Datasheet

PIC16F7X
DS30325B-page 6 2002 Microchip Technology Inc.
FIGURE 1-1: PIC16F73 AND PIC16F76 BLOCK DIAGRAM
FLASH
Program
Memory
13
Data Bus
8
14
Program
Bus
Instruction reg
Program Counter
8 Level Stack
(13-bit)
RAM
File
Registers
Direct Addr
7
RAM Addr
(1)
9
Addr MUX
Indirect
Addr
FSR reg
STATUS reg
MUX
ALU
W reg
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Instruction
Decode &
Control
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
MCLR
VDD, VSS
PORTA
PORTB
PORTC
RA4/T0CKI
RA5/AN4/SS
RB0/INT
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
8
8
Brown-out
Reset
Note 1: Higher order bits are from the STATUS register.
USART
CCP2
Synchronous
8-bit A/DTimer0 Timer1 Timer2
Serial Port
RA3/AN3/VREF
RA2/AN2/
RA1/AN1
RA0/AN0
8
3
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
Device Program FLASH Data Memory
PIC16F73 4K 192 Bytes
PIC16F76 8K 368 Bytes
CCP1