PCA9539APW,118 NXP Semiconductors, PCA9539APW,118 Datasheet - Page 6

• Manufacturer Part Number: PCA9539APW,118
• Description: Interface - I/O Expanders 16bit I2C IO Port
• Manufacturer: NXP Semiconductors

Specifications of PCA9539APW,118

• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-24
• Operating Current: 160 mA
• Output Current: 25 mA
• Power Dissipation: 200 mW
• Product Type: I/O Expanders

NXP Semiconductors
Table 4.
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PCA9539A
Product data sheet
B7
0
0
0
0
0
0
0
0
Undefined.
B6
0
0
0
0
0
0
0
0
Command byte
Pointer register bits
B5
0
0
0
0
0
0
0
0
6.2.1 Pointer register and command byte
6.2.2 Input port register pair (00h, 01h)
6.2 Registers
B4
0
0
0
0
0
0
0
0
B3
Following the successful acknowledgement of the address byte, the bus master sends a
command byte, which is stored in the Pointer register in the PCA9539A. The lower
four bits of this data byte state the operation (read or write) and the internal registers
(Input, Output, Polarity Inversion, or Configuration) that will be affected. This register is
write only.
The Input port registers (registers 0 and 1) reflect the incoming logic levels of the pins,
regardless of whether the pin is defined as an input or an output by the Configuration
register. The Input port registers are read only; writes to these registers have no effect.
The default value ‘X’ is determined by the externally applied logic level. An Input port
register read operation is performed as described in
registers”.
Table 5.
Table 6.
0
0
0
0
0
0
0
0
Bit
Symbol
Default
Bit
Symbol
Default
Fig 5.
B2
0
0
0
0
1
1
1
1
Pointer register bits
B1
0
0
1
1
0
0
1
1
Input port 0 register (address 00h)
Input port 1 register (address 01h)
I0.7
I1.7
X
X
7
7
B0
All information provided in this document is subject to legal disclaimers.
0
1
0
1
0
1
0
1
Command byte
(hexadecimal)
Rev. 1 — 26 September 2012
I0.6
I1.6
X
X
6
6
00h
01h
02h
03h
04h
05h
06h
07h
Low voltage 16-bit I
B7
I0.5
I1.5
X
X
B6
5
5
Configuration port 0
Configuration port 1
Register
Input port 0
Input port 1
Output port 0
Output port 1
Polarity Inversion port 0
Polarity Inversion port 1
B5
B4
I0.4
I1.4
X
X
4
4
B3
2
C-bus I/O port with interrupt and reset
B2
Section 7.2 “Reading the port
I0.3
I1.3
B1
X
X
002aaf540
3
3
B0
read/write byte
read/write byte
read/write byte
read/write byte
Protocol
read byte
read byte
read/write byte
read/write byte
I0.2
I1.2
X
X
2
2
PCA9539A
© NXP B.V. 2012. All rights reserved.
I0.1
I1.1
X
X
1
1
0000 0000
0000 0000
1111 1111
1111 1111
Power-up
default
xxxx xxxx
xxxx xxxx
1111 1111
1111 1111
I0.0
I1.0
X
X
0
0
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