PIC18F242 MICROCHIP [Microchip Technology], PIC18F242 Datasheet - Page 10

• Manufacturer Part Number: PIC18F242
• Description: 28/40-pin High Performance, Enhanced FLASH Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX2
FIGURE 1-1:
DS39564C-page 8
Note
MCLR
OSC2/CLKO
OSC1/CLKI
T1OSCI
T1OSCO
V
DD
Program Memory
Address Latch
(up to 2 Mbytes)
, V
Data Latch
SS
CCP1
Timer0
1: Optional multiplexing of CCP2 input/output with RB3 is enabled by selection of configuration bit.
2: The high order bits of the Direct Address for the RAM are from the BSR register (except for the MOVFF instruction).
3: Many of the general purpose I/O pins are multiplexed with one or more peripheral module functions. The multiplexing combinations
16
are device dependent.
21
21
Generation
PIC18F2X2 BLOCK DIAGRAM
Reference
Precision
Instruction
Voltage
Decode &
Table Latch
Timing
4X PLL
Control
Table Pointer
inc/dec logic
Timer1
8
CCP2
21
PCLATU
ROM Latch
Instruction
Register
Start-up Timer
Programming
Low Voltage
PCU
Program Counter
Power-on
Watchdog
Brown-out
Debugger
Power-up
Oscillator
In-Circuit
31 Level Stack
Reset
Timer
Timer
Reset
8
PCLATH
PCH
Synchronous
Serial Port
8
Master
Timer2
PCL
8
Decode
BIT OP
4
BSR
3
8
12
PRODH
8
inc/dec
Address Latch
Address<12>
FSR0
FSR1
FSR2
WREG
Addressable
Data RAM
logic
Data Latch
8 x 8 Multiply
ALU<8>
USART
8
Data Bus<8>
Timer3
8
12
PRODL
4
Bank0, F
(2)
12
8
8
8
Data EEPROM
PORTA
PORTB
PORTC
A/D Converter
© 2006 Microchip Technology Inc.
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RA5/AN4/SS/LVDIN
RA6
RB3/CCP2
RB4
RB0/INT0
RB1/INT1
RB2/INT2
RB5/PGM
RB6/PCG
RB7/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
REF
REF
(1)
-
+
(1)