Datasheet

 2004 Microchip Technology Inc. DS30498C-page 7
PIC16F7X7
FIGURE 1-2: PIC16F747 AND PIC16F777 BLOCK DIAGRAM
Standard
Program
Memory
4K/8K x 14
13
Data Bus
8
14
Program
Bus
Instruction Register
Program Counter
8-Level Stack
(13-bit)
RAM
File
Registers
368 x 8
Direct Addr
7
RAM Addr
(1)
9
Addr MUX
Indirect
Addr
FSR reg
Status reg
MUX
ALU
WREG
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Instruction
Decode &
Control
Timing
Generation
OSC1/CLKI
OSC2/CLKO
V
DD, VSS
PORTA
PORTB
PORTC
PORTD
PORTE
RA4/T0CKI/C1OUT
RA5/AN4/LVDIN/
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
(1)
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD7/PSP7:RD0/PSP0
RE0/RD
/AN5
RE1/WR
/AN6
RE2/CS
/AN7
8
8
Brown-out
Reset
Note 1: Pin location of CCP2 is determined by the CCPMX bit in Configuration Word Register 1.
USART
CCP1, 2, 3
MSSP
10-bit A/DTimer0 Timer1 Timer2
RA3/AN3/VREF+
RA2/AN2/VREF-/CVREF
RA1/AN1
RA0/AN0
Parallel Slave Port
8
3
Comparators BOR/LVD
Addressable
RB0/INT/AN12
RB7/PGD:RB6/PGC
RB1/AN10
RB2/AN8
RB3/CCP2
(1)
/AN9
RB4/AN11
RB5/AN13/CCP3
MCLR/VPP/RE3
Flash
SS
/C2OUT
OSC2/CLKO/RA6
OSC1/CLKI/RA7