AN1799 datasheet(1/7 Pages) STMICROELECTRONICS

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AN1799/0205

1/7

Rev. 2

AN1799

APPLICATION NOTE

STR71x GPIO

SCANNING A 4x4 MATRIX KEYPAD

INTRODUCTION

The aim of this application note is to show how to scan the 4x4 matrix keypad multiplexed with

a four 7-segment display. The software attached to this application note scans the pressed

key and displays it on the multiplexed 7- segment LEDs.

This application note describes how the interrupt capability of the STR710 device is used to

offer a better key scan.

1

Số phần tương tự - AN1799

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Arista Networks, Inc	AN1799	3Mb / 52P	Quick Start Guide Data Center Switches

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Marktech Corporate	MTAN2121-AG	69Kb / 1P	2.0 4x4 Dot Matrix Display
Asahi Kasei Microsystem...	AK4184	608Kb / 36P	TSC with Keypad Scanner and GPIO Expander
Purdy Electronics Corpo...	KNM20S44	75Kb / 2P	4x4 Monoblock Immersion Proof Keypad
Analog Devices	ADP5585	83Kb / 2P	Keypad Decoder and I/O Expansion GPIO functions GPIO functions Rev. Sp0
Asahi Kasei Microsystem...	AK4184A	626Kb / 36P	TSC with Keypad Scanner and GPIO Expander
Asahi Kasei Microsystem...	AK4184A	669Kb / 36P	TSC with Keypad Scanner and GPIO Expander
STMicroelectronics	AN1781	115Kb / 8P	STR71x GPIO DRIVING FOUR 7-SEGMENT DISPLAY Rev. 2
JFW Industries, Inc.	50MS-313	69Kb / 1P	4x4 MATRIX SWITCH
Megawin Technology Co.,...	MG74PG1B08	1Mb / 128P	Keypad Interrupt function on all GPIO
STMicroelectronics	STEVAL-ILL061V1	159Kb / 7P	High brightness 4x4 RGB LED matrix 15-Oct-2013