PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 7

• Manufacturer Part Number: PIC18C242
• Description: High-Performance Microcontrollers with 10-Bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 1-2:
T1OSI
T1OSO
OSC2/CLKO
OSC1/CLKI
7/99 Microchip Technology Inc.
Note 1: Optional multiplexing of CCP2 input/output with RB3 is enabled by selection of configuration bit.
Program Memory
Address Latch
(up to 2M Bytes)
Data Latch
2: The high order bits of the Direct Address for the RAM are from the BSR register (except for the MOVFF
3: Many of the general purpose I/O pins are multiplexed with one or more peripheral module functions.
CCP1
Timer0
instruction).
The multiplexing combinations are device dependent.
16
21
21
PIC18C4X2 BLOCK DIAGRAM
21
Generation
Reference
Precision
TABLELATCH
Voltage
Timing
4X PLL
Instruction
Decode &
Control
Table Pointer <2>
inc/dec logic
Timer1
CCP2
20
8
MCLR
ROMLATCH
Start-up Timer
Instruction
PCLATU
PCU
Program Counter
Register
Oscillator
Watchdog
Brown-out
Power-up
Power-on
31 Level Stack
Timer
Timer
Reset
Reset
8
PCLATH
PCH
V
DD
Synchronous
Serial Port
8
, V
Master
Timer2
SS
PCL
Preliminary
8
Decode
BIT OP
4
BSR
8
3
address reach)
12
inc/dec
PRODH
Address Latch
Address<12>
FSR0
FSR1
FSR2
8
Data RAM
Data Latch
logic
WREG
(up to 4K
Addressable
8 x 8 Multiply
ALU<8>
USART
8
Timer3
Data Bus<8>
8
12
Bank0, F
PRODL
4
(2)
12
8
8
8
Parallel Slave Port
A/D Converter
PORTD
PORTC
PORTE
PORTA
PORTB
PIC18CXX2
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RA5/AN4/SS/LVDIN
RA6
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD7/PSP7:RD0/PSP0
DS39026B-page 7
RB0/INT0
RB1/INT1
RB2/INT2
RB3/CCP2
RB7:RB4
RE0/AN5/RD
RE1/AN6/WR
RE2/AN7/CS
(1)
REF
REF
-
+
(1)