PIC16F818T-I/SS Microchip Technology, PIC16F818T-I/SS Datasheet - Page 42
![IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16F818T-I/SS
Manufacturer Part Number
PIC16F818T-I/SS
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(176 pages)
4.PIC16F818-ISO.pdf
(6 pages)
5.PIC16F818-ISO.pdf
(8 pages)
6.PIC16F818-ISO.pdf
(8 pages)
Specifications of PIC16F818T-I/SS
Rohs Compliant
YES
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
I2C, SPI, SSP
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
1 x 16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC16F688T-ISL PDF datasheet #2
- PIC16F818-ISO PDF datasheet #3
- PIC16F818-ISO PDF datasheet #4
- PIC16F818-ISO PDF datasheet #5
- PIC16F818-ISO PDF datasheet #6
- Current page: 42 of 688
- Download datasheet (3Mb)
PICmicro MID-RANGE MCU FAMILY
2.4
2.4.1
DS31002A-page 2-12
RC Start-up
External RC Oscillator
For timing insensitive applications the “EXTRC” device option offers additional cost savings. The
RC oscillator frequency is a function of; the supply voltage, the resistor (R
(C
from unit to unit due to normal process parameter variation. Furthermore, the difference in lead
frame capacitance between package types will also affect the oscillation frequency, especially for
low C
R
PIC16CXXX. For R
completely. For very high R
humidity and leakage. Thus, we recommend keeping R
Figure 2-6: EXTRC Oscillator Mode
Although the oscillator will operate with no external capacitor (C
using values above 20 pF for noise and stability reasons. With no or small external capacitance,
the oscillation frequency can vary dramatically due to changes in external capacitances, such as
PCB trace capacitance and package lead frame capacitance.
See characterization data for RC frequency variation from part to part due to normal process
variation. The variation is larger for larger resistance (since leakage current variation will affect
RC frequency more for large R) and for smaller capacitance (since variation of input capacitance
will affect RC frequency more).
See characterization data for variation of oscillator frequency due to V
values as well as frequency variation due to operating temperature for given R
V
The oscillator frequency, divided by 4, is available on the OSC2/CLKOUT pin, and can be used
for test purposes or to synchronize other logic (see
the
As the device voltage increases, the RC will start its oscillations immediately after the pin voltage
levels meet the input threshold specifications
Specifications”
tors. These include:
• Resistor value used
• Capacitor value used
• Device V
• System temperature
DD
EXT
EXT
Note 1: This output may also be able to be configured as a general purpose I/O pin.
“Architecture”
values.
EXT
) values, and the operating temperature. In addition to this, the oscillator frequency will vary
and C
values. The user also needs to take into account variation due to tolerance of external
DD
EXT
rise time
components used.
section). The time required for the RC to start oscillating depends on many fac-
EXT
section, for waveform).
C
R
V
values below 2.2 k , oscillator operation may become unstable, or stop
EXT
SS
EXT
V
EXT
DD
values (e.g. 1 M ), the oscillator becomes sensitive to noise,
Fosc/4
Figure 2-6
(1)
OSC1
OSC2/CLKOUT
shows how the RC combination is connected to a
(parameters D032
Figure 4-3: "Clock/Instruction Cycle"
EXT
Fosc
between 3 k and 100 k .
PIC16CXXX
Internal
clock
EXT
and
1997 Microchip Technology Inc.
= 0 pF), we recommend
D042
DD
for given R
EXT
in the
) and capacitor
EXT
, C
“Electrical
EXT
EXT
/C
, and
EXT
in
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