PCA9530D-T NXP Semiconductors, PCA9530D-T Datasheet - Page 4

• Manufacturer Part Number: PCA9530D-T
• Description: LED Drivers 2-BIT I2C FM OD LED DIM RST
• Manufacturer: NXP Semiconductors

Specifications of PCA9530D-T

• Number Of Segments: 2
• 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: SO
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9530D,118

NXP Semiconductors
PCA9530_3
Product data sheet
6.2.1 Control register definition
6.2 Control register
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 PCA9530, 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 Auto-Increment flag is set (AI = 1) and a read sequence is initiated, the sequence
must start by reading a register different from the Input register (B2 B1 B0
Only the 3 least significant bits are affected by the AI flag. Unused bits must be
programmed with zeroes.
Table 3.
B2
0
0
0
0
1
1
Fig 5.
B1
0
0
1
1
0
0
Reset state: 00h
Control register
Register summary
B0
0
1
0
1
0
1
Symbol
INPUT
PSC0
PWM0
PSC1
PWM1
LS0
Rev. 03 — 26 February 2009
Auto-Increment flag
0
Access
read only
read/write
read/write
read/write
read/write
read/write
0
0
AI
0
register address
Description
input register
frequency prescaler 0
PWM register 0
frequency prescaler 1
PWM register 1
LED selector
B2
B1
002aae500
B0
2-bit I
2
C-bus LED dimmer
PCA9530
© NXP B.V. 2009. All rights reserved.
0 0 0).
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