PIC16F690-E/ML Microchip Technology, PIC16F690-E/ML Datasheet - Page 95

• Manufacturer Part Number: PIC16F690-E/ML
• Description: IC, 8BIT MCU, PIC16F, 20MHZ, QFN-20
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F690-E/ML

• Controller Family/series: PIC16F
• No. Of I/o's: 18
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 256Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Core Size: 8 Bit
• Program Memory Size: 4096 Words
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20QFN-1 - SOCKET TRANSITION 20DIP-20QFNAC164324 - MODULE SKT FOR MPLAB 8DFN/16QFNPIC16F690DM-PCTLHS - BOARD DEMO PICTAIL HUMIDITY SNSRAC162061 - HEADER INTRFC MPLAB ICD2 20PIN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

8.0
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 program execution. The Analog
Comparator module includes the following features:
• Independent comparator control
• Programmable input selection
• Comparator output is available internally/externally
• Programmable output polarity
• Interrupt-on-change
• Wake-up from Sleep
• PWM shutdown
• Timer1 gate (count enable)
• Output synchronization to Timer1 clock input
• SR Latch
• Programmable and fixed voltage reference
8.1
A single comparator is shown in Figure 8-1 along with
the relationship between the analog input levels and
the digital output. When the analog voltage at V
less than the analog voltage at V
comparator is a digital low level. When the analog
voltage at V
V
© 2008 Microchip Technology Inc.
IN
Note:
-, the output of the comparator is a digital high level.
COMPARATOR MODULE
Comparator Overview
Only Comparator C2 can be linked to
Timer1.
IN
+ is greater than the analog voltage at
IN
-, the output of the
PIC16F631/677/685/687/689/690
IN
+ is
FIGURE 8-1:
Output
Note:
V
V
V
V
IN
IN
IN
IN
+
-
-
+
The black areas of the output of the
comparator represents the uncertainty
due to input offsets and response time.
+
–
SINGLE COMPARATOR
DS41262E-page 93
Output