PIC16C662-04E/L Microchip Technology, PIC16C662-04E/L Datasheet - Page 60
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PIC16C662-04E/L
Manufacturer Part Number
PIC16C662-04E/L
Description
IC MCU OTP 4KX14 COMP 44PLCC
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C662-04E/L
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
Brown-out Detect/Reset, LED, POR, WDT
Number Of I /o
33
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-PLCC
For Use With
DVA16XL441 - ADAPTER DEVICE ICE 44PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16C662-04E/L
Manufacturer:
Microchip Technology
Quantity:
10 000
PIC16C64X & PIC16C66X
9.4
9.4.1
A Power-on Reset pulse is generated on-chip when
V
take advantage of the POR, just tie the MCLR pin
directly (or through a resistor) to V
eliminate external RC components usually needed to
create a Power-on Reset. A maximum rise time for V
is required. See Electrical Specifications for details.
When the device starts normal operation (exits the
reset condition), device operating parameters (voltage,
frequency, temperature, etc.) must be met to ensure
operation. If these conditions are not met, the device
must be held in reset until the operating conditions are
met.
For additional information, refer to Application Note
AN607 “ Power-up Trouble Shooting. ”
9.4.2
The Power-up Timer provides a fixed 72 ms (nominal)
delay on power-up only, from POR or BOR. The
Power-up Timer operates on an internal RC oscillator.
The chip is kept in reset as long as PWRT is active. The
PWRT delay allows V
A configuration bit, PWRTE can disable (if set) or
enable (if cleared or programmed) the Power-up Timer.
The Power-up Timer should always be enabled when
Brown-out Reset is enabled.
FIGURE 9-8:
DS30559A-page 60
DD
rise is detected (in the range of 1.6V to 1.8V). To
Power-on Reset (POR), Power-up
Timer (PWRT), Oscillator Start-up
Timer (OST), Brown-out Reset (BOR),
and Parity Error Reset (PER)
POWER-ON RESET (POR)
POWER-UP TIMER (PWRT)
Internal
Internal
Internal
Reset
Reset
Reset
BROWN-OUT SITUATIONS
V
V
V
DD
DD
DD
DD
to rise to an acceptable level.
DD
. This will
Preliminary
DD
<72 ms
72 ms
The power-up time delay will vary from chip to chip due
to V
parameters for details.
9.4.3
The Oscillator Start-Up Timer (OST) provides a 1024
oscillator cycle (from OSC1 input) delay after the
PWRT delay is over. This ensures that the crystal
oscillator or resonator has started and stabilized.
The OST time-out is invoked only for XT, LP, and HS
modes and only on Power-on Reset or wake-up from
SLEEP.
9.4.4
PIC16C64X & PIC16C66X devices have on-chip
Brown-out Reset circuitry. A configuration bit, BODEN,
can disable (if clear/programmed) or enable (if set) the
Brown-out Reset circuitry. If V
(Parameter D005 in ES section) for greater than
parameter 35 in Table 12-6, the brown-out situation will
reset the chip. A reset is not guaranteed to occur if V
falls below 4.0V for less than parameter 35. The chip
will remain in Brown-out Reset until V
BV
keep the chip in reset an additional 72 ms. If V
below BV
chip will go back into a Brown-out Reset and the
Power-up Timer will be initialized. Once V
above BV
time delay. The Power-up Timer should always be
enabled when Brown-out Reset is enabled. Figure 9-8
shows typical Brown-out situations.
DD
72 ms
72 ms
DD
. The Power-up Timer will now be invoked and will
, temperature, and process variations. See DC
OSCILLATOR START-UP TIMER (OST)
BROWN-OUT RESET (BOR)
DD
DD
, the Power-up Timer will execute a 72 ms
while the Power-up Timer is running, the
1996 Microchip Technology Inc.
BV
BV
BV
BV
BV
BV
DD
DD
DD
DD
DD
DD
DD
Max.
Min.
Max.
Min.
Max.
Min.
falls below 4.0V
DD
rises above
DD
DD
drops
rises
DD