PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 9

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 1-1:
 2004 Microchip Technology Inc.
Program Memory
Address Latch
PIC18F1320
PIC18F1220
V
Note
(4 Kbytes)
(8 Kbytes)
Data Latch
MCLR
OSC1
OSC2
DD
T1OSO
T1OSI
Enhanced
, V
Timer0
CCP
16
SS
21
(2)
(2)
(1)
1: RA5 is available only when the MCLR Reset is disabled.
2: OSC1, OSC2, CLKI and CLKO are only available in select oscillator modes and when these pins are not being used as digital
21
I/O. Refer to Section 2.0 “Oscillator Configurations” for additional information.
Generation
21
Programming
Low-Voltage
Oscillator
PIC18F1220/1320 BLOCK DIAGRAM
Timing
INTRC
Debugger
Instruction
In-Circuit
Table Latch
Decode &
Control
Table Pointer <2>
inc/dec logic
Timer1
8
20
Start-up Timer
Clock Monitor
PCLATU
ROM Latch
Instruction
Register
Power-on
Watchdog
Brown-out
Power-up
Oscillator
Fail-Safe
PCU
Reset
Timer
Timer
Reset
Program Counter
31 Level Stack
8
PCLATH
PCH PCL
8
Timer2
8
Reference
Precision
Voltage
Decode
BIT OP
8
4
BSR
8
3
Address Latch
12
PRODH
inc/dec
8
Data RAM
Address<12>
FSR0
FSR1
FSR2
Data Latch
WREG
logic
8 x 8 Multiply
Enhanced
ALU<8>
Timer3
USART
8
Data Bus<8>
8
12
Bank0, F
PRODL
4
(2)
PIC18F1220/1320
12
8
8
8
PORTA
PORTB
A/D Converter
Data EEPROM
RB3/CCP1/P1A
RB4/AN6/RX/DT/KBI0
RB5/PGM/KBI1
RB0/AN4/INT0
RB1/AN5/TX/CK/INT1
RB2/P1B/INT2
RB6/PGC/T1OSO/
T13CKI/P1C/KBI2
RB7/PGD/T1OSI/
P1D/KBI3
RA0/AN0
RA1/AN1/LVDIN
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
MCLR/V
OSC2/CLKO/RA6
OSC2/CLKI/RA7
DS39605C-page 7
PP
/RA5
REF
REF
-
+
(1)
(2)
(2)