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PCA9559
Datasheet
(Product Specification)
27-Jun-03, 11 pages, 83 kB
General description
The PCA9559 is a 20-pin CMOS device consisting of one 6-bit non-volatile EEPROM registers, 5 hardware pin inputs and a 5-bit multiplexed output with one latched EEPROM bit. It is used for DIP switch-free or jumper-less system configuration and supports Mobile and Desktop VID Configuration, where 2 preset values (1 set of internal non-volatile registers and 1 set of external hardware pins) set processor voltage for operation in either performance or deep sleep modes. The PCA9559 is also useful in server and telecom/networking applications when used to replace DIP switches or jumpers, since the settings can be easily changed via I2C/SMBus without having to power down the equipment to open the cabinet. The non-volatile memory retains the most current setting selected before the power is turned off.
The PCA9559 typically resides between the CPU and Voltage Regulator Module (VRM) when used for CPU VID (Voltage IDentification code) configuration. It is used to bypass the CPU-defined VID values and provide a different set of VID values the VRM, if an increase in the CPU voltage is desired. An increase in CPU voltage combined with an increase in CPU frequency leads to a performance boost of up to 7.5pct. Lower CPU voltage reduces power consumption.
The PCA9559 has 2 address pins allowing up to 4 devices to be placed on the same I2C-bus or SMBus.
Features
- 5-bit 2-to-1 multiplexer, 1-bit latch DIP switch
- 6-bit internal non-volatile register
- Internal non-volatile register programmable and readable via I2C-bus
- Override input forces all outputs to logic 0
- 5 open drain multiplexed outputs
- 1 open drain non-multiplexed (latched) output
- 5 V and 2.5 V tolerant inputs
- Useful for ?jumperless? configuration of PC motherboards
- 2 address pins, allowing up to 4 devices on the I2C-bus
- ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
- Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100 mA
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| PCA9559PW | PCA9559PW,112 | 9352 653 06112 | Volume production | SOT360 | Tube | Standard Marking | |
| PCA9559PW | PCA9559PW,118 | 9352 653 06118 | Volume production | SOT360 | Reel Pack, SMD, 13" | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| PCA9559PW | PCA9559PW,112 | PCA9559PW |
| week 13, 2005 | ||||
| PCA9559PW | PCA9559PW,118 | PCA9559PW |
| week 13, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| PCA9559PW | 9352 653 06112 | PCA9559PW,112 | 0.9400 | NA | ARROW ELECTRONICS | 96 | 11/6/2009 | Buy online | not available | |
| NA | DIGI-KEY CORPORATION | 1,633 | 11/7/2009 | Buy online | ||||||
| PCA9559PW | 9352 653 06118 | PCA9559PW,118 | 0.9400 | NA | MOUSER ELECTRONICS | 2,500 | 11/7/2009 | Buy online | Order samples | |
| NA | FUTURE ELECTRONICS | 200 | 11/7/2009 | Buy online |
Design support
Application Notes
AN10216_1;
I2C manual (2003-03-27)AN10216_1;
I2C manual (2003-03-27)AN10216_1;
I2C manual (2003-03-27)
Support Documents
39340011_21;
I2C-bus specification (version 2.1) (2000-01-01)UM10204_3;
I2C-bus specification and user manual (2007-06-26)Parametrics/similar products
| Type number | Package | Operating temp.(Cel) | I²C-bus(kHz) | Operating voltage(VDC) | # of Outputs/Latched Outputs/Internal EEPROM Registers | Max Sink Current per bit(mA) | # of Addresses | Max Sink Current per package(mA) |
|---|---|---|---|---|---|---|---|---|
| PCA9559PW | SOT360
| 0~70 | 400 | 3.0~3.6 | 5?1?1 | 20 | 4 | 80 |
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