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PCA9538BS PDF预览

PCA9538BS

更新时间: 2024-02-16 08:00:13
品牌 Logo 应用领域
恩智浦 - NXP 并行IO端口微控制器和处理器外围集成电路
页数 文件大小 规格书
18页 201K
描述
8-bit I2C and SMBus low power I/O port with interrupt and reset

PCA9538BS 技术参数

生命周期:Obsolete零件包装代码:QFN
包装说明:HVQCCN, LCC16,.16SQ,25针数:16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.73
JESD-30 代码:R-XQCC-N16长度:4 mm
位数:8I/O 线路数量:8
端口数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装等效代码:LCC16,.16SQ,25封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE电源:2.5/5 V
认证状态:Not Qualified座面最大高度:1 mm
子类别:Parallel IO Port最大供电电压:5.5 V
最小供电电压:2.3 V标称供电电压:2.5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子形式:NO LEAD
端子节距:0.65 mm端子位置:QUAD
宽度:4 mmuPs/uCs/外围集成电路类型:PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches:1

PCA9538BS 数据手册

 浏览型号PCA9538BS的Datasheet PDF文件第5页浏览型号PCA9538BS的Datasheet PDF文件第6页浏览型号PCA9538BS的Datasheet PDF文件第7页浏览型号PCA9538BS的Datasheet PDF文件第9页浏览型号PCA9538BS的Datasheet PDF文件第10页浏览型号PCA9538BS的Datasheet PDF文件第11页 
Philips Semiconductors  
Product data sheet  
8-bit I2C and SMBus low power I/O port  
with interrupt and reset  
PCA9538  
TYPICAL APPLICATION  
V
DD  
(5 V)  
2 k  
100 kΩ  
(×3)  
V
10 kΩ  
10 kΩ  
10 kΩ  
10 kΩ  
DD  
V
DD  
SUBSYSTEM 1  
(e.g. temp sensor)  
SCL  
SDA  
SCL  
I/O  
I/O  
0
SDA  
INT  
MASTER  
CONTROLLER  
INT  
1
INT  
I/O  
I/O  
2
IRESET  
IRESET  
RESET  
GND  
3
SUBSYSTEM 2  
(e.g. counter)  
I/O  
4
PCA9538  
I/O  
5
I/O  
6
I/O  
7
A
Controlled Switch  
(e.g. CBT device)  
ENABLE  
A1  
A0  
B
V
SS  
ALARM  
SUBSYSTEM 3  
(e.g. alarm  
system)  
NOTE: Device address configured as 1110000 for this example  
I/O , I/O , I/O , configured as outputs  
0
2
3
I/O , I/O , I/O , configured as inputs  
1
4
5
V
I/O , I/O , are not used and need 100 kpull-up resistors to protect them from floating.  
DD  
06  
7
SW02180  
Figure 10. Typical application  
Minimizing I when the I/O is used to control LEDs  
DD  
When the I/Os are used to control LEDs, they are normally connected to V through a resistor as shown in Figure 10. Since the LED acts as a  
DD  
diode, when the LED is off the I/O V is about 1.2 V less than V . The supply current , I , increases as V becomes lower than V and is  
IN  
DD  
DD  
IN  
DD  
specified as I in the DC characteristics table.  
DD  
Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or  
equal to V when the LED is off. Figure 11 shows a high value resistor in parallel with the LED. Figure 12 shows V less than the LED supply  
DD  
DD  
voltage by at least 1.2 V. Both of these methods maintain the I/O V at or above V and prevents additional supply current consumption when  
IN  
DD  
the LED is off.  
3.3 V  
5 V  
V
DD  
LED  
100 kΩ  
V
LED  
DD  
V
DD  
LEDx  
LEDx  
SW02086  
SW02087  
Figure 11. High value resistor in parallel with the LED  
Figure 12. Device supplied by a lower voltage  
8
2004 Oct 05  

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