PIC16F716-I/SS Microchip Technology Inc., PIC16F716-I/SS Datasheet - Page 65

• 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

9.2
9.2.1
The PIC16F716 can be operated in four different
oscillator modes. The user can program two Configura-
tion bits (FOSC1 and FOSC0) to select one of these
four modes:
• LP – Low-power Crystal
• XT – Crystal/Resonator
• HS – High-speed Crystal/Resonator
• RC – Resistor/Capacitor
9.2.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16F716 oscillator design requires the use of a
parallel cut crystal. Use of a series cut crystal may give
a frequency out of the crystal manufacturers
specifications. When in XT, LP or HS modes, the
device can have an external clock source to drive the
OSC1/CLKIN pin (Figure 9-2).
FIGURE 9-1:
FIGURE 9-2:
© 2007 Microchip Technology Inc.
Note 1:
Clock from
ext. system
to
C1
C2
2:
3:
Oscillator Configurations
(1)
(1)
establish
OSCILLATOR TYPES
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
See Table 9-1 and Table 9-2 for
recommended values of C1 and C2.
A series resistor (RS) may be required.
RF varies with the crystal chosen.
XTAL
RS
Open
(2)
OSC1
OSC2
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP
OSC CONFIGURATION)
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR
LP OSC
CONFIGURATION)
oscillation
OSC1
OSC2
RF
PIC16F716
(3)
(Figure 9-1).
PIC16F716
Sleep
internal
logic
The
To
TABLE 9-1:
TABLE 9-2:
XT
HS
Note 1:
LP
XT
HS
Note 1:
Osc Type
Mode
Note 1: Higher capacitance increases the stability
2: Since each resonator/crystal has its own
3: RS may be required to avoid overdriving
4: When using an external clock for the
These values are for design guidance
only. See notes at bottom of page.
These values are for design guidance only.
See notes at bottom of page.
of the oscillator, but also increases the
start-up time.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate
components.
crystals with low drive level specification.
OSC1 input, loading of the OSC2 pin
must be kept to a minimum by leaving the
OSC2 pin unconnected.
16.0 MHz
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
200 kHz
200 kHz
Freq
Crystal
20 MHz
32 kHz
1 MHz
4 MHz
4 MHz
8 MHz
Freq
CERAMIC RESONATORS
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
Ranges Tested:
PIC16F716
Cap. Range
OSC1 (C1)
68-100 pF
values
15-68 pF
10-68 pF
15-68 pF
10-22 pF
15-33 pF
47-68 pF
15-33 pF
15-33 pF
15-33 pF
15-33 pF
15-33 pF
5-10 pF
C1
DS41206B-page 63
of
Cap. Range
OSC2 (C2)
68-100 pF
15-68 pF
10-68 pF
15-68 pF
10-22 pF
15-33 pF
47-68 pF
15-33 pF
15-33 pF
15-33 pF
15-33 pF
15-33 pF
5-10 pF
external
C2