Select site:
- English
PCA9501
Datasheet
General description
The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.
The I/O expandable eight quasi bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each Input or Output is kept in the corresponding Input or Output register. The system master can read all registers.
The EEPROM can be used to store error codes or board manufacturing data for read-back by application software for diagnostic purposes and are included in the I/O expander package.
The PCA9501 Active-LOW open-drain interrupt output is activated when any input state differes from its corresponding input port register state. It is used to indicate to the system master that an input state has changed and the device needs to be interrogated.
The PCA9501 has six address pins with internal pull-up resistors allowing up to 64 devices to share the common two wire I2C software protocol serial data bus. The fixed GPIO address starts with "1" and the fixed EEPROM I2C address starts with "0", so the PCA9501 appears as two separate devices to the bus master.
The PCA9501 supports hot insertion to facilitate usage in removable cards on backplane systems.
Features
- 8 general purpose input/output expander/collector
- Replacement for PCF8574 with integrated 2-kbit EEPROM
- Internal 256 x 8 EEPROM
- Self timed write cycle (5 ms typ)
- 16 byte page write operation
- I2C and SMBus interface logic
- Internal power-on reset
- Noise filter on SCL/SDA inputs
- Active low interrupt output
- 6 address pins allowing up to 64 devices on the I2C/SMBus
- No glitch on power-up
- Supports hot insertion
- Power-up with all channels configured as inputs
- Low standby current
- Operating power supply voltage range of 2.5 V to 3.6 V
- 5 V tolerant inputs/outputs
- 0 to 400 kHz clock frequency
- 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
- Packages offered: SO20, TSSOP20, HVQFN20
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| PCA9501BS | PCA9501BS-T | 9352 738 13118 | Volume production | SOT662-1
(HVQFN20) | Reel Pack, SMD, 13" | Standard Marking | PCA9501BS
| Always Pb-free |
| PCA9501D | PCA9501D | 9352 723 64112 | Volume production | SOT163-1
(SO20) | Tube | Standard Marking | PCA9501D
| week 5, 2005 |
| PCA9501D | PCA9501D-T | 9352 723 64118 | Volume production | SOT163-1
(SO20) | Tape reel smd | Standard Marking | PCA9501D
| week 5, 2005 |
| PCA9501PW | PCA9501PW | 9352 715 35112 | Volume production | SOT360-1
(TSSOP20) | Tube | Standard Marking | PCA9501PW
| week 3, 2005 |
| PCA9501PW | PCA9501PW-T | 9352 715 35118 | Volume production | SOT360-1
(TSSOP20) | Reel Pack, SMD, 13" | Standard Marking | PCA9501PW
| week 3, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| PCA9501BS | 9352 738 13118 | 1.2500 | NA | DIGI-KEY CORPORATION | 6,000 | 8/28/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 5,795 | 8/28/2008 | Buy online | ||||
| PCA9501D | 9352 723 64112 | 1.2500 | NA | ARROW ELECTRONICS | 1,012 | 8/27/2008 | Buy online | not available |
| PCA9501D | 9352 723 64118 | 1.2500 | Order samples | |||||
| PCA9501PW | 9352 715 35112 | 1.2500 | NA | ARROW ELECTRONICS | 243 | 8/27/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 1,423 | 8/27/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 2,968 | 8/28/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 972 | 8/27/2008 | Buy online | ||||
| PCA9501PW | 9352 715 35118 | 1.2900 | ASIA | WPI | 25,000 | 08/28/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 5,000 | 8/27/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,764 | 8/28/2008 | Buy online |
Applications
Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
PCI analog/DVB-T stereo TV receiver
Nexperia UMA-enabled GSM/GPRS/EDGE VAS system solution (6100)
Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality
Technical documents
Application Notes
AN10146_02;
I2C 2002-1A Evaluation Board (26-Feb-03)
AN10216_1;
I2C manual (27-Mar-03)
AN469_2;
I2C/SMBus general purpose I/O expanders (20-Jan-05)
Support Documents
75016543;
An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances (2008-06-01)
75013239;
I 2 C Logic Selection Guide (2005-01-12)
75011212;
I2C 2002-1A Evaluation Board Kit (01-Mar-03)
75012744;
I2C Bus Solutions 2004 (2004-02-01)
philips_i2c_handbook;
I2C Handbook (2004-01-01)
UM10204_3;
I2C-bus specification and user manual (26-Jun-07)
75016189;
NXP I (2008-06-01)
75016531;
NXP I (2008-07-01)
75009897;
PCA9500/PCA9501 (2002-06-01)
pca9501;
PCA9501 8-bit I2C & SMBus I/O port w/ interrupt & 2K EEPROM (renamed from PTN3501A) (2002-05-06)
Parametrics/similar products
| Type number | Package | INTERRUPT | Operating temp.(Cel) | # of Bits | Memory Size(kBits) | Source Current per bit(mA) | I²C-bus(kHz) | Operating voltage(VDC) | Weak Pull-Up Current Source | Max Sink Current per bit(mA) | # of Addresses | Max Sink Current per package(mA) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9501BS | SOT662-1
(HVQFN20) | 0-1 | -40~85 | 8 | 2 | 0.1 | 400 | 2.5~3.6 | yes | 25 | 64 | 100 |
| PCA9501D | SOT163-1
(SO20) | 0-1 | -40~85 | 8 | 2 | 0.1 | 400 | 2.5~3.6 | yes | 25 | 64 | 100 |
| PCA9501PW | SOT360-1
(TSSOP20) | 0-1 | -40~85 | 8 | 2 | 0.1 | 400 | 2.5~3.6 | yes | 25 | 64 | 100 |
Similar products
PCA9501 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
Disclaimer
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.