PIC16F84A-20/P Microchip Technology Inc., PIC16F84A-20/P Datasheet - Page 25

• Manufacturer Part Number: PIC16F84A-20/P
• Description: 18 PIN, 1.75 KB FLASH, 68 RAM, 13 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F84A-20/P

• Cpu Speed: 5 MIPS
• Eeprom Memory: 64 Bytes
• Input Output: 13
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 68 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

TABLE 6-2:
Mode
Note:
2001 Microchip Technology Inc.
XT
HS
LP
Higher capacitance increases the stability
of the 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 over-
driving crystals with low drive level specifi-
cation. Since each crystal has its own
characteristics, the user should consult the
crystal
values of external components.
For V
mended.
200 kHz
100 kHz
20 MHz
32 kHz
2 MHz
4 MHz
4 MHz
Freq
DD
CAPACITOR SELECTION
FOR CRYSTAL OSCILLATOR
> 4.5V, C1 = C2
manufacturer
100 - 150 pF
68 - 100 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
OSC1/C1
for
30 pF is recom-
100 - 150 pF
68 - 100 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
15 - 33 pF
OSC2/C2
appropriate
6.2.3
For timing insensitive applications, the RC device
option offers additional cost savings. The RC oscillator
frequency is a function of the supply voltage, the
resistor (R
the operating temperature. In addition to this, the oscil-
lator frequency will vary from unit to unit due to normal
process
difference in lead frame capacitance between package
types also affects the oscillation frequency, especially
for low C
account variation, due to tolerance of the external
R and C components. Figure 6-3 shows how an R/C
combination is connected to the PIC16F84A.
FIGURE 6-3:
C
V
Recommended values: 5 k
R
EXT
SS
EXT
V
DD
EXT
parameter
EXT
RC OSCILLATOR
) values, capacitor (C
values. The user needs to take into
F
OSC
/4
RC OSCILLATOR MODE
variation.
OSC1
OSC2/CLKOUT
C
PIC16F84A
EXT
> 20pF
R
EXT
Furthermore,
DS35007B-page 23
EXT
100 k
) values, and
PIC16FXX
Internal
Clock
the