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參數(shù)資料
| 型號： | MAX7300ANI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 其它接口 |
| 英文描述： | 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O Expander |
| 中文描述： | SPECIALTY INTERFACE CIRCUIT, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 348K |
| 代理商： | MAX7300ANI |
M
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
28-Port I/O Expander
8
_______________________________________________________________________________________
MAX7300 is the recipient. When the MAX7300 is trans-
mitting to the master, the master generates the
acknowledge bit since the master is the recipient.
Slave Address
The MAX7300 has a 7-bit-long slave address (Figure 6).
The eighth bit following the 7-bit slave address is the
R/
W
bit. It is low for a write command and high for a
read command.
The first 3 bits (MSBs) of the MAX7300 slave address
are always 100. Slave address bits A3, A2, A1, and A0
are selected by the address inputs, AD1 and AD0.
These two input pins can be connected to GND, V+,
SDA, or SCL. The MAX7300 has 16 possible slave
addresses (Table 3), and therefore a maximum of 16
MAX7300 devices can share the same interface.
Message Format for Writing
the MAX7300
A write to the MAX7300 comprises the transmission of
the MAX7300
’
s slave address with the R/
W
bit set to
zero, followed by at least 1 byte of information. The first
byte of information is the command byte. The com-
mand byte determines which register of the MAX7300
is to be written by the next byte, if received. If a STOP
condition is detected after the command byte is
received, then the MAX7300 takes no further action
(Figure 7) beyond storing the command byte.
SLAVE ADDRESS BYTE
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
R/W
8
8
CE
DATA
8
SDA
SCL
PORT REGISTERS
GPIO
CONFIGURATION
P4 TO P31
ADDRESS
MATCHER
AD0
AD1
COMMAND BYTE
DATA BYTE
R/W
7-BIT DEVICE ADDRESS
7
7
TO COMMAND REGISTERS
TO/FROM DATA REGISTERS
GPIO DATA
R/W
CONFIGURATION
REGISTERS
PORT CHANGE
DETECTOR
MASK REGISTER
COMMAND
REGISTER DECODE
8
DATA BYTE
COMMAND BYTE
Figure 1. MAX7300 Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7300ANI+ | 功能描述:接口-I/O擴(kuò)展器 Integrated Circuits (ICs) RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7300ATI | 功能描述:接口-I/O擴(kuò)展器 RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7300ATI+ | 功能描述:接口-I/O擴(kuò)展器 2Wire 2.5-5.5V 20/28Port I/Ox RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| MAX7300ATI+T | 制造商:Maxim Integrated Products 功能描述:MAX7300ATI+T |
| MAX7300ATI-T | 功能描述:接口-I/O擴(kuò)展器 RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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