PIC16C6X
FIGURE 3-2: PIC16C62/62A/R62/64/64A/R64 BLOCK DIAGRAM
13
8
PORTA
Data Bus
Program Counter
EPROM/
ROM
Program
Memory
RA0
RA1
RA2
RA3
RAM
File
Registers
8 Level Stack
(13-bit)
2K x 14
RA4/T0CKI
RA5/SS
128 x 8
Program
Bus
14
RAM Addr(1)
PORTB
9
Addr MUX
Instruction reg
RB0/INT
RB7:RB1
Indirect
Addr
7
Direct Addr
8
FSR reg
STATUS reg
8
PORTC
RC0/T1OSO/T1CKI(4)
RC1/T1OSI(4)
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
3
MUX
Power-up
Timer
Oscillator
Instruction
Decode &
Control
Start-up Timer
ALU
RC6
Power-on
Reset
RC7
8
Timing
Generation
Watchdog
Timer
W reg
PORTD
OSC1/CLKIN
OSC2/CLKOUT
Brown-out
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
Reset(3)
MCLR VDD, VSS
Parallel Slave
Port
PORTE
RE0/RD
RE1/WR
RE2/CS
Timer1
Timer0
Timer2
CCP1
(Note 2)
Synchronous
Serial Port
Note 1: Higher order bits are from the STATUS register.
2: PORTD, PORTE and the Parallel Slave Port are not available on the PIC16C62/62A/R62.
3: Brown-out Reset is not available on the PIC16C62/64.
4: Pin functions T1OSI and T1OSO are swapped on the PIC16C62/64.
1997 Microchip Technology Inc.
DS30234D-page 11
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