PCA9531 Philips Semiconductors (Acquired by NXP), PCA9531 Datasheet - Page 14

• Manufacturer Part Number: PCA9531
• Description: 8-bit I2C Led Dimmerthe PCA9531 is an 8-bit i C And 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 User Progr
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
2003 Nov 10
8-bit I
SCL
SDA
RESET
LEDx
SDA
SCL
2
C LED dimmer
P
50%
t
BUF
t
REC
S
START
30%
t
HD;STA
t
LOW
t
t
R
HD;DAT
Figure 18. Definition of RESET timing
Figure 19. Definition of timing
t
HIGH
t
F
14
t
SU;DAT
Sr
50%
ACK OR READ CYCLE
t
SU;STA
t
t
HD;STA
W
t
t
REC
REC
50%
50%
t
SP
LED OFF
t
SU;STO
PCA9531
SW01087
SU00645
P
Product data