PIC12F635-E/MD MICROCHIP [Microchip Technology], PIC12F635-E/MD Datasheet - Page 136

• Manufacturer Part Number: PIC12F635-E/MD
• Description: 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC12F635/PIC16F636/639
12.6
The BOREN0 and BOREN1 bits in the Configuration
Word register select one of four BOR modes. Two
modes have been added to allow software or hardware
control of the BOR enable. When BOREN<1:0> = 01,
the SBOREN bit of the PCON register enables/disables
the BOR allowing it to be controlled in software. By
selecting BOREN<1:0>, the BOR is automatically
disabled in Sleep to conserve power and enabled on
wake-up. In this mode, the SBOREN bit is disabled. See
Register 12-1 for the Configuration Word definition.
If V
(T
the Brown-out situation will reset the device. This will
occur regardless of V
ensured to occur if V
parameter (T
FIGURE 12-3:
DS41232D-page 134
BOD
DD
) (see Section 15.0 “Electrical Specifications”),
falls below V
Brown-out Reset (BOR)
BOD
).
Note 1: Nominal 64 ms delay only if PWRTE bit is programmed to ‘0’.
Internal
Internal
Internal
Reset
Reset
Reset
V
V
V
DD
BOD
DD
DD
DD
DD
BROWN-OUT RESET SITUATIONS
falls below V
for greater than parameter
slew rate. A Reset is not
BOD
for less than
< 64 ms
64 ms
On any Reset (Power-on, Brown-out Reset, Watchdog
Timer, etc.), the chip will remain in Reset until V
above V
will now be invoked, if enabled and will keep the chip in
Reset an additional nominal 64 ms.
If V
running, the chip will go back into a Brown-out Reset
and the Power-up Timer will be re-initialized. Once V
rises above V
64 ms Reset.
Note:
(1)
DD
64 ms
64 ms
drops below V
BOD
(1)
(1)
The Power-up Timer is enabled by the
PWRTE bit in the Configuration Word
register.
(see Figure 12-3). The Power-up Timer
BOD
, the Power-up Timer will execute a
BOD
© 2007 Microchip Technology Inc.
while the Power-up Timer is
V
V
V
BOD
BOD
BOD
DD
rises
DD