PIC16C505-04I/P Microchip Technology Inc., PIC16C505-04I/P Datasheet - Page 28

• Manufacturer Part Number: PIC16C505-04I/P
• Description: 14 PIN, 1.5 KB OTP, 72 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C505-04I/P

• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 11
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 14-pin PDIP
• Programmable Memory: 1.5K Bytes
• Ram Size: 72 Bytes
• Speed: 4 MHz
• Timers: 1- 8-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16C505
7.2
7.2.1
The PIC16C505 can be operated in four different
oscillator modes. The user can program three
configuration bits (FOSC<2:0>) to select one of these
four modes:
• LP:
• XT:
• HS:
• INTRC: Internal 4 MHz Oscillator
• EXTRC: External Resistor/Capacitor
7.2.2
In HS, XT or LP modes, a crystal or ceramic resonator
is connected to the RB5/OSC1/CLKIN and RB4/
OSC2/CLKOUT
(Figure 7-1).
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 HS, XT
or LP modes, the device can have an external clock
source drive the RB5/OSC1/CLKIN pin (Figure 7-2).
FIGURE 7-1:
FIGURE 7-2:
DS40192C-page 28
Clock from
ext. system
Note 1:
2:
3:
C2
C1
Oscillator Configurations
CRYSTAL OSCILLATOR / CERAMIC
RESONATORS
OSCILLATOR TYPES
(1)
(1)
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
See Capacitor Selection tables for
recommended values of C1 and C2.
A series resistor (RS) may be required for AT
strip cut crystals.
RF approx. value = 10 M .
Open
RS
The
XTAL
(2)
CRYSTAL OPERATION (OR
CERAMIC RESONATOR)
(HS, XT OR LP OSC
CONFIGURATION)
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR LP
OSC CONFIGURATION)
pins
OSC2
OSC1
PIC16C505
to
OSC2
OSC1
RF
establish
(3)
PIC16C505
oscillator
PIC16C505
To internal
SLEEP
oscillation
logic
design
TABLE 7-1:
TABLE 7-2:
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.
Note 1:
These values are for design guidance only. Rs may
be required to avoid overdriving crystals with low
drive level specification. Since each crystal has its
own characteristics, the user should consult the crys-
tal manufacturer for appropriate values of external
components.
Type
Type
Osc
Osc
XT
HS
XT
HS
LP
For V
recommended.
Resonator
Resonator
32 kHz
4.0 MHz
200 kHz
16 MHz
20 MHz
1 MHz
4 MHz
Freq
Freq
DD
CAPACITOR SELECTION
FOR CERAMIC RESONATORS
- PIC16C505
CAPACITOR SELECTION
FOR CRYSTAL OSCILLATOR -
PIC16C505
(1)
> 4.5V, C1 = C2
Cap. Range
Cap.Range
1999 Microchip Technology Inc.
10-47 pF
47-68 pF
15-47 pF
30 pF
15 pF
15 pF
15 pF
C1
C1
30 pF is
Cap. Range
Cap. Range
10-47 pF
47-68 pF
15-47 pF
30 pF
15 pF
15 pF
15 pF
C2
C2