PIC16LC770-E/SS Microchip Technology, PIC16LC770-E/SS Datasheet - Page 124
![IC MCU OTP 2KX14 A/D PWM 20SSOP](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16LC770-E/SS
Manufacturer Part Number
PIC16LC770-E/SS
Description
IC MCU OTP 2KX14 A/D PWM 20SSOP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC770-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 6x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC16LC770E/SS
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
PIC16LC770-E/SS
Manufacturer:
MICROCHIP
Quantity:
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PIC16C717/770/771
12.4
A Power-on Reset pulse is generated on-chip when a
V
Enable the internal MCLR feature to eliminate external
RC components usually needed to create a Power-on
Reset. A maximum rise time for V
Electrical Specifications for details. For a long rise time,
enable external MCLR function and use circuit as
shown in Figure 12-5.
Two delay timers, (PWRT on OST), have been pro-
vided which hold the device in RESET after a POR
(dependent upon device configuration) so that all oper-
ational parameters have been met prior to releasing the
device to resume/begin normal operation.
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. Brown-out Reset may be used to meet the
start-up conditions, or if necessary an external POR cir-
cuit may be implemented to delay end of RESET for as
long as needed.
FIGURE 12-5:
DS41120B-page 122
Note 1: External Power-on Reset circuit is
DD
rise is detected (in the range of 1.5V - 2.1V).
V
DD
2: R < 40 k is recommended to make sure
3: R1 = 100 to 1 k will limit any current
4: External MCLR must be enabled
D
Power-On Reset (POR)
required only if V
slow. The diode D helps discharge the
capacitor quickly when V
that voltage drop across R does not violate
the device’s electrical specification.
flowing into MCLR from external capacitor
C in the event of MCLR/V
down due to Electrostatic Discharge
(ESD) or Electrical Overstress (EOS).
(MCLRE = 1).
V
DD
R
C
EXTERNAL POWER-ON
RESET CIRCUIT (FOR
SLOW V
R1
DD
PIC16C717/770/771
power-up slope is too
MCLR
DD
DD
DD
PP
RAMP)
is specified. See
powers down.
pin break-
12.5
The Power-up Timer provides a fixed T
on power-up type RESETS only. For a POR, the PWRT
is invoked when the POR pulse is generated. For a
BOR, the PWRT is invoked when the device exits the
RESET condition (V
The Power-up Timer operates on an internal RC oscil-
lator. The chip is kept in RESET as long as the PWRT
is active. The PWRT’s time delay is designed to allow
V
provided to enable/disable the PWRT for the POR only.
For a BOR the PWRT is always available regardless of
the configuration bit setting.
The power-up time delay will vary from chip-to-chip due
to V
parameters for details.
12.6
The Oscillator Start-up Timer (OST) provides 1024
oscillator cycle (from OSC1 input) delay after the
PWRT delay is over. This ensures that the crystal oscil-
lator or resonator has started and stabilized.
The OST time-out is invoked only for XT, LP and HS
modes and only on a power-up type RESET or a wake-
up from SLEEP.
12.7
The Programmable Brown-out Reset module is used to
generate a RESET when the supply voltage falls below
a specified trip voltage. The trip voltage is configurable
to any one of four voltages provided by the BORV<1:0>
configuration word bits.
Configuration bit, BODEN, can disable (if clear/pro-
grammed) or enable (if set) the Brown-out Reset cir-
cuitry. If V
longer than T
ation will RESET the chip. A RESET may not occur if
V
chip will remain in Brown-out Reset until V
above V
that point and will keep the chip in RESET an additional
T
Timer is running, the chip will go back into a Brown-out
Reset and the Power-up Timer will be re-initialized.
Once V
again begin a T
PWRT is always enabled when brown-out is enabled,
the PWRT configuration word bit should be cleared
(enabled) when brown-out is enabled.
PWRT
DD
DD
DD
to rise to an acceptable level. A configuration bit is
falls below the trip point for less than T
. If V
, temperature and process variation. See DC
DD
BOR
Power-up Timer (PWRT)
Oscillator Start-up Timer (OST)
Programmable Brown-Out Reset
(PBOR)
DD
rises above V
DD
. The Power-up Timer will be invoked at
BOR
falls below the specified trip point for
drops below V
, (parameter #35), the brown-out situ-
PWRT
DD
time delay. Even though the
rises above BOR trip point).
BOR
2002 Microchip Technology Inc.
, the Power-up Timer will
BOR
while the Power-up
PWRT
BOR
DD
time-out
. The
rises
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