PIC16F627-20/SS Microchip Technology, PIC16F627-20/SS Datasheet - Page 102

• Manufacturer Part Number: PIC16F627-20/SS
• Description: IC MCU FLASH 1KX14 COMP 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F627-20/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: 1.75KB (1K 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: 0°C ~ 70°C
• Package / Case: 20-SSOP
• For Use With: XLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOPAC164018 - MODULE SKT PROMATEII 20SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

PIC16F62X
FIGURE 14-11:
FIGURE 14-12:
DS40300C-page 100
Note 1: External Power-on Reset circuit is required
Note 1: This circuit will activate RESET when V
V
V
DD
DD
2: R < 40 kΩ is recommended to make sure
3: R1 = 100Ω to 1 kΩ will limit any current
2: Internal Brown-out Detect Reset circuitry
D
33k
only if V
diode D helps discharge the capacitor
quickly when V
that voltage drop across R does not violate
the device’s electrical specification.
flowing into MCLR from external capacitor
C in the event of MCLR/V
due to Electrostatic Discharge (ESD) or
Electrical Overstress (EOS).
goes below (Vz + 0.7V) where Vz = Zener
voltage.
should be disabled when using this circuit.
V
DD
R
DD
C
10k
EXTERNAL POWER-ON
RESET CIRCUIT (FOR
SLOW V
power-up slope is too slow. The
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
DD
R1
powers down.
40k
DD
PP
POWER-UP)
MCLR
V
PIC16F62X
PIC16F62X
MCLR
DD
pin breakdown
DD
Preliminary
FIGURE 14-13:
Note
V
DD
1:
2:
3:
R1
R2
This Brown-out Circuit is less expensive, albeit
less accurate. Transistor Q1 turns off when V
below a certain level such that:
Internal Brown-out Detect Reset should be
disabled when using this circuit.
Resistors should be adjusted for the
characteristics of the transistor.
Vdd x
V
DD
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
x
 2003 Microchip Technology Inc.
R1 + R2
R1 + R2
R1
R1
Q1
40k
= 0.7 V
= 0.7V
MCLR
V
PIC16F62X
DD
DD
is