Details

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BUY 82C55AC-2 NEC82C55AC-2 DIP40 https://www.utsource.net/itm/p/12604086.html

Parameter	Description
Part Number	82C55AC-2, NEC82C55AC-2
Package Type	DIP40
Function	Programmable Peripheral Interface (PPI)
Operating Voltage	Vcc = +5V 卤 10%
Supply Current	ICC = 10mA (Typical at Ta = 25掳C)
Data Bus Width	8-bit
Ports	Three 8-bit ports (Port A, Port B, Port C)
Operating Temperature	-40掳C to +85掳C (Commercial Grade), -55掳C to +125掳C (Military Grade)
Clock Frequency	10MHz (Maximum)
Input/Output Lines	24 I/O lines
Control Logic	8 control lines
Manufactured By	NEC

Instructions for Use

1. Power Supply Connection:

   • Connect the Vcc pin to a +5V power supply and GND pin to ground.

2. Bus Connection:

   • Connect the data bus (D0-D7) to the system data bus.
   • Address lines (A0-A1) should be connected to the address bus of the microprocessor.

3. Control Signals:

   • Connect the Chip Select (CS), Read (RD), Write (WR), and Interrupt Acknowledge (INTA) signals as per your system requirements.

4. Port Configuration:

   • Configure Port A, Port B, and Port C using the Control Word Register (CWR). The configuration can be set to input or output mode based on the application needs.

5. Programming:

   • Program the device using the standard IN and OUT instructions of the microprocessor. Refer to the datasheet for specific programming details.

6. Interrupt Handling:

   • Utilize the interrupt capability by configuring the appropriate bits in the Control Word Register.

7. Initialization:

   • Ensure proper initialization of the 82C55AC-2 with the correct control word before any data transfer operations.

8. Testing:

   • After setup, test each port for correct operation using simple read/write operations.

9. Handling Precautions:

   • Handle the DIP40 package with care to avoid damage to pins. Ensure static protection during handling and installation.

For detailed timing diagrams, electrical characteristics, and additional specifications, refer to the official datasheet provided by NEC.

(For reference only)