PIC12F635-I/P Microchip Technology, PIC12F635-I/P Datasheet - Page 73

• Manufacturer Part Number: PIC12F635-I/P
• Description: IC MCU FLASH 1KX14 8DIP
• Manufacturer: Microchip Technology
• Series: PIC® 12Fr

Specifications of PIC12F635-I/P

• Program Memory Type: FLASH
• Program Memory Size: 1.75KB (1K x 14)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 5
• Eeprom Size: 128 x 8
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC12F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 64 B
• Interface Type: RS- 232/SPI/USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 6
• 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, ICE2000, DV164120, DM163029, DV164101, DM163014
• Minimum Operating Temperature: - 40 C
• Data Rom Size: 128 B
• Height: 3.3 mm
• Length: 9.27 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 6.35 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM163029 - BOARD PICDEM FOR MECHATRONICSAC162057 - MPLAB ICD 2 HEADER 14DIPACICE0201 - MPLABICE 8P 300 MIL ADAPTERAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7.0
Comparators are used to interface analog circuits to a
digital circuit by comparing two analog voltages and
providing a digital indication of their relative magnitudes.
The comparators are very useful mixed signal building
blocks because they provide analog functionality
independent of the program execution. The Analog
Comparator module includes the following features:
• Dual comparators (PIC16F636/639 only)
• Multiple comparator configurations
• Comparator(s) output is available
• Programmable output polarity
• Interrupt-on-change
• Wake-up from Sleep
• Timer1 gate (count enable)
• Output synchronization to Timer1 clock input
• Programmable voltage reference
7.1
A comparator is shown in Figure 7-1 along with the
relationship between the analog input levels and the
digital output. When the analog voltage at V
than the analog voltage at V
FIGURE 7-2:
© 2007 Microchip Technology Inc.
internally/externally
COMPARATOR MODULE
Comparator Overview
Note 1: Comparator output is latched on falling edge of Timer1 clock source.
2: Q1 and Q3 are phases of the four-phase system clock (F
3: Q1 is held high during Sleep mode.
COMPARATOR OUTPUT BLOCK DIAGRAM (PIC12F635)
CINV
IN
-, the output of the
Q3*RD CMCON0
clock source
Timer1
IN
+ is less
Q1
PIC12F635/PIC16F636/639
(1)
Reset
EN
D
D
EN
D
CL
Q
Q
Q
comparator is a digital low level. When the analog
voltage at V
V
The PIC12F635 contains a single comparator as
shown in Figure 7-2.
The PIC16F636/639 devices contains two comparators
as shown in Figure 7-3 and Figure 7-4. The comparators
are not independently configurable.
FIGURE 7-1:
IN
Output
Note:
-, the output of the comparator is a digital high level.
V
V
V
V
IN
IN
IN
IN
RD CMCON0
+
-
-
+
CMSYNC
The black areas of the output of the
comparator represents the uncertainty
due to input offsets and response time.
IN
OSC
+ is greater than the analog voltage at
0
1
).
+
–
SINGLE COMPARATOR
To Timer1 Gate
To COUT pin
To Data Bus
Set CMIF bit
DS41232D-page 71
Output