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PIC18F4550ESOSQTP Datasheet(PDF) 12 Page - Microchip Technology |
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PIC18F4550ESOSQTP Datasheet(HTML) 12 Page - Microchip Technology |
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12 / 430 page  PIC18F2455/2550/4455/4550 DS39632D-page 10 Preliminary © 2007 Microchip Technology Inc. FIGURE 1-1: PIC18F2455/2550 (28-PIN) BLOCK DIAGRAM Data Latch Data Memory (2 Kbytes) Address Latch Data Address<12> 12 Access BSR 44 PCH PCL PCLATH 8 31 Level Stack Program Counter PRODL PRODH 8 x 8 Multiply 8 8 8 ALU<8> Address Latch Program Memory (24/32 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 PCLATU PCU PORTE MCLR/VPP/RE3(1) Note 1: RE3 is multiplexed with MCLR and is only available when the MCLR Resets are disabled. 2: 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. 3: RB3 is the alternate pin for CCP2 multiplexing. W Instruction Bus <16> STKPTR Bank 8 8 8 BITOP FSR0 FSR1 FSR2 inc/dec Address 12 Decode logic EUSART Comparator MSSP 10-Bit ADC Timer2 Timer1 Timer3 Timer0 HLVD CCP2 BOR Data EEPROM USB Instruction Decode & Control State Machine Control Signals Power-up Timer Oscillator Start-up Timer Power-on Reset Watchdog Timer OSC1(2) OSC2(2) VDD, Brown-out Reset Internal Oscillator Fail-Safe Clock Monitor Reference Band Gap VSS MCLR(1) Block INTRC Oscillator 8 MHz Oscillator Single-Supply Programming In-Circuit Debugger T1OSI T1OSO USB Voltage Regulator VUSB PORTB PORTC RB0/AN12/INT0/FLT0/SDI/SDA RC0/T1OSO/T13CKI RC1/T1OSI/CCP2(3)/UOE RC2/CCP1 RC4/D-/VM RC5/D+/VP RC6/TX/CK RC7/RX/DT/SDO RB1/AN10/INT1/SCK/SCL RB2/AN8/INT2/VMO RB3/AN9/CCP2(3)/VPO RB4/AN11/KBI0 RB5/KBI1/PGM RB6/KBI2/PGC RB7/KBI3/PGD PORTA RA4/T0CKI/C1OUT/RCV RA5/AN4/SS/HLVDIN/C2OUT RA3/AN3/VREF+ RA2/AN2/VREF-/CVREF RA1/AN1 RA0/AN0 OSC2/CLKO/RA6 CCP1 |
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