EC340H-04 是一款多功能循環(huán)定時(shí)IC芯片，睡眠低功耗，低至5ua，寬工作電壓范圍，輸入工作電

壓2.4V-5V。IO輸出口可以輸出高電平和低電平兩種狀態(tài)。內(nèi)有8種不同的循環(huán)定時(shí)模式。定時(shí)時(shí)間到

自動(dòng)停止工作，自動(dòng)開始工作，使用方便，可設(shè)定時(shí)間為：

                                                                                                10小時(shí)ON~ 14小時(shí)OFF

                                                                                                   8小時(shí)ON~ 16小時(shí)OFF

                                                                                                   7小時(shí)ON~ 17小時(shí)OFF

                                                                                                   6小時(shí)ON~ 18小時(shí)OFF

                                                                                                   5小時(shí)ON~ 19小時(shí)OFF

                                                                                                   4小時(shí)ON~ 20小時(shí)OFF

                                                                                                   3小時(shí)ON~ 21小時(shí)OFF

                                                                                                   2小時(shí)ON~ 22小時(shí)OFF

   定時(shí)芯片上電后，如果晶振不起振，OUT 輸出高電平。晶振起振后 OUT 輸出低電平，定時(shí)時(shí)間到

OUT輸出高電平。TEST是定時(shí)快速測試按鍵，按下TEST，定時(shí)幾小時(shí)，OUT就相應(yīng)的閃幾次。io口高電

平輸出有20mA、低電平輸出有40mA。定時(shí)IC用K1、K2、K3、K4、K5、K6來選擇定時(shí)模式，循環(huán)定時(shí)采

用32.768KHZ晶體振蕩，定時(shí)精準(zhǔn)無誤差。