PIC18F6390/6490/8390/8490
FIGURE 1-1:
Table Pointer<21>
inc/dec logic
21
20
8
PCLATU PCLATH
PIC18F6X90 (64-PIN) BLOCK DIAGRAM
Data Bus<8>
Data Latch
Data Memory
(3.9 Kbytes)
Address Latch
12
Data Address<12>
4
BSR
12
FSR0
FSR1
FSR2
inc/dec
logic
4
Access
Bank
12
PORTC
PORTB
PORTA
RA0/AN0
RA1/AN1
RA2/AN2/V
REF
-/SEG16
RA3/AN3/V
REF
+/SEG17
RA4/T0CKI/SEG14
RA5/AN4/HLVDIN/SEG15
OSC2/CLKO
(3)
/RA6
OSC1/CLKI
(3)
/RA7
RB0/INT0
RB1/INT1/SEG8
RB2/INT2/SEG9
RB3/INT3/SEG10
RB4/KBI0/SEG11
RB5/KBI1
RB6/KBI2/PGC
RB7/KBI3/PGD
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
8
PCU PCH PCL
Program Counter
31 Level Stack
Address Latch
Program Memory
(48/64 Kbytes)
Data Latch
8
STKPTR
Table Latch
Instruction Bus <16>
ROM Latch
Address
Decode
IR
8
PORTD
Instruction
Decode and
Control
State Machine
Control Signals
PRODH PRODL
3
BITOP
8
8 x 8 Multiply
8
W
8
8
ALU<8>
8
PORTF
8
PORTE
RD7/SEG7:RD0/SEG0
OSC1
(3)
OSC2
(3)
T1OSI
T1OSO
MCLR
(2)
V
DD
, V
SS
Internal
Oscillator
Block
INTRC
Oscillator
8 MHz
Oscillator
Single-Supply
Programming
In-Circuit
Debugger
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
Fail-Safe
Clock Monitor
8
LCDBIAS1
LCDBIAS2
LCDBIAS3
COM0
RE4/COM1
RE5/COM2
RE6/COM3
RE7/CCP2
(1)
/SEG31
RF0/AN5/SEG18
RF1/AN6/C2OUT/SEG19
RF2/AN7/C1OUT/SEG20
RF3/AN8/SEG21
RF4/AN9/SEG22
RF5/AN10/CV
REF
/SEG23
RF6/AN11/SEG24
RF7/SS/SEG25
RG0/SEG30
RG1/TX2/CK2/SEG29
RG2/RX2/DT2/SEG28
RG3/SEG27
RG4/SEG26
MCLR/V
PP
/RG5
(2)
Precision
Band Gap
Reference
BOR
HLVD
ADC
10-Bit
PORTG
Timer0
Timer1
Timer2
Timer3
Comparators
CCP1
CCP2
MSSP
EUSART1
AUSART2
LCD
Driver
Note
1:
2:
3:
CCP2 is multiplexed with RC1 when Configuration bit, CCP2MX, is set, or RE7 when CCP2MX is not set.
RG5 is only available when MCLR functionality is disabled.
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
for additional information.
DS39629C-page 10
©
2007 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
