PIC16F506-I/SL Microchip Technology, PIC16F506-I/SL Datasheet - Page 61

• Manufacturer Part Number: PIC16F506-I/SL
• Description: IC PIC MCU FLASH 1KX14 14SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F506-I/SL

• Program Memory Type: FLASH
• Program Memory Size: 1.5KB (1K x 12)
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Ram Size: 67 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 67 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• 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
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 3-ch x 8-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

TABLE 10-2:
10.2.3
Either a prepackaged oscillator or a simple oscillator
circuit with TTL gates can be used as an external
crystal oscillator circuit. Prepackaged oscillators
provide a wide operating range and better stability. A
well-designed crystal oscillator will provide good perfor-
mance with TTL gates. Two types of crystal oscillator
circuits can be used: one with parallel resonance or one
with series resonance.
Figure 10-3 shows implementation of a parallel reso-
nant oscillator circuit. The circuit is designed to use the
fundamental frequency of the crystal. The 74AS04
inverter performs the 180-degree phase shift that a
parallel oscillator requires. The 4.7 kΩ resistor provides
the negative feedback for stability. The 10 kΩ potenti-
ometers bias the 74AS04 in the linear region. This
circuit could be used for external oscillator designs.
© 2007 Microchip Technology Inc.
Note 1:
HS
Osc.
Type
XT
LP
(3)
2:
3:
Resonator
For V
recommended.
These values are for design guidance
only. Rs may be required to avoid over-
driving crystals beyond the drive level
specification. Since each crystal has its
own characteristics, the user should con-
sult the crystal manufacturer for appropri-
ate values of external components.
PIC16F506 only.
EXTERNAL CRYSTAL OSCILLATOR
CIRCUIT
32 kHz
200 kHz
20 MHz
1 MHz
4 MHz
Freq.
DD
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR –
PIC12F510/16F506
(1)
> 4.5V, C1 = C2 ≈ 30 pF is
Cap.Range
47-68 pF
15-47 pF
15 pF
15 pF
15 pF
C1
(2)
Cap. Range
47-68 pF
15-47 pF
15 pF
15 pF
15 pF
C2
FIGURE 10-3:
Figure 10-4 shows a series resonant oscillator circuit.
This circuit is also designed to use the fundamental
frequency of the crystal. The inverter performs a 180-
degree phase shift in a series resonant oscillator
circuit. The 330 Ω resistors provide the negative
feedback to bias the inverters in their linear region.
FIGURE 10-4:
10.2.4
For timing insensitive applications, the EXTRC device
option offers additional cost savings. The EXTRC oscil-
lator frequency is a function of the supply voltage, the
resistor (R
operating temperature. In addition to this, the oscillator
frequency will vary from unit-to-unit due to normal pro-
cess parameter variation. Furthermore, the difference
in lead frame capacitance between package types will
also affect the oscillation frequency, especially for low
C
variation due to tolerance of external R and C
components used.
Figure 10-5 shows how the R/C combination is
connected to the PIC12F510/16F506 devices. For
R
become unstable or stop completely. For very high
R
sensitive to noise, humidity and leakage. Thus, we
recommend keeping R
100 kΩ.
EXT
EXT
EXT
74AS04
330
values below 5.0 kΩ, the oscillator operation may
values. The user also needs to take into account
PIC12F510/16F506
values (e.g., 1 MΩ), the oscillator becomes
10k
EXT
+5V
EXTERNAL RC OSCILLATOR
20 pF
0.1 mF
10k
XTAL
) and capacitor (C
74AS04
XTAL
4.7k
74AS04
330
20 pF
EXTERNAL PARALLEL
RESONANT CRYSTAL
OSCILLATOR CIRCUIT
EXTERNAL SERIES
RESONANT CRYSTAL
OSCILLATOR CIRCUIT
EXT
10k
74AS04
between 5.0 kΩ and
74AS04
EXT
To Other
Devices
DS41268D-page 59
) values, and the
To Other
Devices
CLKIN
PIC12F510
PIC16F506
PIC12F510
PIC16F506
CLKIN