PIC16F716-I/SS Microchip Technology Inc., PIC16F716-I/SS Datasheet - Page 67

• Manufacturer Part Number: PIC16F716-I/SS
• Description: MCU, 8-Bit, 2KW Flash, 128 RAM, 13 I/O, SSOP-20
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F716-I/SS

• A/d Inputs: 4-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 13
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 20-pin SSOP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

9.5
The Power-up Timer provides a fixed 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
The power-up timer enable Configuration bit, PWRTE,
is provided to enable/disable the PWRT.
The power-up time delay will vary from chip-to-chip due
to V
parameters for details.
9.6
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. See
AC parameters for details.
The OST time-out is invoked only for XT, LP and HS
modes and only on Power-on Reset or wake-up from
Sleep.
© 2007 Microchip Technology Inc.
DD
, temperature and process variation. See AC
Power-up Timer (PWRT)
Oscillator Start-up Timer (OST)
DD
to rise to an acceptable level.
9.7
The PIC16F716 has on-chip Brown-out Reset circuitry.
A Configuration bit, BOREN, can disable (if clear/pro-
grammed) or enable (if set) the Brown-out Reset
circuitry.
The BORV Configuration bit selects the programmable
Brown-out Reset threshold voltage (V
BORV is 1, V
2.5V
A Brown-out Reset occurs when V
for a time greater than parameter T
A Brown-out Reset is not guaranteed to occur if V
below V
On any Reset (Power-on, Brown-out, Watchdog, etc.)
the chip will remain in Reset until V
V
keep the chip in Reset an additional 72 ms only if the
Power-up Timer enable bit in the Configuration register
is set to 0 (PWRTE = 0).
If the Power-up Timer is enabled and V
V
go back into a Brown-out Reset and the Power-up
Timer will be re-initialized. Once V
the Power-up Timer will execute a 72 ms Reset. See
Figure 9-6.
For operations where the desired brown-out voltage is
other than 4.0V or 2.5V, an external brown-out circuit
must be used. Figure 9-8, Figure 9-9 and Figure 9-10
show examples of external Brown-out Protection
circuits.
BOR
BOR
. The Power-up Timer will be invoked and will
while the Power-up Timer is running, the chip will
BOR
Programmable Brown-Out Reset
(PBOR)
for less than parameter T
BOR IS
4.0V. When BORV is 0, V
PIC16F716
DD
BOR
DD
rises above V
DS41206B-page 65
BOR
falls below V
(see Table 12-4).
DD
DD
.
BOR
rises above
drops below
). When
DD
BOR
BOR
BOR
falls
is
,