PIC16F7X
FIGURE 1-1:
PIC16F73 AND PIC16F76 BLOCK DIAGRAM
13
8
PORTA
PORTB
PORTC
Data Bus
Program Counter
RA0/AN0
RA1/AN1
RA2/AN2/
FLASH
Program
Memory
RAM
File
Registers
8 Level Stack
(13-bit)
RA3/AN3/VREF
RA4/T0CKI
RA5/AN4/SS
Program
Bus
14
RAM Addr(1)
9
RB0/INT
RB1
Addr MUX
Instruction reg
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
Indirect
Addr
7
Direct Addr
8
FSR reg
STATUS reg
8
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
3
MUX
Power-up
Timer
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
Oscillator
Instruction
Decode &
Control
Start-up Timer
ALU
Power-on
Reset
8
Timing
Generation
Watchdog
Timer
W reg
OSC1/CLKIN
OSC2/CLKOUT
Brown-out
Reset
MCLR VDD, VSS
Timer0
CCP1
Timer1
CCP2
Timer2
8-bit A/D
Synchronous
Serial Port
USART
Device
Program FLASH
Data Memory
PIC16F73
PIC16F76
4K
8K
192 Bytes
368 Bytes
Note 1: Higher order bits are from the STATUS register.
DS30325B-page 6
2002 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
