MAX7316AEE

更新时间： 2024-02-22 04:06:27

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
26页	389K
描述
10-Port I/O Expander with LED Intensity Control and Interrupt

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MAX7316AEE 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	3 X 3 MM, 0.80 MM PITCH, MO-220, TQFN-16	针数：	16
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.85
JESD-30 代码：	R-XQCC-N16	JESD-609代码：	e0
长度：	4.89 mm	湿度敏感等级：	1
I/O 线路数量：	8	端口数量：	1
端子数量：	16	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	QCCN	封装形状：	RECTANGULAR
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	245
认证状态：	Not Qualified	座面最大高度：	1.73 mm
最大供电电压：	3.6 V	最小供电电压：	2 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	BICMOS	温度等级：	AUTOMOTIVE
端子面层：	TIN LEAD	端子形式：	NO LEAD
端子节距：	0.635 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3.9 mm
uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE	Base Number Matches：	1

MAX7316AEE 数据手册

10-Port I/O Expander with LED Intensity

Control and Interrupt

Port Inputs and Transition Detection

The input ports register reflects the incoming logic lev-

els of the port pins, regardless of whether the pin is

defined as an input or an output. Reading the input

ports register latches the current-input logic level of the

affected eight ports. Transition detection allows all

ports configured as inputs to be monitored for changes

in their logic status. The action of reading the input

ports register samples the corresponding 8 port bits’

input condition. This sample is continuously compared

with the actual input conditions. A detected change in

input condition causes the INT/O8 interrupt output to go

low, if configured as an interrupt output. The interrupt is

cleared either automatically if the changed input

returns to its original state, or when the input ports reg-

ister is read.

PWM Intensity Control

The MAX7316 includes an internal oscillator, nominally

32kHz, to generate PWM timing for LED intensity control.

PWM intensity control can be enabled on an output-by-

output basis, allowing the MAX7316 to provide any mix

of PWM LED drives and glitch-free logic outputs (Table

10). PWM can be disabled entirely, in which case all out-

put ports are static and the MAX7316 operating current

is lowest because the internal oscillator is turned off.

PWM intensity control uses a 4-bit master control and 4

bits of individual control per output (Tables 13, 14). The

4-bit master control provides 16 levels of overall intensi-

ty control, which applies to all PWM-enabled output

ports. The master control sets the maximum pulse

width from 1/15 to 15/15 of the PWM time period. The

individual settings comprise a 4-bit number further

reducing the duty cycle to be from 1/16 to 15/16 of the

time window set by the master control.

The INT/O8 pin can be configured as either an interrupt

output or as a 9th output port with the same static or

blink controls as the other eight ports (Table 4).

For applications requiring the same PWM setting for all

output ports, a single global PWM control can be used

instead of all the individual controls to simplify the con-

trol software and provide 240 steps of intensity control

(Tables 10 and 13).

Port Output Control and LED Blinking

The blink phase 0 register sets the output logic levels of

the eight ports P0–P7 (Table 8). This register controls

the port outputs if the blink function is disabled. A

duplicate register, the blink phase 1 register, is also

used if the blink function is enabled (Table 9). In blink

mode, the port outputs can be flipped between using

the blink phase 0 register and the blink phase 1 regis-

ter using hardware control (the BLINK input) and/or

software control (the blink flip flag in the configuration

Standby Mode

When the serial interface is idle and the PWM intensity

control is unused, the MAX7316 automatically enters

standby mode. If the PWM intensity control is used, the

operating current is slightly higher because the internal

PWM oscillator is running. When the serial interface is

active, the operating current also increases because

the MAX7316, like all I²C slaves, has to monitor every

transmission.

The logic level of the BLINK input can be read back

through the blink status bit in the configuration register

(Table 4). The BLINK input, therefore, can be used as a

general-purpose logic input (GPI port) if the blink func-

tion is not required.

SDA

BUF

SU,STA

SU,DAT

HD,STA

LOW

SU,STO

HD,DAT

SCL

HIGH

HD,STA

START CONDITION

REPEATED START CONDITION

STOP

CONDITION

START

CONDITION

Figure 2. 2-Wire Serial Interface Timing Details

_______________________________________________________________________________________

1...4 5 678 9 10...26

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与MAX7316AEE相关器件

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MAX7316AEE+	MAXIM	暂无描述	获取价格
MAX7316ATE	MAXIM	10-Port I/O Expander with LED Intensity Control and Interrupt	获取价格
MAX7316ATE+	MAXIM	Parallel I/O Port, 8 I/O, BICMOS, 3 X 3 MM, 0.80 MM PITCH, MO-220, TQFN-16	获取价格
MAX7316ATE-T	MAXIM	Parallel I/O Port, 8 I/O, BICMOS, 3 X 3 MM, 0.80 MM PITCH, MO-220, TQFN-16	获取价格
MAX7317	MAXIM	10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection	获取价格
MAX7317	ADI	10端口、SPI接口输入/输出扩展器，带有过压和热插入保护	获取价格

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