PIC16C622-20/SO Microchip Technology, PIC16C622-20/SO Datasheet - Page 49

• Manufacturer Part Number: PIC16C622-20/SO
• Description: IC MCU OTP 2KX14 COMP 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C622-20/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, 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): 3 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

9.2
9.2.1
The PIC16C62X devices can be operated in four
different oscillator options. 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 and OSC2 pins to establish
oscillation (Figure 9-1). The PIC16C62X 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 pin (Figure 9-2).
FIGURE 9-1:
FIGURE 9-2:
 2003 Microchip Technology Inc.
See Table 9-1 and Table 9-2 for recommended
values of C1 and C2.
clock from
ext. system
Note:
Open
C1
C2
Oscillator Configurations
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
Resistor/Capacitor
CRYSTAL OSCILLATOR / CERAMIC
RESONATORS
OSCILLATOR TYPES
See Note
A series resistor may be required for
AT strip cut crystals.
XTAL
RS
OSC1
OSC2
CRYSTAL OPERATION
(OR CERAMIC
RESONATOR) (HS, XT OR
LP OSC
CONFIGURATION)
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR
LP OSC
CONFIGURATION)
OSC1
OSC2
RF
PIC16C62X
PIC16C62X
SLEEP
To internal logic
TABLE 9-1:
TABLE 9-2:
XT
HS
Mode
Mode
XT
HS
LP
Higher capacitance increases the stability of the oscil-
Higher capacitance increases the stability of the
Ranges Characterized:
lator but also increases the start-up time. These
values are for design guidance only. Since each
resonator has its own characteristics, the user
should consult the resonator manufacturer for
appropriate values of external components.
oscillator but also increases the start-up time.
These values are for design guidance only. Rs may
be required in HS mode as well as XT mode to
avoid overdriving crystals with low drive level
specification. Since each crystal has its own
characteristics, the user should consult the crystal
manufacturer for appropriate values of external
components.
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
200 kHz
100 kHz
10 MHz
20 MHz
32 kHz
Freq
2 MHz
4 MHz
8 MHz
Freq
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
22 - 100 pF
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
PIC16C62X
OSC1(C1)
68 - 100 pF
68 - 150 pF
OSC1(C1)
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF
DS30235J-page 47
22 - 100 pF
15 - 68 pF
15 - 68 pF
10 - 68 pF
10 - 22 pF
150 - 200 pF
68 - 100 pF
OSC2(C2)
OSC2(C2)
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF
15 - 30 pF