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参数资料
| 型号： | MAX7312AAG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 16B 24SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 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-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
| 包括： | POR |
Output Port Registers
The output port registers (Table 3) set the outgoing
logic levels of the I/Os defined as outputs by the
respective configuration register. Reads from the out-
put port registers reflect the value that is in the flip-flop
controlling the output selection, not the actual I/O value.
Polarity Inversion Registers
The polarity inversion registers (Table 4) enable polarity
inversion of pins defined as inputs by the respective
port configuration registers. Set the bit in the polarity
inversion register to invert the corresponding port pin’s
polarity. Clear the bit in the polarity inversion register to
retain the corresponding port pin’s original polarity.
Configuration Registers
The configuration registers (Table 5) configure the
directions of the I/O pins. Set the bit in the respective
configuration register to enable the corresponding port
as an input. Clear the bit in the configuration register to
enable the corresponding port as an output.
Bus Timeout
Set register 0x08 LSB (bit 0) to enable the bus timeout
function (Table 6) or clear it to disable the bus timeout
function. Enabling the timeout feature resets the
MAX7312 serial bus interface when SCL stops either high
or low during a read or write. If either SCL or SDA is low
for more than 29ms after the start of a valid serial transfer,
the interface resets itself and sets up SDA as an input.
The MAX7312 then waits for another START condition.
Standby
The MAX7312 goes into standby when the I2C bus is
idle. Standby supply current is typically 2.9A.
Applications Information
Hot Insertion
The I/O ports I/O0–I/O15 interrupt output INT, and serial
interfaces SDA, SCL, AD0-2 remain high impedance
with up to 6V asserted on them when the MAX7312 is
powered down (V+ = 0V). The MAX7312 can therefore
be used in hot-swap applications.
Power-Supply Consideration
The MAX7312 operates from a supply voltage of 2V to
5.5V. Bypass the power supply to GND with a 0.047F
capacitor as close to the device as possible. For the QFN
version, connect the underside exposed pad to GND.
MAX7312
2-Wire-Interfaced 16-Bit I/O Port Expander
with Interrupt and Hot-Insertion Protection
______________________________________________________________________________________
11
I7
I6
I5
I4
I3
I2
I1
I0
BIT
I15
I14
I13
I12
I11
I10
I9
I8
Table 2. Registers 0x00, 0x01—Input Port Registers
O7
O6
O5
O4
O3
O2
O1
O0
BIT
O15
O14
O13
O12
O11
O10
O9
O8
Power-up default
1
11111
11
Table 3. Registers 0x02, 0x03—Output Port Registers
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
BIT
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
Power-up default
0
00000
00
Table 4. Registers 0x04, 0x05—Polarity Inversion Registers
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
BIT
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
Power-up default
1
Table 5. Registers 0x06, 0x07—Configuration Registers
BIT
7654321
0
Power-up default
0000000
1
Table 6. Register 0x08—Timeout Register
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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+ | 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 |
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