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PIC18F4520E/MLQTP 数据表(PDF) 13 Page - Microchip Technology |
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PIC18F4520E/MLQTP 数据表(HTML) 13 Page - Microchip Technology |
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13 / 390 page  2004 Microchip Technology Inc. Preliminary DS39631A-page 11 PIC18F2420/2520/4420/4520 FIGURE 1-2: PIC18F4420/4520 (40/44-PIN) BLOCK DIAGRAM Instruction Decode and Control Data Latch Data Memory ( 3.9 Kbytes ) Address Latch Data Address<12> 12 Access BSR FSR0 FSR1 FSR2 inc/dec logic Address 4 12 4 PCH PCL PCLATH 8 31 Level Stack Program Counter PRODL PRODH 8 x 8 Multiply 8 BITOP 8 8 ALU<8> Address Latch Program Memory (16/32 Kbytes) Data Latch 20 8 8 Table Pointer<21> inc/dec logic 21 8 Data Bus<8> Table Latch 8 IR 12 3 ROM Latch PORTD RD0/PSP0 PCLATU PCU PORTE MCLR/VPP/RE3(2) RE2/CS/AN7 RE0/RD/AN5 RE1/WR/AN6 Note 1: CCP2 is multiplexed with RC1 when configuration bit CCP2MX is set, or RB3 when CCP2MX is not set. 2: RE3 is only available when MCLR functionality is disabled. 3: OSC1/CLKI and OSC2/CLKO are only available in select oscillator modes and when these pins are not being used as digital I/O. Refer to Section 2.0 “Oscillator Configurations” for additional information. :RD4/PSP4 EUSART Comparator MSSP 10-bit ADC Timer2 Timer1 Timer3 Timer0 CCP2 HLVD ECCP1 BOR Data EEPROM W Instruction Bus <16> STKPTR Bank 8 State machine control signals Decode 8 8 Power-up Timer Oscillator Start-up Timer Power-on Reset Watchdog Timer OSC1(3) OSC2(3) VDD, Brown-out Reset Internal Oscillator Fail-Safe Clock Monitor Precision Reference Band Gap VSS MCLR(2) Block INTRC Oscillator 8 MHz Oscillator Single-Supply Programming In-Circuit Debugger T1OSI T1OSO RD5/PSP5/P1B RD6/PSP6/P1C RD7/PSP7/P1D PORTA PORTB PORTC RA4/T0CKI/C1OUT RA5/AN4/SS/HLVDIN/C2OUT RB0/INT0/FLT0/AN12 RC0/T1OSO/T13CKI RC1/T1OSI/CCP2(1) RC2/CCP1/P1A RC3/SCK/SCL RC4/SDI/SDA RC5/SDO RC6/TX/CK RC7/RX/DT RA3/AN3/VREF+ RA2/AN2/VREF-/CVREF RA1/AN1 RA0/AN0 RB1/INT1/AN10 RB2/INT2/AN8 RB3/AN9/CCP2(1) OSC2/CLKO(3)/RA6 RB4/KBI0/AN11 RB5/KBI1/PGM RB6/KBI2/PGC RB7/KBI3/PGD OSC1/CLKI(3)/RA7 |
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