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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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HC05V7GRS/D Scheda tecnica(PDF) 38 Page - NXP Semiconductors |
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HC05V7GRS/D Scheda tecnica(HTML) 38 Page - NXP Semiconductors |
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38 / 170 page  SECTION 3: EPROM and EEPROM Page 24 MC68HC05V7 Specification Rev. 1.0 BSET CPEN,PROG TURN ON CHARGE PUMP BSET LATCH,PROG ENABLE LATCH BIT BCLR ER1,PROG ENSURE PROGRAM (NOT ERASE) BCLR ER0,PROG ENSURE PROGRAM (NOT ERASE) LDA #SUMPIN GET DATA STA EESTART BSET EEPGM, PROG ENABLE PROGRAMMING POWER JSR DELAY WAIT FOR PROGRAM TIME BCLR EEPGM,PROG CLEAR EEPGM JSR DELAY WAIT FOR PROG VOLTAGE TO FALL BCLR LATCH,PROG CLEAR LATCH BCLR CPEN,PROG DISABLE CHARGE PUMP LDA #SUMPIN CMP EESTART VERIFY BNE OUT1 CLC CLEAR CARRY BIT FOR NO ERROR OUT RTS OUT1 SEC FLAG AN ERROR RTS * THIS ROUTINE GIVES ABOUT A 10 MS DELAY FOR A 2.1Mhz BUS. * THE SAME DELAY ROUTINE IS USED IN THIS EXAMPLE FOR SIMPLICITY, * USING THE LONGEST DELAY TIME. USERS WILL WANT TO WRITE SHORTER * DELAY ROUTINES FOR APPLICATIONS IN WHICH SPEED IS IMPORTANT. DELAY EQU * LDA TCNTH READ MS BYTE OF TIMER COUNTER ADD #$15 ADD OFFSET STA TCMPH STORE BACK IN O/P COMPARE MS BYTE LDA TCNTL READ LS BYTE OF TCR STA TCMPL STORE INTO O/P COMPARE LS BYTE BRCLR OCF,TSR,* WAIT FOR OCF FLAG TO OCCUR RTS 3.2 OPERATION IN STOP AND WAIT The RC oscillator for the EEPROM is automatically disabled when entering STOP mode. The user may want to ensure that the RC oscillator is disabled before entering WAIT mode to help conserve power. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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