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参数资料
| 型号： | MAX7312ATG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/16页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 管件 |
| 包括： | POR |
| 产品目录页面： | 1424 (CN2011-ZH PDF) |
MAX7312
MAX7312 generates the acknowledge bit since the
MAX7312 is the recipient. When the MAX7312 is trans-
mitting to the master, the master generates the
acknowledge bit.
Slave Address
The MAX7312 has a 7-bit-long slave address (Figure 6).
The 8th bit following the 7-bit slave address is the R/W
bit. Set this bit low for a write command and high for a
read command.
Slave address pins AD2, AD1, and AD0 choose 1 of 64
slave ID addresses (Table 7).
Data Bus Transaction
The command byte is the first byte to follow the 8-bit
device slave address during a write transmission
(Table 1, Figure 7). The command byte is used to deter-
mine which of the following registers are written or read.
Writing to Port Registers
Transmit data to the MAX7312 by sending the device
slave address and setting the LSB to a logic zero. The
command byte is sent after the address and deter-
mines which registers receive the data following the
command byte (Figure 7).
2-Wire-Interfaced 16-Bit I/O Port Expander
with Interrupt and Hot-Insertion Protection
8
_______________________________________________________________________________________
SDA
A6
A5
A4
A3
A2
A1
A0
MSB
LSB
ACK
R/W
PROGRAMMABLE
Figure 6. Slave Address
COMMAND BYTE
ADDRESS (HEX)
FUNCTION
PROTOCOL
POWER-UP
DEFAULT
0x00
Input port 1
Read byte
XXXX XXXX
0x01
Input port 2
Read byte
XXXX XXXX
0x02
Output port 1
Read/write byte
1111 1111
0x03
Output port 2
Read/write byte
1111 1111
0x04
Port 1 polarity inversion
Read/write byte
0000 0000
0x05
Port 2 polarity inversion
Read/write byte
0000 0000
0x06
Port 1 configuration
Read/write byte
1111 1111
0x07
Port 2 configuration
Read/write byte
1111 1111
0x08
Timeout register
Read/write byte
0000 0001
0xFF
Factory reserved. (Do not write to this register.)
—
Table 1. Command Byte Register
12
34
5
6
7
8
9
SCL
SDA
S
A
0000001
76543210
A
76543210
A
0A
SLAVE ADDRESS
COMMAND BYTE
PORT 1 DATA
PORT 2 DATA
R/W
ACKNOWLEDGE
FROM SLAVE
ACKNOWLEDGE
FROM SLAVE
START
CONDITION
ACKNOWLEDGE
FROM SLAVE
ACKNOWLEDGE
FROM SLAVE
tPV
WRITE TO PORT
DATA OUT PORT 1
READ FROM PORT 2
Figure 7. Writes to Output Registers Through Write Byte Protocol
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7312ATG+ | 功能描述:接口-I/O扩展器 16-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7312ATG+T | 功能描述:接口-I/O扩展器 16-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7312ATG-T | 功能描述:接口-I/O扩展器 16-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7312AUG | 功能描述:接口-I/O扩展器 16-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MAX7312AUG+ | 功能描述:接口-I/O扩展器 16-Bit I/O Port Expander RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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