PCA9561D-T NXP Semiconductors, PCA9561D-T Datasheet - Page 5

• Manufacturer Part Number: PCA9561D-T
• Description: EEPROM QUAD 6-BT MULTIPLEX I2C EEPROM
• Manufacturer: NXP Semiconductors

Specifications of PCA9561D-T

• Product Category: EEPROM
• Rohs: yes
• Mounting Style: SMD/SMT
• Package / Case: SOT-163
• Factory Pack Quantity: 2000
• Part # Aliases: PCA9561D,118

NXP Semiconductors
6. Functional description
Table 4.
PCA9561
Product data sheet
D7
0
0
0
0
1
D6
0
0
0
0
1
Address register
D5
6.2.1 Control register definition
0
0
0
0
1
6.1 Device address
6.2 Control register
D4
0
0
0
0
1
Refer to
Following a START condition the bus master must output the address of the slave it is
accessing. The address of the PCA9561 is shown in
internal pull-up resistors are incorporated on the hardware selectable address pins and
they must be pulled HIGH or LOW.
The last bit of the slave 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 PCA9561, which will be stored in the Control register. This register can be
written and read via the I
Following the address and acknowledge bit with logic 0 in the read/write bit, the first byte
written is the command byte. If the command byte is reserved and therefore not valid, it
will not be acknowledged. Only valid command bytes will be acknowledged.
Fig 3.
Fig 4.
D3
0
0
0
0
1
Figure 1 “Block diagram of
Slave address
Control register
D2
0
0
0
0
1
All information provided in this document is subject to legal disclaimers.
D1
0
0
1
1
1
Rev. 4 — 6 November 2012
D0
0
1
0
1
1
2
C-bus.
Register name
EEPROM_0
EEPROM_1
EEPROM_2
EEPROM_3
MUX_IN
MSB
D7
1
Quad 6-bit multiplexed I
D6
0
PCA9561”.
fixed
D5
0
D4
1
D3
1
Type
read/write
read/write
read/write
read/write
read
selectable
hardware
D2
A1
Figure
D1
A0
002aah287
002aah288
R/W
LSB
D0
2
3. To conserve power, no
C-bus EEPROM DIP switch
Register function
EEPROM byte 0 register
EEPROM byte 1 register
EEPROM byte 2 register
EEPROM byte 3 register
MUX_IN values register
PCA9561
© NXP B.V. 2012. All rights reserved.
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