PIC16F628-20/P Microchip Technology Inc., PIC16F628-20/P Datasheet - Page 33
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC16F628-20/P
Manufacturer Part Number
PIC16F628-20/P
Description
18 PIN, 3.5 KB FLASH, 224 RAM, 16 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F628-20P.pdf
(170 pages)
Specifications of PIC16F628-20/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
128 Bytes
Input Output
16
Interface
SCI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
3.5K Bytes
Ram Size
224 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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FIGURE 5-4:
FIGURE 5-5:
2003 Microchip Technology Inc.
MCLR
Program
RD
TRISA
RD
PORTA
circuit
mode
Data
Bus
WR
PORTA
WR
TRISA
RD PORTA
TMR0 Clock Input
Data
Bus
MCLRE
MCLR Filter
TRIS Latch
D
Data Latch
D
HV Detect
CK
CK
RD TRISA
Q
V
BLOCK DIAGRAM OF RA4/T0CKI PIN
BLOCK DIAGRAM OF THE
RA5/MCLR/V
SS
Q
Q
Q
Q
EN
Schmitt Trigger
D
Input Buffer
Comparator Output
PP
V
SS
RA5/MCLR/V
PIN
Comparator Mode = 110
Preliminary
PP
FIGURE 5-6:
From OSC1
CLKOUT(F
WR
PORTA
(F
101, 111)
WR
TRISA
RD
TRISA
RD PORTA
Note
F
100, 110
1
0
OSC
OSC
=
=
1:
2:
(2)
(1)
Q
OSC
TRIS Latch
D
D
Data Latch
INTRC with RA6 = I/O or ER with RA6 = I/O.
INTRC with RA6 = CLKOUT or ER with RA6 = CLK-
OUT.
CK
CK
/4)
EN
Q
Q
Q
Q
D
Schmitt Trigger
BLOCK DIAGRAM OF
RA6/OSC2/CLKOUT PIN
Input Buffer
Q
1
0
PIC16F62X
Vss
N
EN
D
OSC
Circuit
DS40300C-page 31
V
Vss
DD
RA4 Pin
Schmitt
Trigger
Input Buffer
V
V
DD
SS
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