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MAX7312AWG

更新时间： 2024-01-31 03:11:11

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
17页	373K
描述
2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection

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技术参数
数据手册

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MAX7312AWG 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	Factory Lead Time：	6 weeks
风险等级：	5.72	峰值回流温度（摄氏度）：	NOT SPECIFIED
处于峰值回流温度下的最长时间：	NOT SPECIFIED	uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches：	1

MAX7312AWG 数据手册

2-Wire-Interfaced 16-Bit I/O Port Expander

with Interrupt and Hot-Insertion Protection

Table 2. Registers 0x00, 0x01—Input Port Registers

BIT

I15

I14

I13

I12

I11

I10

I±

Table 3. Registers 0x02, 0x03—Output Port Registers

O15

O14

O13

O12

O11

O10

BIT

Power-up default

Table 4. Registers 0x04, 0x05—Polarity Inversion Registers

I/O7

I/O15

I/O6

I/O14

I/O5

I/O13

I/O4

I/O12

I/O3

I/O11

I/O2

I/O10

I/O1

I/O9

I/O0

I/O8

BIT

Power-up default

Table 5. Registers 0x06, 0x07—Configuration Registers

I/O7

I/O15

I/O6

I/O14

I/O5

I/O13

I/O4

I/O12

I/O3

I/O11

I/O2

I/O10

I/O1

I/O9

I/O0

I/O8

BIT

Power-up default

Bus Timeout

Table 6. Register 0x08—Timeout Register

Set register 0x0± 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.

BIT

Power-up default

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.

Standby

The MAX7312 goes into standby when the I²C bus is

idle. Standby supply current is typically 2.9µA.

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.

Applications Information

Hot Insertion

The I/O ports I/O0–I/O15 interrupt output IRQ, and seri-

al 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.

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.

Power-Supply Consideration

The MAX7312 operates from a supply voltage of 2V to

5.5V. Bypass the power supply to GND with a 0.047µF

capacitor as close to the device as possible.

______________________________________________________________________________________ 11

1...8 9 101112 13 14...17

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与MAX7312AWG相关器件

型号	品牌	描述	获取价格	数据表
MAX7312AWG+T	MAXIM	2-Wire-Interfaced 16-Bit I/O Port Expander with Interrupt and Hot-Insertion Protection	获取价格
MAX7313	MAXIM	16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection	获取价格
MAX7313	ADI	16端口输入/输出扩展器，带有LED亮度控制和中断，提供热插入保护	获取价格
MAX7313_11	MAXIM	16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection	获取价格
MAX7313AEG	MAXIM	16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection	获取价格
MAX7313AEG+	MAXIM	Parallel I/O Port, 1-Bit, 16 I/O, BICMOS, PDSO24, 0.150 INCH, 0.025 INCH PITCH, MO-137AE,	获取价格

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