PIC16C433T-I/SO Microchip Technology, PIC16C433T-I/SO Datasheet - Page 61

• Manufacturer Part Number: PIC16C433T-I/SO
• Description: IC MCU CMOS 8BIT 10MHZ 2K 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C433T-I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN (Local Interconnect Network)
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• For Use With: AC164030 - MODULE SKT PROMATEII 28DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

FIGURE 9-10: EXTERNAL POWER-ON
FIGURE 9-11: EXTERNAL BROWN-OUT
 2002 Microchip Technology Inc.
Note 1:
This brown-out protection circuit employs Microchip
Technology’s MCP809 microcontroller supervisor. The
MCP8XX and MCP1XX families of supervisors provide
push-pull and open collector outputs, with both high
and low active RESET pins. There are 7 different trip
point selections to accommodate 5V and 3V systems.
2:
3:
V
SS
MCP809
RST
External Power-on Reset circuit is required only
if V
helps discharge the capacitor quickly when V
powers down.
R < 40 kΩ is recommended to make sure that
voltage drop across R does not violate the
device’s electrical specification.
R1 = 100Ω to 1 kΩ will limit any current flowing
into MCLR from external capacitor C, in the
event of MCLR/V
Electrostatic Discharge (ESD), or Electrical
Overstress (EOS).
D
DD
V
V
power-up slope is too slow. The diode D
V
DD
DD
DD
RESET CIRCUIT (FOR SLOW
V
PROTECTION CIRCUIT 3
R
DD
C
Bypass
Capacitor
POWER-UP)
PP
R1
pin breakdown due to
MCLR
PIC16C433
PIC16C433
MCLR
V
DD
DD
Preliminary
FIGURE 9-12: EXTERNAL BROWN-OUT
FIGURE 9-13: EXTERNAL BROWN-OUT
Note 1:
Note 1:
V
V
2:
DD
DD
2: Resistors should be adjusted for the charac-
33k
This circuit will activate RESET when V
below (Vz + 0.7V), where Vz = Zener voltage.
Resistors should be adjusted for the character-
istics of the transistor.
R1
R2
This brown-out circuit is less expensive,
albeit less accurate. Transistor Q1 turns off
when V
teristics of the transistor.
V
DD
PROTECTION CIRCUIT 1
PROTECTION CIRCUIT 2
DD
10k
•
is below a certain level, such that:
R1 + R2
PIC16C433
R1
Q1
4.3k
4.3k
= 0.7V
DS41139B-page 59
PIC16C433
PIC16C433
V
MCLR
V
MCLR
DD
DD
DD
goes