参数资料
型号: PCA9534BS3,118
厂商: NXP Semiconductors
文件页数: 20/25页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16HVQFN
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C,SM 总线
输入/输出数: 8
中断输出:
频率 - 时钟: 400kHz
电源电压: 2.3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-VFQFN 裸露焊盘
供应商设备封装: 16-HVQFN
包装: 标准包装
包括: POR
其它名称: 568-8706-6
PCA9534_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 6 November 2006
4 of 25
NXP Semiconductors
PCA9534
8-bit I2C-bus and SMBus low power I/O port with interrupt
[1]
HVQFN package die supply ground is connected to both VSS pin and exposed center pad. VSS pin must be
connected to supply ground for proper device operation. For enhanced thermal, electrical, and board level
performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad on the
board and for proper heat conduction through the board, thermal vias need to be incorporated in the PCB in
the thermal pad region.
6.
Functional description
6.1 Registers
6.1.1 Command byte
The command byte is the rst byte to follow the address byte during a write transmission.
It is used as a pointer to determine which of the following registers will be written or read.
6.1.2 Register 0 - Input Port register
This register is a read-only port. It reects the incoming logic levels of the pins, regardless
of whether the pin is dened as an input or an output by Register 3. Writes to this register
have no effect.
The default ‘X’ is determined by the externally applied logic level.
IO6
11
9
input/output 6
IO7
12
10
input/output 7
INT
13
11
interrupt output (open-drain)
SCL
14
12
serial clock line
SDA
15
13
serial data line
VDD
16
14
supply voltage
Table 2.
Pin description …continued
Symbol
Pin
Description
SO16, TSSOP16
HVQFN16
Table 3.
Command byte
Command
Protocol
Function
0
read byte
Input Port register
1
read/write byte
Output Port register
2
read/write byte
Polarity Inversion register
3
read/write byte
Conguration register
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