PIC18F23K22 Datasheet, PDF (16/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
FIGURE 1-1:
PIC18(L)F2X/4XK22 FAMILY BLOCK DIAGRAM
Table Pointer<21>
Data Bus<8>
inc/dec logic
88
21
PCLATU PCLATH
20
PCU PCH PCL
Program Counter
Address Latch
Program Memory
(8/16/32/64 Kbytes)
Data Latch
31-Level Stack
STKPTR
Data Latch
Data Memory
Address Latch
12
Data Address<12>
4
BSR
12
FSR0
FSR1
FSR2
4
Access
Bank
12
8
Table Latch
inc/dec
logic
ROM Latch
Instruction Bus <16>
IR
Address
Decode
OSC1⁽²⁾
OSC2⁽²⁾
SOSCI
SOSCO
MCLR⁽¹⁾
Instruction
Decode and
Control
State machine
control signals
8
PRODH PRODL
Internal
Oscillator
Block
LFINTOSC
Oscillator
16 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
3
BITOP
8
8 x 8 Multiply
8
W
8
8
8
8
ALU<8>
8
Precision
Band Gap
Reference
FVR
BOR
HLVD
Data
EEPROM
Timer0
Timer1
Timer3
Timer5
Timer2
Timer4
Timer6
CTMU
PORTA
RA0:RA7
PORTB
RB0:RB7
PORTC
RC0:RC7
PORTD
RD0:RD7
PORTE
RE0:RE2
RE3⁽¹⁾
DAC
FVR
DAC
Comparators
C1/C2
ECCP1
ECCP2⁽³⁾
ECCP3
CCP4
CCP5
MSSP1
MSSP2
EUSART1
EUSART2
SR Latch
ADC
10-bit
FVR
Note 1: RE3 is only available when MCLR functionality is disabled.
2: OSC1/CLKIN and OSC2/CLKOUT 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 Module (With Fail-Safe Clock Monitor)” for additional information.
3: Full-Bridge operation for PIC18(L)F4XK22, Half-Bridge operation for PIC18(L)F2XK22.
DS41412B-page 16
Preliminary
 2010 Microchip Technology Inc.