PCA9626B NXP Semiconductors, PCA9626B Datasheet - Page 26

• Manufacturer Part Number: PCA9626B
• Description: IC, LED DRIVER, RGBA, 48-LQFP
• Manufacturer: NXP Semiconductors

Specifications of PCA9626B

• No. Of Outputs: 24
• Output Current: 100mA
• Output Voltage: 40V
• Input Voltage: 2.3V To 5.5V
• Dimming Control Type: PWM
• Driver Case Style: LQFP
• Switching Frequency: 1MHz
• Base Number: 9626
• Operating: RoHS Compliant
• Led Driver Application: RGB Or RGBA LED Drivers, LED Status Information, Displays, Backlights
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Details

NXP Semiconductors
8. Characteristics of the I
PCA9626_2
Product data sheet
8.1.1 START and STOP conditions
8.1 Bit transfer
8.2 System configuration
The I
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as control signals (see
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW
transition of the data line while the clock is HIGH is defined as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
A device generating a message is a ‘transmitter’; a device receiving is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices which are controlled by
the master are the ‘slaves’ (see
Fig 8.
Fig 9.
2
C-bus is for 2-way, 2-line communication between different ICs or modules. The two
SDA
SCL
Bit transfer
Definition of START and STOP conditions
START condition
2
SDA
SCL
Figure
C-bus
Rev. 02 — 31 August 2009
S
9).
Figure
data valid
data line
stable;
10).
Figure
24-bit Fm+ I
allowed
change
of data
8).
2
C-bus 100 mA 40 V LED driver
STOP condition
mba607
PCA9626
P
© NXP B.V. 2009. All rights reserved.
mba608
26 of 47