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ڵλãʮij_ٷ > LCDʾӿĽӿڵ·
LCDʾӿĽӿڵ·
ԴLCDҺҵѶ         ʱ䣺2018/12/19
LCDʾӿĽӿڵ·-LCDҺҵѶ

PlCl6F877ƬΪģɶԪ˻ԪִлԪⵥԪȲֵĿƣƲƷĹҪ󣬸ܵĶ£

̵λúͷֱRE0RC2ƣ

ֵλúͷֱRB1RC1ƣ

̵뵽RB7ڣ

ֵ뵽RBGڣ

ͨRD0ڣ

ָʾͨRD1ڣ

ɨΪRB0RB3

ɨΪRD2RD3RD4RD7ڣ

LCDͨͨRPDREIRE2RD5ʵ֡

PICIDP877Ƭڸָλ£

ϵ縴λPOR

MCLR¸λ

MCLRλSLEEPڼ䣻

WDTڼλ

WDTѣSLEEPڼ䣩

ѹλ

һЩĴPORδ֪κθλʱı乲Ĵڼ䶼ͨϵ縴λPORNCLRWDfλ˯ڼ䣬NCLRλBDRϸλλ״̬DzWDTѵӰ죬ΪЩλеļTDPDλڲͬĸλ״̬б10

ƬMCLRλͨʮij_ٷһMCLR̽ͺС壬Ȼһʮij_ٷЧMCLRСȡ

1ϵ縴λPOR

VDD̽⵽ʱ1.21.1V֮䣩һϵ縴λ塣Ϊ˳PORMCLRVDDͨһ⽫ʡȥͨϵ縴λⲿRCҪȷVDDʱ䡣

Ƭʼʱ˳λƬвﵽҪԱ֤УѹƵʡ¶ȣЩﲻƬһֱָλ״ֱ̬вﵽҪ󣬽ѹλ

2ϵ綨ʱPWRT

ϵ綨ʱڴPOPϵʱṩһ̶72msPWRTһڲRCϣPWRTһãƬһֱڸλ״̬PWRTʱʱVDDһɽܵĵƽṩһ趨λʹܣʹPWRT

ϵʱʱŵƬIJͬVDD¶Լ̵ı仯ͬ

3𶯶ʱOST

PWRTʱ֮𶯶ʱṩһ1024ڵʱ0SC1룩֤гʼ񵴺ȶ

OSTXTLPIISʽ£ϵ縴λ˯лʱá

4ѹλB0R

һλBODENܹʹܣ0ʹܣ1ѹλ·VDD½4.0VVBORD005VBORڲTBOR󣬽ѹλоƬVDD½4.0VұȲTBORСλоƬܲλ

һѹоƬڽѹλ״ֱ̬VDDVBORϵ綨ʱֵƬڸλ״̬72msPWRTڼ䣬ʮij_ٷϵ綨ʱλVDDVB0Rʱѹλ¿ʼλʹʱϵ綨ʱӦһֱʹܶPWRTλ״̬

ϵʱ˳£PORλʱһPORλʱPWRTӳٿʼPWRTLPXTHSʱOSTʼ1204ڡOSTʱƬ븴λ

MCLRֽϳʱ͵ƽֹMCLRΪߵƽʱС

6Դƣ״̬ĴPCON

Դƣ״̬ĴPCONʮij_ٷλ

λ0BORѹλ״̬λPORϵ縴λʱδ֪ģû뽫λ1ĸλBOR0ѹλBOR״̬λλѹλ·ʹܣBORλDzȷġ

λ1PORϵ縴λPOR0ʱ治Ӱ졣һPOR֮û뽫λ1ĸλPOR0PORλ

7жϡ

PICl6877ʮij_ٷ10жԴжϿƼĴINTCONñ־λ¼жʮij_ٷ浥ȫжʹλ

һȫжʹλGIFINTCON7ʹܻʹʮij_ٷжϡλGIEʹʱһжϱ־λλ1ʱжϽжͨڸּĴӦʹλֹGIEλ״̬Σж϶1ģGIEλڸλʱO

жϷָRETFIEGIEλ1ʹжϡRBOINTжϣRB˿ڸıжϺTMRжϱ־INTCONĴ

ⲿжϱ־⹦ܼĴPIR1PMӦĵжʹλ⹦ܼĴPIE1PIE2ⲿжʹλ⹦ܼĴINTCONܺصλGIFλ״̬Σжϱ־λ1

8INTжϡ

RBOINTϵⲿжΪشINTEDGλOPTION61ʱΪشINTEDGλ0ģΪ½شRBOINTϳһʮij_ٷЧʱ־λINTFINTCON11

9TMR0жϡ

TMR0ĴһFFHOOH־λTOIFINTCON21ͨʹλTOIEINTCON510жʹܻʹܡ

10˿B仯ж

һPORTB74仯־λRBIFINTCON01ͨʹλRBIFINTCON410жʹܻʹܡ

11жڼݵı档

һжڼ䣬ֻʮij_ٷ淵سֵڶջе͵ûϣһжڼ䱣ĹؼĴĴ״̬Ĵ⽫ʵ֡

PICl6F876M77Ƭÿĸ16λֽǹõģʱĴWTEMPSTATUS-TEMPPLATH-TEMP16洢ԪҪֿ飬ʹ洢´洢ݽס

12ӶʱWDT

ӶʱһеƬרҪκⲿRCOSC1CLKINŵⲿRCǷġζżʹڵƬOSCICLKINOSC2CLKOUTϵʱֹͣ£WDTС磬ִͨһSleepָ

ڼ䣬һWDTʹƬλEDTλƬ˯߷ʽһWDTʹƬѺͻָУWDTѣSTATUSĴTOλͨMDI0

ͨ趨WDTλΪ0ʹWDTòʹá

ԤƵWDTʱԤƵԤƵֵOPTIONRFCĴ1ġ

ڴģʽ£ʹ߽ݴͣϵͳϴͬʱӣSCLKմߣSIDɴд䡣

ƬѡCSΪߵλʱͬʱӣSCLKźŲŻᱻգƬѡCSΪ͵λʱڲ䴮д봮ݽᱻãеݽᱻֹصһλнCSΪߵλ

ͬʱӣSCLKʮij_ٷIJΪڲûʮij_ٷ洫ͣջˣʮij_ٷָ贫ʱȵһִָɲܴһָ

дʱȴʼλҪ5ġtͬλʱãд佫ͬĵڶλֱָ䷽λRWݴѡλRS8λΪ0

ڽյʼλÿָݽգ4λᱻŵ1LSBУ4λᱻŵ1LSBУ඼Ϊ0

нӿʱͼ1ʾ

ͼ1нӿʱ

ҺʾSPIзʽ뵥ƬͨţҺеĿоƬϴͬʱSCLK봮SIDɴд䡣ƬѡźCSΪߵƽʱͬʱSCLKźſʼգCSΪ͵ƽʱеźŽֹ

ڱϵͳУCS뵥ƬλϵͳλʱҺʾҲͬʱλӿͼ2ʾ

ͼ2ӿͼ

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