PCA9530D, PCA9530DP, PCA9531 Selling Leads, Datasheet
MFG:NXP Package Cooled:07+ D/C:2000
PCA9530D, PCA9530DP, PCA9531 Datasheet download
Part Number: PCA9530D
MFG: NXP
Package Cooled: 07+
D/C: 2000
PCA9530D, PCA9530DP, PCA9531
- Table of contents:
Info of PCA9530D
Info of PCA9530DP
Info of PCA9531
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About PCA9530D
PDF/DataSheet Download
Datasheet: PCA9530D
File Size: 125966 KB
Manufacturer: PHILIPS [Philips Semiconductors]
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About PCA9530DP
PDF/DataSheet Download
Datasheet: PCA9530DP
File Size: 125966 KB
Manufacturer: PHILIPS [Philips Semiconductors]
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About PCA9531
PDF/DataSheet Download
Datasheet: PCA9531
File Size: 157812 KB
Manufacturer: PHILIPS [Philips Semiconductors]
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PCA9531 General Description
The PCA9531 is an 8-bit I2C & SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.
The PCA9531 contains an internal oscillator with two userprogrammable blink rates and duty cycles coupled to the output PWM. The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking can not be seen and then using the duty cycle to vary the amount of time the LED is on and thus theaverage current through the LED.
The initial setup sequence programs the two blink rates/duty cyclesfor each individual PWM. From then on, only one command from thebus master is required to turn individual LEDs ON, OFF, BLINKRATE 1 or BLINK RATE 2. Based on the programmed frequencyand duty cycle, BLINK RATE 1 and BLINK RATE 2 will cause theLEDs to appear at a different brightness or blink at periods up to 1.6second. The open drain outputs directly drive the LEDs with maximum output sink current of 25 mA per bit and 100 mA per package.
To blink LEDs at periods greater than 1.6 second the bus master(MCU, MPU, DSP, chipset, etc.) must send repeated commands to turn the LED on and off as is currently done when using normal I/OExpanders like the Philips PCF8574 or PCA9554. Any bits not usedfor controlling the LEDs can be used for General Purpose ParallelInput/Output (GPIO) expansion which provides a simple solution when additional I/O is needed for ACPI power switches, sensors,push buttons, alarm monitoring, fans, etc.
The active low hardware reset pin (RESET) and Power On Reset(POR) initializes the registers to their default statecausing the bits to be set high (LED off).
Three hardware address pins on the PCA9531 allow eight devicesto operate on the same bus.
The PCA9531 contains an internal oscillator with two userprogrammable blink rates and duty cycles coupled to the output PWM. The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking can not be seen and then using the duty cycle to vary the amount of time the LED is on and thus theaverage current through the LED.
The initial setup sequence programs the two blink rates/duty cyclesfor each individual PWM. From then on, only one command from thebus master is required to turn individual LEDs ON, OFF, BLINKRATE 1 or BLINK RATE 2. Based on the programmed frequencyand duty cycle, BLINK RATE 1 and BLINK RATE 2 will cause theLEDs to appear at a different brightness or blink at periods up to 1.6second. The open drain outputs directly drive the LEDs with maximum output sink current of 25 mA per bit and 100 mA per package.
To blink LEDs at periods greater than 1.6 second the bus master(MCU, MPU, DSP, chipset, etc.) must send repeated commands to turn the LED on and off as is currently done when using normal I/OExpanders like the Philips PCF8574 or PCA9554. Any bits not usedfor controlling the LEDs can be used for General Purpose ParallelInput/Output (GPIO) expansion which provides a simple solution when additional I/O is needed for ACPI power switches, sensors,push buttons, alarm monitoring, fans, etc.
The active low hardware reset pin (RESET) and Power On Reset(POR) initializes the registers to their default statecausing the bits to be set high (LED off).
Three hardware address pins on the PCA9531 allow eight devicesto operate on the same bus.
PCA9531 Maximum Ratings
| SYMBOL | PARAMETER | CONDITIONS | MIN | MAX | UNIT |
| VDD | Supply voltage | -0.5 | 6.0 | V | |
| VI/O | DC input current on an I/O | VSS - 0.5 | 5.5 | V | |
| II/O | DC output current on an I/O | - | ± 55 | mA | |
| ISS | Supply current | - | 200 | mA | |
| Ptot | Total power dissipation | - | 400 | mW | |
| Tstg | Storage temperature range | -65 | +150 | ||
| Tamb | Operating ambient temperature | -40 | +85 |
PCA9531 Features
• Eight LED drivers (on, off, flashing at a programmable rate)
• Two selectable, fully programmable blink rates (frequency andduty cycle) between 0.625 and 160 Hz (1.6 and 6.25 milliseconds)
• 256 brightness steps
• Input/outputs not used as LED drivers can be used as regular GPIOs
• Internal oscillator requires no external components
• I2C interface logic compatible with SMBus
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active low reset input
• Eight open drain outputs directly drive LEDs to 25 mA
• Edge rate control on outputs
• No glitch on power-up
• Supports hot insertion
• Low stand-by current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114,150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Package offer: SO16, TSSOP16, HVQFN16
• Two selectable, fully programmable blink rates (frequency andduty cycle) between 0.625 and 160 Hz (1.6 and 6.25 milliseconds)
• 256 brightness steps
• Input/outputs not used as LED drivers can be used as regular GPIOs
• Internal oscillator requires no external components
• I2C interface logic compatible with SMBus
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active low reset input
• Eight open drain outputs directly drive LEDs to 25 mA
• Edge rate control on outputs
• No glitch on power-up
• Supports hot insertion
• Low stand-by current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114,150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Package offer: SO16, TSSOP16, HVQFN16
PCA9531 Connection Diagram
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