PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 12

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2220/2320/4220/4320
FIGURE 1-2:
DS39599C-page 10
Program Memory
V
Address Latch
Note
OSC1
OSC2
MCLR
DD
T1OSO
Data Latch
(8- or 16-bit)
(8 Kbytes)
T1OSI
Enhanced
, V
Timer0
CCP
(3)
(3)
SS
(2)
16
21
1: Optional multiplexing of CCP2 input/output with RB3 is enabled by selection of the CCP2MX configuration bit.
2: RE3 is available only when the MCLR Resets are disabled.
3: OSC1, OSC2, CLKI and 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.
21
21
Programming
Low-Voltage
Oscillator
Oscillator
Table Latch
Instruction
Decode &
Internal
INT RC
Debugger
In-Circuit
PIC18F4220/4320 BLOCK DIAGRAM
Block
Control
Table Pointer <2>
inc/dec logic
Timer1
(16-bit)
CCP2
8
20
PCLATU
Start-up Timer
Clock Monitor
ROM Latch
Instruction
Register
Power-on
Watchdog
Brown-out
Power-up
PCU
Oscillator
Fail-Safe
Program Counter
Reset
Timer
Timer
31 Level Stack
Reset
8
PCLATH
PCH
Synchronous
Serial Port
8
Master
Timer2
(8-bit)
PCL
8
Reference
Precision
Voltage
Decode
BIT OP
8
BSR
4
8
3
Address Latch
12
PRODH
inc/dec
8
(512 Bytes)
Address<12>
Data Latch
Data RAM
FSR0
FSR1
FSR2
WREG
Addressable
logic
8 x 8 Multiply
ALU<8>
USART
8
Timer3
(16-bit)
Data Bus<8>
8
12
Bank0, F
PRODL
4
(2)
12
8
8
8
PORTA
PORTB
PORTC
PORTD
PORTE
Data EEPROM
(256 Bytes)
10-bit A/D
Converter
 2003 Microchip Technology Inc.
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI/C1OUT
RA5/AN4/SS/LVDIN/C2OUT
OSC2/CLKO/RA6
OSC1/CLKI/RA7
RB0/AN12/INT0
RB2/AN8/INT2
RB3/AN9/CCP2
RB4/AN11/KBI0
RB5/KBI1/PGM
RB6/KBI2/PGC
RB7/KBI3/PGD
RB1/AN10/INT1
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1/P1A
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5/P1B
RD6/PSP6/P1C
RD7/PSP7/P1D
RE0/AN5/RD
RE1/AN6/WR
RE2/AN7/CS
RE3
(2)
REF
REF
-/CV
+
(1)
(3)
(3)
(1)
REF