PIC16F684-E/P Microchip Technology Inc., PIC16F684-E/P Datasheet - Page 103

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PIC16F684-E/P

Manufacturer Part Number
PIC16F684-E/P
Description
14 PIN, 3.5 KB FLASH, 128 RAM, 12 I/O
Manufacturer
Microchip Technology Inc.
Datasheet

Specifications of PIC16F684-E/P

A/d Inputs
8-Channel, 10-Bit
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
12
Memory Type
Flash
Number Of Bits
8
Package Type
14-pin PDIP
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
12.3.4
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> = 10, the BOR is automatically
disabled in Sleep to conserve power and enabled on
wake-up. In this mode, the SBOREN bit is disabled.
See
definition.
A brown-out occurs when V
greater than parameter T
“Electrical Specifications”). The brown-out condition
will reset the device. This will occur regardless of V
slew rate. A Brown-out Reset may not occur if V
below V
On any Reset (Power-on, Brown-out Reset, Watchdog
Timer, etc.), the chip will remain in Reset until V
above V
Power-up Timer will be invoked by the Reset and keep
the chip in Reset an additional 64 ms.
FIGURE 12-3:
© 2006 Microchip Technology Inc.
Note:
Register 12-1
Note 1: 64 ms delay only if PWRTE bit is programmed to ‘0’.
BOR
BOR
BROWN-OUT RESET (BOR)
The Power-up Timer is enabled by the
PWRTE bit in the Configuration Word
register.
for less than parameter T
Internal
Internal
Internal
(see Figure 12-3). If enabled, the
Reset
Reset
Reset
V
V
V
DD
DD
DD
for
BROWN-OUT SITUATIONS
the
BOR
DD
Configuration
falls below V
(see Section 15.0
BOR
.
DD
BOR
DD
Word
rises
falls
for
DD
< 64 ms
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.
12.3.5
The PIC16F684 stores the BOR calibration values in
fuses located in the Calibration Word register (2008h).
The Calibration Word register is not erased when using
the
“PIC12F6XX/16F6XX Memory Programming Specifi-
cation” (DS41204) and thus, does not require
reprogramming.
(1)
Note:
64 ms
64 ms
DD
specified
drops below V
(1)
(1)
BOR CALIBRATION
gram memory space. It belongs to the
special
(2000h-3FFFh), which can be accessed
only
“PIC12F6XX/16F6XX Memory Program-
ming Specification” (DS41204) for more
information.
Address 2008h is beyond the user pro-
BOR
, the Power-up Timer will execute a
bulk
during
BOR
configuration
erase
while the Power-up Timer is
PIC16F684
V
V
V
BOR
BOR
BOR
programming.
sequence
DS41202D-page 101
memory
in
space
See
the
DD

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