Datasheet > MAX7314AEG+

MAX7314AEG+

更新时间： 2024-01-21 02:25:09

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理光电二极管外围集成电路
页数	文件大小	规格书
25页	319K
描述
Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, PDSO24, 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-24

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

MAX7314AEG+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SSOP
包装说明：	SSOP, SSOP24,.24	针数：	24
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.71	JESD-30 代码：	R-PDSO-G24
JESD-609代码：	e3	长度：	8.65 mm
湿度敏感等级：	1	位数：	8
I/O 线路数量：	16	端口数量：	1
端子数量：	24	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SSOP24,.24
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	2.5/3.3 V
认证状态：	Not Qualified	座面最大高度：	1.73 mm
子类别：	Parallel IO Port	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：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	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

MAX7314AEG+ 数据手册

18-Port GPIO with LED Intensity Control,

Interrupt, and Hot-Insertion Protection

Port Inputs and Transition Detection

Input ports registers reflect the incoming logic levels of

the port pins, regardless of whether the pin is defined

as an input or an output. Reading an input ports regis-

ter latches the current-input logic level of the affected

eight ports. Transition detection allows all ports config-

ured as inputs to be monitored for changes in their

logic status. The action of reading an input ports regis-

ter samples the corresponding 8 port bits’ input condi-

tion. This sample is continuously compared with the

actual input conditions. A detected change in input

condition causes the INT/O16 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 appropriate

input ports register is read.

PWM Intensity Control

The MAX7314 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 MAX7314 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 MAX7314 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/O16 pin can be configured as either an inter-

rupt output or as a 17th output port with the same static

or blink controls as the other 16 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 two blink phase 0 registers set the output logic lev-

els of the 16 ports P0–P15 (Table 8). These registers

control the port outputs if the blink function is disabled.

A duplicate pair of registers, the blink phase 1 registers,

are 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 registers and the blink phase 1

registers using hardware control (the BLINK input)

and/or software control (the blink flip flag in the configu-

ration register) (Table 4). 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 function is not required.

Standby Mode

When the serial interface is idle and the PWM intensity

control is unused, the MAX7314 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 MAX7314, like all I²C slaves, has to monitor every

transmission.

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...25

下载PDF

与MAX7314AEG+相关器件

型号	品牌	描述	获取价格	数据表
MAX7314AEG+T	MAXIM	Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, PDSO24, 0.150 INCH, 0.025 INCH PITCH, MO-137, QS	获取价格
MAX7314AEG-T	MAXIM	Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, PDSO24, 0.150 INCH, 0.025 INCH PITCH, MO-137, QS	获取价格
MAX7314ATG	MAXIM	18-Port GPIO with LED Intensity Control, Interrupt, and Hot-Insertion Protection	获取价格
MAX7314ATG+	MAXIM	Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD2, TQFN-24	获取价格
MAX7314ATG+T	MAXIM	Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD2, TQFN-24	获取价格
MAX7314ATG-T	MAXIM	Parallel I/O Port, 8-Bit, 16 I/O, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGD2, TQFN-24	获取价格

与MAX7314AEG+相关文章

MAX6675资料手册参数详解、引脚配置说明
2024-05-13

4
LM258引脚图及功能介绍、主要参数分析
2024-05-13

2
CD4052资料手册参数详解、引脚配置说明
2024-05-13

4
一文带你了解TPS5430资料手册分析：参数介绍、引脚配置说明
2024-05-13

4

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX7314AEG+

MAX7314AEG+ 技术参数

MAX7314AEG+ 数据手册

与MAX7314AEG+相关器件

与MAX7314AEG+相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX7314AEG+

MAX7314AEG+ 技术参数

MAX7314AEG+ 数据手册

与MAX7314AEG+相关器件

与MAX7314AEG+相关文章

您还可以找

您在本页遇到什么问题？