PIC16CE625-04/SS Microchip Technology, PIC16CE625-04/SS Datasheet - Page 58

• Manufacturer Part Number: PIC16CE625-04/SS
• Description: IC MCU OTP 2KX14 EE COMP 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16CE625-04/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SSOP
• For Use With: 309-1016 - ADAPTER 20-SSOP TO 18-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

PIC16CE62X
FIGURE 10-11: EXTERNAL POWER-ON
FIGURE 10-12: EXTERNAL BROWN-OUT
DS40182C-page 58
Note 1:
Note 1:
V
DD
V
DD
2:
3: R1 = 100 to 1 k will limit any current flowing
D
2: Internal Brown-out Reset circuitry should be
33k
External power-on reset circuit is required only
if V
helps discharge the capacitor quickly when
V
voltage drop across R does not violate the
device’s electrical specification.
into MCLR from external capacitor C in the
event of MCLR/V
Electrostatic Discharge (ESD) or Electrical
Overstress (EOS).
< 40 k
This circuit will activate reset when V
goes below (Vz + 0.7V) where Vz = Zener
voltage.
disabled when using this circuit.
DD
V
DD
DD
powers down.
power-up slope is too slow. The diode D
R
RESET CIRCUIT (FOR SLOW
V
PROTECTION CIRCUIT 1
C
is recommended to make sure that
DD
10k
POWER-UP)
PP
R1
pin breakdown due to
40k
PIC16CE62X
PIC16CE62X
V
MCLR
MCLR
DD
DD
FIGURE 10-13: EXTERNAL BROWN-OUT
FIGURE 10-14: EXTERNAL BROWN-OUT
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.
V
V
SS
2: Internal brown-out detection should be dis-
3: Resistors should be adjusted for the charac-
DD
MCP809
RST
This brown-out circuit is less expensive,
albeit less accurate. Transistor Q1 turns off
when V
abled when using this circuit.
teristics of the transistor.
R1
R2
V
DD
V
V
DD
DD
PROTECTION CIRCUIT 2
PROTECTION CIRCUIT 3
DD
x
bypass
capacitor
is below a certain level such that:
R1 + R2
R1
1999 Microchip Technology Inc.
Q1
40k
= 0.7 V
PIC16CE62X
PIC16CE62X
MCLR
V
V
MCLR
DD
DD