PIC16CE625-04E/SS Microchip Technology, PIC16CE625-04E/SS Datasheet - Page 51

• Manufacturer Part Number: PIC16CE625-04E/SS
• Description: IC MCU OTP 2KX14 EE COMP 20SSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16CE625-04E/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• 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
• Data Converters: -
• Connectivity: -

10.2
10.2.1
The PIC16CE62X 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
10.2.2
In XT, LP or HS modes, a crystal or ceramic resonator
is connected to the OSC1 and OSC2 pins to establish
oscillation (Figure 10-1). The PIC16CE62X 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 10-2).
FIGURE 10-1: CRYSTAL OPERATION
FIGURE 10-2: EXTERNAL CLOCK INPUT
See Table 10-1 and Table 10-2 for recommended values
of C1 and C2.
1999 Microchip Technology Inc.
Clock From
ext. system
Note:
Open
C1
C2
Oscillator Configurations
CRYSTAL OSCILLATOR / CERAMIC
RESONATORS
OSCILLATOR TYPES
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
Resistor/Capacitor
see Note
A series resistor may be required for AT
strip cut crystals.
XTAL
RS
(OR CERAMIC RESONATOR)
(HS, XT OR LP OSC
CONFIGURATION)
OPERATION (HS, XT OR LP
OSC CONFIGURATION)
OSC2
OSC1
OSC1
OSC2
RF
PIC16CE62X
PIC16CE62X
To Internal Logic
SLEEP
TABLE 10-1:
TABLE 10-2:
1.
2.
3.
4.
Ranges Tested:
XT
HS
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.
Osc Type
Mode
Recommended values of C1 and C2 are identical to
the ranges tested table.
Higher capacitance increases the stability of oscillator,
but also increases the start-up time.
Since each resonator/crystal has its own characteris-
tics, the user should consult the resonator/crystal
manufacturer for appropriate values of external com-
ponents.
Rs may be required in HS mode, as well as XT mode,
to avoid overdriving crystals with low drive level spec-
ification.
HS
XT
LP
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
455 kHz
200 kHz
200 kHz
Crystal
20 MHz
Freq
32 kHz
1 MHz
4 MHz
4 MHz
8 MHz
Freq
CERAMIC RESONATORS,
PIC16CE62X
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR,
PIC16CE62X
PIC16CE62X
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
33 pF
15 pF
15 pF
15 pF
15 pF
OSC1
C1
DS40182C-page 51
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
33 pF
15 pF
15 pF
15 pF
15 pF
OSC2
C2