Datasheet > MK715RTR

MK715RTR

更新时间： 2024-09-20 22:30:07

品牌	Logo	应用领域
矽成 - ICSI		商用集成电路光电二极管控制器
页数	文件大小	规格书
22页	376K
描述
Touch Screen Controller

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中文翻译

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数据手册

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MK715RTR 数据手册

MK715

Touch Screen Controller

General Description

Features

Tiny 20 pin SSOP (150 mil body)

4 microamp standby current

The MK715 Touch Screen Controller IC provides all the

screen drive, Analog to Digital converter (ADC) and

controlcircuitstoeasilyinterfaceto4-wireanalogresistive

touch screens. It also includes a general purpose A to D

converter and a clock synthesizer.

Less than 3mA active current at 3.3V, including

screendrive

Touch pressure can be measured

One or two general purpose A to D inputs

On-chipvoltagereference

32.768kHz crystal/clock input

MHz clock outputs available

Operates with four wire touch screens

Ratiometric conversion eliminates screen

calibration

Automatic wake up upon screen touch

Programmable conversion rate to a maximum of

303 points per second

The IC continually monitors the screen waiting for a

touch. In this mode, the supply current is typically 4µA.

When the screen is touched, the IC performs analog to

digital conversions to determine the location of the touch,

stores the X and Y locations in the registers, and issues

an interrupt. This process is repeated up to 303 times per

second until no further screen touches are detected, at

which time the low current mode is resumed.

The device has a general purpose input into the 10-bit

ADC, allowing for the measurement of other inputs such

as battery voltage. The MK715 can be powered from a

3.3V supply, and uses an inexpensive 32.768kHz watch

crystal as the input reference. An internal Phase-Lock

Loop clock synthesizer provides the high speed clock for

the ADC, and the option to have a clock output to drive

other digital chips in the system.

3.3V or 5V supply (2.7V version available)

10 bit A/D converter

Full powerdown control

Touch screen is directly driven - no external

transistors are required

A to D Converter guaranteed monotonic

3 or 4 wire serial interface

The tiny package is the same body size as the 14 pin

SOIC, with 25 mil spacings on the leads.

Pin Assignment

Applications

Notebook Computers

Handheld Computers

PDAs

CLKOUT

INT

VDD

TOUCH#

Touch-screen kiosks

GND

CAP2

CAP1

CAP3

MK715

20 pin SSOP

ICS reserves the right to make changes in the device data identified in this publication

without further notice. ICS advises its customers to obtain the latest version of all device

data to verify that any information being relied upon by the customer is current and accurate.

MK715RevD020200

12 3 4 5 6 7...22

中文翻译

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MK715RTRLF	IDT	获取价格	Consumer Circuit, PDSO20, 0.150 INCH, 0.025 INCH PITCH, SSOP-20
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MK7-1A51D-500T	MEDER	获取价格	Cylindrical Reed Sensors with M8 Thread
MK7-1A51D-500U	MEDER	获取价格	Cylindrical Reed Sensors with M8 Thread
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MK7-1A51D-500X	MEDER	获取价格	Cylindrical Reed Sensors with M8 Thread

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