PCA9553D/01 NXP Semiconductors, PCA9553D/01 Datasheet - Page 5

• Manufacturer Part Number: PCA9553D/01
• Description: LED Drivers LED DRVR 4BIT I2C
• Manufacturer: NXP Semiconductors

Specifications of PCA9553D/01

• Number Of Segments: 4
• Low Level Output Current: 25000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 500 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-96
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9553D/01,112

NXP Semiconductors
7. Functional description
PCA9553_6
Product data sheet
7.1 Device address
7.2 Control register
Refer to
Following a START condition the bus master must output the address of the slave it is
accessing. The address of the PCA9553/01 is shown in
Figure
PCA9553TK uses the version /01 address.
The last bit of the address byte defines the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
Following the successful acknowledgement of the slave address, the bus master will send
a byte to the PCA9553 which will be stored in the Control register.
The lowest 3 bits are used as a pointer to determine which register will be accessed.
If the Auto-Increment flag is set, the three low order bits of the Control register are
automatically incremented after a read or write. This allows the user to program the
registers sequentially. The contents of these bits will rollover to ‘000’ after the last register
is accessed.
When the Auto-Increment flag is set (AI = 1) and a read sequence is initiated, the
sequence must start by reading a register different from ‘0’ (B2 B1 B0
Only the 3 least significant bits are affected by the AI flag.
Unused bits must be programmed with zeroes.
Fig 5.
Fig 7.
6.
1
Figure 1 “Block
PCA9553/01 slave address
Reset state: 00h
Control register
1
slave address
0
0
Rev. 06 — 29 December 2008
0
diagram”.
1
4-bit I
002aad742
0
0
Auto-Increment
R/W
0
2
C-bus LED driver with programmable blink rates
0
flag
AI
Fig 6.
0
register address
B2
002aad744
1
B1
PCA9553/02 slave address
Figure 5
1
B0
slave address
0
0
and PCA9553/02 in
0
PCA9553
© NXP B.V. 2008. All rights reserved.
0 0 0).
1
002aad743
1
R/W
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