PIC16LC63A-04/SP Microchip Technology, PIC16LC63A-04/SP Datasheet - Page 89
![IC MCU OTP 4KX14 PWM 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC16LC63A-04/SP
Manufacturer Part Number
PIC16LC63A-04/SP
Description
IC MCU OTP 4KX14 PWM 28DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC63A-04/SP
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
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13.4
13.4.1
A Power-on Reset pulse is generated on-chip when
V
the range of 1.5V - 2.1V). To take advantage of the
POR, just tie the MCLR pin directly (or through a resis-
tor) to V
usually needed to create a POR.
When the device starts normal operation (exits the
RESET condition), device operating parameters (volt-
age, frequency, temperature) 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. The device may be held in RESET by keeping
MCLR at Vss.
For additional information, refer to Application Note
AN607, “Power-up Trouble Shooting.”
13.4.2
The Power-up Timer provides a fixed 72 ms nominal
time-out on power-up from the POR. The PWRT oper-
ates on an internal RC oscillator. The device is kept in
RESET as long as the PWRT is active. The PWRT’s
time delay allows V
configuration bit is provided to enable/disable the
PWRT.
The power-up time delay will vary from chip to chip, due
to V
parameters for details (T
13.4.3
The Oscillator Start-up Timer provides a delay of 1024
oscillator cycles (from OSC1 input) after the PWRT
delay, if enabled. This helps to ensure 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.
DD
2000 Microchip Technology Inc.
DD
rise is detected (parameters D003 and D004, in
, temperature and process variation. See DC
DD
RESETS
. This will eliminate external RC components
POWER-ON RESET (POR)
POWER-UP TIMER (PWRT)
OSCILLATOR START-UP TIMER
(OST)
DD
to rise to an acceptable level. A
PWRT
, parameter #33).
PIC16C63A/65B/73B/74B
13.4.4
The configuration bit, BODEN, can enable or disable
the Brown-out Reset circuit. If V
(parameter D005, about 4V) for longer than T
(parameter #35, about 100 S), the brown-out situation
will reset the device. If V
than T
Once the brown-out occurs, the device will remain in
Brown-out Reset until V
Power-up Timer then keeps the device in RESET for
T
below V
cess will restart when V
Power-up Timer Reset. The Power-up Timer is always
enabled when the Brown-out Reset circuit is enabled,
regardless of the state of the PWRT configuration bit.
13.4.5
On power-up, the time-out sequence is as follows: the
PWRT delay starts (if enabled) when a POR occurs.
Then, OST starts counting 1024 oscillator cycles when
PWRT ends (LP, XT, HS). When the OST ends, the
device comes out of RESET.
If MCLR is kept low long enough, the time-outs will
expire. Bringing MCLR high will begin execution imme-
diately. This is useful for testing purposes or to synchro-
nize more than one PIC16CXX device operating in
parallel.
Table 13-5 shows the RESET conditions for the
STATUS, PCON and PC registers, while Table 13-6
shows the RESET conditions for all the registers.
13.4.6
The Brown-out Reset Status bit, BOR, is unknown on a
POR. It must be set by the user and checked on sub-
sequent RESETS to see if bit BOR was cleared, indi-
cating a BOR occurred. The BOR bit is not predictable
if the Brown-out Reset circuitry is disabled.
The Power-on Reset Status bit, POR, is cleared on a
POR and unaffected otherwise. The user must set this
bit following a POR and check it on subsequent
RESETS to see if it has been cleared.
PWRT
BOR
(parameter #33, about 72mS). If V
BOR
, a RESET may not occur.
BROWN-OUT RESET (BOR)
TIME-OUT SEQUENCE
POWER CONTROL/STATUS
REGISTER (PCON)
during T
PWRT
DD
DD
DD
, the Brown-out Reset pro-
rises above V
falls below V
rises above V
DD
DS30605C-page 89
falls below V
DD
BOR
BOR
should fall
BOR
with the
for less
. The
BOR
BOR
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