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PIC18F8490 Datasheet(PDF) 13 Page - Microchip Technology |
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PIC18F8490 Datasheet(HTML) 13 Page - Microchip Technology |
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13 / 414 page  © 2007 Microchip Technology Inc. DS39629C-page 11 PIC18F6390/6490/8390/8490 FIGURE 1-2: PIC18F8X90 (80-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 412 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 (48/64 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 Note 1: CCP2 is multiplexed with RC1 when Configuration bit, CCP2MX, is set and RE7 when CCP2MX is not set. 2: RG5 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. EUSART1 Comparators MSSP Timer2 Timer1 Timer3 Timer0 HLVD CCP1 BOR ADC 10-Bit 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 AUSART2 CCP2 PORTH RH7/SEG40:RH4/SEG43 RH3/SEG47:RH0/SEG44 LCD Driver PORTA PORTB PORTC RA4/T0CKI/SEG14 RA5/AN4/HLVDIN/SEG15 RB0/INT0 RC0/T1OSO/T13CKI RC1/T1OSI/CCP2(1) RC2/CCP1/SEG13 RC3/SCK/SCL RC4/SDI/SDA RC5/SDO/SEG12 RC6/TX1/CK1 RC7/RX1/DT1 RA3/AN3/VREF+/SEG17 RA2/AN2/VREF-/SEG16 RA1/AN1 RA0/AN0 RB1/INT1/SEG8 RB2/INT2/SEG9 RB3/INT3/SEG10 PORTD RD7/SEG7:RD0/SEG0 OSC2/CLKO(3)/RA6 RB4/KBI0/SEG11 RB5/KBI1 RB6/KBI2/PGC RB7/KBI3/PGD OSC1/CLKI(3)/RA7 PORTE LCDBIAS1 LCDBIAS2 LCDBIAS3 COM0 RE4/COM1 RE5/COM2 RE6/COM3 RE7/CCP2(1)/SEG31 PORTF RF0/AN5/SEG18 RF1/AN6/C2OUT/SEG19 RF2/AN7/C1OUT/SEG20 RF3/AN8/SEG21 RF4/AN9/SEG22 RF5/AN10/CVREF/SEG23 RF6/AN11/SEG24 RF7/SS/SEG25 PORTG RG0/SEG30 RG1/TX2/CK2/SEG29 RG2/RX2/DT2/SEG28 RG3/SEG27 RG4/SEG26 MCLR/VPP/RG5(2) PORTJ RJ7/SEG36:RJ4/SEG39 RJ3/SEG35:RJ0/SEG32 |
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