PIC16C63A/65B/73B/74B
FIGURE 3-1:
PIC16C63A/65B/73B/74B BLOCK DIAGRAM
13
Program Counter
EPROM
Program
Memory
8 Level Stack
(13-bit)
RAM
File
Registers
RAM Addr
(1)
9
PORTB
RB0/INT
Indirect
Addr
RB7:RB1
Data Bus
8
PORTA
RA0/AN0
(2)
RA1/AN1
(2)
RA2/AN2
(2)
RA3/AN3/V
REF
(2)
RA4/T0CKI
RA5/SS/AN4
(2)
Program
Bus
14
Instruction reg
Direct Addr
7
Addr MUX
8
FSR reg
STATUS reg
8
3
PORTC
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
PORTD
(3)
W reg
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
PORTE
(3)
RE0/RD/AN5
(2,3)
Timer0
Timer1
Timer2
A/D
(2)
RE1/WR/AN6
(2,3)
RE2/CS/AN7
(2,3)
Power-up
Timer
Instruction
Decode &
Control
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
8
MUX
ALU
Parallel Slave Port
MCLR
V
DD
, V
SS
(3)
CCP1
CCP2
Synchronous
Serial Port
USART
Note 1:
Higher order bits are from the STATUS register.
2:
A/D is not available on the PIC16C63A/65B.
3:
PSP and Ports D and E are not available on PIC16C63A/73B.
DS30605C-page 10
2000 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
