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MCP23017-I/ML PDF预览

MCP23017-I/ML

更新时间: 2024-01-02 06:19:32
品牌 Logo 应用领域
美国微芯 - MICROCHIP /
页数 文件大小 规格书
48页 914K
描述
IC,I/O PORT,16-BIT,LLCC,28PIN,PLASTIC

MCP23017-I/ML 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Contact Manufacturer零件包装代码:SSOP
包装说明:SSOP-28针数:28
Reach Compliance Code:compliant风险等级:5.8
JESD-30 代码:R-PDSO-G28长度:10.2 mm
湿度敏感等级:1位数:16
I/O 线路数量:16端口数量:2
端子数量:28最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装等效代码:SSOP28,.3
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
峰值回流温度(摄氏度):225电源:2/5 V
认证状态:Not Qualified筛选级别:TS 16949
座面最大高度:2 mm子类别:Parallel IO Port
最大供电电压:5.5 V最小供电电压:1.8 V
标称供电电压:4.5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN (SN)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:5.3 mm
uPs/uCs/外围集成电路类型:PARALLEL IO PORT, GENERAL PURPOSEBase Number Matches:1

MCP23017-I/ML 数据手册

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MCP23017/MCP23S17  
1.3.1  
BYTE MODE AND SEQUENTIAL  
MODE  
1.2  
Power-on Reset (POR)  
The on-chip POR circuit holds the device in reset until  
VDD has reached a high enough voltage to deactivate  
the POR circuit (i.e., release the device from reset).  
The maximum VDD rise time is specified in Section 2.0  
“Electrical Characteristics”.  
The MCP23X17 family has the ability to operate in Byte  
mode or Sequential mode (IOCON.SEQOP).  
Byte Mode disables automatic Address Pointer  
incrementing. When operating in Byte mode, the  
MCP23X17 family does not increment its internal  
address counter after each byte during the data  
transfer. This gives the ability to continually access the  
same address by providing extra clocks (without  
additional control bytes). This is useful for polling the  
GPIO register for data changes or for continually  
writing to the output latches.  
When the device exits the POR condition (releases  
reset), device operating parameters (i.e., voltage,  
temperature, serial bus frequency, etc.) must be met to  
ensure proper operation.  
1.3  
Serial Interface  
This block handles the functionality of the I2C  
(MCP23017) or SPI (MCP23S17) interface protocol.  
The MCP23X17 contains 22 individual registers (11  
register pairs) that can be addressed through the Serial  
Interface block, as shown in Table 1-2.  
A special mode (Byte mode with IOCON.BANK = 0)  
causes the address pointer to toggle between  
associated A/B register pairs. For example, if the BANK  
bit is cleared and the Address Pointer is initially set to  
address 12h (GPIOA) or 13h (GPIOB), the pointer will  
toggle between GPIOA and GPIOB. Note that the  
Address Pointer can initially point to either address in  
the register pair.  
TABLE 1-2:  
Address  
IOCON.BANK = 1 IOCON.BANK = 0  
REGISTER ADDRESSES  
Address  
Access to:  
Sequential mode enables automatic address pointer  
incrementing. When operating in Sequential mode, the  
MCP23X17 family increments its address counter after  
each byte during the data transfer. The Address Pointer  
automatically rolls over to address 00h after accessing  
the last register.  
00h  
10h  
01h  
11h  
02h  
12h  
03h  
13h  
04h  
14h  
05h  
15h  
06h  
16h  
07h  
17h  
08h  
18h  
09h  
19h  
0Ah  
1Ah  
00h  
01h  
02h  
03h  
04h  
05h  
06h  
07h  
08h  
09h  
0Ah  
0Bh  
0Ch  
0Dh  
0Eh  
0Fh  
10h  
11h  
12h  
13h  
14h  
15h  
IODIRA  
IODIRB  
IPOLA  
IPOLB  
GPINTENA  
GPINTENB  
DEFVALA  
DEFVALB  
INTCONA  
INTCONB  
IOCON  
These two modes are not to be confused with single  
writes/reads and continuous writes/reads that are  
serial protocol sequences. For example, the device  
may be configured for Byte mode and the master may  
perform  
a continuous read. In this case, the  
MCP23X17 would not increment the Address Pointer  
and would repeatedly drive data from the same  
location.  
IOCON  
2
1.3.2  
I C INTERFACE  
GPPUA  
GPPUB  
INTFA  
2
1.3.2.1  
I C Write Operation  
The I2C write operation includes the control byte and  
register address sequence, as shown in the bottom of  
Figure 1-1. This sequence is followed by eight bits of  
data from the master and an Acknowledge (ACK) from  
the MCP23017. The operation is ended with a Stop (P)  
or Restart (SR) condition being generated by the  
master.  
INTFB  
INTCAPA  
INTCAPB  
GPIOA  
GPIOB  
OLATA  
Data is written to the MCP23017 after every byte  
transfer. If a Stop or Restart condition is generated  
during a data transfer, the data will not be written to the  
MCP23017.  
OLATB  
Both “byte writes” and “sequential writes” are  
supported by the MCP23017. If Sequential mode is  
enabled (IOCON, SEQOP  
=
0) (default), the  
MCP23017 increments its address counter after each  
ACK during the data transfer.  
© 2007 Microchip Technology Inc.  
DS21952B-page 5  

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