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参数资料
| 型号： | MAX7324AEG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 24QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接口： | I²C |
| 输入/输出数： | 8 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 1.71 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-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 带卷 (TR) |
| 包括： | POR |
MAX7324
I2C Port Expander with Eight Push-Pull Outputs
and Eight Inputs
12
______________________________________________________________________________________
If a port input data change occurs during the read
sequence, INT is reasserted during the I2C STOP bit.
The MAX7324 does not generate another interrupt dur-
ing a single-byte or multibyte read.
Input-port data is sampled during the preceding I2C
acknowledge bit (the acknowledge bit for the I2C slave
address in the case of a single-byte or 2-byte read).
A multibyte read (more than 2 bytes before the I2C
STOP bit) from the output ports of the MAX7324 repeat-
edly returns the status of the eight output ports, read
back as inputs.
A
single-byte write to the input ports of the MAX7324
sets the interrupt mask register and clears both the
internal transition flags and INT output.
A single-byte write to the output ports of the MAX7324
sets the logic state of all eight ports.
A
multibyte write to the input ports of the MAX7324
sets the interrupt mask register repeatedly.
A multibyte write to the output ports of the MAX7324
repeatedly sets the logic state of all eight ports.
Reading from the MAX7324
A read from the input ports of the MAX7324 starts with
the master transmitting the input ports’ slave address
with the R/W bit set to high. The MAX7324 acknowl-
edges the slave address and samples the ports during
the acknowledge bit. INT deasserts during the slave
address acknowledge.
Typically, the master reads 1 or 2 bytes from the
MAX7324 with each byte being acknowledged by the
master upon reception with the exception of the last
byte.
When the master reads one byte from the open-drain
ports of the MAX7324 and subsequently issues a STOP
condition (Figure 6), the MAX7324 transmits the current
port data, clears the transition flags, and resets the
transition detection. INT deasserts during the slave
acknowledge. The new snapshot data is the current
port data transmitted to the master, and therefore, port
changes occuring during the transmission are detect-
ed. INT remains high until the STOP condition.
SCL
MAX7324 SLAVE ADDRESS
SA
P
1
PORTS
ACKNOWLEDGE
FROM MAX7324
ACKNOWLEDGE
FROM MASTER
PORT SNAPSHOT
tIV
tPH
tIR
A
I0
I1
I2
I3
I4
I5
I6
I7
D0
D1
D2
D3
D4
D5
D6
D7
PORT SNAPSHOT
tPS
tIP
INT OUTPUT
R/W
S = START CONDITION
A = ACKNOWLEDGE
P = STOP CONDITION
INT REMAINS HIGH UNTIL STOP CONDITION
Figure 6. Reading Input Ports of the MAX7324 (1 Data Byte)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7324ATG | 功能描述:接口-I/O扩展器 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 |
| MAX7324ATG+ | 功能描述:接口-I/O扩展器 I2C Port Expander w/8 P-P Out & 8 In 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 |
| MAX7324ATG+T | 功能描述:接口-I/O扩展器 I2C Port Expander w/8 P-P Out & 8 In 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 |
| MAX7324ATG-T | 功能描述:接口-I/O扩展器 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 |
| MAX7324EVCMAXQU+ | 功能描述:界面开发工具 Maxim Evaluation System RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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