Overview
The PCA9559PW,118 is a specialized interface IC produced by NXP USA Inc. This 20-pin CMOS device is designed to provide flexible configuration options for various electronic systems. It features a combination of non-volatile EEPROM registers, hardware pin inputs, and multiplexed outputs, making it ideal for applications requiring dynamic system configuration without the need for DIP switches or jumpers.
The device supports I²C and SMBus interfaces, allowing for easy communication and configuration via these protocols. It is particularly useful in mobile and desktop systems for CPU Voltage ID (VID) configuration, enabling the adjustment of processor voltage for performance or power-saving modes.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | NXP USA Inc. |
| Package | 20-TSSOP (0.173", 4.40mm Width) |
| Interface | I²C, SMBus |
| Voltage - Supply | 3V ~ 3.6V |
| Mounting Type | Surface Mount |
| Number of Inputs | 5 hardware pin inputs |
| Number of Outputs | 5-bit multiplexed, 1-bit latched |
| Non-Volatile Memory | 6-bit internal non-volatile register |
| Address Pins | 2 address pins (up to 4 devices on the same I²C-bus) |
| RoHS Status | ROHS3 Compliant |
| Memory Cell Data Retention | 10 years (minimum) |
| Number of Memory Cell Write Cycles | 100,000 cycles (minimum) |
Key Features
- 5-bit 2-to-1 multiplexer and 1-bit latch for DIP switch functionality
- 6-bit internal non-volatile register programmable and readable via I²C-bus
- Override input to force all outputs to logic 0
- 5 open-drain multiplexed outputs and 1 open-drain non-multiplexed (latched) output
- 5 V and 2.5 V tolerant inputs/outputs
- Useful for ‘jumperless’ configuration of PC motherboards and other systems
- Supports Mobile and Desktop VID Configuration for CPU voltage adjustment
Applications
- PCs and PDA systems for dynamic configuration without DIP switches or jumpers
- Server and telecom/networking applications for easy configuration changes via I²C/SMBus
- CPU VID (Voltage IDentification code) configuration in mobile and desktop systems
- General system configuration where non-volatile memory and multiplexed outputs are required
Q & A
- What is the PCA9559PW,118 used for?
The PCA9559PW,118 is used for dynamic system configuration, replacing DIP switches or jumpers, and for CPU VID configuration in mobile and desktop systems.
- What interface does the PCA9559PW,118 support?
The PCA9559PW,118 supports I²C and SMBus interfaces.
- What is the supply voltage range for the PCA9559PW,118?
The supply voltage range is 3V to 3.6V.
- How many devices can be placed on the same I²C-bus?
Up to 4 devices can be placed on the same I²C-bus due to the 2 address pins.
- What is the non-volatile memory retention time for the PCA9559PW,118?
The non-volatile memory retains data for a minimum of 10 years.
- How many write cycles can the non-volatile memory handle?
The non-volatile memory can handle a minimum of 100,000 write cycles.
- Is the PCA9559PW,118 RoHS compliant?
- What type of outputs does the PCA9559PW,118 have?
The PCA9559PW,118 has 5 open-drain multiplexed outputs and 1 open-drain non-multiplexed (latched) output.
- Can the PCA9559PW,118 be used in server and telecom applications?
- What is the package type of the PCA9559PW,118?
The package type is 20-TSSOP (0.173", 4.40mm Width).
