PIC16C71-04/P Microchip Technology Inc., PIC16C71-04/P Datasheet - Page 49

• Manufacturer Part Number: PIC16C71-04/P
• Description: 18 PIN, 1.75 KB OTP, 36 RAM, 13 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C71-04/P

• A/d Inputs: 4-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 13
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 36 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit
• Voltage, Range: 3-6 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

8.2
8.2.1
The PIC16CXX can be operated in four different oscil-
lator modes. The user can program two configuration
bits (FOSC1 and FOSC0) to select one of these four
modes:
• LP
• XT
• HS
• RC
8.2.2
In XT, LP or HS modes a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
PIC16CXX 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 8-5).
FIGURE 8-4:
FIGURE 8-5:
See Table 8-1 and Table 8-1 for recommended values of
C1 and C2.
Note 1: A series resistor may be required for AT strip
1997 Microchip Technology Inc.
Clock from
ext. system
to
2: The buffer is on the OSC2 pin.
Oscillator Configurations
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
OSCILLATOR TYPES
C1
C2
cut crystals.
Low Power Crystal
Crystal/Resonator
High Speed Crystal/Resonator
Resistor/Capacitor
establish
Open
Note1
XTAL
RS
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP
OSC CONFIGURATION)
EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR LP
OSC CONFIGURATION)
OSC1
OSC2
oscillation
OSC1
OSC2
R
F
PIC16CXXX
(Figure 8-4).
(2)
SLEEP
PIC16CXXX
To internal
logic
The
TABLE 8-1:
TABLE 8-2:
Ranges Tested:
XT
HS
Resonators Used:
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz Murata Erie CSA16.00MX
Mode
Mode
XT
HS
LP
All resonators used did not have built-in capacitors.
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.
455 kHz
2.0 MHz
4.0 MHz
8.0 MHz
16.0 MHz
Panasonic EFO-A455K04B
Murata Erie CSA2.00MG
Murata Erie CSA4.00MG
Murata Erie CSA8.00MT
200 kHz
100 kHz
500 kHz
20 MHz
32 kHz
1 MHz
2 MHz
4 MHz
8 MHz
Freq
Freq
CERAMIC RESONATORS,
PIC16C71
CAPACITOR SELECTION
FOR CRYSTAL OSCILLATOR,
PIC16C71
PIC16C71X
47 - 100 pF
33 - 68 pF
15 - 47 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
47 - 100 pF
15 - 68 pF
15 - 68 pF
15 - 68 pF
10 - 47 pF
OSC1
OSC1
DS30272A-page 49
47 - 100 pF
47 - 100 pF
15 - 68 pF
15 - 68 pF
15 - 68 pF
10 - 47 pF
33 - 68 pF
15 - 47 pF
20 - 68 pF
15 - 68 pF
15 - 47 pF
15 - 33 pF
15 - 47 pF
15 - 47 pF
0.3%
0.5%
0.5%
0.5%
0.5%
OSC2
OSC2