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EM78P520N Datasheet(PDF) 97 Page - ELAN Microelectronics Corp |
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EM78P520N Datasheet(HTML) 97 Page - ELAN Microelectronics Corp |
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97 / 124 page  EM78P520N 8-Bit Microprocessor with OTP ROM Product Specification (V1.4) 04.08.2016 89 (This specification is subject to change without prior notice) 6.15 Code Options The EM78P520N has one Code Option word that is not part of the normal program memory. The option bits cannot be accessed during normal program execution. Code Option Register and Customer ID Register arrangement distribution: Word 0 Word 1 Word 2 Bit 12~Bit 0 Bit 12~Bit 0 Bit 12~Bit 0 1. Code Option Register (Word 0) Word 0 Bit Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit2 Bit1 Bit0 Mne monic TYPE1 TYPE0 LVREN LVR1 LVR0 ENWDTB FSMD FMMD1 FMMD0 HLP Protect 1 High High Enable High High Disable High High High High Disable 0 Low Low Disable Low Low Enable Low Low Low Low Enable Bits 12~11 (TYPE1~TYPE0): Type Selection for 48 pins or 44 pins. TYPE1 TYPE0 Type Selection 0 0 Reserved 0 1 Reserved 1 0 EM78P520N (44-pin LQFP/QFP) 1 1 EM78P520N (48-pin LQFP) (default) Bit 10 (LVREN): Low Voltage Reset Enable Bit 0 : Disable 1 : Enable Bits 9~8 (LVR1~LVR0): Low Voltage Reset Voltage Select Bits LVR1 LVR0 Reset Voltage 0 0 2.6V 0 1 3.3V 1 0 3.9V Bit 7 (ENWDTB): Watchdog Timer Enable Bit 0 : Enable 1 : Disable Bits 6~4 (FSMD, FMMD1~FMMD0): Oscillator Modes Selection Bits FSMD FMMD1 FMMD0 Main Oscillator Sub Oscillator 0 0 0 RC type (ERIC) RC type (ERIC) 0 0 1 Crystal type RC type (ERIC) 0 1 0 PLL type RC type (ERIC) 0 1 1 PLL type RC type (ERIC) 1 0 0 RC type (ERIC) Crystal type 1 0 1 Crystal type Crystal type 1 1 0 PLL type Crystal type 1 1 1 Crystal None |
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