PIC16LF876A-I/ML Microchip Technology, PIC16LF876A-I/ML Datasheet - Page 150

• Manufacturer Part Number: PIC16LF876A-I/ML
• Description: IC PIC MCU FLASH 8KX14 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16LF876A-I/ML

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16LF
• No. Of I/o's: 22
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Package: 28QFN EP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Processor Series: PIC16LF
• Core: PIC
• Data Ram Size: 368 B
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: Q1462187

PIC16F87XA
14.4
PIC16F87XA devices have a noise filter in the MCLR
Reset path. The filter will detect and ignore small
pulses.
It should be noted that a WDT Reset does not drive
MCLR pin low.
The behavior of the ESD protection on the MCLR pin
differs from previous devices of this family. Voltages
applied to the pin that exceed its specification can
result in both Resets and current consumption outside
of device specification during the Reset event. For this
reason, Microchip recommends that the MCLR pin no
longer be tied directly to V
network, as shown in Figure 14-5, is suggested.
FIGURE 14-5:
14.5
A Power-on Reset pulse is generated on-chip when
V
advantage of the POR, tie the MCLR pin to V
through an RC network, as described in Section 14.4
“MCLR”. A maximum rise time for V
See Section 17.0 “Electrical Characteristics” for
details.
When the device starts normal operation (exits the
Reset condition), device operating parameters (volt-
age, 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 condi-
tions are met. Brown-out Reset may be used to meet
the start-up conditions. For additional information, refer
to application note, AN607, “Power-up Trouble
Shooting” (DS00607).
DS39582B-page 148
DD
Note 1:
rise is detected (in the range of 1.2V-1.7V). To take
V
DD
R1
MCLR
Power-on Reset (POR)
C1
2:
(1)
R1 < 40 k is recommended to make
sure that the voltage drop across R does
not violate the device’s electrical
specification.
R2 > than 1K will limit any current
flowing into MCLR from the external
capacitor C, in the event of MCLR/V
breakdown due to Electrostatic
Discharge (ESD) or Electrical
Overstress (EOS).
R2
(2)
RECOMMENDED MCLR
CIRCUIT
DD
. The use of an RCR
MCLR
PIC16F87XA
DD
is specified.
PP
DD
14.6
The Power-up Timer provides a fixed 72 ms nominal
time-out on power-up only from the POR. The Power-
up Timer operates on an internal RC oscillator. The
chip is kept in Reset as long as the PWRT is active. The
PWRT’s time delay allows V
level. A configuration bit is provided to enable or
disable the PWRT.
The power-up time delay will vary from chip to chip due
to V
Section 17.0 “Electrical Characteristics” for details
(T
14.7
The Oscillator Start-up Timer (OST) provides a delay of
1024 oscillator cycles (from OSC1 input) after the
PWRT delay is over (if PWRT is 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.
14.8
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
fall below V
process will restart when V
the 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.
14.9
On power-up, the time-out sequence is as follows: the
PWRT delay starts (if enabled) when a POR Reset
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
immediately. This is useful for testing purposes or to
synchronize more than one PIC16F87XA device
operating in parallel.
Table 14-5 shows the Reset conditions for the Status,
PCON and PC registers, while Table 14-6 shows the
Reset conditions for all the registers.
PWRT
PWRT
DD
BOR
, parameter #33).
(parameter #33, about 72 mS). If V
, temperature and process variation. See
Power-up Timer (PWRT)
Oscillator Start-up Timer (OST)
Brown-out Reset (BOR)
Time-out Sequence
, a Reset may not occur.
BOR
during T
 2003 Microchip Technology Inc.
DD
DD
PWRT
DD
DD
falls below V
rises above V
to rise to an acceptable
, the Brown-out Reset
rises above V
DD
falls below V
BOR
DD
BOR
BOR
for less
should
. The
with
BOR
BOR