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NXP  ARM2007-12-7 14:09:00

刚开始学RAM 的朋友,一起交流一下!!

uploadfile-/2007-12/127714228.pdf

WAVECOM 产品常用操作和AT 阅读全文 | 回复 | 引用通告

                                         Q24PL WIP AT GPRS阅读全文 | 回复 | 引用通告

;-----------------------------------------------------------------------------
; Assembly main line
;-----------------------------------------------------------------------------
;----------------port 2---------------;
;----------Ab xx Cb Ba Bb led Aa Ca----------;
;--1. AaBb xx xx xx xx xx  xx xx xx ----------;
;--2. AaCb xx xx xx xx xx  xx xx xx ----------;
;--3. BaCb xx xx xx xx xx  xx xx xx ----------;
;--4. BaAb xx xx xx xx xx  xx xx xx ----------;
;--5. CaAb xx xx xx xx xx  xx xx xx ----------;
;--6. CaBb xx xx xx xx xx  xx x
……

Introduction

Capacitive sensor keyboards are widely used in modern compact devices. Each keyboard sensor can be connected to the individual microcontroller pin if number of used sensors is not large. Such connection scheme allows built the keyboard with up to 24 sensors on CY8C21434 microcontroller. If sensors number is larger than available microcontroller pins other keyboard structure should be used. One of the possible methods for solving th
……

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