PCA9501: 8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins
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 differs 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-bus software protocol serial data bus. The fixed GPIO address starts with '0' and the fixed EEPROM I²C-bus address starts with '1', 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.
PCA9501: Product Block Diagram
SOT163-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| 8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins (REV 4.0) PDF (170.0 kB) PCA9501 | 10 Feb 2009 |
Application Notes (5)
| Name/Description | Modified Date |
|---|---|
| PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus (REV 1.0) PDF (90.0 kB) AN256 | 23 Mar 2009 |
| Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 | 20 Jun 2007 |
| I2C/SMBus general purpose I/O expanders (REV 2.0) PDF (294.0 kB) AN469 | 20 Jan 2005 |
| I2C manual (REV 1.0) PDF (4.2 MB) AN10216 | 27 Mar 2003 |
| I2C 2002-1A Evaluation Board (REV 2.0) PDF (2.2 MB) AN10146 | 26 Feb 2003 |
Users Guides (4)
| Name/Description | Modified Date |
|---|---|
| I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 | 28 Apr 2014 |
| I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA | 03 Apr 2013 |
| PCA9698 demonstration board OM6281 (REV 1.0) PDF (558.0 kB) UM10267 | 26 Sep 2008 |
| I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 | 13 Jun 2006 |
Brochures (4)
| Name/Description | Modified Date |
|---|---|
| NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 | 01 Aug 2014 |
| Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 (REV 1.0) PDF (1.8 MB) 75016531 | 01 Jul 2008 |
| Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 75016543 | 01 Jun 2008 |
| Combination GPIO expanders and EEPROMs for smaller boards; NXP® 8-bit I2C/SMBus GPIO expanders with 2-K... (REV 1.0) PDF (227.0 kB) 75016018 | 01 Jun 2007 |
Package Information (3)
| Name/Description | Modified Date |
|---|---|
| plastic small outline package; 20 leads; body width 7.5 mm (REV 1.0) PDF (335.0 kB) SOT163-1 | 08 Feb 2016 |
| plastic thin shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (304.0 kB) SOT360-1 | 08 Feb 2016 |
| plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm (REV 1.0) PDF (209.0 kB) SOT662-1 | 08 Feb 2016 |
Packing (3)
| Name/Description | Modified Date |
|---|---|
| HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (266.0 kB) SOT662-1_118 | 18 Apr 2013 |
| SO20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 2.0) PDF (246.0 kB) SOT163-1_118 | 15 Apr 2013 |
| TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.0) PDF (225.0 kB) SOT360-1_118 | 15 Apr 2013 |
Reports or Presentations (1)
| Name/Description | Modified Date |
|---|---|
| design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 | 27 Jan 2003 |
Supporting Information (3)
| Name/Description | Modified Date |
|---|---|
| Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE | 30 Sep 2013 |
| Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE | 30 Sep 2013 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE | 08 Oct 2009 |
IBIS Model
- PCA9501 IBIS model (REV 1.0) ibs PCA9501_1 8/12/2014
Ordering Information
| Product | Status |
|---|---|
| PCA9501PW | Active |
| PCA9501D | Active |
| PCA9501BS | Active |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9501D | | SOT163-1 | Reflow_Soldering_Profile
Wave_Soldering_Profile Reflow_Soldering_Profile Wave_Soldering_Profile | Reel 13" Q1/T1 | Active | PCA9501D,118 (9352 723 64118) | PCA9501D | PCA9501D |    | week 5, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9501D,112 (9352 723 64112) | PCA9501D | PCA9501D | | week 5, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 | ||||
| PCA9501BS |  | SOT662-1 | Reel 13" Q1/T1 | Active | PCA9501BS,118 (9352 738 13118) | 9501 | PCA9501BS |  | Always Pb-free | 0.0 | 2.0 | 5E8 | 1 | 1 | |
| PCA9501PW |  | SOT360-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9501PW,118 (9352 715 35118) | PCA9501 | PCA9501PW | | week 3, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9501PW,112 (9352 715 35112) | PCA9501 | PCA9501PW | | week 3, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
- PCA9500/PCA9501 provides simple card maintenance and control using I²C-bus PCA9553
- Level shifting techniques in I2C-bus design pca9685pw
- I2C/SMBus general purpose I/O expanders pcf8575ts
- I2C manual se98apw
- I2C 2002-1A Evaluation Board lm75a
- I2C-bus specification and user manual pca9685pw
- I2C-bus specification and user manual pca9685pw
- PCA9698 demonstration board OM6281 PCA9553
- I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
- NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
- Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 lm75a
- Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
- Combination GPIO expanders and EEPROMs for smaller boards; NXP® 8-bit I2C/SMBus GPIO expanders with 2-K... pcf8582c-2t
- design_con_2003_tecforum_i2c_b_1 lm75a
- PCA9501 IBIS model PCA9501PW
- SOT163-1 LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- Reel 13" Q1/T1 LPC812M101JD20
- plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm bga3131
- HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... bga3131
- SOT360-1 LPC1112FDH20
- SSOP-TSSOP-VSO-WAVE LPC1114FDH28
- Reel 13" Q1/T1 LPC824M201JDH20
- PCA9501
- SA615
- BGA3031
- PCA9634
