PIC16C620 Microchip Technology, PIC16C620 Datasheet - Page 10
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PIC16C620
Manufacturer Part Number
PIC16C620
Description
EPROM-Based 8-Bit CMOS Microcontroller
Manufacturer
Microchip Technology
Datasheet
1.PIC16C620.pdf
(108 pages)
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PIC16C62X
FIGURE 3-1:
DS30235G-page 10
Note 1: Higher order bits are from the STATUS register.
PIC16C620
PIC16C620A
PIC16CR620A
PIC16C621
PIC16C621A
PIC16C622
PIC16C622A
OSC1/CLKIN
OSC2/CLKOUT
Device
Program
Bus
Instruction reg
Generation
Instruction
Decode &
14
EPROM
Program
Control
Memory
Timing
BLOCK DIAGRAM
Program Memory
512 x 14
512 x 14
512 x 14
1K x 14
1K x 14
2K x 14
2K x 14
13
MCLR
Direct Addr
Start-up Timer
Program Counter
80 x 8
96 x 8
96 x 8
80 x 8
96 x 8
128 x 8
128 x 8
Brown-out
8 Level Stack
Watchdog
Power-up
Power-on
Oscillator
Data Memory
Reset
Reset
Timer
Timer
(13-bit)
V
(RAM)
DD
, V
SS
7
RAM Addr
Preliminary
3
Data Bus
(1)
Addr MUX
Registers
W reg
ALU
RAM
File
STATUS reg
FSR reg
8
9
MUX
Indirect
Addr
8
Comparator
Reference
I/O Ports
Voltage
TMR0
+
+
-
-
1998 Microchip Technology Inc.
PORTB
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3
RA4/T0CKI
REF