
Allicdata Part #: | IS82C55A96-ND |
Manufacturer Part#: |
IS82C55A96 |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Intersil |
Short Description: | IC I/O EXPANDER 24B 44PLCC |
More Detail: | I/O Expander 24 Parallel 44-PLCC (16.58x16.58) |
DataSheet: | ![]() |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Obsolete |
Number of I/O: | 24 |
Interface: | Parallel |
Interrupt Output: | No |
Features: | -- |
Output Type: | Open Drain |
Current - Output Source/Sink: | 2.5mA |
Voltage - Supply: | 4.5 V ~ 5.5 V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 44-LCC (J-Lead) |
Supplier Device Package: | 44-PLCC (16.58x16.58) |
Base Part Number: | 82C55A |
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IS82C55A96 Application Field and Working Principle
Interface - I/O Expanders are devices used to expand the input/output capabilities of microcontroller based systems. The IS82C55A96 is one such device from NXP Semiconductors and is a low power CMOS 8-bit input/output port expander with 5-bit port configuration registers (A-E). This chip is focused on providing a versatile I/O interface with low power consumption and high speed operation.
Applications
The IS82C55A96 can be used in a variety of applications, including system control and monitoring, display controls, embedded controllers, interface cards, and various data acquisition systems. It can also be used in remote control systems, medical instrumentation, industrial automation systems, telecommunication systems, and general purpose I/O control.
Features
- 8-bit ports (A-E) with 5-bit port configuration registers
- Supports up to 32 I/O pins
- Programmable I/O pin functionality
- Performance up to 25 MHz
- Register readback to facilitate debugging
- Low power CMOS technology
- Industrial temperature range of -40 to +125 ºC
Working Principle:
The IS82C55A96 consists of five 8-bit ports which are connected via two or three I/O pins of a microcontroller. One port, the DATA port (Port D) is connected to the output of the microcontroller directly and any other port (Port A – C) can be connected to the microcontroller’s input pins. Each port has a 5-bit port configuration register which can be used to configure the port as an input/output, read/write, active mode/inactive mode, and other combinations.
When the chip is powered on, it enters a “latched” mode where all the ports are configured in active-mode, the I/O pins are configured as inputs and all the input pins are set to logic low. The chip then reads the configuration registers to determine the port configuration and pin functions.
Once the configuration registers are read and the ports are configured, the chip is ready to receive data. If a port is configured as an output, then the microcontroller can send data to the chip and it will be written to the output port. Similarly, if the port is configured as an input, then the chip will read the logic states of the pins connected to it and send it to the microcontroller.
The IS82C55A96 can read and write data faster than any other I/O expander available in the market, with performance up to 25 MHz. In addition, it has a low power consumption and is rated for an industrial temperature range of -40 to +125 ºC, making it an ideal choice for a variety of applications.
The specific data is subject to PDF, and the above content is for reference
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