PIC16C662/JW Microchip Technology, PIC16C662/JW Datasheet - Page 65
![IC MCU EPROM 4KX14 COMP 40CDIP](/photos/6/63/66338/150-40-cdip_sml.jpg)
PIC16C662/JW
Manufacturer Part Number
PIC16C662/JW
Description
IC MCU EPROM 4KX14 COMP 40CDIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C662/JW
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, LED, POR, WDT
Number Of I /o
33
Program Memory Size
7KB (4K x 14)
Program Memory Type
EPROM, UV
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-CDIP (0.600", 15.24mm) Window
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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FIGURE 9-12: EXTERNAL POWER-ON
FIGURE 9-13: EXTERNAL BROWN-OUT
1996 Microchip Technology Inc.
Note 1: External power-on reset circuit is required
Note 1: This circuit will activate reset when V
V
DD
V
2: R < 40 k is recommended to make sure
3: R1 = 100 to 1 k will limit any current
DD
D
2: Internal Brown-out Reset circuitry
3: Resistors should be adjusted for the
only if V
The diode D helps discharge the capaci-
tor quickly when V
that voltage drop across R does not vio-
late the device’s electrical specification.
flowing into MCLR from external capaci-
tor C in the event of MCLR/V
breakdown due to Electrostatic Dis-
charge (ESD) or Electrical Overstress
(EOS).
33k
goes below (Vz + 0.7V) where
Vz = Zener voltage.
should be disabled when using this cir-
cuit.
characteristics of the transistor.
V
DD
R
RESET CIRCUIT (FOR SLOW
V
PROTECTION CIRCUIT 1
C
DD
DD
10k
power-up slope is too slow.
POWER-UP)
R1
DD
40k
powers down.
MCLR
MCLR
V
PIC16CXXX
PIC16CXXX
DD
PP
pin
DD
Preliminary
PIC16C64X & PIC16C66X
FIGURE 9-14: EXTERNAL BROWN-OUT
Note 1: This brown-out circuit is less expensive,
V
DD
2: Internal Brown-out Reset circuitry
3: Resistors should be adjusted for the
albeit less accurate. Transistor Q1 turns
off when V
such that:
should be disabled when using this cir-
cuit.
characteristics of the transistor.
R1
R2
PROTECTION CIRCUIT 2
V
DD
•
DD
R1 + R2
is below a certain level
R1
Q1
40k
= 0.7 V
MCLR
DS30559A-page 65
V
PIC16CXXX
DD
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