PIC16F73-I/SO Microchip Technology Inc., PIC16F73-I/SO Datasheet - Page 94

• Manufacturer Part Number: PIC16F73-I/SO
• Description: 28 PIN, 7 KB FLASH, 192 RAM, 22 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F73-I/SO

• A/d Inputs: 5-Channel, 8-Bit
• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 22
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SOIC
• Programmable Memory: 7K Bytes
• Ram Size: 192 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F7X
TABLE 12-2:
DS30325B-page 92
Osc Type
Capacitor values are for design guidance only.
These capacitors were tested with the crystals listed
below for basic start-up and operation. These values
were not optimized.
Different capacitor values may be required to produce
acceptable oscillator operation. The user should test
the performance of the oscillator over the expected
V
See the notes following this table for additional
information.
200 kHz
20 MHz
DD
32 kHz
1 MHz
4 MHz
8 MHz
Note 1: Higher capacitance increases the stability
XT
HS
LP
and temperature range for the application.
2: Since each resonator/crystal has its own
3: Rs may be required in HS mode, as well
4: Always verify oscillator performance over
of oscillator, but also increases the start-
up time.
characteristics, the user should consult
the resonator/crystal manufacturer for
appropriate values of external compo-
nents.
as XT mode, to avoid overdriving crystals
with low drive level specification.
the V
expected for the application.
200 kHz
200 kHz
Crystal
20 MHz
32 kHz
1 MHz
4 MHz
4 MHz
8 MHz
Freq
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
(FOR DESIGN GUIDANCE
ONLY)
DD
EPSON CA-301 20.000M-C
Crystals Used:
EPSON CA-301 8.000M-C
Epson C-001R32.768K-A
STD XTL 200.000KHz
and temperature range that is
ECS ECS-10-13-1
ECS ECS-40-20-1
Typical Capacitor Values
33 pF
15 pF
56 pF
15 pF
15 pF
15 pF
15 pF
15 pF
C1
Tested:
33 pF
15 pF
15 pF
15 pF
15 pF
15 pF
56 pF
15 pF
C2
12.2.3
For timing insensitive applications, the “RC” device
option offers additional cost savings. The RC oscillator
frequency is a function of the supply voltage, the resis-
tor (R
ing temperature. In addition to this, the oscillator
frequency will vary from unit to unit due to normal pro-
cess parameter variation. Furthermore, the difference
in lead frame capacitance between package types will
also affect the oscillation frequency, especially for low
C
variation due to tolerance of external R and C compo-
nents used. Figure 12-3 shows how the R/C combina-
tion is connected to the PIC16F7X.
FIGURE 12-3:
Recommended values:
EXT
C
V
R
EXT
SS
EXT
EXT
values. The user also needs to take into account
V
DD
) and capacitor (C
RC OSCILLATOR
F
OSC
/4
RC OSCILLATOR MODE
OSC1
OSC2/CLKOUT
 2002 Microchip Technology Inc.
EXT
3 k Ω ≤ R
C
EXT
) values, and the operat-
> 20pF
EXT
≤ 100 k Ω
PIC16F7X
Internal
Clock