PIC16F636-I/P Microchip Technology, PIC16F636-I/P Datasheet - Page 31
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PIC16F636-I/P
Manufacturer Part Number
PIC16F636-I/P
Description
IC MCU FLASH 2KX14 14DIP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC12F635-ISN.pdf
(234 pages)
3.PIC16F636-ISL.pdf
(8 pages)
4.PIC16F636-ISL.pdf
(4 pages)
5.PIC16F636-IST.pdf
(196 pages)
Specifications of PIC16F636-I/P
Program Memory Type
FLASH
Program Memory Size
3.5KB (2K x 14)
Package / Case
14-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, LVD, POR, WDT
Number Of I /o
11
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
RS- 232/SPI/USB
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164039 - MODULE SKT PROMATE II 20DIP/SOICAC162057 - MPLAB ICD 2 HEADER 14DIPACICE0207 - MPLABICE 14P 300 MIL ADAPTER
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
3.0
3.1
The PIC12F635/PIC16F636/639 has a wide variety of
clock sources and selection features to allow it to be
used in a wide range of applications, while maximizing
performance and minimizing power consumption.
Figure 3-1
PIC12F635/PIC16F636/639 clock sources.
Clock sources can be configured from external oscillators,
quartz crystal resonators, ceramic resonators and
Resistor-Capacitor (RC) circuits. In addition, the system
clock source can be configured from one of two internal
oscillators, with a choice of speeds selectable via
software. Additional clock features include:
• Selectable system clock source between external
• Two-Speed Clock Start-up mode, which
• Fail-Safe Clock Monitor (FSCM) designed to
FIGURE 3-1:
© 2005 Microchip Technology Inc.
or internal via software.
minimizes latency between external oscillator
start-up and code execution.
detect a failure of the external clock source (LP,
XT, HS, EC or RC modes) and switch to the
internal oscillator.
OSC2
OSC1
Note 1:
CLOCK SOURCES
Overview
illustrates
2:
External Oscillator
Internal Oscillator
HFINTOSC = High-Frequency Calibrated Internal Oscillator.
LFINTOSC = Low-Frequency Internal Oscillator is not calibrated.
HFINTOSC
LFINTOSC
31 kHz
8 MHz
PIC12F635/PIC16F636/639 CLOCK SOURCE BLOCK DIAGRAM
a
(2)
(1)
block
Sleep
diagram
of
500 kHz
250 kHz
125 kHz
31 kHz
8 MHz
4 MHz
2 MHz
1 MHz
PIC12F635/PIC16F636/639
Preliminary
the
(OSCCON<6:4>)
IRCF<2:0>
111
110
101
100
011
010
001
000
The PIC12F635/PIC16F636/639 can be configured in
one of eight clock modes.
1.
2.
3.
4.
5.
6.
7.
8.
Clock source modes are configured by the FOSC<2:0>
bits
Section 12.0 “Special Features of the CPU”). The
internal clock can be generated by two oscillators. The
HFINTOSC is a high-frequency calibrated oscillator. The
LFINTOSC is a low-frequency uncalibrated oscillator.
LP, XT, HS, RC, RCIO, EC
EC – External clock with I/O on RA4.
LP – Low gain crystal or Ceramic Resonator
Oscillator mode.
XT – Medium gain crystal or Ceramic Resonator
Oscillator mode.
HS – High gain crystal or Ceramic Resonator
mode.
RC – External Resistor-Capacitor (RC) with
F
RCIO – External Resistor-Capacitor (RC) with I/O
on RA4.
INTOSC – Internal oscillator with F
on RA4 and I/O on RA5.
INTOSCIO – Internal oscillator with I/O on RA4
and RA5.
OSC
in
/4 output on RA4.
the
Power-up Timer (PWRT)
Watchdog Timer (WDT)
Fail-Safe Clock Monitor (FSCM)
Configuration
(Configuration Word)
(OSCCON<0>)
FOSC<2:0>
SCS
(CPU and Peripherals)
Word
DS41232B-page 29
System Clock
OSC
register
/4 output
(see