PIC16F684-I/P Microchip Technology Inc., PIC16F684-I/P Datasheet - Page 24

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PIC16F684-I/P

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

Specifications of PIC16F684-I/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

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0
PIC16F684
3.4.3
The LP, XT and HS modes support the use of quartz
crystal resonators or ceramic resonators connected to
OSC1 and OSC2 (Figure 3-3). The mode selects a low,
medium or
inverter-amplifier to support various resonator types
and speed.
LP Oscillator mode selects the lowest gain setting of the
internal inverter-amplifier. LP mode current consumption
is the least of the three modes. This mode is designed to
drive only 32.768 kHz tuning-fork type crystals (watch
crystals).
XT Oscillator mode selects the intermediate gain
setting of the internal inverter-amplifier. XT mode
current consumption is the medium of the three modes.
This mode is best suited to drive resonators with a
medium drive level specification.
HS Oscillator mode selects the highest gain setting of the
internal inverter-amplifier. HS mode current consumption
is the highest of the three modes. This mode is best
suited for resonators that require a high drive setting.
Figure 3-3 and Figure 3-4 show typical circuits for
quartz crystal and ceramic resonators, respectively.
FIGURE 3-3:
DS41202D-page 22
Note 1: A series resistor (R
C1
C2
2: The value of R
quartz crystals with low drive level.
selected (typically between 2 M
LP, XT, HS MODES
Quartz
Crystal
high gain
R
S (1)
QUARTZ CRYSTAL
OPERATION (LP, XT OR
HS MODE)
F
varies with the Oscillator mode
OSC1/CLKIN
OSC2/CLKOUT
setting of the internal
R
S
F
PICmicro
(2)
) may be required for
®
MCU
to 10 M
Sleep
To Internal
Logic
.
FIGURE 3-4:
Note 1: A series resistor (R
Note 1: Quartz crystal characteristics vary according
C1
C2 Ceramic
2: The value of R
3: An additional parallel feedback resistor (R
2: Always verify oscillator performance over
3: For oscillator design assistance, reference
Resonator
ceramic resonators with low drive level.
selected (typically between 2 M to 10 M
may be required for proper ceramic resonator
operation.
• AN826, “Crystal Oscillator Basics and
• AN849, “Basic PICmicro
• AN943, “Practical PICmicro
• AN949, “Making Your Oscillator Work”
to type, package and manufacturer. The
user should consult the manufacturer data
sheets for specifications and recommended
application.
the V
expected for the application.
the following Microchip Applications Notes:
Crystal Selection for rfPIC
PICmicro
Design” (DS00849)
Analysis and Design” (DS00943)
(DS00949)
DD
R
P
R
(3)
S
and temperature range that is
(1)
®
CERAMIC RESONATOR
OPERATION
(XT OR HS MODE)
© 2006 Microchip Technology Inc.
Devices” (DS00826)
F
varies with the Oscillator mode
OSC1/CLKIN
OSC2/CLKOUT
S
R
) may be required for
F
PICmicro
(2)
®
®
Oscillator
®
and
®
Oscillator
MCU
To Internal
Logic
Sleep
.
P
)

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