation of the interface.

Features:

D 8–Bit Bidirectional Data Bus for Communication with the MPU

D Two Bidirectional 8–Bit Buses for Interface to Peripherals

D Two Programmed Control Registers

D Two Programmed Data Direction Registers

D Four Individually–Controlled Interrupt Input Lines; Two Usable as Peripheral Control Outputs

D Handshake Control Logic for Input and Output Peripheral Operation

D High–Impedance 3–State and Direct Transistor Drive Peripheral Lines

D Program Controlled Interrupt and Interrupt Disable Capability

D CMOS Drive Capability on Side A Peripheral Lines

D Two TTL Drive Capability on All A and B Side Buffers

D TTL Compatible

D Static Operation

Absolute Maximum Ratings: (Note 1)

Supply Voltage, V

Input Voltage, V

Operating Temperature Range, T

Storage Temperature Range, T

Thermal Resistance, Junction to Ambient, R

Note 1. This device contains circuitry to protect the inputs against damage due to high static voltages

or electric fields; however, it is advised that normal precautions be taken to avoid application

of any voltage higher than maximum rated voltages to this high impedance.

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Peripheral Interface Adapter (PIA),

stg

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Integrated Circuit

NMOS, 1MHz

NTE6821

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–55 to +150 C

–0.3 to +7V

0 to +70 C

82.5 C/W

Related parts for NTE6821

NTE6821 Summary of contents

Page 1

... Peripheral Interface Adapter (PIA), Description: The NTE6821 is a peripheral interface adapter (PIA 40–Lead DIP type package capable of inter- facing the Microprocessing Unit (MPU) to peripherals through two 8–Bit bidirectional peripheral data buses and four control lines. No external logic is required for interfacing to most peripheral devices. ...

Page 2

Electrical Characteristics: (V Parameter Bus Control Inputs (R/W, Enable, Reset, RS0, RS1, CS0, CS1, CS2) Input High Voltage Input Low Voltage Input Leakage Current Capacitance Interrupt Outputs (IRQA, IRQB) Output Low Voltage Output Leakage Current (Off State) Capacitance Data Bus ...

Page 3

Bus Timing Characteristics (Cont’d): (V Parameter Setup Time, Address and R/W Valid to Enable Positive Transition Address Hold Time Data Delay Time, Read Data Hold Time, Read Data Setup Time, Write data Hold Time, Write Peripheral Timing Characteristics: Peripheral Data ...

Page 4

Expanded Block Diagram IRQA Data Bus D3 30 Buffers D4 29 (DBB Bus Input Register (BIR PIN20 PIN1 SS CS0 22 CS1 ...

Page 5

Max .650 (16.5) ...

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