PIC16C716-20E/SS Microchip Technology, PIC16C716-20E/SS Datasheet - Page 55

• Manufacturer Part Number: PIC16C716-20E/SS
• Description: IC MCU OTP 2KX14 A/D PWM 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C716-20E/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• For Use With: 309-1016 - ADAPTER 20-SSOP TO 18-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

9.2
9.2.1
The PIC16CXXX can be operated in four different
Oscillator modes. The user can program two
Configuration bits (FOSC1 and FOSC0) to select one
of these four modes:
• LP
• XT
• HS
• RC
9.2.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16CXXX oscillator design requires the use of a par-
allel cut crystal. Use of a series cut crystal may give a
frequency out of the crystal manufacturers specifica-
tions. When in XT, LP or HS modes, the device can
have an external clock source to drive the OSC1/
CLKIN pin (Figure 9-3).
FIGURE 9-2:
FIGURE 9-3:
© 2005 Microchip Technology Inc.
Note 1: See
Clock from
ext. system
to
C1
C2
2: A series resistor (RS) may be required for
3: RF varies with the crystal chosen.
Oscillator Configurations
(1)
(1)
Low-Power Crystal
Crystal/Resonator
High-Speed Crystal/Resonator
Resistor/Capacitor
establish
recommended values of C1 and C2.
AT strip cut crystals.
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
OSCILLATOR TYPES
XTAL
RS
Open
(2)
Table 9-1
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
PIC16C7XX
and
(3)
(Figure 9-2).
PIC16C7XX
Table 9-2
Sleep
internal
logic
The
for
To
TABLE 9-1:
TABLE 9-2:
Ranges Tested:
XT
HS
Note 1:
Osc Type
Mode
HS
XT
LP
2:
3:
4:
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.
Recommended values of C1 and C2 are
identical to the ranges tested (Table 9-1).
Higher capacitance increases the stability
of the oscillator, but also increases the
start-up time.
Since each resonator/crystal has its own
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate values of external compo-
nents.
Rs may be required in HS mode, as well
as XT mode to avoid overdriving crystals
with low drive level specification.
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
PIC16C712/716
Freq
200 kHz
200 kHz
Crystal
20 MHz
32 kHz
1 MHz
4 MHz
4 MHz
8 MHz
Freq
CERAMIC RESONATORS
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
68-100 pF
15-68 pF
15-68 pF
10-68 pF
10-22 pF
Cap. Range
47-68 pF
15-33 pF
15-33 pF
OSC1
33 pF
15 pF
15 pF
15 pF
15 pF
C1
DS41106B-page 53
68-100 pF
15-68 pF
15-68 pF
10-68 pF
10-22 pF
Cap. Range
47-68 pF
15-33 pF
15-33 pF
OSC2
33 pF
15 pF
15 pF
15 pF
15 pF
C2