Overview
The PCF8584T, produced by NXP USA Inc., is an integrated circuit designed to serve as an interface between standard parallel-bus microcontrollers/microprocessors and the serial I²C-bus. This CMOS technology-based IC is versatile, supporting both master and slave functions on the I²C-bus. It facilitates bidirectional communication between parallel-bus systems and the I²C-bus, managing all I²C-bus specific sequences, protocol, arbitration, and timing.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SO20 (Small Outline Package, 20 leads, body width 7.5 mm) |
| Operating Supply Voltage | 4.5 to 5.5 V |
| Operating Temperature Range | −40 to +85 °C |
| Interface Type | I²C-bus controller, compatible with most parallel-bus microcontrollers/microprocessors (e.g., 8049, 8051, 6800, 68000, Z80) |
| Bus Mode | Master and Slave functions, multi-master capability, I²C-bus monitor mode, long-distance mode (4-wire) |
| Interrupt Vector | Programmable interrupt vector |
| Communication | Byte-wise communication using interrupt or polled handshake |
Key Features
- Parallel-bus to I²C-bus protocol converter and interface
- Compatible with various microcontrollers/microprocessors including 8049, 8051, 6800, 68000, and Z80
- Supports both master and slave functions on the I²C-bus
- Automatic detection and adaptation to bus interface type
- Multi-master capability and I²C-bus monitor mode
- Long-distance mode (4-wire)
- Programmable interrupt vector
Applications
The PCF8584T is suitable for a variety of applications where communication between parallel-bus systems and the I²C-bus is required. This includes embedded systems, industrial control systems, automotive electronics, and any system that needs to interface between parallel and serial communication protocols.
Q & A
- What is the primary function of the PCF8584T?
The primary function of the PCF8584T is to act as an interface between standard parallel-bus microcontrollers/microprocessors and the serial I²C-bus. - What are the supported microcontrollers/microprocessors?
The PCF8584T is compatible with most parallel-bus microcontrollers/microprocessors, including 8049, 8051, 6800, 68000, and Z80. - What are the operating voltage and temperature ranges of the PCF8584T?
The operating supply voltage is 4.5 to 5.5 V, and the operating temperature range is −40 to +85 °C. - Does the PCF8584T support master and slave functions?
Yes, the PCF8584T supports both master and slave functions on the I²C-bus. - What is the package type of the PCF8584T?
The package type is SO20 (Small Outline Package, 20 leads, body width 7.5 mm). - Does the PCF8584T have multi-master capability?
Yes, the PCF8584T has multi-master capability and supports I²C-bus monitor mode and long-distance mode (4-wire). - How does the PCF8584T handle communication?
The PCF8584T handles communication on a byte-wise basis using interrupt or polled handshake. - Is the interrupt vector programmable?
Yes, the interrupt vector is programmable. - What are some typical applications of the PCF8584T?
Typical applications include embedded systems, industrial control systems, and automotive electronics where parallel-bus to I²C-bus communication is necessary. - How does the PCF8584T manage I²C-bus specific sequences?
The PCF8584T controls all I²C-bus specific sequences, protocol, arbitration, and timing.
