PIC16F628-20E/SS Microchip Technology, PIC16F628-20E/SS Datasheet - Page 33

• Manufacturer Part Number: PIC16F628-20E/SS
• Description: IC MCU FLASH 2KX14 20-SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F628-20E/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

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