PIC16C662-10I/SP Microchip Technology, PIC16C662-10I/SP Datasheet - Page 10

• Manufacturer Part Number: PIC16C662-10I/SP
• Description: 8-Bit EPROM Microcontrollers with Analog Comparators
• Manufacturer: Microchip Technology

PIC16C64X & PIC16C66X
FIGURE 3-1:
DS30559A-page 10
OSC1/CLKIN
OSC2/CLKOUT
PIC16C641 has 2K x 14 Program Memory and 128 x 8 RAM
PIC16C642 has 4K x 14 Program Memory and 176 x 8 RAM
Program
Bus
Instruction reg
Generation
Instruction
Decode &
14
EPROM
Program
Control
PIC16C641/642 BLOCK DIAGRAM
Memory
Timing
13
MCLR
Direct Addr
Start-up Timer
Program Counter
Parity Error
8 Level Stack
Brown-out
Watchdog
Power-up
Oscillator
Power-on
Reset
Reset
Reset
Timer
Timer
(13-bit)
V
DD
RAM Bank
, V
Select
SS
7
Preliminary
3
Registers
Data Bus
RAM
STATUS reg
Addr MUX
File
W reg
ALU
FSR reg
8
MUX
9
Indirect
Addr
8
Comparator
Reference
Voltage
PORTA
PORTB
PORTC
Timer0
+
+
-
-
1996 Microchip Technology Inc.
RA5
RB0/INT
RB1
RB2
RB3
RB4
RB5
RB6
RB7
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3
RA4/T0CKI
REF