参数资料
型号: PCA9575PW2,118
厂商: NXP Semiconductors
文件页数: 5/38页
文件大小: 0K
描述: IC I2C/SMBUS 16BIT GPIO 28TSSOP
产品培训模块: I²C Bus Fundamentals
特色产品: NXP - I2C Interface
标准包装: 1
接口: I²C,SM 总线
输入/输出数: 16
中断输出:
频率 - 时钟: 400kHz
电源电压: 1.1 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 标准包装
包括: POR
其它名称: 568-6647-6
PCA9575_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 9 November 2009
13 of 38
NXP Semiconductors
PCA9575
16-bit I2C-bus and SMBus, level translating, low voltage GPIO
7.6.6 Register 5 - Bus-hold/pull-up/pull-down enable 1 register
Bit 0 of this register allows the user to enable/disable the bus-hold feature for the I/O pins.
Setting the bit 0 to logic 1 enables bus-hold feature for the I/O bank 1. In this mode, the
pull-up/pull-downs will be disabled for I/O bank 1. Setting the bit 0 to logic 0 disables
bus-hold feature.
Bit 1 of this register allows the user to enable/disable pull-up/pull-downs on the I/O pins.
Setting the bit 1 to logic 1 enables selection of pull-up/pull-down using Register 7. Setting
the bit 1 to logic 0 disables pull-up/pull-downs on the I/O bank 1 pins and contents of
Register 7 will have no effect on the I/O.
Table 9.
Register 5 - Bus-hold/pull-up/pull-down enable 1 register (address 05h)
bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
E1.7
R/W
X
not used
6
E1.6
R/W
X
5
E1.5
R/W
X
4
E1.4
R/W
X
3
E1.3
R/W
X
2
E1.2
R/W
X
1
E1.1
R/W
0*
allows the user to enable/disable pull-up/pull-downs on the
I/O bank 1 pins
0 = disables pull-up/pull-downs on the I/O bank 1 pins and
contents of Register 7 will have no effect on the I/O bank 0
(default value)
1 = enables selection of pull-up/pull-down using Register 7
0
E1.0
R/W
0*
allows user to enable/disable the bus-hold feature for the
I/O bank 1 pins
0 = disables bus-hold feature (default value)
1 = enables bus-hold feature
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