PCA9552D NXP Semiconductors, PCA9552D Datasheet - Page 10

• Manufacturer Part Number: PCA9552D
• Description: LED Drivers I2C LED BLINKR 16BIT
• Manufacturer: NXP Semiconductors

Specifications of PCA9552D

• Number Of Segments: 16
• Low Level Output Current: 25000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 550 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-137
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9552D,112

Philips Semiconductors
7. Characteristics of the I
PCA9552_5
Product data sheet
7.1.1 START and STOP conditions
7.1 Bit transfer
7.2 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 7. Bit transfer
Fig 8. Definition of START and STOP conditions
2
C-bus is for 2-way, 2-line communication between different ICs or modules. The two
SDA
SCL
START condition
2
SDA
SCL
Figure
C-bus
S
Rev. 05 — 9 March 2006
8.)
16-bit I
Figure
data valid
data line
stable;
2
C-bus LED driver with programmable blink rates
9).
Figure
allowed
change
of data
7).
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
STOP condition
mba607
P
PCA9552
mba608
SDA
SCL
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