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| PIC18F87K22 Datasheet, PDF (14/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology | |||
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PIC18F87K22 FAMILY
FIGURE 1-2:
PIC18F8XK22 (80-PIN) BLOCK DIAGRAM
Data Bus<8>
Table Pointer<21>
inc/dec logic
21
20
88
PCLATU PCLATH
PCU PCH PCL
Program Counter
Address Latch
Program Memory
Data Latch
31-Level Stack
STKPTR
8
Table Latch
Data Latch
Data Memory
(2/4 Kbytes)
Address Latch
12
Data Address<12>
4
BSR
12
FSR0
FSR1
FSR2
4
Access
Bank
12
inc/dec
logic
Instruction Bus <16>
AD15:0, A19:16
(Multiplexed with PORTD,
PORTE and PORTH)
OSC2/CLKO
OSC1/CLKI
Timing
Generation
INTRC
Oscillator
16 MHz
Oscillator
ENVREG
Precision
Band Gap
Reference
Voltage
Regulator
ROM Latch
IR
Instruction
Decode and
Control
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
BOR and
LVD
Address
Decode
State Machine
Control Signals
8
PRODH PRODL
3
BITOP
8
8 x 8 Multiply
8
W
8
8
8
8
ALU<8>
8
VDDCORE/VCAP VDD,VSS
MCLR
PORTA
RA0:RA7(1,2)
PORTB
RB0:RB7(1)
PORTC
RC0:RC7(1)
PORTD
RD0:RD7(1)
PORTE
RE0:RE7(1)
PORTF
RF1:RF7(1)
PORTG
RG0:RG5(1)
PORTH
RH0:RH7(1)
PORTJ
RJ0:RJ7(1)
Timer0
Timer
Timer1 2/4/6/8/10(3)/12(3)
Timer
3/5/7(3)
CTMU
ADC
12-Bit
Comparator
1/2/3
CCP
4/5/6/7/8/9(3)/10(3)
ECCP
1/2/3
EUSART1
EUSART2 RTCC
MSSP1/2
Note 1:
2:
3:
See Table 1-3 for I/O port pin descriptions.
RA6 and RA7 are only available as digital I/O in select oscillator modes. See Section 3.0 âOscillator Configurationsâ for
more information.
Unimplemented on the PIC18F85K22.
DS39960B-page 14
Preliminary
ï£ 2010 Microchip Technology Inc.
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